Convert MP4 to M4A Online Free
Convert MP4 to M4A instantly in your browser. No uploads needed - your files stay private on your device.
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images, videos, audio, documents - all processed locally
Why extract audio from MP4?
- ✓Create audio-only versions for podcasts or music libraries
- ✓Reduce file size when video content isn't needed
- ✓Extract soundtracks, voiceovers, or background music
- ✓Prepare audio for editing in dedicated audio software
How to convert MP4 to M4A
Upload your file
Drag and drop your MP4 file onto the converter, or click to browse your files.
Select M4A as output
Choose M4A from the format dropdown. The converter will automatically detect your file type.
Convert instantly
Your file is processed entirely in your browser using WebAssembly. No upload needed.
Download your file
Click the download button to save your converted M4A file.
About MP4 format
MP4 is the most widely used video container format, supporting H.264/H.265 video codecs and AAC audio. It offers excellent compression while maintaining high quality, making it the standard for streaming, downloads, and video sharing. Nearly every device, platform, and media player supports MP4 playback.
Pros
- +Universal device and platform support
- +Excellent compression with H.264/H.265
- +Supports subtitles and multiple audio tracks
Cons
- -Lossy compression affects quality
- -Editing can be complex without re-encoding
- -Some advanced codecs may not play everywhere
About M4A format
M4A is an audio-only container format typically containing AAC or ALAC audio. Apple uses M4A extensively for iTunes music and purchases. It offers the same quality benefits as AAC with better metadata support, making it ideal for music libraries with album art and track information.
Pros
- +High quality AAC audio in container
- +Excellent metadata and artwork support
- +Native Apple ecosystem support
Cons
- -Less universal than MP3
- -Some older players don't support it
- -Can be confused with video M4V