Premium workflow

Long Video Upscale — LTX 2.5

The whole clip, not the first three seconds. 2× and sharper, audio kept.

LTX can only hold about 73 frames at once, so most LTX upscalers quietly stop after three seconds. This one walks the clip in windows inside ComfyUI — one Queue press — and stitches video and audio back into one file. Refine strength is tuned to keep faces the same person.

Model

LTX 2.5

VRAM

48–96 GB

Level

Intermediate