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16th October 2022, 22:02 | #21 | Link |
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--tskip-fast doesn't do anything if --tskip isn't on. If --tskip is on, it will do a slower, more thorough job without --tskip-fast than if it is on. For most content, --tskip is only occassionally helpful, and --tskip-fast catches most of those cases. --tskip by itself has a pretty big perf hit, So I recommend trying it with --tskip-fast first, and seeing if there is any benefit. If there is benefit, try without --tskip fast and see if there is additional benefit worth the slower encoding speed.
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18th October 2022, 19:46 | #24 | Link | |
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--rc-lookahead is really a secret weapon for improving quality and reducing quality fluctuations with single-pass encoding. |
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19th October 2022, 18:52 | #25 | Link |
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Seeing the speed of a big real encode i've started, I think my true drop is 0,50 average to 0,42 average. It's allmost 20%... I'll check with --tskip-fast... If it catches allmost all the cases for a speed drop less significant, it will be enough for me. rc-lookahead is set to 48.
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21st October 2022, 11:16 | #26 | Link |
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Yeah, tskip is too impactful on performance with my current step, not the end of the world for me, I'm pretty happy with my current detail settings. I would use rect, amp, hme and tskip if I could, But a full movie is 2 days with my settings, and 20+ days with just adding these 4 settings, so that shows you how much impact they have, and how unoptimized my pc is for encoding, LOL.
Because SolLevante is only around 4 thousand frames, I encoded that using the highest settings possible, placebo and hme / tskip and the quality is shockingly good. Took me 2 days, but I wanted to see it and it doesn't disappoint. Unless there's anymore settings that Ben is keeping secret from us, I think its about as good as it gets. haha... Last edited by HD MOVIE SOURCE; 21st October 2022 at 11:19. |
22nd October 2022, 00:35 | #27 | Link |
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Wow, those four commands should NOT cause encoding time to go up 10x! I haven't seen --hme really prove its value yet. Have you?
You can get --amp and --rect with much less of a hit using --limit-refs 2 or 3 And of course, add --tskip-fast with tskip |
24th October 2022, 02:15 | #29 | Link | |
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I've not tried this new implementation yet myself. |
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24th October 2022, 16:35 | #30 | Link |
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@benwagonner
Sorry to bother you again... First, thank for explanation, i read the code of the commit, and from the few i understood, it adjusts, for each frame, according the content, the aq-mode. It seems indeed interesting. Also, if i understood properly, you just need to put --sbrc, no aq-mode is needed anymore. --hevc-aq and aq-mode are exclusive. Do you happend to know (by any chance), if there is one "better" than the other ? Or is it just 2 differents ways, but with no one realy better than anoter ? Don't tested yet --hevc-aq with sbrc, but from the few i understood, they should be also exclusive but see nothing about it in the commited code...
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24th October 2022, 21:23 | #31 | Link | ||
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28th October 2022, 20:15 | #38 | Link | |
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--aq-mode 2 does better for hdr still, at least in my target scenarios. |
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