difference between .m4a and .m4r

Discussion in 'iOS Programming' started by newlearner, Aug 7, 2009.

  1. newlearner macrumors member


    Jul 30, 2009
    hello all,

    are there any technical differences between .m4a and .m4r?

    which file format do they implement?

    thanks a million....
  2. FAUCE macrumors newbie

    Aug 8, 2009
    im no expert but i know that M4a is either a Video or music format file and M4r is a ringtone format for The Iphone. i hope i helped : )
  3. chazzer56 macrumors newbie

    Dec 1, 2009
    m4a and m4r difference

    Hi, I haven't examined file headers or code but in my opinion there is no difference between these file formats only for the three letter extension. When making a ringtone for an iPhone, a sound file must be saved using the AAC format which gives it a .m4a extension. Change the 'a' on the extension to 'r' and it will be a ringtone. However please note - ringtones should be less than 40 seconds in length. This has worked for me.

    Another point worth mentioning is that iPhone SMS tones are in fact .aif files with file extensions changed to .caf. I'm not sure about the time limit on these sounds but they should be very short, around five seconds.

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