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Drop one AVI or two hundred. Batch conversion is not a paid feature here.
Convert AVI to MP3
Audio from an old video file, often a recorded lecture or a home video, needs to be saved separately.
Runs on your deviceFreeNo sign-upBatch supported
Audio is re-encoded on your device. The engine downloads once, then works offline.
Waiting for files/Engine: on-device/Network requests made: 0
What actually changes
AVI and MP3 are not the same picture in two wrappers.
The audio track is pulled out of the AVI and encoded as MP3.
Worth knowing first
Many AVI files already contain MP3 audio, in which case the stream can be copied out with no re-encoding at all. Re-encoding it anyway is a common and pointless quality loss, so check what is inside before converting.
Questions
AVI to MP3, answered
How do I tell what audio my AVI has?
The conversion report names the codec. MP3 and PCM are the two you will usually see.
The audio drifts out of sync. Why?
Variable frame rate video in an AVI. It affects the video timing, not the extracted audio, so an extracted track is often fine even when the video is not.
How to convert AVI to MP3
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Choose your settings
MP3 Audio is lossy, so the quality control decides the trade between size and fidelity.
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Download
Instant, because the file never went anywhere. Nothing expires, since nothing was stored.