[FFmpeg-devel] [PATCH 3/3] avcodec: Implement mpeg4 nvdec hwaccel

[Philip Langdale]

On Sun, 19 Nov 2017 23:35:24 +0100
Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> 2017-11-19 20:52 GMT+01:00 Philip Langdale <philipl at overt.org>:
> 
> > gmc_enabled: This seems to map to mc_sel being non-zero, but I also
> >              have no samples where that is true.  
> 
> Iirc, global motion compensation is not supported by hardware
> decoders.
> 

It's obviously hard to tell when you have no samples and no
documentation, but it would be weird if this flag existed only for the
hardware to give up if gmc was used. Still, it's all academic given the
complete lack of real world usage of gmc.

--phil