Minute-long videos generated by RECAP-Forcing, applied training-free to a 1.3B causal autoregressive checkpoint. All videos on this page are 60 seconds, generated in a single pass with no post-processing.
Abstract
Long autoregressive video generation faces a fundamental memory challenge: with a
finite attention window, a model must decide which information from an ever-expanding history to retain.
Existing methods organize memory temporally, preserving recent frames while compressing or
discarding older ones. We instead propose RECAP-Forcing, organizing memory by appearance novelty.
A long video is not merely a sequence of frames, but an evolving cast of subjects, objects, and scenes
whose identities must remain consistent over time. We organize memory by retaining the KV cache
associated with newly appearing content — such as entering subjects, disoccluded regions, and newly
introduced scenes — at the moment it first becomes visible, prioritizing novelty over recency.
Memory should scale with the amount of newly introduced content, rather than with video length.
This appearance-indexed memory makes long-range consistency an explicit property of the memory structure.
Our framework unifies two mechanisms under this single principle. At the beginning of a video, when all
visible content is novel, an attention sink preserves the initial scene. As the video evolves, an
optical-flow-based novelty bank extends the same principle by selectively retaining newly revealed
content. As a training-free inference method with no additional learnable parameters, RECAP-Forcing
consistently improves visual quality and semantic fidelity across multiple strong baselines and
outperforms existing memory methods.
01Memory Should Grow with New Content, Not with Time
A causal video model cannot attend to everything it has generated. What should a long
video remember, and how should that memory be organized?
Existing methods index memory by time: sliding windows and recency caches keep the near past sharp and
compress or discard the distant past. As earlier content is progressively discarded or compressed, the
model loses detailed access to the original visual evidence; small deviations accumulate, and the
generated content gradually drifts away from its earlier appearance — drift. Permanently
retaining references mitigates that, but excessive reliance on a fixed anchor pulls later generations
toward the same appearance and suppresses motion — freeze. Recency-based memory is caught
between forgetting the past and over-anchoring to it.
We organize memory around appearance novelty instead. Time-indexed memory asks when content was
seen; appearance-indexed memory asks what was seen that is worth remembering. A long video is a
growing cast of subjects, objects, and backgrounds whose identities should remain consistent over time.
At each novel appearance event — content entering the frame, a newly revealed region, or a
new viewpoint of a subject already present — we store its KV cache and retain it by novelty rather
than by recency: records compete on how novel they were at admission, never on how recently they were
seen. Memory scales with the amount of newly introduced content, not with video length.
Content introduced at second three remains directly accessible at minute five.
The same rollout, indexed two ways: the man is recorded at his first appearance
(t1), and each later frame depicts something new — a passing car
(t2), a pedestrian (t3), another passer-by (t4).
Frame-indexed memory (bottom left) re-stores old and new content alike at every step, then compresses or evicts
it as time passes, so memory pressure grows with video length; appearance-indexed memory (bottom right)
stores content when it newly appears, at canonical temporal position 0 — memory scales with the
amount of newly appearing content, not with its duration.
This principle unifies two mechanisms that may initially appear unrelated. Prior work treats the
attention sink (the first few latent frames) as a mechanism for maintaining content consistency,
but its default influence is often insufficient to prevent subject drift, tending instead to preserve
coarse attributes such as color tone and overall style. A reinforced sink turns the initial frames into
the video's first appearance memory. An optical-flow-based novelty bank then extends the same
principle to content introduced later, storing the KV cache of novel appearance events — entrances,
disocclusions, newly revealed regions. The memory unit is a patch at the moment it first appears, not an
explicitly identified entity. Together they instantiate one rule at different stages of generation:
record what appears and retain it.
02How RECAP-Forcing Works
A training-free, parameter-free inference plug-in for causal autoregressive video
diffusion (Wan2.1-T2V-1.3B distilled with Self-Forcing). Every query attends over
[ Sink | Memory Bank | Prior | Current ].
Preliminaries
We build on causal, block-wise video generators such as Self-Forcing, which
distill a bidirectional video diffusion transformer into a few-step causal generator. A video is produced
as a stream of 3-frame blocks; each latent frame is a 30×52 grid of 1,560 tokens, and a block is
denoised conditioned only on a bounded, sliding KV cache covering 6 latent frames — one persistent
sink frame, two prior frames, and the current block. The bound keeps per-block compute constant and
enables arbitrary-length generation, but it also forgets by construction: once a token scrolls past the
window it is gone, and the opening frame is its sole survivor. As more of the early visual context is
discarded, the model retains progressively less information about the original appearance; small
inconsistencies accumulate over time, gradually causing the generated content to drift from its earlier
identity.
What Counts as New?
A long video does not need its timeline; it needs its cast.
An entity's appearance is established by a sparse set of novel appearance events — its entry and
the later sightings of newly revealed parts — and nothing about the intervening forty seconds is
required to render it faithfully to keep consistency. This raises a natural question: what counts as
new? The answer has two exhaustive cases: at
t = 0 nothing has been seen, so the opening frame is new in its entirety; afterwards,
content is new only relative to what has already appeared — an object entering the frame, a
region disoccluded by motion, a style introduced by a change of scene.
The First Frame: A Reinforced Sink
The base model already keeps frame 0 as an attention sink, but under the default attention
distribution later queries assign insufficient weight to it: the sink mainly anchors global appearance
characteristics — color tone, background, overall style — and helps prevent quality
degradation, while the identity of subjects introduced in the opening scene can still drift. We
therefore strengthen the sink attention, promoting it from a stability anchor to a persistent
first-impression memory that is more strongly attended to by queries, by adding a fixed positive
bias to the pre-softmax logits of the sink keys:
Adding ln λ multiplies each sink key's unnormalized attention weight by λ,
uniformly raising the sink's prior importance while preserving content-based selection through
query–key similarity. Because the bias is applied before the softmax, the distribution stays
normalized — sink keys still compete with all other keys — and it is directly compatible
with fused attention kernels. Its magnitude is a measurement rather than a choice: we set
λ = 5, with its effect analyzed in the λ sweep in Results.
Every Frame After: An Appearance Novelty Bank
The reinforced sink covers the opening scene, but a long video continually introduces new content: a
second subject enters the frame, a camera pan reveals a storefront, or an occluded region becomes
visible. After t = 0, “new” therefore means content that has not been
observed before, making novelty detection a property of the video stream rather than of the model's
current query. Optical flow provides a direct cue, and admission is query-agnostic: patches are retained
by visual appearance novelty rather than query–key affinity, without entity grouping or
re-identification. The bank capacity K is a configurable memory budget rather than an
architectural constant: one frame's worth of tokens (K = 1,560) works well for the
one-minute videos in our experiments, and longer videos can naturally allocate additional slots. For
each newly decoded frame, RAFT forward–backward flow runs against its predecessor: a pixel
u is newly appeared when its backtrace finds no reliable antecedent — the cycle residual
ecyc exceeds 2 px, the photometric residual epho exceeds 0.2, or
the backtrace leaves the frame. Such pixels score
ν(u) = ecyc(u) +
α epho(u)(α = 0.5; all other pixels
score 0)
and a patch takes the maximum novelty over its pixels, normalized by its block's typical firing
strength and frozen from then on:
s(p) = maxu ∈ p
ν(u), ŝ(p) = s(p) / max(ρb,
1)(ρb = 90th percentile of positive scores in block
b)
This block-wise normalization prevents brief bursts of large motion from dominating the fixed budget,
so admissions depend on relative novelty rather than absolute motion magnitude. The map of
already-claimed novelty is propagated with the flow, so continuously traceable content fires only once,
when it first appears; if a region returns after its flow correspondence has been broken, it can
register as a new appearance event and receive a new anchor.
Each newly decoded frame is compared with its predecessor using RAFT to obtain a novelty map, from
which newly appearing patches are selected (figure below, panel a). For each selected patch, we copy the
corresponding key/value vectors from every attention layer of the KV cache and store them with
their frozen novelty scores. At retrieval, bank keys use temporal rotary phase 0 while retaining their
original spatial phase, avoiding unseen long-range temporal RoPE offsets and treating the bank as a
time-neutral appearance memory. The bank is updated with a simple top-K rule: among all
candidates observed so far, only the K highest-scoring patches are retained. Memory retention is
therefore time-neutral and parameter-free: a patch remains in the bank according to its appearance
novelty rather than how recently it was observed, without a learned controller or an explicit recency
term.
(a) Each frame pair contributes its newly appearing patches as candidates, and their
per-layer keys and values are copied exactly from the KV cache into the bank, which keeps the top-K
by frozen novelty score. (b) Green cells mark stored patches: entering subjects and newly revealed
parts of subjects already present — never content the model has already seen.
Hyperparameter
Value
Sink size
1 latent frame
Attention window
6 latent frames
Block size
3 latent frames
Bank capacity K
1,560 tokens
Sink reinforcement λ
5
Flow cycle-error threshold
2 px
Photometric-error threshold
0.2
Photometric weight α
0.5
Score normalization
per-block 90th pct.
One setting for every backbone, length, and prompt set; per-block cost is constant — a sparse
novel-token history with incremental refill, bit-identical to the naive path.
03Results
Protocol: VBench-Long on a frozen set of 128 prompts × 5 inference seeds per
configuration (640 videos each), 60-second (240-frame) videos, fixed checkpoints.
27.5 → 58.1Dynamic Degree on Self-Forcing — more than doubles motion
+10.0Dynamic Degree on Infinite-Forcing (61.3 → 71.3), consistency unchanged
79.5best Total among training-free KV-cache methods (76.2–78.9); Dynamic Degree 58.1 vs 23.0–41.2
~1.6×constant inference overhead — does not grow with video length
Main results on VBench-Long across all 16 dimensions (128 prompts, 5 seeds, 60-second videos; all values are percentages, higher is better). RECAP-Forcing — an optical-flow memory bank plus a reinforced sink — is applied as the same training-free inference hook to every base model (its "+ Ours" row); for Self-Forcing we additionally report a plain, unreinforced sink (λ = 1). Helios is 14B, all other models are 1.3B.
Method
S.C.
B.C.
T.F.
M.S.
D.D.
A.Q.
I.Q.
O.C.
M.O.
H.A.
C.
S.R.
S.
A.S.
T.S.
Ov.C.
Q.
Sem.
