Get the audio out of a video
A talk, a lecture, an interview, a song someone sent as a video. The picture is a few hundred megabytes you do not need; the audio is a few.
The video track is genuinely discarded rather than carried along invisibly, which is the difference between a file you can put on a phone and one you can't.
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Worth knowing
- MP3 to listen, WAV to edit
- MP3 plays on everything and is about a tenth the size. WAV is uncompressed PCM, which is what an editor or a transcription tool wants to be handed — no second generation of lossy compression on top of whatever the video already did.
- FLAC is not an upgrade
- The audio inside a video file is already lossy. Extracting it to FLAC preserves it perfectly and improves it not at all — you get a much larger file holding the same sound. Choose it when something downstream demands FLAC, not for quality.
- Long recordings are fine
- There is no imposed length or size cap. The real limit is your machine: a browser tab has roughly 1.8 GB of working memory, and you are told before starting if a file will not fit rather than after twenty minutes.