VideoFrames
Bring a file.
Video or audio, up to ten minutes. The browser decodes the audio track to PCM in this tab.
ONE FILE IN, ANOTHER OUT
Audio Converter
Decode a video or audio file and write a new WAV or MP3, with the channel layout and bitrate you choose.
One file in, another out.
Open a video or audio file and choose WAV or MP3. The decoded audio is re-encoded on this device.
WAV or MP3 · up to 10 minutes · no uploadOpen a video or audio file to convert its soundtrack.
THREE QUIET STEPS
Format, channels, export.
Pick an output.
WAV is lossless PCM. MP3 is smaller and offers 128–320 kbps. Keep the decoded channels or mix to mono.
Write the new file.
A local Worker encodes the result, then the browser downloads it. The source is never modified.
WHAT CHANGES
A new container, not new detail.
WAV is a direct write.
The decoded samples become 16-bit PCM. Nothing is compressed again, but the source’s existing quality is the ceiling.
MP3 is a second generation.
If the source was already lossy, going to MP3 loses a little more. The bitrate control decides how much space that takes.
The sample rate stays.
This release keeps the decoded rate instead of resampling. MP3 is offered only when that rate is supported.
A FEW GOOD QUESTIONS
Before you convert.
Can it convert any video to MP3?
It can convert the audio track of any file the browser can decode. Container support still depends on the browser: MP4/H.264, WebM and common audio files are the safe cases.
Will MP3 sound worse than the source?
MP3 is lossy, so a second encode can lose detail. At 192–320 kbps the difference is usually small, but WAV is the honest choice when you want the decoded samples unchanged.
Does it change the sample rate?
No. The decoded rate is kept. If that rate is outside MP3’s supported set, MP3 is disabled and WAV remains available.
What happens to multi-channel audio?
Sources with more than two channels are mixed down to mono for export. Standard mono and stereo sources keep their layout unless you choose mono.
Is my file uploaded to a server?
No. Decoding and encoding happen locally, with no media upload endpoint or account.