Total
Self-Forcing
98.0
96.8
98.3
98.9
27.5
53.8
69.2
79.5
32.1
77.0
72.8
62.6
12.1
20.6
20.9
19.6
80.4
58.0
75.9
+ Sink (λ = 1)
98.2
97.0
98.3
98.9
30.4
53.3
67.9
89.2
41.1
75.1
78.2
73.6
14.6
20.4
20.3
21.2
80.4
62.3
76.8
+ Ours
97.7
96.3
97.4
98.5
58.1
58.4
70.9
91.8
47.3
77.1
94.6
68.4
17.7
18.7
22.8
22.1
82.9
65.5
79.5
Infinite-Forcing
97.4
95.9
97.1
98.4
61.3
55.8
68.8
93.6
49.9
74.1
81.9
64.0
12.3
18.6
22.9
21.9
82.2
62.9
78.3
+ Ours
97.4
96.0
97.2
98.4
71.3
57.5
68.8
97.1
48.9
75.7
96.1
63.4
15.1
18.5
23.0
22.2
83.3
65.4
79.7
LongLive
98.7
97.0
98.5
99.2
20.3
57.1
71.6
98.2
52.2
75.9
80.4
80.5
14.8
18.1
22.7
22.6
81.2
65.9
78.1
+ Ours
98.5
97.0
98.5
99.1
26.6
57.3
71.0
98.4
50.7
76.7
82.7
80.4
19.5
17.9
23.0
22.8
81.5
66.8
78.5
Helios
95.8
97.4
98.6
99.1
36.2
45.2
49.0
36.1
8.9
66.7
53.6
49.0
4.6
21.2
20.3
21.3
76.6
45.4
70.3
+ Ours
96.4
97.3
98.1
98.8
47.8
53.6
60.0
83.7
28.5
80.0
72.2
63.4
18.6
19.3
22.2
23.7
80.2
60.5
76.3
On the Self-Forcing baseline, a plain unreinforced sink already helps (Total 75.9 → 76.8) but
recovers little motion (Dynamic Degree 27.5 → 30.4); RECAP-Forcing more than doubles Dynamic Degree
to 58.1 while improving aesthetic and imaging quality. On Infinite-Forcing, whose sink already raises
Dynamic Degree to 61.3, it adds another +10.0 (71.3) with a clear gain in overall score from 78.3 to
79.7. On LongLive and the 14B Helios it likewise improves the Total — long-video dynamics improve
on every backbone without sacrificing consistency or visual quality.
Against other training-free methods on the same base model, Deep Forcing, MemRoPE, and Rolling Sink
improve selected metrics but recover substantially less motion, with Dynamic Degree ranging from 23.0 to
41.2 versus 58.1 for RECAP-Forcing — which also achieves the best overall score (79.5) while
remaining competitive in temporal consistency.
Comparison of RECAP-Forcing with other training-free methods, each applied on top of the Self-Forcing base model.
Method
S.C.
B.C.
T.F.
M.S.
D.D.
A.Q.
I.Q.
O.C.
M.O.
H.A.
C.
S.R.
S.
A.S.
T.S.
Ov.C.
Q.
Sem.
Total
Self-Forcing
98.0
96.8
98.3
98.9
27.5
53.8
69.2
79.5
32.1
77.0
72.8
62.6
12.1
20.6
20.9
19.6
80.4
58.0
75.9
+ Deep Forcing
98.4
93.7
98.2
94.8
32.0
55.9
71.8
98.3
48.5
76.6
82.9
73.1
21.8
18.3
23.0
22.3
78.7
66.1
76.2
+ MemRoPE
98.4
96.7
98.0
99.0
41.2
56.6
73.1
94.2
44.1
76.6
84.8
68.4
15.9
19.1
21.8
21.1
82.4
63.6
78.7
+ Rolling Sink
98.9
97.3
98.7
99.2
23.0
58.3
72.6
97.9
48.2
80.7
90.3
76.5
17.6
18.2
23.2
22.5
81.8
67.1
78.9
+ Ours
97.7
96.3
97.4
98.5
58.1
58.4
70.9
91.8
47.3
77.1
94.6
68.4
17.7
18.7
22.8
22.1
82.9
65.5
79.5
The two components split the work — a clear temporal division of labor. (We ablate on
Infinite-Forcing because vanilla Self-Forcing has no sink frame: attaching RECAP-Forcing to it
instantiates the sink, which would conflate creating the sink with reinforcing it.) Alone, the
memory bank retains and incorporates information that emerges over time, lifting Dynamic Degree from
61.3 to 78.2 at a small cost in consistency; alone, the reinforced sink anchors information established
early, improving consistency and semantics but suppressing motion (61.3 → 41.6). Together, the sink
provides a stable foundation for earlier content while the bank lets later, more dynamic content develop
without drifting from it — keeping the dynamics gain (71.3) and delivering the best overall score,
Total 79.7.
Ablation of the reinforced sink and memory bank (VBench-Long, on Infinite-Forcing). Check marks show which component is enabled in each row; the last row, with both enabled, is the full model.
Reinf. Sink
Memory Bank
S.C.
B.C.
M.S.
D.D.
A.Q.
I.Q.
Q.
Sem.
Total
✗
✗
97.4
95.9
98.4
61.3
55.8
68.8
82.2
62.9
78.3
✓
✗
98.2
96.7
98.8
41.6
57.8
68.9
81.9
65.2
78.6
✗
✓
96.8
95.5
98.1
78.2
55.2
68.5
82.8
63.0
78.8
✓
✓
97.4
96.0
98.4
71.3
57.5
68.8
83.3
65.4
79.7
λ sweep. Sink attention grows smoothly with λ (~24% at λ = 5);
Subject Consistency is already saturated while Dynamic Degree erodes past λ ≈ 8
— hence λ = 5.
Ablation of RECAP-Forcing's memory bank capacity and sink-reinforcement strength λ, sweeping each around its default (bank capacity of 1 frame, λ = 5).
Bank Capacity (frame)
Sink-Reinforcement Strength (λ)
Metric
1/4
1/2
1
2
4
8
1
3
5
8
10
12
Q.
83.0
83.2
83.1
83.4
83.3
82.9
82.8
83.0
83.1
82.7
82.5
82.2
Sem.
66.0
65.8
65.7
65.4
65.9
65.1
63.0
64.5
65.7
65.2
64.4
64.1
Total
79.6
79.7
79.7
79.8
79.8
79.3
78.8
79.3
79.7
79.2
78.9
78.6
Both knobs are stable around their defaults. Growing the bank from 1 to 2 or 4 frames buys only
marginal Total gains while 8 frames drops it to 79.3, so we keep 1 frame; raising λ from 1 to 5
improves Total from 78.8 to 79.7, while 8, 10, and 12 degrade it to 79.2, 78.9, and 78.6 —
moderate sink reinforcement suffices to leverage the opening scene, and excess over-constrains
dynamics.
Human study. Beyond automatic metrics, we conducted a human study: 9 participants each
completed 24 blind pairwise comparisons (216 judgments in total), evaluating RECAP-Forcing against the
baseline and three competitors along Consistency, Motion, and Overall quality. In
each trial two anonymized videos are shown side by side; judgments marked hard to say are treated
as ties and contribute half a win, so the win rate is (W + 0.5T) / N. RECAP-Forcing
is consistently preferred over all competing methods — the improvements are clearly perceptible to
humans.
Human study results. Win rates of RECAP-Forcing in blind pairwise comparisons against each competitor. "T" denotes the number of hard-to-say judgments, treated as ties with 0.5 credit.
Competitor
Consistency
Motion
Overall
n
Self-Forcing
85.2% (6T)
76.9% (7T)
84.3% (3T)
54
Deep Forcing
73.1% (15T)
76.9% (5T)
77.8% (4T)
54
MemRoPE
84.3% (7T)
67.6% (5T)
75.0% (3T)
54
Rolling Sink
82.4% (7T)
76.9% (5T)
79.6% (6T)
54
All
81.3% (35T)
74.5% (22T)
79.2% (16T)
216
Qualitative results. The characteristic failures of recency memory surface by mid-video and
compound from there: subjects lose identity or duplicate, a second subject that enters mid-video never
stabilizes, and the scene's style and layout gradually migrate away from the prompt. With RECAP-Forcing,
the same base model holds subject identity, scene, and style through the full minute — including
subjects introduced long after the opening frame — while motion remains natural rather than
frozen.
Qualitative results on four one-minute prompts spanning photographic, claymation, and
cartoon styles. Across all scenes, the baseline loses subject identity, style, scale, or background
consistency; RECAP-Forcing preserves the subject(s) and the full scene throughout the minute.
The memory also holds far past the benchmark horizon: over five-minute videos, DINOv2 similarity to
frame 0 decays to 0.61 for the recency baseline, while RECAP-Forcing stops decaying after the first
minute and holds at 0.81 — full analysis in Supplementary Analysis.
04Supplementary Analysis
The supplementary material, organized: implementation details, length
generalization, appearance-memory and identity studies, memory-bank analysis, inference cost, and a
camera–object motion decomposition.
AImplementation Details
Our primary baseline is Self-Forcing, a DMD-distilled causal
autoregressive video diffusion model built on Wan2.1-T2V-1.3B. The model generates 832×480 video
block by block (3 latent frames per block) with a sliding KV cache; each latent frame is a 30×52
grid of 1,560 tokens, and the attention window covers 6 latent frames. A 60-second video is a rollout
of 240 latent frames (80 blocks). The other backbones use their public checkpoints and inference code
unchanged, with RECAP-Forcing attached as the same inference hook. After every block, per-pixel
appearance novelty is computed with RAFT-small at half resolution (12 refinement iterations) and
max-pooled onto the 30×52 patch grid; refills are incremental — only newly admitted
positions are copied, and only activations of still-novel tokens are retained in the history —
which keeps the per-block cost constant. RECAP-Forcing introduces no learned parameters and requires
no fine-tuning: the single hyperparameter setting of the table in Section 02 is shared across all
backbones, video lengths, and prompt sets.
BLength Generalization
Evaluating video durations from 5 to 60 seconds, RECAP-Forcing consistently achieves higher Dynamic
Degree across all lengths, with the gain reaching +10.1 points at 60 s, while Subject Consistency
remains comparable to the baseline — the method sustains strong dynamics in longer videos
without sacrificing consistency.
Length sweep (Baseline vs RECAP-Forcing, 5–60 s; error bars show ±std
over 5 seeds). (a) Higher Dynamic Degree across all lengths. (b) Subject Consistency remains
comparable to the baseline.
CAppearance Memory and Identity Preservation
Does the appearance information stored by RECAP-Forcing remain useful over long horizons? We
consider increasingly demanding settings: identity preservation under continuous visibility, retention
over substantially extended rollouts, and controlled reappearance after the subject has been absent
for much longer than the local attention window.
C.1Long-horizon Subject Identity
We stage 20 prompts in which a distinctive subject stays on screen for the full minute (5 seeds per
arm) and measure whether it still looks like itself at the end. Identity is measured by DINOv2
similarity between an early window (2–8 s) and the final 10 s, computed both on the
full frame and on the subject crop obtained from a Qwen2.5-VL detector (top-1 box for the subject
phrase with a 15% margin; detection rate 97%). The two arms are compared pairwise per prompt and seed.
RECAP-Forcing clearly improves both identity measures.
20 prompts × 5 seeds, 60 s; DINOv2 similarity between an early window and the final 10 s, on the full frame and on the detected subject crop.
Configuration
Frame Sim.
Wins
Crop Sim.
Wins
Baseline
0.745
–
0.642
–
+ Ours
0.850
76%
0.696
64%
C.2Identity Retention Over Extended Horizons
To quantify how long this stability persists, we measure identity retention as the DINOv2
similarity of each frame to frame 0; the same prompts and frame times are used for both methods,
so the gap between the curves is the meaningful quantity. Over five minutes the recency
baseline decays to 0.61, while RECAP-Forcing stops decaying after the first minute and holds identity
flat to the end (0.81 at 1 min and at 5 min).
