[Libav-user] how to use qscale in lib av api

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Apr 30 12:46:11 CEST 2013


Steffen <Steffen.Roeber at ...> writes:

>       formatContext->streams[0]->codec->bit_rate = bitrate;
>       if (qscale >= 0)
>       {
>         formatContext->streams[0]->codec->flags |= CODEC_FLAG_QSCALE;
>         formatContext->streams[0]->codec->global_quality = FF_QP2LAMBDA *
> qscale;

Without testing, I wonder if it makes sense to set both 
a bitrate and a global quality.

Which encoder are you using?

Carl Eugen



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