Nine accepted containers
Choose MP4, MOV, WebM, MKV, AVI, M4V, MPEG, MPG, or TS; the actual audio stream still has to be decodable.
Video to MP3 Converter
Convert MP4, MOV, WebM, MKV, AVI, M4V, MPEG, MPG, or TS video to MP3 at 128, 192, or 320 kbps. Trim locally with no upload or watermark.
Local conversion workspace
Convert video to audio
Your video stays on this device. Processing starts only after you click Convert.
0 bytes uploaded
0 bytes uploadedMulti-thread mode is used only when this browser supports SharedArrayBuffer and cross-origin isolation.
Video to MP3
One MP3 workflow for supported video files
Convert common local video containers without pretending every file contains the same codec.
Purposeful bitrate presets
Use 128 kbps for compact speech, 192 kbps as the balanced default, or 320 kbps to reduce added MP3 loss.
Trim before encoding
Limit the start and end time so the browser processes and downloads only the useful section.
Local workflow
How to convert video to MP3
Keep the source file available until the finished audio has been checked.
Choose a local video
Select one supported file up to 500 MB; pasted media URLs and cloud sharing links are not fetched.
Set range and quality
Trim unwanted sections, then match the MP3 bitrate to speech, mixed content, or music.
Convert, download, listen
Check the beginning, middle, and end before treating the MP3 as a usable derivative.
Verified product boundary
The media stays in this browser
The converter uses ffmpeg.wasm in a Worker instead of sending the selected file to an encoding service.
- Zero media bytes uploaded for conversion
- Cancel terminates the active Worker
- Temporary task storage is released after the result is read
FAQ
Video to MP3 questions
Practical answers about containers, codecs, quality, tracks, and browser limits.
The file picker accepts MP4, MOV, WebM, MKV, AVI, M4V, MPEG, MPG, and TS. A supported extension cannot guarantee every embedded codec is decodable.
The current release maps the first audio stream only. It does not yet offer language or commentary-track selection.
No. MP3 remains lossy at 320 kbps, and a higher bitrate cannot recreate detail already missing from the source.
No. Video frames are discarded, so 4K resolution and high frame rates do not improve the audio output.
No. This tool converts a video file already stored on the device and does not download media from third-party URLs.
Browser conversion can hold the engine, input, and output resources at the same time. The limit protects mobile memory and the WebAssembly file system.