Visual artifacts when encoding at 8K (right side of video)
Experimenting with HEVC HDR 10 bits on a 8K resolution file and measuring objective quality with Netflix VMAF tool, it became apparent that the right side of the encoded video ended "corrupted". The same video encoded with VP9 does not exhibit this issue FFMPEG and libx265 were compiled from the latest snapshot: ffmpeg version N-90933-g177133a libavutil 56. 18.100 / 56. 18.100 libavcodec 58. 19.100 / 58. 19.100 libavformat 58. 13.100 / 58. 13.100 libavdevice 58. 4.100 / 58. 4.100 libavfilter 7. 21.100 / 7. 21.100 libswscale 5. 2.100 / 5. 2.100 libswresample 3. 2.100 / 3. 2.100 libpostproc 55. 2.100 / 55. 2.100 HEVC encoder version 2.7+337-d953f508ed0d
command line used ffmpeg -an -i 8K_PRORES_10bit_422.mov -vcodec libx265 -b:v 10000k -pix_fmt yuv420p10le -x265-params pass=1 8K_H265.mp4 ffmpeg -an -i 8K_PRORES_10bit_422.mov -vcodec libx265 -b:v 10000k -pix_fmt yuv420p10le -x265-params pass=2 8K_H265.mp4
Video file native resolution is 8192x4320
I'm attaching a snapshot from two encodings from the same original file, one VP9 which is fine and on HEVC with artifacts on the right side
