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Subject: Re: Re: Update on M4A problem

Re: Re: Update on M4A problem

From: Vincent Mistretta <>
Date: Thu, 2 Aug 2007 6:58:22 -0500

When I have a chance this weekend, I'm going to take one of the cd's I ripped using this AAC Plus format and re-rip it to standard AAC and see what happens.


> From: "Dave Hooper" <>
> Date: 2007/08/01 Wed PM 05:34:32 EST
> To: "Rockbox" <>
> Subject: Re: Update on M4A problem
> >I reported yesterday that my MP4 files would play in RBX at a double speed
> >and choppy.
> >
> > I downloaded FooBar2000 and tried to Optimize the MP4 Layout. Before
> > doing so, Foobar2000
> > would play these files a bit strangely also. After Optimizing, FooBar
> > still had trouble.
> >
> > I went through my library and found some files I ripped using ITunes into
> > the MP4 format and they played
> > fine in both Foobar and RBX.
> >
> > The files not playing correctly are those I recently ripped using Winamp
> > and the AAC Plus format. These
> > files will only play ok under the Apple Firmware or Winamp.
> >
> > Vince
> Apparently, HE-AAC plays without problem in Rockbox on the Gigabeat players.
> But the AAC decoder is not highly optimised under Rockbox and uses more CPU
> than other alternative formats (such as MP4). I can't say what this has to
> do with FooBar, if anything. If FooBar cannot play the files but Winamp
> can, perhaps the AAC Plus files you have are nonstandard in some way. If
> possible, could you rerip using an alternative format?
Received on 2007-08-02

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