MiniMax H3 is one of the few local models that generates audio with the video: ambient sound, footsteps, and speech that matches the mouth. That is a gift until you touch the clip. Upscaling in chunks, doubling the frame rate, stitching continuations — each step handles the audio differently, and a quarter-second of drift is enough to make a talking clip look dubbed. Here is how the pipeline keeps it together.
Academy / Video on one GPU / Lesson 4
Pro lesson · 6 min
Keeping audio in sync when you stitch
H3 generates sound with its pictures. Every edit after that, chunked upscales, frame interpolation, continuation clips, is a chance to lose sync. The rules that keep speech on the lips.
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