Two official T2V entries
| Task flag | Model | Typical size | VRAM (official) | Notes |
|---|---|---|---|---|
| t2v-A14B | Wan2.2-T2V-A14B | 1280×720 or 480P | ≥ 80 GB single GPU | MoE high/low-noise experts |
| ti2v-5B | Wan2.2-TI2V-5B | 1280×704 or 704×1280 | ≥ 24 GB with offload | 720P @ 24 fps; hybrid T2V+I2V |
Official single-GPU commands
T2V-A14B (80 GB class)
python generate.py --task t2v-A14B --size 1280*720 --ckpt_dir ./Wan2.2-T2V-A14B --offload_model True --convert_model_dtype --prompt "Two anthropomorphic cats in comfy boxing gear and bright gloves fight intensely on a spotlighted stage."TI2V-5B (24 GB / 4090 class)
python generate.py --task ti2v-5B --size 1280*704 --ckpt_dir ./Wan2.2-TI2V-5B --offload_model True --convert_model_dtype --t5_cpu --prompt "Two anthropomorphic cats in comfy boxing gear and bright gloves fight intensely on a spotlighted stage"Multi-GPU uses torchrun with --dit_fsdp --t5_fsdp --ulysses_size. The README example for eight GPUs is the supported path when a single 80 GB card is not available.
What the stack does
- Text encoder: UMT5-XXL. Offload it with --t5_cpu if VRAM is tight.
- Backbone: flow-matching DiT. A14B switches experts by SNR; TI2V-5B is dense.
- Latents: Wan-VAE (2.1-style 4×8×8 on A14B; 2.2 4×16×16 on TI2V-5B).
- Prompt extension is recommended; see the prompt-extension wiki.
Quality claims to take from the source
The README positions Wan2.2 as topping Wan-Bench 2.0 versus several closed models, with more motion/semantic/aesthetic data than Wan2.1. Treat third-party “SOTA” tables as marketing unless they cite the same bench and the same 2.2 checkpoint (A14B vs 5B vs a quantized community pack).
FAQ
- Which size should I pass?
- A14B uses 1280*720 (or a 480P pair). TI2V-5B 720P is 1280*704 or 704*1280 — not 1280*720. That difference is in the official README.
- How long is a clip?
- The public recipes are short cinematic shots (on the order of 5 seconds). S2V duration follows the audio track instead.
- Diffusers?
- Yes. Wan-AI/Wan2.2-T2V-A14B-Diffusers and Wan2.2-TI2V-5B-Diffusers are listed in the July 28, 2025 news block.
Primary sources
Checked against Wan-Video/Wan2.2 README · Aug 28, 2026
