Doom9's Forum - View Single Post - A better compromise between medium and slow preset

Boulder · 29th July 2021, 12:35

Which areas of the frame should be affected by --selective-sao 2 compared to --selective-sao 0? I just did a quick test regarding filesize and at the same CRF, the filesize for 0 was 2651 kbps / avg QP 18.23 while for 2 they were 2926.94 / 17.86 and based on the stats, the QPs for P-frames were substantially lower. I-frames pretty much the same for both versions.

EDIT: it's also odd that --selective-sao 2 is faster even though it produces a bigger file and should require more computation than no SAO at all.

29th July 2021, 12:35	#55 \| Link
Boulder Pig on the wing Join Date: Mar 2002 Location: Finland Posts: 5,733	Which areas of the frame should be affected by --selective-sao 2 compared to --selective-sao 0? I just did a quick test regarding filesize and at the same CRF, the filesize for 0 was 2651 kbps / avg QP 18.23 while for 2 they were 2926.94 / 17.86 and based on the stats, the QPs for P-frames were substantially lower. I-frames pretty much the same for both versions. EDIT: it's also odd that --selective-sao 2 is faster even though it produces a bigger file and should require more computation than no SAO at all. __________________ And if the band you're in starts playing different tunes I'll see you on the dark side of the Moon... Last edited by Boulder; 29th July 2021 at 13:21.