What people actually use this for
Lecture and meeting recordings that only need the audio, music practice takes, podcast material recorded on a phone, interview audio for transcription, voice notes trapped in video files. In every case the video is dead weight — this page throws it away locally instead of paying to ship it across the internet and back.
Why local wins hardest here
Video files are big. A 20-minute 1080p recording is easily 1-2 GB — a 10+ minute upload on typical home internet, before conversion even starts, and most "free" tiers reject files that size outright. Your browser can read the audio track out of that same file in seconds. This is the single clearest case of upload converters selling you your own electricity.
FAQ
Is there a file size limit?
No fixed cap — device memory is the limit. Multi-GB files work best on a computer.
Does audio quality drop?
The track is decoded once and encoded to MP3 at your chosen bitrate — at 128 kbps and up, speech and most music are transparent. For archival-grade audio, use WAV output instead.
My video has no sound in the result?
Some screen recordings store audio in a second track browsers skip — we're adding multi-track support. Tell us if you hit one.