[FFmpeg-user] Stereoscopic hwaccel

JackDesBwa jackdesbwa at desbwa.org
Thu Oct 3 10:56:25 EEST 2019

2019-10-03 01:23, Mark Thompson :
> On 17/09/2019 17:33, JackDesBwa wrote:
> > Hi,
> >
> > I do stereoscopic (3d) photography for a few years and I just start to
> > experiment on stereoscopic videos.
> > The filter_complex argument of ffmpeg allows me to do the editing I have in
> > mind more precisely and less painfully than I was able to do with regular
> > non-linear editors before.
> > Now that the basic editing tools seem to be right for my video projects, I
> > want to accelerate rendering with hardware, and here starts my question.
> >
> > *How to have frame-packing information in h264 streams when generated with
> > hardware acceleration?*
> >
> > ...
> > Accelerating with vaapi:
> > ffmpeg -vaapi_device /dev/dri/renderD128 -hwaccel vaapi
> > -hwaccel_output_format vaapi -i aligned/l_01.mp4 -i aligned/r_01.mp4
> > -filter_complex '[0][1]framepack=sbs,format=nv12|vaapi,hwupload' -c:v
> > h264_vaapi -qp 22 -profile:v high out_vaapi.mp4
> Try this with <https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2019-October/250966.html>.

Wow, thanks to have worked on it.
Sure I can try the patch to confirm it works, but you might have to help me.

1. This patch seems to be in a series. Should I apply the whole series
or only this patch would suffice?
2. On which base should I apply it/them? Only master seems to be
recent, but it does not have your patches yet.
3. In this patch, you do not use av_frame_get_side_data(frame,
AV_FRAME_DATA_STEREO3D) as in libx264.c codec, but I see you added a
frame_packing. Does it mean I have to add an option in the command


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