Image → 后 1 秒 · 开源视频模型横评

10 张 vtennis_lei_v0 静图 · 统一 prompt / seed / ~1s / 30 steps · A100-80G 单卡

成本与特征可提取性

模型成功秒/clip峰值显存
GB
生成分辨率生成长度运动量
flow px/f
位移
drift
DiT
层数
特征
维度
LTX-Video 13B
0.9.7-dev
28/1017.427.2832×480121f @ 25fps
裁到 25f
0.230.10282048
LTX-2 19B
dev bf16
28/1092.839.6768×51225f @ 24fps0.350.18484096
Wan2.2 TI2V-5B
dense 5B
28/1031.423.6832×48025f @ 24fps4.791.36303072
CogVideoX-5B
I2V
28/10283.831.8720×48049f @ 8fps
裁到 9f
1.770.30423072
HunyuanVideo-I2V
13B
28/10140.425.5832×48025f @ 24fps0.550.33203072
Wan2.2 I2V-A14B
MoE 2x14B
28/10185.327.9832×48017f @ 16fps0.760.45805120
MiniMax-H3 ← 前1s
33B · last_image
28/10567.577.8960x544124f @ 24fps
裁到 25f
0.900.19505376
MiniMax-H3 → 后1s
33B · image
28/10552.577.8—124f @ 24fps1.600.41505376
MiniMax-H3 ±1s 拼接
前1s+后1s · 2.0s
28/101120.077.8—49f @ 24fps——505376
运动量 = 人体框内平均光流幅值(px/帧),<0.5 视为「基本没动」(红色行); drift = 首尾帧骨架关键点位移 / 躯干长度。注意光流未剔除镜头运动,Wan2.2-5B 的高分含推拉镜头成分。

运动量 × 构图(验证「特写会冻住」)

模型full
n=16
mid
n=9
closeup
n=3
LTX-Video 13B0.380.050.03
LTX-2 19B0.540.130.00
Wan2.2 TI2V-5B4.964.873.65
CogVideoX-5B1.392.720.96
HunyuanVideo-I2V0.450.810.32
Wan2.2 I2V-A14B1.050.370.45
MiniMax-H3 ← 前1s0.631.241.31
MiniMax-H3 → 后1s1.591.611.60
单元格 = 该构图子集上的平均光流 (px/帧)。 构图由 pose 关键点判定:full=脚踝可见, mid=胯/膝可见, closeup=胯以上。

逐图对比

输入静图LTX-Video 13BLTX-2 19BWan2.2 TI2V-5BCogVideoX-5BHunyuanVideo-I2VWan2.2 I2V-A14BMiniMax-H3 ← 前1sMiniMax-H3 → 后1sMiniMax-H3 ±1s 拼接
01_forehand mid
Madrid Open 2016
02_forehand full
Agnieszka Radwanska Volley 6351
03_forehand closeup
Wimbledon Tennis Day 01 20062011
04_serve full
Sabine Lisicki, Court 4
05_serve full
IMG_1460
06_serve full
Bouchard 2
07_backhand full
2008 Indian Wells Tennis Pacific L
08_backhand full
Cirstea_9
09_volley mid
Mari Osaka
10_volley mid
Rafael Nadal practice session
11_forehand mid
TENNIS-WIMBLEDON-NADAL
12_forehand mid
2025 sports photography by norland
13_forehand full
Milos Raonic Forehand
14_forehand full
IMG_3188a Mitchell Green
15_forehand closeup
IMG_4055r Tom Oliphant
16_forehand mid
Barbora Zahlavova Strycova
17_backhand full
28 Mai 15 - French Open 2nd Round
18_backhand mid
Belinda Bencic
19_backhand closeup
Bemelmans backhand
20_backhand full
2008 Indian Wells Tennis Pacific L
21_backhand full
adsc_9742
22_backhand mid
Nuria Llagostera Vives, 1st Round,
23_serve full
DV_To_Getty_5754378_0
24_serve full
2012 Australian Open Tennis Champi
25_serve full
WTA Tennis - Justine Henin
26_serve mid
70-558
27_serve full
Prayer Service
28_serve full
P1_S04_McDermott