This is cool!
I'm curious now: how do you transcribe the videos? And how do you align the transcript with the video (in terms of timing)? Are there libraries doing that?
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Every video is transcribed to get much better transcripts than the closed captions. I filter on high quality transcripts, and afterwards a LLM selects only plausible segments for the exercises. This seems to work well for quality control and seems to be reliable enough for these short exercises.
Would love your thoughts!