20 prompts × 5 seeds; DINOv2 cosine to frame 0; higher holds identity; "mid"/"end" are 1/5 min for the five-minute rows and 30/60 s for the 60-second rows.
Horizon
Method
start
mid
end
5 min
Baseline
1.00
0.63
0.61
+ Ours
1.00
0.81
0.81
60 s
Baseline
1.00
0.70
0.62
+ Ours
1.00
0.87
0.88
C.3Controlled Reappearance
The identity studies above test whether appearance stays stable while the subject remains visible;
the motivating use case for persistent memory is more demanding — a subject disappears for
longer than the attention window and must later return with the same identity. A prompt-only
benchmark is unreliable here: current backbones cannot execute staged temporal instructions
(mentioned entities appear immediately and essentially never leave), so we construct the test
directly at inference time. Each video is one continuous rollout of four prompt segments: an empty
scene (3 s), the subject present (6 s), the same scene explicitly empty (7.5 s, five
times the 1.5 s attention window), and the subject re-conditioned (7.5 s). At every segment
boundary the sliding window is cleared while the sink and the bank persist; because the opening scene
contains no subject, the subject never enters the sink, and the bank is the only channel that can
carry its appearance across the gap. A Qwen2.5-VL check verifies the intended timeline (subject detected in its two segments and absent
during the gap), and identity is scored by the same dual metric between the first-appearance and return
windows. The base model re-invents the subject
from the prompt alone — often with visibly different appearance — whereas with
RECAP-Forcing the returning subject is rendered against its stored first-appearance states, of which
several hundred remain resident in the bank at the moment of return in every rollout.
20 scenarios × 5 seeds; subject enters, leaves for a 7.5 s gap (5× the attention window) with the sliding window cleared at every shot boundary, then is re-conditioned; DINOv2 similarity between the first-appearance and return windows.
Configuration
Frame Sim.
Wins
Crop Sim.
Wins
Baseline
0.699
–
0.648
–
+ Ours
0.752
73%
0.688
66%
DMemory Bank Analysis
Persistent appearance memory improves long-horizon identity; we now analyze the mechanism itself:
which historical states should be admitted into the bank, and whether the resulting memory remains
genuinely time-neutral rather than degenerating into a recency buffer.
D.1Admission Rule: What Should Enter the Bank?
We vary only the bank admission rule under the main protocol (128 prompts × 5 seeds).
Random History samples entries uniformly from previously observed content; Recent
History retains the most recently observed entries; DINOv2 Diversity embeds all historical
candidates with DINOv2 and applies K-means to select representatives near the cluster centers,
favoring diversity in semantic feature space; Flow Novelty (ours) admits candidates according
to the novelty of their optical-flow maps. Random and recency-based selection provide little benefit:
they improve Dynamic Degree by only +1.1 and +0.7 over the no-bank baseline (62.4/62.0 vs 61.3), and
random selection even lowers the Total (77.7 vs 78.3). DINOv2 Diversity improves the Total to 79.4
but does not recover motion (60.6) — diversity in semantic feature space is not the signal the
bank needs. Flow Novelty raises Dynamic Degree to 71.3 (+10.0) while preserving consistency and
achieves the best Total (79.7): what enters the bank matters, and admission by appearance novelty is
substantially more effective than retaining arbitrary, recent, or semantically diverse history.
Bank admission rules under the main protocol: 128 prompts × 5 seeds, on Infinite-Forcing.
Admission rule
S.C.
B.C.
M.S.
D.D.
A.Q.
I.Q.
Q.
Sem.
Total
No Bank (Baseline)
97.4
95.9
98.4
61.3
55.8
68.8
82.2
62.9
78.3
Random History
97.1
96.9
98.5
62.4
56.4
69.2
82.4
58.7
77.7
Recent History
97.4
96.1
98.4
62.0
56.0
69.0
82.3
64.2
78.7
DINOv2 Diversity
97.6
96.1
98.6
60.6
57.6
69.4
82.9
65.6
79.4
Flow Novelty (Ours)
97.4
96.0
98.4
71.3
57.5
68.8
83.3
65.4
79.7
D.2Bank Retention Behavior
To empirically verify time-neutral retention, we log per-block bank traces over 220 rollouts. At each
step, the bank closely matches the top-K candidates among all items observed so far, ranked by
their frozen scores, achieving a final-state overlap of 0.99; the small residual discrepancy is
attributable to score ties. Consequently, eviction removes almost exclusively below-cutoff admissions,
predominantly near-zero-score content admitted while the bank is still filling. Moreover, the
source-frame ages of the final bank entries are distributed roughly uniformly across the rollout, with a
mean age near the midpoint of the video. This behavior is characteristic of time-neutral retention:
survival is determined by novelty rather than recency.
EInference Cost
Wall-clock time for generating 1-, 2-, and 5-minute videos on a single GH200 GPU: RECAP-Forcing
incurs a roughly constant 1.6× overhead that does not increase with video length. A naive bank
refill would scale quadratically with duration and require hundreds of GB of cached history; instead, we
store only novel-token activations and refill bank slots incrementally, reproducing the naive path
bit-identically while keeping the per-block cost constant.
Generation time for a single 832×480 video on an 80 GB GH200 GPU.
Length
Frames (blocks)
Baseline
Ours
Overhead
1 min
240 (80)
185 s
288 s
1.56×
2 min
480 (160)
268 s
450 s
1.68×
5 min
1200 (400)
1435 s
2239 s
1.56×
FIs the Gain Good Motion? A Camera–Object Decomposition Analysis
A natural concern is that the gain in Dynamic Degree is the cheap kind of motion — global
camera panning, which inflates the metric without improving the video. It turns out to be the opposite.
For each video we compute dense RAFT flow on frame pairs sampled every ~0.5 s, fit a global
homography with RANSAC, and decompose the flow into a homography-predicted camera component and a
residual object-motion component. RECAP-Forcing reduces the baseline’s camera motion
(1.20 → 0.90) while largely preserving object motion (0.71 → 0.66),
increasing the fraction of motion attributable to objects from 37% to 42% — it does not improve
the metric by injecting camera motion, but suppresses the baseline’s erratic global drift while
retaining most of the subject’s own motion. Dynamic Degree measures the fraction of videos whose
motion exceeds a genuine-motion threshold rather than mean flow magnitude, so it can increase even when
mean flow decreases: RECAP-Forcing pushes the baseline’s near-frozen clips above the threshold
while suppressing its runaway-drift outliers — the per-video total-flow deviation falls from
±2.9 to ±1.9 and the drift tail from 37 to 24 clips.
128 prompts; RAFT flow split by a RANSAC global homography; magnitudes in px per frame pair; drift tail counts videos whose mean total flow exceeds 2× the config median.
Config
Camera Flow
Object Flow
Object Fraction
Total Flow
Drift Tail
Baseline
1.204
0.710
0.380
1.914
37
+ Ours
0.897
0.659
0.408
1.556
24
05Comparison with the Baseline
Same checkpoint, same seed; RECAP-Forcing is applied purely at inference. The prompts stress
long-horizon identity — several script a second subject entering mid-video, exactly what recency memory
forgets and appearance-indexed memory keeps. Use the arrows or the thumbnails to browse all
32 examples.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A full-body shot of a man crafted entirely from rocks, walking through a dense forest. His rocky form is rugged and textured, with various shades of gray and brown. He strides confidently, his steps creating small ripples in the forest floor.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A delicate watercolor illustration of a red fox trotting through a quiet birch forest blanketed in snow. The fox's coat is a rich rust-orange with a white chest and black-stockinged legs, its thick tail streaming behind as it moves in a light, even gait. Slender white birch trunks repeat into the pale distance, their bark flecked with soft grey strokes, and loose washes of blue shadow pool across the drifts. Small puffs of snow lift from its paws with each step. The palette is muted and wintry, with soft blooms of pigment bleeding into the paper's texture. Snow lies untouched in every direction as the fox continues its steady trot. A low tracking shot follows at the fox's shoulder height, keeping its bright fur the focus.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A breathtaking nature documentary shot of a humpback whale gliding through deep, open blue ocean. The whale's massive body is a mottled slate-grey, barnacles crusting its long white-edged pectoral fins, which sweep slowly like wings as it swims. Shafts of sunlight pierce the surface far above, breaking into shimmering curtains that ripple across its back. A steady trail of small silver bubbles streams behind it. The surrounding water is a uniform, endless gradient of sapphire fading to darkness below, with drifting motes of plankton catching the light. The whale maintains an unhurried, continuous glide through the vast blue. The camera holds a slow parallel tracking shot at the whale's flank, conveying its serene, colossal grace.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
An extreme macro shot in a naturalistic style of a honeybee hovering at a cluster of lavender blossoms, drinking nectar in slow, deliberate sips. The bee's fuzzy amber-and-black body glistens with fine golden hairs, pollen dusting its hind legs in bright saffron clumps. Its wings beat in a shimmering blur while it works between the small purple petals. The background dissolves into a soft, uniform bokeh of mauve and green, with other stalks swaying as gentle out-of-focus shapes. Warm summer light saturates the frame, catching the translucent veins of the wings. The bee shifts calmly from blossom to blossom along the same swaying stalk. A razor-thin depth of field keeps the bee crisp in a steady, intimate close-up.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A cinematic wide shot of a lone rider swathed in flowing indigo robes and a loose cream headscarf, crossing an endless sea of golden desert dunes on a tall, sand-colored camel. The camel plants each padded foot with a slow, swaying gait, its tasseled saddle blanket woven in deep reds and oranges rocking gently with every step. Ripples of windblown sand texture the dunes, which repeat in soft identical waves to the horizon under a cloudless amber sky. Fine grains drift from the crests in thin veils, and long late-afternoon shadows stretch across the slopes. The rider sits relaxed and upright, at ease with the animal's rhythm. The camera tracks smoothly alongside, keeping rider and camel framed against the vast, unbroken dunes.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A vibrant cel-animated scene of a single hot air balloon drifting serenely above endless rolling green hills. The balloon's envelope is striped in cream, coral, and deep teal, with a small woven wicker basket swaying softly beneath it. The hills below repeat in gentle emerald waves, dotted with tiny wildflowers and threaded by the shadows of slow-moving clouds. The balloon rides a steady breeze, bobbing almost imperceptibly as its burner glows now and then with a soft orange flicker. The sky is a clear morning gradient of powder blue fading to pale gold near the horizon. Hand-painted clouds drift lazily past at a constant, unhurried pace. A wide, slowly drifting shot keeps the balloon centered in the tranquil sky.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A soft watercolor illustration of a young girl in a buttercup-yellow raincoat and red rubber boots walking slowly through a steady, gentle rain along a tree-lined park path. She holds a clear umbrella speckled with painted droplets, tilting it now and then as she strolls at an easy, wandering pace. Loose washes of green and grey suggest wet hedges and lawns on either side, with fine white lines of rain streaking down the paper. Puddles bloom with soft rippling rings around her boots. The palette is fresh and calm, the light silvery and even beneath a uniformly overcast sky. The rain falls at the same soothing rate throughout. A medium tracking shot follows a few steps behind, capturing her small, cheerful stride.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A whimsical 3D animated scene of a small plum-purple dragon curled contentedly atop a mound of glittering gold coins inside a warm candlelit cavern. The dragon's scales shimmer with iridescent highlights, tiny wings folded on its back, and its tail flicks in a slow, happy rhythm. It puffs perfect little smoke rings from its snout at regular intervals, each ring wobbling upward and dissolving into the amber gloom. Softly flickering torch flames line the rough stone walls, making the treasure sparkle with shifting points of light. Its half-closed emerald eyes convey deep, drowsy satisfaction. The cavern remains still and cozy around it. A close medium shot at coin level holds the dragon centered, savoring each looping ring of smoke.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A luminous oil painting in a romantic style of a white swan gliding across a still, dusky lake. The swan's plumage is rendered in creamy impasto strokes touched with lavender shadow, its slender neck curved in a perfect arc as it drifts with slow, dignified poise. Behind it trails a soft V of ripples that catches the last apricot light of evening. Water lilies float in loose clusters across the glassy surface, and a hazy treeline dissolves into violet mist at the far shore. The sky glows in blended bands of rose and amber, scattering broken shimmers of color around the bird. The swan paddles onward in an unbroken, tranquil line. A serene wide shot balances the swan against the glowing lake.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A fantasy 3D rendered scene of a gentle forest spirit shaped entirely from soft moss, tiny ferns, and dew-lit clover, walking slowly through an endless glade of towering ancient trees. Its rounded body glows faintly green from within, and miniature white flowers bloom along its shoulders, trembling with each unhurried step. Fireflies of golden light drift around it in slow orbits, and its footprints briefly glow before fading into the undergrowth. Shafts of hazy emerald light fall between the uniform mossy trunks that repeat into the misted depths. The spirit's pace is calm and constant, its small head turning gently to admire the ferns. A smooth low tracking shot follows through the undergrowth, wrapped in the glade's soft enchanted glow.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A delightful claymation scene of a rosy-cheeked garden gnome with a tall crimson felt hat and a snowy clay beard watering a bed of oversized daisies outside his mushroom-capped cottage. He tips a dented tin watering can in slow, looping passes, sparkling bead-like droplets pattering onto the petals, which bounce softly in response. His patched blue coat and tiny leather boots show charming fingerprint textures. The garden around him is a tidy, continuous border of clay flowers and pebble paths beneath a felt-cloth sky of even powder blue. Warm, diffused light gives every surface a handmade glow. He shuffles contentedly along the same flower bed, watering in rhythm. A fixed wide shot frames gnome and cottage like a storybook diorama.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A dynamic aerial drone shot of a windsurfer skimming across an open turquoise sea, leaning back against a taut lime-and-white sail as the board slices a clean white wake through the sparkling swell. Spray bursts rhythmically from the nose of the board, and the surfer's coral rash guard flashes in the bright sun. The sea rolls in long, even waves to a sharp horizon in every direction beneath a cloudless sky. Far off on that horizon, a second sail begins as a tiny bright sliver, growing steadily larger and clearer as it carves closer on the same wind, until it shares the frame as an equally clear subject. The scene settles into a balanced two-windsurfer composition, both riders slicing parallel wakes in a continuous, spray-flinging glide, tracked smoothly from above in glittering light.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
