Premiere uses "analog" flagging with 704 active lines and 10/11 PAR. There is no way to change it.
Resolve flagging is messed up (unless fixed).
Even if you use 486 then you should not change PARs as those 6 lines should be "forgotten".
As far as I know there were never introduced separate PARs for 486 lines in any specs.
Your value of 9/10 is made up and doesn't really exist.
I would even in your case not bother saving those 6 lines at all (just use 480).
Good explanation:
https://forum.videohelp.com/threads/381 ... ost2476587If you archiving this footage for future use then not sure why are you trying hard to preserve some ancient analog formats, which don’t translate 1:1 to digital world well. The further you go in time the more those formats will become meaningless. You should optimise those archives for future digital use. No one in 20 years going to try to use them in eg. D1 machine
You could even go further and convert them to square pixels or even deinterlace to double fps (but you need good tool for it).
Regardless what you do, there is no need to do any ffmpeg re-export. Just use MOV header tool from Alex and change desired MOV header values instantly (TC, reel name, color space tags etc.).
Premiere supports up to 32 channels of multichannel audio- as interleaved single track or 32x mono tracks.
Why you say it doesn't support multichannel audio?