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.