An enchanting macro shot of a ladybug trundling along a dew-beaded blade of grass, its lacquered scarlet shell gleaming with crisp black spots as morning light flares through the droplets. Its tiny legs work in a busy, constant rhythm, antennae tapping gently ahead, while the blade sways softly under its miniature weight. The background is a dreamy, uniform bokeh of glowing greens and golds. From that soft blur, a second ladybug gradually sharpens into focus as it climbs a neighboring blade, its red shell gaining clarity and sparkle as it draws level, until it shares the frame as an equally clear subject. The scene settles into a balanced two-ladybug composition, both beetles trundling along their parallel blades in a continuous, gentle rhythm, held in an extreme close-up with jewel-like dew light.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A rich oil painting in a chiaroscuro style of a cellist in a deep emerald gown performing in a vast candlelit chamber with dark velvet drapery. Her bow draws long, unhurried strokes across the strings, candle flames trembling in golden clusters around her, light pooling on the cello's glowing amber varnish. The rest of the chamber recedes into warm, even darkness. Within that darkness, a second cellist gradually resolves from the shadows, the candlelight slowly finding the curve of another cello and the folds of a wine-red gown, gaining presence stroke by stroke, until she shares the frame as an equally clear subject. The scene settles into a balanced two-cellist composition, both musicians bowing in a slow, continuous duet, their arms rising and falling in rhythm, framed in a stately medium-wide shot wrapped in candle glow.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A tender watercolor illustration of a silver-haired grandmother in a rose-pink cardigan knitting in a high-backed armchair beside a glowing hearth. Her wooden needles click in a steady, practiced rhythm, a ball of sky-blue yarn slowly turning in the basket at her feet, firelight blooming in warm washes across her gentle face. The cozy room holds shelves of faded books and a plump teapot on a side table, painted in soft amber tones. In the lamplit corner, a second grandmother gradually becomes distinct from the muted background wash, her lilac shawl and needles gaining color and definition as she settles into the opposite armchair, until she shares the frame as an equally clear subject. The scene settles into a balanced two-knitter composition, both women knitting in a continuous, clicking rhythm, framed in a warm, close domestic shot.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A graceful cinematic shot of a figure skater in a wine-red coat and white gloves gliding across a vast frozen lake at dusk, carving long, looping arcs into the pale blue ice. Her blades leave fine white curves that trail behind her steady, flowing strokes, breath drifting in soft clouds. The lake stretches smooth and identical to a treelined horizon silhouetted against a lavender-and-peach sky. From the far end of the ice, a second skater begins as a small dark glide of motion, growing steadily in size and clarity as he sweeps nearer stroke by stroke, until he shares the frame as an equally clear subject circling in tandem. The scene settles into a balanced two-skater composition, both tracing continuous, interweaving loops across the ice, filmed in a wide, slowly drifting shot in cold pastel light.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A child in a cozy winter outfit, blowing gently on a steaming mug of hot cocoa to cool it down. The child has rosy cheeks and warm mittens, with a look of anticipation and slight concentration on their face. They stand in a living room with a fireplace, the warm glow casting a soft, golden light on the scene. A few books and toys are scattered around, adding to the cozy atmosphere. The background shows a blurred view of a fireplace mantel with a wooden clock and some ornaments. The photo has a warm, homey feel. A close-up shot from a slightly lower angle.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A vibrant tropical fish swimming gracefully among colorful coral reefs in a clear, turquoise ocean. The fish has bright blue and yellow scales with a small, distinctive orange spot on its side, its fins moving fluidly. The coral reefs are alive with a variety of marine life, including small schools of colorful fish and sea turtles gliding by. The water is crystal clear, allowing for a view of the sandy ocean floor below. The reef itself is adorned with a mix of hard and soft corals in shades of red, orange, and green. The photo captures the fish from a slightly elevated angle, emphasizing its lively movements and the vivid colors of its surroundings. A close-up shot with dynamic movement.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A nighttime scene from a vintage film-style photograph, depicting a giant, otherworldly creature slowly walking down a desolate, rundown city street. Only one dim streetlamp casts flickering shadows, illuminating the creature's massive, imposing form. Its skin is rough and covered in peculiar growths, with glowing eyes that reflect the dim light. The creature's steps echo in the empty alleyways, creating a sense of eerie quiet. The background features crumbling buildings, broken windows, and trash-strewn sidewalks. The photo has a grainy texture and a muted color palette, capturing the haunting atmosphere of the scene. A medium shot with a slight tilt to the camera, emphasizing the creature's movement and presence.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A realistic photograph in a gritty urban style of a white and orange tabby alley cat dashing across a narrow back street alley during a heavy downpour. The cat is drenched, its fur matted and slick, and it looks determinedly for shelter. Its green eyes are wide and alert, focused intently on finding a safe place. The background is blurred, revealing a dimly lit alley with wet cobblestones and a few dilapidated buildings. The photo has a sharp focus on the cat, capturing its natural movements and the dynamic environment. A medium shot from a low angle, emphasizing the cat's urgency and the wet, urban setting.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A single white sheep bending down to drink water from a calm river. The sheep has fluffy wool, long curved horns, and soft brown eyes. It is positioned near the riverbank, with its front legs partially submerged in the clear water. The river flows gently, reflecting the surrounding greenery and blue sky. The background shows lush grass and trees along the riverbank, creating a serene pastoral landscape. The sheep's body is slightly tilted as it bends down to drink, emphasizing a natural and tranquil motion. Medium close-up shot focusing on the sheep and the river.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A Samoyed and a Golden Retriever dog are playfully romping through a futuristic neon city at night. The neon lights emitted from the nearby buildings glistens off of their fur.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
An extreme close-up of a gray-haired man with a beard in his 60s, he is deep in thought pondering the history of the universe as he sits at a cafe in Paris, his eyes focus on people offscreen as they walk as he sits mostly motionless, he is dressed in a wool coat suit coat with a button-down shirt, he wears a brown beret and glasses and has a very professorial appearance, and the end he offers a subtle closed-mouth smile as if he found the answer to the mystery of life, the lighting is very cinematic with the golden light and the Parisian streets and city in the background, depth of field, cinematic 35mm film.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A llama sits in a cozy reading nook, surrounded by plush pillows and soft blankets. Warm, golden lighting from a floor lamp creates a welcoming atmosphere. The llama reads a picture book aloud, using expressive voices for the characters. The camera captures the llama's animated face and the illustrations in the book.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A charming 3D animated scene of a small brass-and-copper robot with round aquamarine eyes polishing the enormous fresnel lens inside a lighthouse lamp room. It glides slowly around the glittering glass on a circular rail, sweeping a soft cloth in wide, even arcs that leave the prisms gleaming. Warm light refracts through the lens in shifting rainbow slivers that drift across its polished shell. Beyond the encircling windowpanes, a uniform veil of pale sea mist glows softly, holding the little room in its own quiet world. The robot's antenna bobs contentedly with each pass of the cloth. A slow orbiting shot circles with it around the great lens, savoring the looping, careful ritual.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A 35mm film photograph style scene of a silver-haired man in loose slate-grey cotton practicing tai chi on the smooth flagstones before a long vermilion temple wall. His arms sweep through slow, circular forms, weight shifting evenly from foot to foot in an unbroken, meditative flow. The wall runs on identically in both directions, its red paint softly weathered, and thin morning light lays a gentle sheen across the stones. Faint film grain and muted warm tones give the scene a timeless calm, a single sparrow flickering past far behind as an incidental speck. His breathing and movement keep one continuous tempo. The camera holds a steady lateral medium shot, drifting almost imperceptibly with his flowing forms.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A delicate watercolor illustration of a brown hare loping easily across an endless moor of blooming purple heather. Its long black-tipped ears sway with each springy stride, powerful hind legs folding and stretching in a light, even rhythm. Loose washes of violet and umber roll away in identical low swells to a soft pearly horizon, and dry grass stems flick past its flanks in fine brushline strokes. The overcast light is silvery and even, letting soft blooms of pigment bleed into the paper around the hare's warm fur. Its unhurried lope carries on without pause across the open ground. A low tracking shot follows at the hare's shoulder height, keeping its bright amber eye and flowing stride in focus.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A cozy claymation scene of a lilac clay octopus seated at a tiny upright piano in a snug parlor, all eight arms rippling across the keys in a rolling, continuous melody. Its big pearl-button eyes half close with pleasure as the arms rise and fall in overlapping waves, suction cups pressing the keys with soft, precise taps. The parlor wall behind repeats a hand-painted stripe of rose and cream wallpaper, and a small gramophone horn and potted fern sit in warm lamplight. Gentle thumbprints texture every clay surface. The flowing arpeggios loop on without pause, the octopus swaying gently on its stool. A fixed, slightly low medium shot frames performer and piano, delighting in the rippling eight-armed rhythm.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A vibrant cel-animated scene of an antique carousel turning slowly in an empty fairground, its painted horses rising and falling on twisted brass poles in a gentle, endless wave. The canopy is striped in ivory and ruby, hung with rows of warm golden bulbs that glow steadily against a calm dusk-blue sky. Hand-painted mirrors on the central column catch soft flashes of light with every rotation, and faint music-box notes seem to hang in the air. The surrounding fairground lies quiet and uniform, a smooth expanse of pale trodden grass fading into painted haze. The carousel keeps its slow, dreamlike spin without pause. A fixed wide shot holds the whole glowing wheel centered, letting its looping motion soothe the frame.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A naturalistic wildlife photography shot of a massive American bison plodding through steady, light snowfall across an open sagebrush plain. Frost clings to the dense chocolate wool of its hump and beard, and each deliberate step swings its great lowered head gently from side to side, breath pluming in rhythmic clouds. The plain stretches identically in every direction, low silver-green shrubs dusted white beneath a flat pearl-grey sky. Snowflakes drift at a constant, gentle rate, gathering on the animal's broad back as it walks. Its slow, unstoppable pace never varies. A long telephoto tracking shot keeps the bison large and sharp against the softly blurred plain, honoring its patient winter march.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
A delightful claymation scene of a wrinkly clay walrus lounging on a small ice floe, strumming a tiny ukulele with one broad flipper in a mellow, looping rhythm. Its magnificent yarn-textured whiskers bounce as its head sways, long ivory tusks gleaming, while the other flipper taps the ice in time. The surrounding sea is molded in smooth teal clay waves that rise and fall in a gentle, repeating swell beneath an even periwinkle felt sky. Little sculpted sparkles dot the floe's edge, and thumbprints texture every surface with handmade charm. The unhurried island tune strums on and on. A fixed, warmly lit wide shot frames walrus and floe like a tabletop postcard, swaying to the beat.
