What is video audio extractor suitable for?
Audio extraction saves the soundtrack from courses, meetings, or media clips as a separate file. The tool runs ffmpeg.wasm locally in the browser, and videos are not uploaded.
M4A is smaller and easier to share; WAV is better for later editing but much larger.
Supported formats: MP4, MOV, WebM, AVI; single file limit: 500MB.
How to use video audio extractor
Step 1
Select video
Upload a video that contains an audio track.
Step 2
Choose audio format
Choose M4A or WAV and start extraction.
Step 3
Listen and download
Check the result in the audio player, then download it.
FAQ
Can it extract from a video without audio?
No. If the source has no audio track, processing may fail or produce an unusable result.
What is the difference between M4A and WAV?
M4A is smaller; WAV is better for editing but larger.
Will audio be uploaded?
No. Extraction is completed locally in the browser.
Technology and data sources
- ffmpeg.wasm — Official FFmpeg project documentation for running FFmpeg in the browser.
- Comlink — Open-source RPC library for communication between the page and a Web Worker.