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14th August 2019, 23:53 | #6983 | Link | |
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Live action not so much. |
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15th August 2019, 01:23 | #6985 | Link | |
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Join Date: May 2018
Posts: 49
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Quote:
Under these circumstances Aq mode 1 is by far the most prone to distortion and though it's subjectively more detailed, I don't like it, unless the source has a lot of grain where it can be quite useful. Aq mode 2 is much less prone to distortion, but grain can look soft and it's noticeably poor in low luma. Aq mode 3 generally works well, but it's often a sub optimal usage of bits, especially if only fleeting scenes are low luma. That's usually where Hevc-aq does rather well (though Cbq and Crq need a -1 nudge down). I find it to be the most predictable and least troublesome in motion. Aq mode 4 I don't really know what to make of. With grainy animation it seems a little more detailed than Aq mode 2. Just to clarify again that the above is all for animation; I haven't looked at the metrics and I don't have much experience with live action. Looking forward to your results! I'm a long time lurker. |
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15th August 2019, 10:11 | #6986 | Link |
Pig on the wing
Join Date: Mar 2002
Location: Finland
Posts: 5,733
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1 Mbps is quite low already, it would be nice to see some results with average bitrate around 7-8 Mbps or so.
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15th August 2019, 21:47 | #6987 | Link | |
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I'm also replicating the procedure from my encoding challenge, for apples-to-apples https://forum.doom9.org/showthread.php?t=175776 |
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17th August 2019, 00:34 | #6988 | Link |
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Join Date: Jul 2010
Posts: 14
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3900x cpu usage
hello everyone. i am seeking a little bit of help with cpu usage. i have an amd ryzen 3900x overclocked to 4200mhz. it is on an msi x570 godlike mobo. so the vrm's are the best. i currently can only get between 70-80% cpu usage on the first pass. on the second pass it drops down to 60% usage. this is encoding a 4K video file that was originally encoded with x265 from my cell phone. is there a way for me to squeeze out more usage from x265's settings?
edit: on crf the encoder maxes out all the cores. also on x264 with 2pass and crf both max out the cores. Last edited by tebugg; 17th August 2019 at 01:23. |
20th August 2019, 06:30 | #6990 | Link |
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Join Date: Feb 2015
Posts: 33
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Hello guys,
Any specific commands to encode HDR10+? --transfer smpte2094 instead of --transfer smpte2084? is it enough? Does it work at all? because I couldn't find smpte2094 on x265 documentations ... Edit: Nope. x265 [error]: invalid argument: transfer = smpte2094 Is there something wrong with my build? Last edited by LazyNcoder; 20th August 2019 at 06:37. |
20th August 2019, 07:46 | #6991 | Link |
Compression mode: Lousy
Join Date: Mar 2009
Location: Hamburg, Germany
Posts: 72
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There is a command line switch to insert HDR10+ metadata but you'll need a separate tool e.g. from Samsung to process your source file for metadata creation.
https://x265.readthedocs.io/en/defau...on-dhdr10-info |
20th August 2019, 08:15 | #6992 | Link | |
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Join Date: Feb 2015
Posts: 33
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Quote:
1- What if the source we already have is HDR10+? Can we somehow extract or bypass the metadata into x265? 2- What tool from Samsung exactly? or any alternative |
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20th August 2019, 13:05 | #6993 | Link |
Compression mode: Lousy
Join Date: Mar 2009
Location: Hamburg, Germany
Posts: 72
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I guess you'd have to be a HDR10+ adopter to get access to the Samsung tools (JsonFromVideo, Hdr10PlusGenerator) or instead use a software like Colorfront Transkoder.
Last edited by kabelbrand; 20th August 2019 at 13:07. |
20th August 2019, 16:55 | #6994 | Link |
SuperVirus
Join Date: Jun 2012
Location: Antarctic Japan
Posts: 1,351
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Maybe off-topic but probably a necessary notice...
«After much consideration, we’ve decided to remove Mercurial support from Bitbucket Cloud and its API. Mercurial features and repositories will be officially removed from Bitbucket and its API on June 1, 2020.» https://bitbucket.org/blog/sunsettin...t-in-bitbucket |
21st August 2019, 04:46 | #6995 | Link | |
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Location: Canada
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21st August 2019, 08:19 | #6996 | Link |
German doom9/Gleitz SuMo
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 6,784
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@filler56789: Good to get this notice way ahead ... enough time for the x265 team to possibly move the repository to either a different hoster or a different versioning system... (I would assume rather the first, since they love funny version tags which annoy some compiler suites not expecting their syntax).
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22nd August 2019, 10:16 | #6997 | Link | |
Compression mode: Lousy
Join Date: Mar 2009
Location: Hamburg, Germany
Posts: 72
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hdr10plus_parser
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For reference I attached the raw JSON output from my test. There are some additional indexes and ids in the Samsung output but these might be optional. |
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22nd August 2019, 14:24 | #6998 | Link | |
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Join Date: Jan 2019
Location: Canada
Posts: 574
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Quote:
At the time of development (possibly now too), HDR10+ titles also have metadata inserted at every frame, and not like 1 SEI message per scene. After all, some of this is trial and error using x265 as "correct" implementation. There is still some desync between source JSON and extracted where there is a metadata change (scene change?), but it's usually just 1-2 frames that are different. |
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22nd August 2019, 18:39 | #6999 | Link | |
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Location: Portland, OR
Posts: 4,771
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Quote:
Note that dynamic metadata isn't necessarily static across a shot; if there are dramatic changes in a shot, than there likely will be mid-shot metadata. |
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22nd August 2019, 23:16 | #7000 | Link | |
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Join Date: Jan 2019
Location: Canada
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Quote:
Not sure if it would affect compatibility as well. |
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