The Video Generation Problem
True text-to-video models are either closed-source or cost a fortune per second of video. The open-source community relies on a different, cheaper approach: Video-to-Video.
Stable Video Diffusion & ComfyUI
The jugad involves taking a standard video (e.g., you waving) and running it through ComfyUI using AnimateDiff or Stable Video Diffusion. You use ControlNet to lock the motion and depth, then use AI to restyle the video entirely.
Audio-Driven Lip Syncing
Tools like SadTalker or Wav2Lip (open source) let you upload a static image and an audio file. The AI animates the image's mouth to perfectly match the words, creating instant free avatars.
