x264.exe --demuxer avs --bitrate 8000 --preset placebo --tune film --weightp 1 --nal-hrd vbr --vbv-maxrate 15000 --vbv-bufsize 15000 --level 4.1 --keyint 25 --b-pyramid strict --slices 4 --aud --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --sar 1:1 -o X:\720p_8-15MBit_1pass.mp4 Z:\1080i-720p.25p.avs
So, I had another try over the night (see settings). Although placebo seem to make less problems in QuickTime its still not perfekt, and 1/2 pass is also not responsible, nor is ABR or --crf. In 30 minutes footage there are around 10 sudden grey destroyed images. Always partly, there are no full frames missing, but one see 2-3 frames with differet distortion in a row. Same footage (horribly) encoded by AME with profile High, Level 4.1 does not make problems in Quicktime.
Since the rendering takes so long and short pieces are no proof, that it will work in total footage, I have to overthink before next try. I will let out
--b-pyramid strict --slices 4 --aud
in my next try, since this is not intended for Blu-ray. Any more hints about this?
Thanks a lot!
BTW - its x264 core:112 r1867 22bfd31