convert aac to m4a for free?

Discussion in 'iPod' started by AeroBar, Mar 12, 2010.

  1. AeroBar macrumors 6502a

    Joined:
    Jan 21, 2009
    #1
    Hello,

    I need to convert some AAC files into M4A files and import to iTunes.

    Is there a free program for a MAC that does this?

    I'm looking for a program to capture streaming audio from iTunes radio in .m4a format.

    I was using XStreamRipper which was perfect because it even separates the different tracks played into individual files and (if the radio station is transmitting it) track info like artist, title and duration.

    However, XStreamRipper is capturing in a format with an .aac extension and the only program I have that will play it (or even open it) is VLC player, but I want the files in iTunes.

    I have tried a load of audio converters, but none work with these.

    Can anybody help?

    Hello,

    I finally tracked down a program (Sound Converter)that converted the files to .m4a and they play in iTunes, but they play at a "slowed down" rate and the sound is distorted - voices are like watching a slow motion video.
     
  2. TheNightPhoenix macrumors 6502

    Joined:
    Dec 16, 2005
    #2

    I'm pretty sure AAc files are m4a just with different file extensions.
    do you have .aac files that itunes won't read?

    http://en.wikipedia.org/wiki/Advanced_Audio_Coding
     
  3. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #3
    Max is a great, free audio converter, but as noted above, M4A files are already in the AAC format. iTunes uses the M4A extension for an MPEG-4 / AAC audio file that is not DRM'd, and the M4P extension for an MPEG-4 / AAC audio file that is DRM'd.
     
  4. AeroBar thread starter macrumors 6502a

    Joined:
    Jan 21, 2009
    #4
    yes, iTunes will not import them nor will any sound converter I've tried convert the.

    I tried Max but it couldn't convert them.
     
  5. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #5
    Where did these files come from, exactly?
     
  6. AeroBar thread starter macrumors 6502a

    Joined:
    Jan 21, 2009
    #6
    I used XStreamRipper to capture streaming audio from iTunes Radio.

    But it it will not capture in a format I can import to iTunes.

    I finally tracked down a program (Sound Converter)that converted the files to .m4a and they play in iTunes, but they play at a "slowed down" rate and the sound is distorted - voices are like watching a slow motion video.
     
  7. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #7
    iTunes plays .aac files.

    http://en.wikipedia.org/wiki/ITunes#File_format_support
     
  8. AeroBar thread starter macrumors 6502a

    Joined:
    Jan 21, 2009
    #8
  9. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #9
    It looks like you might be running into an issue of an AAC variant that iTunes doesn't handle. Take a look at this issue in their issue list:

    http://code.google.com/p/xstreamripper/issues/detail?id=6

    A quick Googling for ADTS and for AACPlus indicated that you will have to translate some of these files, but at this point, I'm not any better than Google for answering your question. Hopefully someone who knows more will come along. :)
     
  10. AeroBar thread starter macrumors 6502a

    Joined:
    Jan 21, 2009
    #10
    Your better at Googling than me, brother!!

    That link is something I couldn't find.

    I already searched for converter for ADTS but there doesn't seem to be any.

    Thanks for the link.
     

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