Baseline
Baseline + Ours (RECAP-Forcing)
Prompt
An enchanting macro shot of a swallowtail butterfly perched on a spiky purple thistle bloom, fanning its wings open and closed in a slow, hypnotic rhythm while its proboscis sips in delicate pulses. Sunlight glows through the wings' stained-glass panels of cream, black, and blue, and fine hairs on the thistle sparkle at the frame's edge. The background dissolves into a uniform dreamy bokeh of mauve and gold. Within that soft blur, a second swallowtail gradually sharpens from a pale fluttering shape as it settles on a neighboring bloom, growing steadily in size and clarity, until it shares the frame as an equally clear subject fanning in counterpoint. The scene settles into a balanced two-butterfly composition, both fanning and sipping in a continuous, gentle rhythm, held in a razor-focused close-up.
1 / 32
06Comparison with Training-Free Memory Methods
The same 32 prompts, now against three prior training-free memory methods, all applied
at inference only. Prior memories stabilize the rollout by freezing it; RECAP-Forcing restores motion while
holding identity.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A full-body shot of a man crafted entirely from rocks, walking through a dense forest. His rocky form is rugged and textured, with various shades of gray and brown. He strides confidently, his steps creating small ripples in the forest floor.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A delicate watercolor illustration of a red fox trotting through a quiet birch forest blanketed in snow. The fox's coat is a rich rust-orange with a white chest and black-stockinged legs, its thick tail streaming behind as it moves in a light, even gait. Slender white birch trunks repeat into the pale distance, their bark flecked with soft grey strokes, and loose washes of blue shadow pool across the drifts. Small puffs of snow lift from its paws with each step. The palette is muted and wintry, with soft blooms of pigment bleeding into the paper's texture. Snow lies untouched in every direction as the fox continues its steady trot. A low tracking shot follows at the fox's shoulder height, keeping its bright fur the focus.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A breathtaking nature documentary shot of a humpback whale gliding through deep, open blue ocean. The whale's massive body is a mottled slate-grey, barnacles crusting its long white-edged pectoral fins, which sweep slowly like wings as it swims. Shafts of sunlight pierce the surface far above, breaking into shimmering curtains that ripple across its back. A steady trail of small silver bubbles streams behind it. The surrounding water is a uniform, endless gradient of sapphire fading to darkness below, with drifting motes of plankton catching the light. The whale maintains an unhurried, continuous glide through the vast blue. The camera holds a slow parallel tracking shot at the whale's flank, conveying its serene, colossal grace.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
An extreme macro shot in a naturalistic style of a honeybee hovering at a cluster of lavender blossoms, drinking nectar in slow, deliberate sips. The bee's fuzzy amber-and-black body glistens with fine golden hairs, pollen dusting its hind legs in bright saffron clumps. Its wings beat in a shimmering blur while it works between the small purple petals. The background dissolves into a soft, uniform bokeh of mauve and green, with other stalks swaying as gentle out-of-focus shapes. Warm summer light saturates the frame, catching the translucent veins of the wings. The bee shifts calmly from blossom to blossom along the same swaying stalk. A razor-thin depth of field keeps the bee crisp in a steady, intimate close-up.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A cinematic wide shot of a lone rider swathed in flowing indigo robes and a loose cream headscarf, crossing an endless sea of golden desert dunes on a tall, sand-colored camel. The camel plants each padded foot with a slow, swaying gait, its tasseled saddle blanket woven in deep reds and oranges rocking gently with every step. Ripples of windblown sand texture the dunes, which repeat in soft identical waves to the horizon under a cloudless amber sky. Fine grains drift from the crests in thin veils, and long late-afternoon shadows stretch across the slopes. The rider sits relaxed and upright, at ease with the animal's rhythm. The camera tracks smoothly alongside, keeping rider and camel framed against the vast, unbroken dunes.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A vibrant cel-animated scene of a single hot air balloon drifting serenely above endless rolling green hills. The balloon's envelope is striped in cream, coral, and deep teal, with a small woven wicker basket swaying softly beneath it. The hills below repeat in gentle emerald waves, dotted with tiny wildflowers and threaded by the shadows of slow-moving clouds. The balloon rides a steady breeze, bobbing almost imperceptibly as its burner glows now and then with a soft orange flicker. The sky is a clear morning gradient of powder blue fading to pale gold near the horizon. Hand-painted clouds drift lazily past at a constant, unhurried pace. A wide, slowly drifting shot keeps the balloon centered in the tranquil sky.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A soft watercolor illustration of a young girl in a buttercup-yellow raincoat and red rubber boots walking slowly through a steady, gentle rain along a tree-lined park path. She holds a clear umbrella speckled with painted droplets, tilting it now and then as she strolls at an easy, wandering pace. Loose washes of green and grey suggest wet hedges and lawns on either side, with fine white lines of rain streaking down the paper. Puddles bloom with soft rippling rings around her boots. The palette is fresh and calm, the light silvery and even beneath a uniformly overcast sky. The rain falls at the same soothing rate throughout. A medium tracking shot follows a few steps behind, capturing her small, cheerful stride.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A whimsical 3D animated scene of a small plum-purple dragon curled contentedly atop a mound of glittering gold coins inside a warm candlelit cavern. The dragon's scales shimmer with iridescent highlights, tiny wings folded on its back, and its tail flicks in a slow, happy rhythm. It puffs perfect little smoke rings from its snout at regular intervals, each ring wobbling upward and dissolving into the amber gloom. Softly flickering torch flames line the rough stone walls, making the treasure sparkle with shifting points of light. Its half-closed emerald eyes convey deep, drowsy satisfaction. The cavern remains still and cozy around it. A close medium shot at coin level holds the dragon centered, savoring each looping ring of smoke.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A luminous oil painting in a romantic style of a white swan gliding across a still, dusky lake. The swan's plumage is rendered in creamy impasto strokes touched with lavender shadow, its slender neck curved in a perfect arc as it drifts with slow, dignified poise. Behind it trails a soft V of ripples that catches the last apricot light of evening. Water lilies float in loose clusters across the glassy surface, and a hazy treeline dissolves into violet mist at the far shore. The sky glows in blended bands of rose and amber, scattering broken shimmers of color around the bird. The swan paddles onward in an unbroken, tranquil line. A serene wide shot balances the swan against the glowing lake.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A fantasy 3D rendered scene of a gentle forest spirit shaped entirely from soft moss, tiny ferns, and dew-lit clover, walking slowly through an endless glade of towering ancient trees. Its rounded body glows faintly green from within, and miniature white flowers bloom along its shoulders, trembling with each unhurried step. Fireflies of golden light drift around it in slow orbits, and its footprints briefly glow before fading into the undergrowth. Shafts of hazy emerald light fall between the uniform mossy trunks that repeat into the misted depths. The spirit's pace is calm and constant, its small head turning gently to admire the ferns. A smooth low tracking shot follows through the undergrowth, wrapped in the glade's soft enchanted glow.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A delightful claymation scene of a rosy-cheeked garden gnome with a tall crimson felt hat and a snowy clay beard watering a bed of oversized daisies outside his mushroom-capped cottage. He tips a dented tin watering can in slow, looping passes, sparkling bead-like droplets pattering onto the petals, which bounce softly in response. His patched blue coat and tiny leather boots show charming fingerprint textures. The garden around him is a tidy, continuous border of clay flowers and pebble paths beneath a felt-cloth sky of even powder blue. Warm, diffused light gives every surface a handmade glow. He shuffles contentedly along the same flower bed, watering in rhythm. A fixed wide shot frames gnome and cottage like a storybook diorama.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A dynamic aerial drone shot of a windsurfer skimming across an open turquoise sea, leaning back against a taut lime-and-white sail as the board slices a clean white wake through the sparkling swell. Spray bursts rhythmically from the nose of the board, and the surfer's coral rash guard flashes in the bright sun. The sea rolls in long, even waves to a sharp horizon in every direction beneath a cloudless sky. Far off on that horizon, a second sail begins as a tiny bright sliver, growing steadily larger and clearer as it carves closer on the same wind, until it shares the frame as an equally clear subject. The scene settles into a balanced two-windsurfer composition, both riders slicing parallel wakes in a continuous, spray-flinging glide, tracked smoothly from above in glittering light.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
An enchanting macro shot of a ladybug trundling along a dew-beaded blade of grass, its lacquered scarlet shell gleaming with crisp black spots as morning light flares through the droplets. Its tiny legs work in a busy, constant rhythm, antennae tapping gently ahead, while the blade sways softly under its miniature weight. The background is a dreamy, uniform bokeh of glowing greens and golds. From that soft blur, a second ladybug gradually sharpens into focus as it climbs a neighboring blade, its red shell gaining clarity and sparkle as it draws level, until it shares the frame as an equally clear subject. The scene settles into a balanced two-ladybug composition, both beetles trundling along their parallel blades in a continuous, gentle rhythm, held in an extreme close-up with jewel-like dew light.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A rich oil painting in a chiaroscuro style of a cellist in a deep emerald gown performing in a vast candlelit chamber with dark velvet drapery. Her bow draws long, unhurried strokes across the strings, candle flames trembling in golden clusters around her, light pooling on the cello's glowing amber varnish. The rest of the chamber recedes into warm, even darkness. Within that darkness, a second cellist gradually resolves from the shadows, the candlelight slowly finding the curve of another cello and the folds of a wine-red gown, gaining presence stroke by stroke, until she shares the frame as an equally clear subject. The scene settles into a balanced two-cellist composition, both musicians bowing in a slow, continuous duet, their arms rising and falling in rhythm, framed in a stately medium-wide shot wrapped in candle glow.