On Mon, 2024-04-15 at 23:07 +0100, Mark Thompson wrote:
> On 15/04/2024 02:21, Xiang, Haihao wrote:
> > On Ma, 2024-03-18 at 12:21 +0800,
> > fei.w.wang-at-intel....@ffmpeg.org wrote:
> > > From: Fei Wang <fei.w.w...@intel.com>
> > >
> > > There is no Main8/10 profile defined in HEVC REXT profiles. Use
> > > Main12
> > > which is compatible with 8/10bit.
> > >
> > > Signed-off-by: Fei Wang <fei.w.w...@intel.com>
> > > ---
> > > libavcodec/vaapi_encode_h265.c | 4 ++--
> > > 1 file changed, 2 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/libavcodec/vaapi_encode_h265.c
> > > b/libavcodec/vaapi_encode_h265.c
> > > index c4aabbf5ed..43755e2188 100644
> > > --- a/libavcodec/vaapi_encode_h265.c
> > > +++ b/libavcodec/vaapi_encode_h265.c
> > > @@ -1305,12 +1305,12 @@ static av_cold int
> > > vaapi_encode_h265_configure(AVCodecContext *avctx)
> > >
> > > static const VAAPIEncodeProfile vaapi_encode_h265_profiles[] = {
> > > { AV_PROFILE_HEVC_MAIN, 8, 3, 1, 1,
> > > VAProfileHEVCMain },
> > > - { AV_PROFILE_HEVC_REXT, 8, 3, 1, 1,
> > > VAProfileHEVCMain },
> > > #if VA_CHECK_VERSION(0, 37, 0)
> > > { AV_PROFILE_HEVC_MAIN_10, 10, 3, 1, 1,
> > > VAProfileHEVCMain10 },
> > > - { AV_PROFILE_HEVC_REXT, 10, 3, 1, 1,
> > > VAProfileHEVCMain10 },
> > > #endif
> > > #if VA_CHECK_VERSION(1, 2, 0)
> > > + { AV_PROFILE_HEVC_REXT, 8, 3, 1, 1, VAProfileHEVCMain12
> > > },
> > > + { AV_PROFILE_HEVC_REXT, 10, 3, 1, 1, VAProfileHEVCMain12
> > > },
> > > { AV_PROFILE_HEVC_REXT, 12, 3, 1, 1, VAProfileHEVCMain12
> > > },
> > > { AV_PROFILE_HEVC_REXT, 8, 3, 1, 0,
> > > VAProfileHEVCMain422_10 },
> > > { AV_PROFILE_HEVC_REXT, 10, 3, 1, 0,
> > > VAProfileHEVCMain422_10 },
> >
> > Patchset LGTM, I'll push it if there are no comments.
>
> Why is this change helpful?
Together with 2/2 fix on the hw support VAAPI main12 decode and encode:
$ ffmpeg -hwaccel vaapi -f lavfi -i testsrc -vf 'format=nv12,hwupload'
-c:v hevc_vaapi -profile:v rext -vframes 30 -y out.mp4
$ ffmpeg -hwaccel vaapi -i out.mp4 -f null -
...
[hevc @ 0x55b4fda0a780] HEVC profile is not found.
[hevc @ 0x55b4fda0a780] No support for codec hevc profile 4.
[hevc @ 0x55b4fda0a780] Failed setup for format vaapi: hwaccel
initialisation returned error.
Same for p010le as input of encoder.
Thanks
Fei
>
> We don't use the rext features allowed in these cases (unlike in the
> decoder where we have to support them), so Main / Main 10 encoders
> will be able to produce a compatible stream without pointlessly
> requiring Main 12 support which many devices do not have.
>
> Thanks,
>
> - Mark
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