Apple Lossless, iPods and bitrate in iTunes
Apple Lossless, iPods and bitrate in iTunes
- Subject: Apple Lossless, iPods and bitrate in iTunes
- From: email@hidden
- Date: Thu, 19 Jan 2006 18:49:58 -0500 (EST)
- Importance: Normal
I have an application (http://sbooth.org/Max/) that can encode files in
various Core Audio formats. I have run across strange issues that I can't
quite figure out with the Apple Lossless codec. I use the
ExtAudioFile API for the encoding to make my life simpler. As far as I
can tell everything is working correctly; the generated files open and
play in both iTunes and QuickTime Player. But, there seem to be two
issues with these files: some users are reporting that the files cause
their iPods to freeze three seconds into playback, and for some reason
iTunes does not detect the file's bitrate. (In the track list the bitrate
shows up as "Unknown" and in the Info panel the bitrate doesn't show up at
all. If I encode the same track with iTunes the bitrate shows up.)
My questions are these:
- I was under the impression that iTunes uses the Core Audio encoders
(which may be incorrect). If this is so, why the difference in files?
- Why would the bitrate not show up in iTunes? I don't believe this is
metadata. I also wonder if this could be related to the iPod crash.
Has anyone heard of anything like this before?
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