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A tender watercolor illustration of a silver-haired grandmother in a rose-pink cardigan knitting in a high-backed armchair beside a glowing hearth. Her wooden needles click in a steady, practiced rhythm, a ball of sky-blue yarn slowly turning in the basket at her feet, firelight blooming in warm washes across her gentle face. The cozy room holds shelves of faded books and a plump teapot on a side table, painted in soft amber tones. In the lamplit corner, a second grandmother gradually becomes distinct from the muted background wash, her lilac shawl and needles gaining color and definition as she settles into the opposite armchair, until she shares the frame as an equally clear subject. The scene settles into a balanced two-knitter composition, both women knitting in a continuous, clicking rhythm, framed in a warm, close domestic shot.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A graceful cinematic shot of a figure skater in a wine-red coat and white gloves gliding across a vast frozen lake at dusk, carving long, looping arcs into the pale blue ice. Her blades leave fine white curves that trail behind her steady, flowing strokes, breath drifting in soft clouds. The lake stretches smooth and identical to a treelined horizon silhouetted against a lavender-and-peach sky. From the far end of the ice, a second skater begins as a small dark glide of motion, growing steadily in size and clarity as he sweeps nearer stroke by stroke, until he shares the frame as an equally clear subject circling in tandem. The scene settles into a balanced two-skater composition, both tracing continuous, interweaving loops across the ice, filmed in a wide, slowly drifting shot in cold pastel light.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A child in a cozy winter outfit, blowing gently on a steaming mug of hot cocoa to cool it down. The child has rosy cheeks and warm mittens, with a look of anticipation and slight concentration on their face. They stand in a living room with a fireplace, the warm glow casting a soft, golden light on the scene. A few books and toys are scattered around, adding to the cozy atmosphere. The background shows a blurred view of a fireplace mantel with a wooden clock and some ornaments. The photo has a warm, homey feel. A close-up shot from a slightly lower angle.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A vibrant tropical fish swimming gracefully among colorful coral reefs in a clear, turquoise ocean. The fish has bright blue and yellow scales with a small, distinctive orange spot on its side, its fins moving fluidly. The coral reefs are alive with a variety of marine life, including small schools of colorful fish and sea turtles gliding by. The water is crystal clear, allowing for a view of the sandy ocean floor below. The reef itself is adorned with a mix of hard and soft corals in shades of red, orange, and green. The photo captures the fish from a slightly elevated angle, emphasizing its lively movements and the vivid colors of its surroundings. A close-up shot with dynamic movement.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A nighttime scene from a vintage film-style photograph, depicting a giant, otherworldly creature slowly walking down a desolate, rundown city street. Only one dim streetlamp casts flickering shadows, illuminating the creature's massive, imposing form. Its skin is rough and covered in peculiar growths, with glowing eyes that reflect the dim light. The creature's steps echo in the empty alleyways, creating a sense of eerie quiet. The background features crumbling buildings, broken windows, and trash-strewn sidewalks. The photo has a grainy texture and a muted color palette, capturing the haunting atmosphere of the scene. A medium shot with a slight tilt to the camera, emphasizing the creature's movement and presence.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A realistic photograph in a gritty urban style of a white and orange tabby alley cat dashing across a narrow back street alley during a heavy downpour. The cat is drenched, its fur matted and slick, and it looks determinedly for shelter. Its green eyes are wide and alert, focused intently on finding a safe place. The background is blurred, revealing a dimly lit alley with wet cobblestones and a few dilapidated buildings. The photo has a sharp focus on the cat, capturing its natural movements and the dynamic environment. A medium shot from a low angle, emphasizing the cat's urgency and the wet, urban setting.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A single white sheep bending down to drink water from a calm river. The sheep has fluffy wool, long curved horns, and soft brown eyes. It is positioned near the riverbank, with its front legs partially submerged in the clear water. The river flows gently, reflecting the surrounding greenery and blue sky. The background shows lush grass and trees along the riverbank, creating a serene pastoral landscape. The sheep's body is slightly tilted as it bends down to drink, emphasizing a natural and tranquil motion. Medium close-up shot focusing on the sheep and the river.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A Samoyed and a Golden Retriever dog are playfully romping through a futuristic neon city at night. The neon lights emitted from the nearby buildings glistens off of their fur.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
An extreme close-up of a gray-haired man with a beard in his 60s, he is deep in thought pondering the history of the universe as he sits at a cafe in Paris, his eyes focus on people offscreen as they walk as he sits mostly motionless, he is dressed in a wool coat suit coat with a button-down shirt, he wears a brown beret and glasses and has a very professorial appearance, and the end he offers a subtle closed-mouth smile as if he found the answer to the mystery of life, the lighting is very cinematic with the golden light and the Parisian streets and city in the background, depth of field, cinematic 35mm film.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A llama sits in a cozy reading nook, surrounded by plush pillows and soft blankets. Warm, golden lighting from a floor lamp creates a welcoming atmosphere. The llama reads a picture book aloud, using expressive voices for the characters. The camera captures the llama's animated face and the illustrations in the book.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A charming 3D animated scene of a small brass-and-copper robot with round aquamarine eyes polishing the enormous fresnel lens inside a lighthouse lamp room. It glides slowly around the glittering glass on a circular rail, sweeping a soft cloth in wide, even arcs that leave the prisms gleaming. Warm light refracts through the lens in shifting rainbow slivers that drift across its polished shell. Beyond the encircling windowpanes, a uniform veil of pale sea mist glows softly, holding the little room in its own quiet world. The robot's antenna bobs contentedly with each pass of the cloth. A slow orbiting shot circles with it around the great lens, savoring the looping, careful ritual.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A 35mm film photograph style scene of a silver-haired man in loose slate-grey cotton practicing tai chi on the smooth flagstones before a long vermilion temple wall. His arms sweep through slow, circular forms, weight shifting evenly from foot to foot in an unbroken, meditative flow. The wall runs on identically in both directions, its red paint softly weathered, and thin morning light lays a gentle sheen across the stones. Faint film grain and muted warm tones give the scene a timeless calm, a single sparrow flickering past far behind as an incidental speck. His breathing and movement keep one continuous tempo. The camera holds a steady lateral medium shot, drifting almost imperceptibly with his flowing forms.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A delicate watercolor illustration of a brown hare loping easily across an endless moor of blooming purple heather. Its long black-tipped ears sway with each springy stride, powerful hind legs folding and stretching in a light, even rhythm. Loose washes of violet and umber roll away in identical low swells to a soft pearly horizon, and dry grass stems flick past its flanks in fine brushline strokes. The overcast light is silvery and even, letting soft blooms of pigment bleed into the paper around the hare's warm fur. Its unhurried lope carries on without pause across the open ground. A low tracking shot follows at the hare's shoulder height, keeping its bright amber eye and flowing stride in focus.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A cozy claymation scene of a lilac clay octopus seated at a tiny upright piano in a snug parlor, all eight arms rippling across the keys in a rolling, continuous melody. Its big pearl-button eyes half close with pleasure as the arms rise and fall in overlapping waves, suction cups pressing the keys with soft, precise taps. The parlor wall behind repeats a hand-painted stripe of rose and cream wallpaper, and a small gramophone horn and potted fern sit in warm lamplight. Gentle thumbprints texture every clay surface. The flowing arpeggios loop on without pause, the octopus swaying gently on its stool. A fixed, slightly low medium shot frames performer and piano, delighting in the rippling eight-armed rhythm.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A vibrant cel-animated scene of an antique carousel turning slowly in an empty fairground, its painted horses rising and falling on twisted brass poles in a gentle, endless wave. The canopy is striped in ivory and ruby, hung with rows of warm golden bulbs that glow steadily against a calm dusk-blue sky. Hand-painted mirrors on the central column catch soft flashes of light with every rotation, and faint music-box notes seem to hang in the air. The surrounding fairground lies quiet and uniform, a smooth expanse of pale trodden grass fading into painted haze. The carousel keeps its slow, dreamlike spin without pause. A fixed wide shot holds the whole glowing wheel centered, letting its looping motion soothe the frame.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A naturalistic wildlife photography shot of a massive American bison plodding through steady, light snowfall across an open sagebrush plain. Frost clings to the dense chocolate wool of its hump and beard, and each deliberate step swings its great lowered head gently from side to side, breath pluming in rhythmic clouds. The plain stretches identically in every direction, low silver-green shrubs dusted white beneath a flat pearl-grey sky. Snowflakes drift at a constant, gentle rate, gathering on the animal's broad back as it walks. Its slow, unstoppable pace never varies. A long telephoto tracking shot keeps the bison large and sharp against the softly blurred plain, honoring its patient winter march.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
A delightful claymation scene of a wrinkly clay walrus lounging on a small ice floe, strumming a tiny ukulele with one broad flipper in a mellow, looping rhythm. Its magnificent yarn-textured whiskers bounce as its head sways, long ivory tusks gleaming, while the other flipper taps the ice in time. The surrounding sea is molded in smooth teal clay waves that rise and fall in a gentle, repeating swell beneath an even periwinkle felt sky. Little sculpted sparkles dot the floe's edge, and thumbprints texture every surface with handmade charm. The unhurried island tune strums on and on. A fixed, warmly lit wide shot frames walrus and floe like a tabletop postcard, swaying to the beat.
Baseline + Deep Forcing
Baseline + MemRoPE
Baseline + Rolling Sink
Baseline + Ours (RECAP-Forcing)
Prompt
An enchanting macro shot of a swallowtail butterfly perched on a spiky purple thistle bloom, fanning its wings open and closed in a slow, hypnotic rhythm while its proboscis sips in delicate pulses. Sunlight glows through the wings' stained-glass panels of cream, black, and blue, and fine hairs on the thistle sparkle at the frame's edge. The background dissolves into a uniform dreamy bokeh of mauve and gold. Within that soft blur, a second swallowtail gradually sharpens from a pale fluttering shape as it settles on a neighboring bloom, growing steadily in size and clarity, until it shares the frame as an equally clear subject fanning in counterpoint. The scene settles into a balanced two-butterfly composition, both fanning and sipping in a continuous, gentle rhythm, held in a razor-focused close-up.
