Video Compressor
Re-encode a small video as MP4 using an adjustable quality level.
Video & audioVideo & audio tools
MP4 to MP3 Converter
Extract the audio track from a video into an MP3.
Your workspaceProcessed in your browser
Loading workspace…
How to use mp4 to mp3 converter
- Choose a supported video file containing an audio stream.
- Select Process media to extract and encode an MP3 listening copy.
- Compare playback with the original and download the MP3.
Work through an example
Create an MP3 listening copy from a video, check that an audio stream exists, and understand the re-encoding and privacy limits.
Extract a video's audio into a separate MP3 →Formats, privacy, and practical limits
Desktop browsers recommended. Maximum input 50 MB. First use downloads a roughly 32 MB processing engine. Processing can be slow and memory intensive; keep this tab open. Output size reduction is not guaranteed.
Files and generated results exist only for this tab session. Download any result you want to keep before leaving the page. Browsers may use temporary memory or disk cache while processing.
Frequently asked questions
Does changing the extension extract audio?
No. The tool actually decodes the source audio and encodes a 192 kbps MP3. Renaming a video file would not perform that conversion.
What if the video has no audio?
The operation cannot create the missing sound. The processing engine reports an error when the required audio stream is absent.