Question about the 'color sampling' options in x265 base Main 10 settings

[Lukwtwz]

Does Hybrid treat the video source as 4:2:0 (instead of proper conversion from 4:2:2 to 4:2:0) whenever Main 10 is used, regardless of the actual source chroma sampling, or does it do proper 4:2:2->4:2:0 ?

Hope this clears things up for you.

Cu Selur

Very much so. I mistakenly thought that "input" referred to the Hybrid app's source file input rather than to the input of Hybrid's encoder specifically. Although I've been generally satisfied with the Main 10 encode results I've been getting via Hybrid, there have been a few cases where the end result wasn't consistent with other encodes from the same types of sources, and I wanted to rule out Hybrid's involvement in color sampling before troubleshooting factors extraneous to Hybrid. I use Main 422 10-bit a lot as well (for Youtube, now that it accepts that format, albeit with insanely long processing times for videos longer than a few minutes), but my 2016 HDR TV only plays Main 10, so I wanted to get that profile right. Thanks for clearing that up.