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12th September 2018, 21:16 | #6361 | Link | |
Herr
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Quote:
I never liked that corresponding PSY-setting in x264 either, it was too strong. |
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12th September 2018, 22:43 | #6362 | Link | |
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I then checked with mediainfo and all my test videos so far were already encoded with --psy-rdoq 0. Last edited by katzenjoghurt; 12th September 2018 at 22:48. |
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12th September 2018, 22:48 | #6363 | Link | |
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I'm quite happy with Tune Grain... I use it for every movie. E.g. every Star Wars movie came out well with it so far... only Star Wars III seems like it was specifically made to make x265 look bad - pick your poison: a) no grain b) 15k+ bitrate c) wobbling faces with artefacts Last edited by katzenjoghurt; 12th September 2018 at 22:58. |
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13th September 2018, 07:51 | #6364 | Link | |
Herr
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Quote:
https://x265.readthedocs.io/en/default/presets.html That webpage says that --tune grain sets --psy-rdoq 10.0 Did you set --psy-rdoq 0 AFTER setting --tune grain? I think it overwrites the --psy-rdoq that --tune grain sets then. Last edited by Forteen88; 13th September 2018 at 07:54. |
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13th September 2018, 08:55 | #6365 | Link |
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He was most likely using a non-slow preset.
--psy-rdoq 10.0 is only set starting at --preset slow and slower. This is why --tune grain actually looks quite good on medium or fast preset. @katzenjoghurt: Simply try --preset slow --profile main10 --output-depth 10 --no-sao at a CRF between 17 and 20. Maybe that helps with bitrate and quality. |
13th September 2018, 22:56 | #6367 | Link |
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Hi guys,
just wanted to thank you for your support. Unfortunately I'm too dead tired from work to do some test encodings today. But thanks! Much appreciated. Will try out some of your proposals during the weekend and let you know what worked out. |
14th September 2018, 00:18 | #6368 | Link |
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why? i am using --no-deblock with CRF ano NO BLOCKING... depends on bitrate and with CRF, no blocking should be presented.
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14th September 2018, 07:14 | #6369 | Link | |
Herr
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Quote:
If you're setting --no-deblock on UHD-encodes, it's obviously also less of a difference compared to encodes at lower resolutions. Last edited by Forteen88; 14th September 2018 at 07:17. |
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14th September 2018, 09:11 | #6370 | Link |
Pig on the wing
Join Date: Mar 2002
Location: Finland
Posts: 5,718
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(C)TU size and detail retention
In theory, is it better to use smaller (C)TU sizes to retain detail? I've been thinking about the rdpenalty parameter - earlier I've used --ctu 32 --max-tu-size 16 --tu-inter-depth 4 --tu-intra-depth 4 --limit-tu 3, but I've wondered if --max-tu-size 32 --rdpenalty 1 would allow some more flexibility for the encoder without sacrificing detail.
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15th September 2018, 12:34 | #6371 | Link | |
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16th September 2018, 21:09 | #6373 | Link | |
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I tried a bigger test encode with crf 18 medium but looks like I'll get close to a 10mbit bitrate then. But lowering the bitrate further will kill the grain on the other hand. *sigh* At least I can confirm that the artifacts indeed seem to be caused by tune grain. As soon as I enable it artifacts start showing up at bitrates <10mbit. This movie is really weird. Looking at it my gut feeling is that it should be encodable with 5,000kbit/s. But it demands far more... more than some 60's movie with grain everywhere. Last edited by katzenjoghurt; 16th September 2018 at 23:40. |
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22nd September 2018, 13:48 | #6374 | Link |
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Location: Sweden
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x265 v2.8+70-33a782b23f2c (32 & 64-bit 8/10/12bit Multilib Windows Binaries)
Code:
https://bitbucket.org/multicoreware/x265/commits/branch/default |
24th September 2018, 13:20 | #6375 | Link |
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Is someone able to explain what --hdr-opt does please?
I've started to try a couple of hdr encodes and have always used --cbqpoffs -2 and --crqpoffs -2 in my standard x265 settings. But wondered if setting --hdr-opt together with those might cause issues as they all seem to be chroma/luma QP optimizations... Thanks. |
25th September 2018, 17:08 | #6376 | Link | |
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26th September 2018, 00:05 | #6377 | Link | |
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26th September 2018, 10:00 | #6378 | Link | ||
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26th September 2018, 10:11 | #6379 | Link |
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Join Date: Dec 2014
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May I ask which among the switches will enable faster encoding in 2 pass (default medium) with minimal or no degradation in picture quality? So far I have identified the ff:
1. --no slow first pass 2. --multi-pass-opt-analysis 3. --multi-pass-opt-distortion I might be missing couple more things?
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