Video to M4A converter — free online tool
Extract the audio of an MP4, MOV, M4V or WebM video as M4A (AAC) for Apple devices and video editors, at 96 to 320 kbps.
Audio
Video to M4A
Choose a file, adjust the edit, preview the result, and export it.
Or drop an MP4, MOV, or WebM video anywhere on this page.
What to know
Video to M4A writes the soundtrack as AAC audio inside an MPEG-4 audio container. Because most MP4 and MOV files already hold AAC, M4A is the format closest to what the video originally carried, which is a good reason to pick it for Apple and editing workflows.
Even so, the audio is decoded and encoded again rather than copied bit for bit. At the preselected 192 kbps the loss is small for speech, and 256 kbps is a comfortable level for a music video. A 4-minute clip at 256 kbps comes to 240 s x 32,000 bytes, about 7.7 MB.
Video soundtracks nearly always run at 48 kHz, so leaving Sample rate on Keep source avoids a needless resampling step. Choose Mono only when the original is a single microphone, since a stereo mix from a camera loses its spatial image when folded down.
The resulting file opens in Music, Files and QuickTime-style players, and drops straight onto the timeline of most video editors for voiceover cleanup or podcast repurposing.
Name your output predictably: a source called interview.mov gives interview-video-to-m4a.m4a, so several extractions from one shoot stay in order.
Choose a specific task 7
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How to use Video to M4A converter — free online tool
- Drop interview.mov (or MP4, M4V, WebM) into the video area on the M4A tab.
- Set Audio quality to 192 kbps for dialogue or 256 kbps for music.
- Leave Sample rate and Channels on Keep source.
- Extract, check the preview and download interview-video-to-m4a.m4a.
Quick answers
Is the audio copied without re-encoding?
No. It is decoded and encoded again as AAC at the bitrate you pick, even when the video already held AAC.
Why keep the sample rate unchanged for video audio?
Video is usually 48 kHz, and keeping it avoids a resampling step that adds nothing.
How large is a 4-minute extraction at 256 kbps?
About 7.7 MB, from 32,000 bytes per second over 240 seconds.
Will the M4A play on an iPhone?
Yes, AAC in an MPEG-4 audio container is a native Apple format.