video-extend

# Video Extension (Pusa 2.2 — temporal flowmatching) ## Overview Pusa extends a video temporally. It continues and lengthens an existing clip rather than regenerating it from scratch. It does this on the ComfyUI-WanVideoWrapper stack (kijai) using the WAN 2.2 T2V A14B dual HIGH/LOW models you already have for `wan-t2v-video`, plus the small Pusa V1 LoRAs and a Pusa-specific sampling path: the `flowmatch_pusa` scheduler and the `WanVideoAddPusaNoise` node. The input clip is encoded with `WanVideoEncode` and injected as the first latents of the generation, which is what carries the existing motion and content into the continuation. The official reference graph is kijai's `wanvideo_2_2_14B_Pusa_extension_example_01.json` (in `ComfyUI-WanVideoWrapper/example_workflows/`). This skill is built directly from that workflow plus the live node schemas. > Relationship to `wan-t2v-video`: Pusa rides on the exact same WanVideoWrapper > stack. Same T2V A14B HIGH/LOW fp8 models, same UMT5 text encoder, same WAN > VAE, same block-swap/torch-compile machinery. The only new downloads are the > two Pusa V1 LoRAs (~1.9 GB total). Read `wan-t2v-video` first for the base > stack; this skill is the temporal-extension delta on top of it. > Verification note: every node, model, LoRA filename and setting below was > confirmed against the live ComfyUI `/object_info` (WanVideoWrapper installed) > and against kijai's example workflow JSON + HF repo (June 2026). Where a value > is a starting recommen...