Extracting audio from a video
Quick answerUse MP4 to MP3. The audio quality depends entirely on the recording — extraction does not improve it.
A one-hour lecture video might be 500 MB to 2 GB. The same lecture as an MP3 is around 55 MB — small enough to keep on a phone and share easily.
How to do it
Open MP4 to MP3, upload the video, download the MP3. It works with MP4, MOV, MKV, AVI and WebM.
Choosing quality
- 128 kbps — plenty for speech, lectures and meetings.
- 192–320 kbps — for music, where more detail matters.
An important limit
Extraction copies the audio that is already in the video. If the recording was made in a noisy room or with the microphone far away, the MP3 will have exactly those problems. No processing step fixes a poor source recording.
Afterwards
Use Audio Trimmer to cut announcements or dead air from the start, and Audio Compressor if the file is still too large to share.
