Re: [FFmpeg-devel] [PATCH v4 1/2] lavc/vaapi_encode: add support for maxframesize

["Wang, Fei W" <fei.w.wang-at-intel.com@ffmpeg.org>]

> -----Original Message-----
> From: Andriy Gelman <andriy.gelman@gmail.com>
> Sent: Saturday, March 26, 2022 11:21 PM
> To: Wang, Fei W <fei.w.wang@intel.com>
> Cc: ffmpeg-devel@ffmpeg.org
> Subject: Re: [PATCH v4 1/2] lavc/vaapi_encode: add support for maxframesize
> 
> On Wed, 23. Mar 08:51, Wang, Fei W wrote:
> > > -----Original Message-----
> > > From: Wang, Fei W <fei.w.wang@intel.com>
> > > Sent: Tuesday, March 22, 2022 10:11 PM
> > > To: ffmpeg-devel@ffmpeg.org
> > > Cc: Linjie Fu <linjie.fu@intel.com>; Wang, Fei W
> > > <fei.w.wang@intel.com>
> > > Subject: [PATCH v4 1/2] lavc/vaapi_encode: add support for
> > > maxframesize
> > >
> > > From: Linjie Fu <linjie.fu@intel.com>
> > >
> > > Add support for max frame size:
> > >     - max_frame_size (bytes) to indicate the max allowed size for frame.
> > >
> > > If the frame size exceeds the limitation, encoder will to control
> > > the frame size by adjusting QP value.
> > >     - MFS_NUM_PASSES to indicate number of passes for QP adjust.
> > >     - MFS_DELTA_QP to indicate adjust qp value per pass.
> > >
> > > To simplify the usage, default QP adjust is set to delta_qp[4] = {1, 1, 1, 1}.
> > > Use new_qp for encoder if frame size exceeds the limitation:
> > >     new_qp = base_qp + delta_qp[0] + delta_qp[1] + ...
> > >
> > > ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -f rawvideo \
> > >         -v verbose -s:v 352x288 -i ./input.yuv -vf format=nv12,hwupload \
> > >         -c:v h264_vaapi -profile:v main -g 30 -bf 3 -max_frame_size 40000 \
> > >         -vframes 100 -y ./max_frame_size.h264
> > >
> > > Max frame size was enabled since VA-API version (1, 3, 0), but query
> > > is available since (1, 5, 0). It will be passed as a parameter in
> > > picParam and should be set for each frame.
> > >
> > > Signed-off-by: Linjie Fu <linjie.fu@intel.com>
> > > Signed-off-by: Fei Wang <fei.w.wang@intel.com>
> > > ---
> > > 1. re-send the 2 legacy patch:
> > > https://patchwork.ffmpeg.org/project/ffmpeg/patch/20190715105936.486
> > > 0-1-
> > > linjie.fu@intel.com/
> > > https://patchwork.ffmpeg.org/project/ffmpeg/patch/20190715110000.506
> > > 9-1-
> > > linjie.fu@intel.com/
> > >
> > >  libavcodec/vaapi_encode.c | 67
> > > +++++++++++++++++++++++++++++++++++++++
> > >  libavcodec/vaapi_encode.h | 19 +++++++++--
> > >  2 files changed, 84 insertions(+), 2 deletions(-)
> 
> Hi,
> 
> >
> > Hi Andriy,
> >
> > Is there any way to know the details of failure for this patch? Like
> > OS, configuration, gcc version, etc. It looks good on my local Ubuntu with gcc
> 9.3, but show fails in patchwork checks:
> > https://patchwork.ffmpeg.org/project/ffmpeg/patch/20220322141119.59562
> > 7-1-fei.w.wang@intel.com/
> >
> 
> I don't think it was a real issue. I was upgrading the x86 runner at the time.

Thanks for your confirmation. 

@Haihao, could you help to review this patchset? Thanks.

Thanks
Fei
> 
> --
> Andriy
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