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CDex + nero aac wont VBR
post Jan 27 2012, 14:18
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i am trying to rip my cd collection using CDex + nero aac encoder at VBR, but i notice none of the aac files that i convert are VBR. But when i convert them with itunes i can see they are VBR.
This is the setting i am using for CDex+Nero aac encoder

and here is the comparisson of the same files ripped with itunes and CDex+Nero aac codec both at VBR 192kpbs, anyway the filed encoded with nero does not show the VBR info as itunes do.

what i want to do is to rip my music cds with nero encoder to true AAC VBR, not just AAC.
If anyone knows the best setting for Nero AAC VBR, please let me know it.

i hope somebody can help me
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post Jan 27 2012, 19:34
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Yes, I already checked your comparison when you posted it the first time....... smile.gif

It means that the iTunes encoder is probably constrained 192 kbit/s VBR, where the minimum frame size is equivalent to 192 kbit/s. The Nero encoder isn't constrained, so all frames are encoded to achieve the desired quality, and that means where the music is sufficiently compressible then the frames can be encoded at a lower effective bit rate, hence the overall bitrate is lower and the file is smaller. Alternatively, it could mean that the iTunes encoder is set to give you a higher quality level, and the bit rate being the same as one of the standard CBR bit rates (192 kBit/s) is just a coincidence.

The best setting for the Nero encoder is the one that is transparent to your ears. If you don't have time to do your own listening tests then q=0.5 is a good setting, but q=0.4 might also be just as good - it really depends on your ears and your listening environment.
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