Free tool
Free tool to extract audio from video
Pull the soundtrack out of a video and save it on its own.
Your video
Drag a file here, paste it, or choose one.
.mp4, .mov, .webm, .mkv, .m4v. Up to 500 MB.
Up to 10 minutes long.
Your video never leaves your browser. The audio is pulled out on this machine.
Result
Worked example
Measured on our own 27 second launch film with a stereo AAC track, saved as MP3 at 192 kbps.
Source video
7.6 MB
MP3, 0:27
638 KB
Audio decodes far faster than video, so this finished in about two seconds. The same track as a 16 bit WAV would be several megabytes, which is the trade you are making when you pick WAV.
1. Add a video. 2. Pick a format. 3. Extract locally. 4. Download it.
What Interlace does
Need a voiceover? Start with a clear one.
- Natural AI voices, picked to fit the topic
- Voiceover in 28 languages from one script
- Scenes drawn and timed to the voice
Real Interlace output, unedited. Shown silent and sped up.
Your file
webinar-audio.mp3
Pulled from a 42 minute recording
Questions
Asked and answered
No. The file is read by the page, handed to ffmpeg compiled to WebAssembly, and written back out, all on your own machine. There is no upload step, and closing the tab discards everything.
MP3 at 192 kbps for anything you are going to send to a person, because it is a fraction of the size. WAV when a tool downstream wants uncompressed audio: transcription, an editor, or a mastering step. WAV files are large, roughly ten megabytes a minute in stereo.
Yes. The ffmpeg build we ship includes LAME, so the MP3 is encoded properly rather than swapped for another format behind your back.
The run stops and tells you the file has no audio track, rather than handing you an empty file.
500 MB and 10 minutes. Everything runs inside one browser tab, and a tab has a fixed memory budget. Past those limits the run gets slow or fails outright, so a desktop encoder is the better tool.
Turn this into a video
Create an account and start from a document, script, or prompt.