Hi.

I'm studying the source code of ffmpeg.c, and interested to understand the
following flags - codec->global_quality, and stream->quality.

According to what I see in code, these 2 become equal one to each other,
only on qscale case, where they equalized to qscale * FF_QP2LAMBDA.

My question is - are these 2 always should be set when using fixed qscale?
Also, do they have any influence if set with variable scale (qmin/qmax)?

Regards.
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