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| ==MP4 = MPEG-4==
| | #redirect [[MPEG-4]] |
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| MP4 (*'''.mp4''') is the global file extension for the official container format defined in the MPEG-4 standard [[ISO 14496-14]].
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| ==MP4 Filename Extensions==
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| * '''.mp4''': the only official extension; used for both audio and video files (and advanced content)
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| * '''.m4a''': introduced by Apple for aac/alac ''audio-only'' files.
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| NOTE: .m4a files can safely be renamed to .mp4 -- but the distinction between audio (m4a) and video (mp4) may be useful if you are going to share files, or if you tend to forget what files you have.
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| For complete details on MP4, see the following link:
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| *http://forum.doom9.org/showthread.php?s=&threadid=62723
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