Hunyuan 2step t2v and upscale — v1.7

Workflow for Hunyuan video that can generate a small resolution video first very quickly, then upscales it with Hunyuan v2v when you find one you like. There is a third step for upscaling and video interpolation.

Version 1.5 uses the fast video lora to generate the first video in 7 steps, significantly increasing the speed of the first generation without compromising the second.

Version 1.6 uses a TeaCache sampler to increase generation speed by 1.6 and optionally by 2.1 with worse quality.

Version 1.7 adds Wavespeed, which has increased speed for me by about 15 %. To use it you will need to clone the wavespeed repo in custom nodes. Some wavespeed functionality requires installing triton , but if you only use the "Apply first block cache" node you may not need it.

If you already have a video you simply want to upscale, you can connect the muted load video node to the top left connection in the "Upscale and Interpolation" group and mute the previous 2.