[FFmpeg-devel] [PATCH] lavfi/vf_vpp_qsv: fix the infinite loop while framerate lower than input

[Zhong Li]

Fu, Linjie <linjie.fu at intel.com> 于2020年2月29日周六 下午5:35写道：
>
> > -----Original Message-----
> > From: Zhong Li <lizhong1008 at gmail.com>
> > Sent: Saturday, February 29, 2020 13:14
> > To: FFmpeg development discussions and patches <ffmpeg-
> > devel at ffmpeg.org>
> > Cc: Fu, Linjie <linjie.fu at intel.com>
> > Subject: Re: [FFmpeg-devel] [PATCH] lavfi/vf_vpp_qsv: fix the infinite loop
> > while framerate lower than input
> >
> > Linjie Fu <linjie.fu at intel.com> 于2020年2月28日周五 下午11:34写道：
> > >
> > > There are frame droppings in frc while converting into a lower framerate,
> > > and MSDK returns ERROR_MORE_DATA which should be ignored.
> >
> > Should be fixed in MSDK instead of working around in FFmpeg?
>
> MSDK made decision regarding frame rate conversion. If it's the framerate down case,
> FRC would skip frame without producing an output [1], and request a new input frame.

I can't see the benefit to use MSDK framerate conversion function. Is
it a good idea to drop it and use ffmpeg native fps filter instead?