[FFmpeg-devel] [PATCH] Extract QP from h264 encoded videos

[Michael Niedermayer]

On Wed, Aug 07, 2019 at 12:59:33AM +0100, Mark Thompson wrote:
> On 05/08/2019 20:20, Juan De León wrote:
[...]
> 
> > +    /**
> > +     * Stores an id corresponding to one of the supported codecs
> > +     */
> > +    enum AVExtractQPSupportedCodecs codec_id;
> 
> enum AVCodecID, with this in libavcodec.

This may have interresting corner cases
like mpeg4 which can use h263 style or mpeg2 style quantization depending on a flag

so for these we may want the stored type to differ from the actual
decoder codec_id

and then the question of course arrises if a codec uses the same type
of quantization as another, should it use the same id as that other
or its own id. I think both have advantages and disadvantages

Thanks

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Everything should be made as simple as possible, but not simpler.
-- Albert Einstein
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