mr44er

> Nevertheless, some -r value is definitely needed to set a relative framerate between ref and main files, otherwise vmaf scores break sometimes. I can confirm this, it also helps...

I have an exactly fitting case here. https://www.ardmediathek.de/video/babylon-berlin/folge-1-oder-staffel-1-s01-e01/das-erste/Y3JpZDovL2Rhc2Vyc3RlLmRlL2JhYnlsb24tYmVybGluLzYwMzk5MTBlLTBhZDAtNDg1Ni04OWRkLWQxODdjZmZiNmMxYw They have a region block, non-German IPs from abroad are rejected by their server. Maybe you are lucky and if not here...

Some experienced numbers to compare (note that VMAF95 with ab-av1 means average over the entire runtime) : 120 minutes, clean and grainless, 2160p, black bars cropped (and no other filters...

> Problem: My input video has a FPS of 30. No, ffmpeg shows 30.23 fps and that is an indicator that it was encoded with variable framerate. That is ok...

If you have crashes/oom it helps a lot if you throw some swap space in.

Not an exact answer, but maybe this as workaround: `ffmpeg -i sourcefile.mkv -map_metadata -1 -map_chapters -1 -bsf:v filter_units=remove_types=6 -vcodec copy -an -sn -dn outvideoonly.mkv` It strips out metadata, chapters, closed...

> Out of interest I asked an engineer in WDC if I could change the IBM firmware to standard HGST firmware and I was told NO! So I suspect there...

I would suggest this as default, it is imho in every case useful as -pix_fmt yuv420p10le (which I saw is already default) Got this from here: https://gist.github.com/BlueSwordM/86dfcb6ab38a93a524472a0cbe4c4100 Just a recommendation,...

Modern codecs (with enough bitrate) are so mature, that I can't really tell the difference anymore, BUT: It may look stupid to convert mostly 8bit material to 10bit (yuv420p10le-example). The...

I also don't fiddle with every single knob (before checking out VMAF my sweet spot was just -crf 28 -preset 5/slower for everything on av1 and hevc), but I stumbled...