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07Minute-Long Generations
The full one-minute RECAP-Forcing rollouts of the same 32 prompts, uninterrupted.
Click the caption to read the full prompt.
A full-body shot of a man crafted entirely from rocks, walking through a dense forest. His rocky form is rugge…
A full-body shot of a man crafted entirely from rocks, walking through a dense forest. His rocky form is rugged and textured, with various shades of gray and brown. He strides confidently, his steps creating small ripples in the forest floor.
A delicate watercolor illustration of a red fox trotting through a quiet birch forest blanketed in snow. The f…
A delicate watercolor illustration of a red fox trotting through a quiet birch forest blanketed in snow. The fox's coat is a rich rust-orange with a white chest and black-stockinged legs, its thick tail streaming behind as it moves in a light, even gait. Slender white birch trunks repeat into the pale distance, their bark flecked with soft grey strokes, and loose washes of blue shadow pool across the drifts. Small puffs of snow lift from its paws with each step. The palette is muted and wintry, with soft blooms of pigment bleeding into the paper's texture. Snow lies untouched in every direction as the fox continues its steady trot. A low tracking shot follows at the fox's shoulder height, keeping its bright fur the focus.
A breathtaking nature documentary shot of a humpback whale gliding through deep, open blue ocean. The whale&#x…
A breathtaking nature documentary shot of a humpback whale gliding through deep, open blue ocean. The whale's massive body is a mottled slate-grey, barnacles crusting its long white-edged pectoral fins, which sweep slowly like wings as it swims. Shafts of sunlight pierce the surface far above, breaking into shimmering curtains that ripple across its back. A steady trail of small silver bubbles streams behind it. The surrounding water is a uniform, endless gradient of sapphire fading to darkness below, with drifting motes of plankton catching the light. The whale maintains an unhurried, continuous glide through the vast blue. The camera holds a slow parallel tracking shot at the whale's flank, conveying its serene, colossal grace.
An extreme macro shot in a naturalistic style of a honeybee hovering at a cluster of lavender blossoms, drinki…
An extreme macro shot in a naturalistic style of a honeybee hovering at a cluster of lavender blossoms, drinking nectar in slow, deliberate sips. The bee's fuzzy amber-and-black body glistens with fine golden hairs, pollen dusting its hind legs in bright saffron clumps. Its wings beat in a shimmering blur while it works between the small purple petals. The background dissolves into a soft, uniform bokeh of mauve and green, with other stalks swaying as gentle out-of-focus shapes. Warm summer light saturates the frame, catching the translucent veins of the wings. The bee shifts calmly from blossom to blossom along the same swaying stalk. A razor-thin depth of field keeps the bee crisp in a steady, intimate close-up.
A cinematic wide shot of a lone rider swathed in flowing indigo robes and a loose cream headscarf, crossing an…
A cinematic wide shot of a lone rider swathed in flowing indigo robes and a loose cream headscarf, crossing an endless sea of golden desert dunes on a tall, sand-colored camel. The camel plants each padded foot with a slow, swaying gait, its tasseled saddle blanket woven in deep reds and oranges rocking gently with every step. Ripples of windblown sand texture the dunes, which repeat in soft identical waves to the horizon under a cloudless amber sky. Fine grains drift from the crests in thin veils, and long late-afternoon shadows stretch across the slopes. The rider sits relaxed and upright, at ease with the animal's rhythm. The camera tracks smoothly alongside, keeping rider and camel framed against the vast, unbroken dunes.
A vibrant cel-animated scene of a single hot air balloon drifting serenely above endless rolling green hills. …
A vibrant cel-animated scene of a single hot air balloon drifting serenely above endless rolling green hills. The balloon's envelope is striped in cream, coral, and deep teal, with a small woven wicker basket swaying softly beneath it. The hills below repeat in gentle emerald waves, dotted with tiny wildflowers and threaded by the shadows of slow-moving clouds. The balloon rides a steady breeze, bobbing almost imperceptibly as its burner glows now and then with a soft orange flicker. The sky is a clear morning gradient of powder blue fading to pale gold near the horizon. Hand-painted clouds drift lazily past at a constant, unhurried pace. A wide, slowly drifting shot keeps the balloon centered in the tranquil sky.
A soft watercolor illustration of a young girl in a buttercup-yellow raincoat and red rubber boots walking slo…
A soft watercolor illustration of a young girl in a buttercup-yellow raincoat and red rubber boots walking slowly through a steady, gentle rain along a tree-lined park path. She holds a clear umbrella speckled with painted droplets, tilting it now and then as she strolls at an easy, wandering pace. Loose washes of green and grey suggest wet hedges and lawns on either side, with fine white lines of rain streaking down the paper. Puddles bloom with soft rippling rings around her boots. The palette is fresh and calm, the light silvery and even beneath a uniformly overcast sky. The rain falls at the same soothing rate throughout. A medium tracking shot follows a few steps behind, capturing her small, cheerful stride.
A whimsical 3D animated scene of a small plum-purple dragon curled contentedly atop a mound of glittering gold…
A whimsical 3D animated scene of a small plum-purple dragon curled contentedly atop a mound of glittering gold coins inside a warm candlelit cavern. The dragon's scales shimmer with iridescent highlights, tiny wings folded on its back, and its tail flicks in a slow, happy rhythm. It puffs perfect little smoke rings from its snout at regular intervals, each ring wobbling upward and dissolving into the amber gloom. Softly flickering torch flames line the rough stone walls, making the treasure sparkle with shifting points of light. Its half-closed emerald eyes convey deep, drowsy satisfaction. The cavern remains still and cozy around it. A close medium shot at coin level holds the dragon centered, savoring each looping ring of smoke.
A luminous oil painting in a romantic style of a white swan gliding across a still, dusky lake. The swan'…
A luminous oil painting in a romantic style of a white swan gliding across a still, dusky lake. The swan's plumage is rendered in creamy impasto strokes touched with lavender shadow, its slender neck curved in a perfect arc as it drifts with slow, dignified poise. Behind it trails a soft V of ripples that catches the last apricot light of evening. Water lilies float in loose clusters across the glassy surface, and a hazy treeline dissolves into violet mist at the far shore. The sky glows in blended bands of rose and amber, scattering broken shimmers of color around the bird. The swan paddles onward in an unbroken, tranquil line. A serene wide shot balances the swan against the glowing lake.
A fantasy 3D rendered scene of a gentle forest spirit shaped entirely from soft moss, tiny ferns, and dew-lit …
A fantasy 3D rendered scene of a gentle forest spirit shaped entirely from soft moss, tiny ferns, and dew-lit clover, walking slowly through an endless glade of towering ancient trees. Its rounded body glows faintly green from within, and miniature white flowers bloom along its shoulders, trembling with each unhurried step. Fireflies of golden light drift around it in slow orbits, and its footprints briefly glow before fading into the undergrowth. Shafts of hazy emerald light fall between the uniform mossy trunks that repeat into the misted depths. The spirit's pace is calm and constant, its small head turning gently to admire the ferns. A smooth low tracking shot follows through the undergrowth, wrapped in the glade's soft enchanted glow.
A delightful claymation scene of a rosy-cheeked garden gnome with a tall crimson felt hat and a snowy clay bea…
A delightful claymation scene of a rosy-cheeked garden gnome with a tall crimson felt hat and a snowy clay beard watering a bed of oversized daisies outside his mushroom-capped cottage. He tips a dented tin watering can in slow, looping passes, sparkling bead-like droplets pattering onto the petals, which bounce softly in response. His patched blue coat and tiny leather boots show charming fingerprint textures. The garden around him is a tidy, continuous border of clay flowers and pebble paths beneath a felt-cloth sky of even powder blue. Warm, diffused light gives every surface a handmade glow. He shuffles contentedly along the same flower bed, watering in rhythm. A fixed wide shot frames gnome and cottage like a storybook diorama.
A dynamic aerial drone shot of a windsurfer skimming across an open turquoise sea, leaning back against a taut…
A dynamic aerial drone shot of a windsurfer skimming across an open turquoise sea, leaning back against a taut lime-and-white sail as the board slices a clean white wake through the sparkling swell. Spray bursts rhythmically from the nose of the board, and the surfer's coral rash guard flashes in the bright sun. The sea rolls in long, even waves to a sharp horizon in every direction beneath a cloudless sky. Far off on that horizon, a second sail begins as a tiny bright sliver, growing steadily larger and clearer as it carves closer on the same wind, until it shares the frame as an equally clear subject. The scene settles into a balanced two-windsurfer composition, both riders slicing parallel wakes in a continuous, spray-flinging glide, tracked smoothly from above in glittering light.
An enchanting macro shot of a ladybug trundling along a dew-beaded blade of grass, its lacquered scarlet shell…
An enchanting macro shot of a ladybug trundling along a dew-beaded blade of grass, its lacquered scarlet shell gleaming with crisp black spots as morning light flares through the droplets. Its tiny legs work in a busy, constant rhythm, antennae tapping gently ahead, while the blade sways softly under its miniature weight. The background is a dreamy, uniform bokeh of glowing greens and golds. From that soft blur, a second ladybug gradually sharpens into focus as it climbs a neighboring blade, its red shell gaining clarity and sparkle as it draws level, until it shares the frame as an equally clear subject. The scene settles into a balanced two-ladybug composition, both beetles trundling along their parallel blades in a continuous, gentle rhythm, held in an extreme close-up with jewel-like dew light.
A rich oil painting in a chiaroscuro style of a cellist in a deep emerald gown performing in a vast candlelit …
A rich oil painting in a chiaroscuro style of a cellist in a deep emerald gown performing in a vast candlelit chamber with dark velvet drapery. Her bow draws long, unhurried strokes across the strings, candle flames trembling in golden clusters around her, light pooling on the cello's glowing amber varnish. The rest of the chamber recedes into warm, even darkness. Within that darkness, a second cellist gradually resolves from the shadows, the candlelight slowly finding the curve of another cello and the folds of a wine-red gown, gaining presence stroke by stroke, until she shares the frame as an equally clear subject. The scene settles into a balanced two-cellist composition, both musicians bowing in a slow, continuous duet, their arms rising and falling in rhythm, framed in a stately medium-wide shot wrapped in candle glow.
A tender watercolor illustration of a silver-haired grandmother in a rose-pink cardigan knitting in a high-bac…
A tender watercolor illustration of a silver-haired grandmother in a rose-pink cardigan knitting in a high-backed armchair beside a glowing hearth. Her wooden needles click in a steady, practiced rhythm, a ball of sky-blue yarn slowly turning in the basket at her feet, firelight blooming in warm washes across her gentle face. The cozy room holds shelves of faded books and a plump teapot on a side table, painted in soft amber tones. In the lamplit corner, a second grandmother gradually becomes distinct from the muted background wash, her lilac shawl and needles gaining color and definition as she settles into the opposite armchair, until she shares the frame as an equally clear subject. The scene settles into a balanced two-knitter composition, both women knitting in a continuous, clicking rhythm, framed in a warm, close domestic shot.
