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.m4a file extension

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Apple Inc MPEG 4 file.

According to the MPEG-4 standard, the official file name for MPEG 4 files is .mp4. Contrary to this, Apple Inc use the .m4a file extension. Accordingly many applications that can play .mp4 files can also play .m4a files, although it may be necessary to rename the file to .mp4.

These files may be protected by DRM.

Can you add to this? Do you know of any applications not already listed which will work with .m4a files, view .m4a files or open .m4a files? Are you able to contribute any additional reference information or file format information about .m4a files or have you spotted any errors or omissions? If so please let us know by emailing us at feedback@cryer.co.uk - Thank you.