Video to Audio
Extract audio from videos in your browser — MP4, MOV, MKV, AVI or WebM in, MP3, M4A, OGG or WAV out. Batch convert, pick the bitrate, optionally trim. No uploads. Runs on your device — nothing is uploaded, nothing is stored.
Drop your videos here
MP4, MOV, WebM, MKV, AVI — multiple files welcome
Files you add will appear here.
This tool pulls the audio track out of a video and saves it as an audio file. Drop in one or more videos (MP4, MOV, WebM, MKV, AVI or M4V), choose MP3, M4A, OGG or WAV, pick a bitrate, and press Convert all. Each file gets its own row with a progress bar and a Download button, and the output keeps the original file name with the new extension.
For MP3, M4A and OGG you can choose 128, 192, 256 or 320 kbps; WAV is uncompressed 16-bit audio, so it has no bitrate option. A Trim control on each row takes a start and end time in mm:ss so you can keep just part of the audio. The conversion is done by ffmpeg compiled to WebAssembly (ffmpeg.wasm), the same engine used by the Video Converter and Compress Video tools.
Why this runs on your device
A video is often the most personal file on your device: a lecture, a call recording, a family clip. Here the file is read into your browser's memory, ffmpeg.wasm extracts the audio there, and the result is offered as a download, so the video is never uploaded. There is also no queue, daily limit or watermark of the kind hosted converters apply, and the only limit is your own machine.
- Drop one or more videos onto the page, or click to choose them.
- Choose the audio format and, for MP3, M4A or OGG, the bitrate.
- Optionally open Trim on a file and enter a start and end time.
- Press Convert all, then download each finished audio file.
- Each file can be at most 500 MB; larger files are skipped with a message. The video and the result both have to fit in the browser tab's memory, so a file near the limit can still fail on a low-memory device.
- ffmpeg.wasm runs on a single thread without hardware acceleration, so it is slower than a desktop converter. Long videos take noticeably longer, and files are converted one after another rather than in parallel.
- The output is always re-encoded to the format you pick, even if the video already contains MP3 or AAC audio, so there is a small quality loss for MP3, M4A and OGG. Choose WAV for the least loss, at a much larger file size.
- The tool does not set a sample rate or channel layout, so it keeps what ffmpeg picks for the source. There is also no volume control, fade or tag editing.
- A video with no audio track, or in a format ffmpeg cannot read, ends with a "No audio track found or unsupported format" message instead of a file. The Cancel button stops after the file currently being converted rather than interrupting it.