[Ffmpeg-devel] ac3enc.c modifications

Justin Ruggles jruggle
Sun May 15 18:09:44 CEST 2005

Michael Niedermayer wrote:
> ffmpeg should support vbr audio, maybe theres a problem with ac3 vbr or vbr 
> audio in mpeg

Well, I guess it's not the actual vbr audio I'm concerned with, but
adjustment of the vbr audio quality.  I can see how libavcodec could
support vbr audio.  One could just use the global_quality parameter in
AVCodecContext (that's the best choice I could find) to adjust the vbr
quality setting.  FFmpeg, however, does not have any commandline
parameters for this.  I guess ffmpeg.c could be patched to use a
parameter such as "-aq" to set the vbr audio quality.  This would be
useful for aac encoding as well.  If this sounds good, let me know and
I'll make a patch.

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