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MP4 to MP3 Converter

Choose a local MP4 video that contains an audio track. The tool extracts and encodes that audio as an MP3 file without promising a quality higher than the source.

Choose an MP4 with audio, up to 10 minutes long. This tool reads your uploaded file, not a video URL. Maximum file size: 16 MB. Files are processed temporarily and deleted after the response.

Convert an uploaded MP4

Select an MP4 file no larger than 16 MB or longer than ten minutes. The processor checks that it is a genuine MP4 with audio, then uses ffmpeg to produce MP3. A silent video has nothing to extract and is rejected clearly.

This tool handles files already on your device. To analyze a public YouTube URL you may download, use the YouTube to MP3 tool instead.

YouTube to MP3 Converter

Sound quality and privacy

MP3 is a new lossy encoding of the source track. A higher bitrate cannot restore missing detail. Compare the output by listening before discarding the original video.

The upload is held only while the conversion runs; no permanent media library is created.