Quote:
Originally Posted by AnotherCat
The Apple audio is in a mp4 container so will play if you rename the file from .m4a to .mp4 - there may be some exceptions but the .m4a files I come across have always worked if just renamed. If ones audiobook reader does not support .mp4 then it can be played in ones video player.
But note that many android audiobook reader apps will play .m4a files - I use Smart Audiobook Player which does (and mp4 too).
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Correct. MP4 is a standard for media files. An MP4 file can contain audio only, video with an audio soundtrack, etc.
A file with a .mp4 extension is ambiguous, so .m4a is commonly used for MP4 audio-only files, .m4v for MP4 video files, .m4b for MP4 audiobook files (basically an MP4 audio file formatted as an audiobook with chapters, etc.), etc. They're all MP4 files.
The different extensions also make easier to associate different media types with different applications.