A graceful cinematic shot of a figure skater in a wine-red coat and white gloves gliding across a vast frozen …
A graceful cinematic shot of a figure skater in a wine-red coat and white gloves gliding across a vast frozen lake at dusk, carving long, looping arcs into the pale blue ice. Her blades leave fine white curves that trail behind her steady, flowing strokes, breath drifting in soft clouds. The lake stretches smooth and identical to a treelined horizon silhouetted against a lavender-and-peach sky. From the far end of the ice, a second skater begins as a small dark glide of motion, growing steadily in size and clarity as he sweeps nearer stroke by stroke, until he shares the frame as an equally clear subject circling in tandem. The scene settles into a balanced two-skater composition, both tracing continuous, interweaving loops across the ice, filmed in a wide, slowly drifting shot in cold pastel light.
A child in a cozy winter outfit, blowing gently on a steaming mug of hot cocoa to cool it down. The child has …
A child in a cozy winter outfit, blowing gently on a steaming mug of hot cocoa to cool it down. The child has rosy cheeks and warm mittens, with a look of anticipation and slight concentration on their face. They stand in a living room with a fireplace, the warm glow casting a soft, golden light on the scene. A few books and toys are scattered around, adding to the cozy atmosphere. The background shows a blurred view of a fireplace mantel with a wooden clock and some ornaments. The photo has a warm, homey feel. A close-up shot from a slightly lower angle.
A vibrant tropical fish swimming gracefully among colorful coral reefs in a clear, turquoise ocean. The fish h…
A vibrant tropical fish swimming gracefully among colorful coral reefs in a clear, turquoise ocean. The fish has bright blue and yellow scales with a small, distinctive orange spot on its side, its fins moving fluidly. The coral reefs are alive with a variety of marine life, including small schools of colorful fish and sea turtles gliding by. The water is crystal clear, allowing for a view of the sandy ocean floor below. The reef itself is adorned with a mix of hard and soft corals in shades of red, orange, and green. The photo captures the fish from a slightly elevated angle, emphasizing its lively movements and the vivid colors of its surroundings. A close-up shot with dynamic movement.
A nighttime scene from a vintage film-style photograph, depicting a giant, otherworldly creature slowly walkin…
A nighttime scene from a vintage film-style photograph, depicting a giant, otherworldly creature slowly walking down a desolate, rundown city street. Only one dim streetlamp casts flickering shadows, illuminating the creature's massive, imposing form. Its skin is rough and covered in peculiar growths, with glowing eyes that reflect the dim light. The creature's steps echo in the empty alleyways, creating a sense of eerie quiet. The background features crumbling buildings, broken windows, and trash-strewn sidewalks. The photo has a grainy texture and a muted color palette, capturing the haunting atmosphere of the scene. A medium shot with a slight tilt to the camera, emphasizing the creature's movement and presence.
A realistic photograph in a gritty urban style of a white and orange tabby alley cat dashing across a narrow b…
A realistic photograph in a gritty urban style of a white and orange tabby alley cat dashing across a narrow back street alley during a heavy downpour. The cat is drenched, its fur matted and slick, and it looks determinedly for shelter. Its green eyes are wide and alert, focused intently on finding a safe place. The background is blurred, revealing a dimly lit alley with wet cobblestones and a few dilapidated buildings. The photo has a sharp focus on the cat, capturing its natural movements and the dynamic environment. A medium shot from a low angle, emphasizing the cat's urgency and the wet, urban setting.
A single white sheep bending down to drink water from a calm river. The sheep has fluffy wool, long curved hor…
A single white sheep bending down to drink water from a calm river. The sheep has fluffy wool, long curved horns, and soft brown eyes. It is positioned near the riverbank, with its front legs partially submerged in the clear water. The river flows gently, reflecting the surrounding greenery and blue sky. The background shows lush grass and trees along the riverbank, creating a serene pastoral landscape. The sheep's body is slightly tilted as it bends down to drink, emphasizing a natural and tranquil motion. Medium close-up shot focusing on the sheep and the river.
A Samoyed and a Golden Retriever dog are playfully romping through a futuristic neon city at night. The neon l…
A Samoyed and a Golden Retriever dog are playfully romping through a futuristic neon city at night. The neon lights emitted from the nearby buildings glistens off of their fur.
An extreme close-up of a gray-haired man with a beard in his 60s, he is deep in thought pondering the history …
An extreme close-up of a gray-haired man with a beard in his 60s, he is deep in thought pondering the history of the universe as he sits at a cafe in Paris, his eyes focus on people offscreen as they walk as he sits mostly motionless, he is dressed in a wool coat suit coat with a button-down shirt, he wears a brown beret and glasses and has a very professorial appearance, and the end he offers a subtle closed-mouth smile as if he found the answer to the mystery of life, the lighting is very cinematic with the golden light and the Parisian streets and city in the background, depth of field, cinematic 35mm film.
A llama sits in a cozy reading nook, surrounded by plush pillows and soft blankets. Warm, golden lighting from…
A llama sits in a cozy reading nook, surrounded by plush pillows and soft blankets. Warm, golden lighting from a floor lamp creates a welcoming atmosphere. The llama reads a picture book aloud, using expressive voices for the characters. The camera captures the llama's animated face and the illustrations in the book.
A charming 3D animated scene of a small brass-and-copper robot with round aquamarine eyes polishing the enormo…
A charming 3D animated scene of a small brass-and-copper robot with round aquamarine eyes polishing the enormous fresnel lens inside a lighthouse lamp room. It glides slowly around the glittering glass on a circular rail, sweeping a soft cloth in wide, even arcs that leave the prisms gleaming. Warm light refracts through the lens in shifting rainbow slivers that drift across its polished shell. Beyond the encircling windowpanes, a uniform veil of pale sea mist glows softly, holding the little room in its own quiet world. The robot's antenna bobs contentedly with each pass of the cloth. A slow orbiting shot circles with it around the great lens, savoring the looping, careful ritual.
A 35mm film photograph style scene of a silver-haired man in loose slate-grey cotton practicing tai chi on the…
A 35mm film photograph style scene of a silver-haired man in loose slate-grey cotton practicing tai chi on the smooth flagstones before a long vermilion temple wall. His arms sweep through slow, circular forms, weight shifting evenly from foot to foot in an unbroken, meditative flow. The wall runs on identically in both directions, its red paint softly weathered, and thin morning light lays a gentle sheen across the stones. Faint film grain and muted warm tones give the scene a timeless calm, a single sparrow flickering past far behind as an incidental speck. His breathing and movement keep one continuous tempo. The camera holds a steady lateral medium shot, drifting almost imperceptibly with his flowing forms.
A delicate watercolor illustration of a brown hare loping easily across an endless moor of blooming purple hea…
A delicate watercolor illustration of a brown hare loping easily across an endless moor of blooming purple heather. Its long black-tipped ears sway with each springy stride, powerful hind legs folding and stretching in a light, even rhythm. Loose washes of violet and umber roll away in identical low swells to a soft pearly horizon, and dry grass stems flick past its flanks in fine brushline strokes. The overcast light is silvery and even, letting soft blooms of pigment bleed into the paper around the hare's warm fur. Its unhurried lope carries on without pause across the open ground. A low tracking shot follows at the hare's shoulder height, keeping its bright amber eye and flowing stride in focus.
A cozy claymation scene of a lilac clay octopus seated at a tiny upright piano in a snug parlor, all eight arm…
A cozy claymation scene of a lilac clay octopus seated at a tiny upright piano in a snug parlor, all eight arms rippling across the keys in a rolling, continuous melody. Its big pearl-button eyes half close with pleasure as the arms rise and fall in overlapping waves, suction cups pressing the keys with soft, precise taps. The parlor wall behind repeats a hand-painted stripe of rose and cream wallpaper, and a small gramophone horn and potted fern sit in warm lamplight. Gentle thumbprints texture every clay surface. The flowing arpeggios loop on without pause, the octopus swaying gently on its stool. A fixed, slightly low medium shot frames performer and piano, delighting in the rippling eight-armed rhythm.
A vibrant cel-animated scene of an antique carousel turning slowly in an empty fairground, its painted horses …
A vibrant cel-animated scene of an antique carousel turning slowly in an empty fairground, its painted horses rising and falling on twisted brass poles in a gentle, endless wave. The canopy is striped in ivory and ruby, hung with rows of warm golden bulbs that glow steadily against a calm dusk-blue sky. Hand-painted mirrors on the central column catch soft flashes of light with every rotation, and faint music-box notes seem to hang in the air. The surrounding fairground lies quiet and uniform, a smooth expanse of pale trodden grass fading into painted haze. The carousel keeps its slow, dreamlike spin without pause. A fixed wide shot holds the whole glowing wheel centered, letting its looping motion soothe the frame.
A naturalistic wildlife photography shot of a massive American bison plodding through steady, light snowfall a…
A naturalistic wildlife photography shot of a massive American bison plodding through steady, light snowfall across an open sagebrush plain. Frost clings to the dense chocolate wool of its hump and beard, and each deliberate step swings its great lowered head gently from side to side, breath pluming in rhythmic clouds. The plain stretches identically in every direction, low silver-green shrubs dusted white beneath a flat pearl-grey sky. Snowflakes drift at a constant, gentle rate, gathering on the animal's broad back as it walks. Its slow, unstoppable pace never varies. A long telephoto tracking shot keeps the bison large and sharp against the softly blurred plain, honoring its patient winter march.
A delightful claymation scene of a wrinkly clay walrus lounging on a small ice floe, strumming a tiny ukulele …
A delightful claymation scene of a wrinkly clay walrus lounging on a small ice floe, strumming a tiny ukulele with one broad flipper in a mellow, looping rhythm. Its magnificent yarn-textured whiskers bounce as its head sways, long ivory tusks gleaming, while the other flipper taps the ice in time. The surrounding sea is molded in smooth teal clay waves that rise and fall in a gentle, repeating swell beneath an even periwinkle felt sky. Little sculpted sparkles dot the floe's edge, and thumbprints texture every surface with handmade charm. The unhurried island tune strums on and on. A fixed, warmly lit wide shot frames walrus and floe like a tabletop postcard, swaying to the beat.
An enchanting macro shot of a swallowtail butterfly perched on a spiky purple thistle bloom, fanning its wings…
An enchanting macro shot of a swallowtail butterfly perched on a spiky purple thistle bloom, fanning its wings open and closed in a slow, hypnotic rhythm while its proboscis sips in delicate pulses. Sunlight glows through the wings' stained-glass panels of cream, black, and blue, and fine hairs on the thistle sparkle at the frame's edge. The background dissolves into a uniform dreamy bokeh of mauve and gold. Within that soft blur, a second swallowtail gradually sharpens from a pale fluttering shape as it settles on a neighboring bloom, growing steadily in size and clarity, until it shares the frame as an equally clear subject fanning in counterpoint. The scene settles into a balanced two-butterfly composition, both fanning and sipping in a continuous, gentle rhythm, held in a razor-focused close-up.
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BibTeX
@article{recapforcing2026,
title={RECAP-Forcing: REtaining Content APpearances for Long Video Generation},
author={Xu, Haiyang and Ding, Zheng and Tu, Zhuowen},
journal={arXiv preprint arXiv:2608.26671},
year={2026}
}
