H264 decoder problem

Question

Hello,

since our switch to win10 last year I am encountering many decoding issues under win10 which can be overcome by using D3D9 or openGL in chrome or deactivating hardware acc on decode.

https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/30341030-8fd4-4535-971e-31f1ff487cdf/h264-decoder-problem-artifacts-on-decoded-image?
forum=mediafoundationdevelopment

This is pretty much what we have too.
The movies are encoded with ffmpeg using crf.
I try to post a sample that is short and clearly reproduces the issue, I cannot post one of the production samples obviously.
Under win7 we never had these issues, ffplay under win10 also does decode fine...

Question 1
How can I vote up the issue posted above ? As this is coming from the archived site there is no reply possible etc ?

Question 2
is anybody else having issues with decoding x264 encoded vids with 4k and crf encoding ?

All the best
Johannes

Answer 1

https://www.reddit.com/r/handbrake/comments/9o7fh9/x264_auto_encoder_level_producing_artifacts_on/e7sa812/

This is the same issue.
setting the level from 6.0 to 5.x does solve the problem
d3d11 seems to fail to decode level 6.0 properly