Video to MP3 converter
Extract audio from any video file — entirely in your browser, no server upload, no file size limit on our end. Choose bitrate and trim the clip before extracting.
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MP4 · MKV · MOV · AVI · WebM — processed locally
Extraction against re-encoding
A video file is a container — MP4, MKV, WebM — holding separate video and audio streams. If the audio stream is already in a format you want, it can be copied out byte for byte with no quality change at all. This is stream copying, and it is both instant and lossless.
Re-encoding is required only when the target format differs from the source. Most MP4 files carry AAC audio, so extracting to MP3 means decoding the AAC and encoding MP3 — a second lossy generation, with the quality cost that implies. Extracting to M4A instead keeps the original AAC stream untouched.
The practical guidance is to prefer the container that matches the existing codec. Choose MP3 only when you need it for a device or platform that will not accept anything else, and if you do, encode at a generous bitrate to limit the damage of the second generation.
What bitrate the source allows
You cannot extract more quality than the video contained. If the source carries 128 kbps AAC, exporting to 320 kbps MP3 produces a larger file with no additional information — the extra bits encode the first encoder's artefacts more faithfully. Checking the source's audio bitrate before choosing an output setting avoids this.
Online video is generally encoded conservatively. Streaming platforms commonly deliver audio between 128 and 192 kbps, so extraction from a downloaded stream is limited to roughly that quality regardless of settings.
Speech content needs far less than music. A lecture or podcast extracted at 64 to 96 kbps mono is entirely adequate and a fraction of the size, and mono is correct for a single speaker — stereo doubles the file to encode two nearly identical channels.
What you may extract
Extracting audio from video you created, own or have licensed is unproblematic. So is extracting from material released under a permissive licence, or in the public domain.
Extracting the audio from someone else's video is copying a copyrighted work, and doing so generally falls outside what platform terms of service permit — downloading from most streaming services is prohibited by their terms regardless of what you do afterwards. Personal-use exceptions vary substantially by jurisdiction and are narrower than commonly assumed; several countries have no private copying exception at all.
Publishing extracted audio, using it in your own content, or distributing it is straightforwardly infringing without a licence, and both the composition and the recording carry separate rights where music is involved. For legitimate needs, many creators publish audio versions or licence their material explicitly.
Video to MP3 FAQ
Is my video uploaded anywhere?
No. The audio track is decoded with your browser’s built-in Web Audio engine and encoded to MP3 locally. Your video file never leaves your device.
What bitrate should I choose?
128 kbps is fine for speech and podcasts. 192 kbps is a good balance for music. 320 kbps is near-lossless for audiophiles. Note that the MP3 output can never exceed the quality of the audio track in the source video.
How fast is the conversion?
Fast — there is no big engine to download. The browser decodes the audio track natively and the MP3 encoder is a small script, so even long videos convert in seconds on a modern device.
What video formats are supported?
Any container your browser can play: MP4, WebM and MOV work everywhere; MKV and AVI work when the audio codec is supported by your browser. If a file fails to decode, try Chrome or Edge.
Will extracting to 320 kbps improve the audio?
No. You cannot exceed what the source contained — if the video carries 128 kbps AAC, a 320 kbps MP3 just stores those artefacts in a bigger file. Check the source bitrate first.
How do I avoid a second generation of quality loss?
Extract to a container matching the existing codec — usually M4A for AAC audio in an MP4 — so the stream is copied rather than decoded and re-encoded.