Show HN: Lessong - Turn any song into a language lesson

github.com

3 pointseschnou1 comment

A CLI that turns a mp3 into a language lesson with clearly spoken words and subtitles. This fully automated pipeline mimicks an old radio show called 'Plan Langue' popular for teens in the 80s to learn english. Check the video demo in the readme.

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Now, to be clear, I had no clue about things like demuxing a track, detecting a loop in a soundwave, overlaying text-to-speech on a song and cross-fading, let alone time syncing into a video. I just had the idea of the result I wanted. The rest was done by Opus 5.5 in a few hours. I'm still amazed by the result.

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