[FFmpeg-devel] [PATCH 03/12] lavfi: drop vf_qp

Jean-Baptiste Kempf jb at videolan.org
Thu Feb 27 13:32:07 EET 2020

On Thu, Feb 27, 2020, at 12:30, Anton Khirnov wrote:
> > Today, for example, when we want to visualize QP, we use libavcodec to
> > decode the frame, use another piece of code to extract the QP and overlay
> > both of them. This is almost (and i say ALMOST) decoding the frame twice.
> > (BTW, we can do that already with libavcodec for MV, so why not for QP)
> Thank you, finally there is a clear use case.

Thanks Thierry!

> > I agree that the current QP code (not feature) should be deprecated as it
> > does not work with newer codec.
> > But before removing the deprecated code, it will be nice to have the same
> > feature available with a newer API, so the features of
> > extracting/analyzing/overlaying QP still work.
> Yes, it does indeed sound reasonable to push this new API and convert
> the old code to it. The question remains if any of the people arguing
> for keeping those filters are also willing to do the conversion.

Lynne? Juan? Can it be done with the new API patches?

Jean-Baptiste Kempf -  President
+33 672 704 734

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