How to convert MP4 to MP3
Sometimes you only need the sound from a video — a lecture, a meeting recording, or music from a clip — without carrying the much larger video file.
How to convert
- Open MP4 to MP3.
- Upload the video file.
- The audio is extracted automatically.
- Download the MP3.
File size benefit
A video file is typically many times larger than its audio alone — a one-hour video might be over 1 GB, while the same audio as an MP3 is often under 60 MB.
Quality expectations
The MP3's quality depends entirely on what was recorded — extraction can't improve audio that was noisy or distant in the original video.
For lecture and meeting recordings specifically
Long recordings benefit from a lower bitrate since voice does not need the same audio detail as music — 128kbps is generous for speech. Once extracted, use Audio Trimmer to cut any announcements or dead air from the start before sharing.
If the extracted audio has no sound
This points to the video's audio codec not being supported by the extraction — re-converting the source video to a standard format first with MOV to MP4 (or the matching converter for your format) before extracting usually resolves it.
Organising extracted audio files
If you regularly extract audio from lecture or meeting recordings, naming each MP3 with the date and topic immediately after extracting saves considerable time later compared to searching through a folder of generically-named audio files.
Related help articles
If you regularly need to extract audio from the same type of source — weekly meeting recordings, for example — building this into your regular workflow right after each recording, rather than doing it in a batch much later, keeps files organised and named while the context is still fresh.
