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AAC decoders different? iTunes-encoded gapless, Nero is not...

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sidewalking:
I was curious.  I enjoy Vorbis on my Rockboxed Sansa e260, but I will be inevitably getting a newer model 120 GB iPod Classic, thus pushing me back to testing AAC.  Nero-encoded stuff isn't gapless (even if encoded with Foobar), but when I pipe it through iTunesEncode.exe, it plays gaplessly on the Sansa.

Are different decoders used (I thought it was FAAD2, maybe)?  If not, does anyone know why the difference?

Thanks!

Llorean:
This isn't the place for discussing PC-side software. This isn't a general media player forum, it's for questions about Rockbox.

Lear:
Actually, this is a Rockbox question. :)

Anyway, for AAC to be gapless, the decoder need to read some extra information, written by the file by the encoder. Currently Rockbox knows where iTunes writes it, but not where Nero writes it.

Llorean:
He's asking about playing it on an iPod Classic. Those don't even run Rockbox. Our gapless support has nothing to do with what will successfully play on it.

Chronon:
His current observations regarding gaplessness are apparently made with an e260 (which might be Rockboxed).  So, a connection to Rockbox can be made.  Lear answered the implied Rockbox related question: Why would Rockbox play files produced by one encoder gaplessly, but not files produced by another?

Obviously, advice about what will or won't be gapless on a 120GB iPod Classic has no place here.

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