[MPlayer-dev-eng] Re: samples which look bad when encoded with lavc 2-pass needed

Michael Niedermayer michaelni at gmx.at
Mon Jul 22 15:24:08 CEST 2002


Hi

On Monday 22 July 2002 15:00, Felix Buenemann wrote:
[...]
> > Oh, since you plan to rewrite the rate control code, could you include
> > also something to let us push up/down the bitrate (or quantizers) for
> > selected sets of the input ? For example to reduce the bitrate pressure
> > ending / starting credits put on the rest of the film.
> >
> > I have an example of something which could be nearly perfectly encoded
> > in 790 kbits/s but unfortunately the ending credits which happens to
> > scroll up over a live scene take a significant percent of the average
> > bitrate [avg br goes from 735 (just before ending credits) to 790
> > (real ending of the movie)].
>
> I personally think, that the ending credits deserve enough bitrate, because
> I hate it when they are encoded so low, that you can hardly read anything!
sure, the planned solution would be
lavcopts adj_rate=<start-frame>/<end-frame>/<bitrate-modifer>[/...]

Michael



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