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Topic: Some problem on qaac 2.55 (Read 5750 times) previous topic - next topic
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Some problem on qaac 2.55

I encode some of my song to aac using latest qaac 2.55 and I copied it to android. But android won't recognize it bitrate. Android just put 0 in the kbps. But song that I encode using qaac doesn't have this problem. So is something wrong with qaac 2.55?
I will think about tomorrow's problem tomorrow

Some problem on qaac 2.55

Reply #1 –
https://sites.google.com/site/qaacpage/news
Quote
[qaac] release 2.51
posted Jun 28, 2015, 6:44 AM by nu 774

Always write zero into avgBitrate field in esds decConfigDescriptor to be spec compliant. Was writing actual average bitrate before (this was automatically done by libmp4v2). The spec says that in case of VBR, is should be zero.

Some problem on qaac 2.55

Reply #2 –
Is there a switch to turn it back on? I think there are people who like to see the actual bitrate...

Some problem on qaac 2.55

Reply #3 –
Quote from: Fairy on
Is there a switch to turn it back on? I think there are people who like to see the actual bitrate...

Use old version of qaac. I use qaac 2.49 to see the actual bitrate
I will think about tomorrow's problem tomorrow

Some problem on qaac 2.55

Reply #4 –
Quote from: Fairy on
Is there a switch to turn it back on? I think there are people who like to see the actual bitrate...

By creating non-compliant files? Why qaac has to take care of non-compliant softwares, instead of fixing them?
Since the spec clearly says that the avgBitrate field shall be zero in case of VBR stream, a player that shows the bitrate of the file is responsible to take care of it. And actually, the average bitrate can easily be computed from stream size and duration (elementary school level arithmetic).

As far as I can see, softwares such as fb2k, winamp, quicktime player, and poweramp correctly show bitrate of the files encoded by qaac 2.51 or later.
 
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