On Ma, 2023-05-15 at 08:33 +0200, Hendrik Leppkes wrote:
> On Mon, May 15, 2023 at 8:04 AM Xiang, Haihao
> <haihao.xiang-at-intel....@ffmpeg.org> wrote:
> > 
> > From: Haihao Xiang <haihao.xi...@intel.com>
> > 
> > The mfx implementation based on D3D11 is expected for an internal
> > session on Windows, however sometimes this implemntation is not
> > supported [1]. A fallback to the default mfx implementation is added in
> > this patch.
> > 
> > [1] https://github.com/intel/cartwheel-ffmpeg/issues/246
> > 
> 
> From the issue description, the user is trying to use it a as software
> library, not a hardware one?

Yes, because the user has sw library only. 

> I don't think software fallback, especially an automatic one, is
> really quite appropriate. When someone requests a "qsv" encoder, they
> expect hardware.

It is not a software fallback. it is a fallback to the default one (which might
be hw based or sw based, it is up to user's hw and media stack). 

Thanks
Haihao

> 
> - Hendrik
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