I use libav libraries in my program, i want vary video quality encoding via
qscale,
after read ffmpeg.c i write following in my code:
AVCodecContext * enc = ...
AVStream *st = ...
enc->global_quality = st->quality = FF_QP2LAMBDA * qscale;
enc->flags |= CODEC_FLAG_QSCALE;
Then set format context, open encoder ("mpeg4") and encode my video stream.
but in output stream i get video stream with -sameq quality (it seems
quality doesn't depends on qscale (like qscale == 0 always in deep
structures of encoder or has even no sense)).
Somebody can hint which parameters connected with global_quality and
stream->quality may discard qscale?
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