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Subject: Re: Ipod RBX and M4A

Re: Ipod RBX and M4A

From: Magnus Holmgren <lear_at_algonet.se>
Date: Sun, 05 Aug 2007 23:58:34 +0200

Vincent Mistretta wrote:

> Yes they are HE AAC - high bit rate, recorded at 192.

Hmm... That should not be using HE-AAC, as it is intended for low
bitrates (less than 96 kbps or so), even when created by an
HE-AAC-capable encoder. Some programs show the actual AAC profile used.
E.g., Foobar2000 shows it as "Codec Profile"; if it really is HE-AAC it
will say "AAC SBR", otherwise "AAC LC".

I just tested a 192 kbps file created by Winamp 5.3 on my H140, and it
played just fine. It could be that the bitrate is too high for real-time
playback on ipods (but if so, then the bit about "playing at higher
speed" doesn't quite make sense...).

   Magnus
Received on 2007-08-05


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