[Ffmpeg-devel] -ab 128 doesn't work with aac encoding?
Sat Aug 27 11:28:49 CEST 2005
Does it mean that the -ab option is just ignored when encoding in AAC?
or is it used to give the max value which should be used during
>On 25/08/05, Patrice Bensoussan <patrice.bensoussan at free.fr> wrote:
>> I'm trying to convert a WMA file to AAC 128kbit, but it seems the
>> doesn't work : when I use -ab 128, the created file is 94kbit
>> according to quicktime 7 :
>> Any idea what is happening? (i'm using the lastest ffmpeg cvs)
>AAC has no CBR method, at best, it is ABR. If the file does not have
>the complexity to require 128kbps, then it will be below the requested
>bitrate. I suspect that if you had a longer sample, it would more
>likely reach the bitrate.
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