[FFmpeg-devel] [PATCH] vdpau: do not use buggy HEVC support by default

wm4 nfxjfg at googlemail.com
Fri Jul 14 12:26:52 EEST 2017

On Fri, 14 Jul 2017 08:19:25 +0000
Yogender Gupta <ygupta at nvidia.com> wrote:

> Please help to understand what is broken with a command line, so that we can address this issue.

With ffmpeg CLI, you can try something like:

  ffmpeg -hwaccel vdpau -i some_8bit_hevc_file.mkv -frames 10 -pix_fmt yuv420p out.y4m

You will see quite obvious artifacts, that look like interlacing gone

GL_NV_vdpau_interop has a similar bug. You can test that with e.g.:

  mpv --hwdec=vdpau some_8bit_hevc_file.mkv

(other software which uses this extension to map VdpVideoSurface as GL
textures should be affected too.)

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