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7th January 2017, 18:59 | #4582 | Link | |
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Well, whether a 2.5 fps speed drop is huge or negligible depends on what FPS you got before
Quote:
...unless you don't care about speed anyway.
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8th January 2017, 05:48 | #4584 | Link |
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Then don't use it! The quality difference is probably in effect, non-existent or at least, so minute you'd really have to be looking closely at the right point on a the right frame zoomed in enough to be able to see there. There are a lot of other settings that you can use that are more beneficial, or save bitrate that benefits ABR video (target being size) or results in a smaller file (target quality). In the latter, you can decrease the CRF (remember decimals are allowed, such as 19.8) to get the equivalent approximate file size, which naturally means the output should be better quality.
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8th January 2017, 05:51 | #4585 | Link | |
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Posts: 240
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Quote:
Code:
--crf 20 --output-depth 10 --preset slow --rd 6 --tu-intra-depth 4 --tu-inter-depth 4 --amp --cbqpoffs -3 --qpstep 8 --bframes 8 --rc-lookahead 60 --min-keyint 23 --keyint 240 --no-open-gop --colorprim bt709 --colormatrix bt709 --transfer bt709 --deblock -3:-3 --psy-rdoq 10 --no-sao --crqpoffs -3 --high-tier --qg-size 8 --aq-motion |
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8th January 2017, 17:57 | #4586 | Link |
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Posts: 2,229
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I am currently using
Code:
--crf 20 --output-depth 10 --rd 4 --tu-intra-depth 4 --tu-inter-depth 4 --rdoq-level 2 --amp --early-skip --fast-intra --b-intra --limit-modes --aq-mode 2 --ipratio 1.38 --pbratio 1.28 --me star --max-merge 4 --weightb --analyze-src-pics --bframes 6 --rc-lookahead 45 --ref 6 --psy-rdoq 1.28 --no-sao --qg-size 8 --limit-tu 3 --ssim-rd The thing is to find the right balance of encode speed and quality for your needs, and also choose settings that 'make sense'. I should point out that you have set --psy-rdoq to 10, which IMO is very high, but it doesn't matter anyway since it isn't effective without --rdoq-level. The settings I chose work well for me and to my liking, and performs really well. |
8th January 2017, 20:23 | #4587 | Link | |
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Posts: 240
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Quote:
will try --rd-refine speed loss. edit: tried --rd-refine is cool... no such speed loss, but about 400kbps bitrate drop...from 3430 to 3003kbps...and the picture is better i thinks. @burfadel: tried your settings...my preset is much better quality and detail retention....GTX 1060 can do HEVC 10bit encode at that quality with MediaCoder HQ preset with speed about 130fps. Last edited by jlpsvk; 9th January 2017 at 23:16. |
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10th January 2017, 06:33 | #4588 | Link |
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Join Date: Dec 2014
Posts: 666
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Guys,
I'm getting this warning: x265 [warning]: Cannot use Analysis load/save option and multi-pass-opt-analysis/multi-pass-opt-distortion together,Disabling Analysis load/save and multi-pass-opt-analysis/multi-pass-opt-distortion I only have " multi-pass-opt-analysis" activated the other one is off HEVC encoder version 2.2+22-20217c8af8ac
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10th January 2017, 07:47 | #4589 | Link |
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The meaning is: You can't use either multi-pass-opt* option together with analysis load or save. If you want to load and save the analysis data, you can't optimize it at the same time.
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10th January 2017, 14:04 | #4591 | Link | |
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Quote:
Ad mode = 3 retains very good black level. Encodes a little bit longer though Sent from my iPhone using Tapatalk
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10th January 2017, 14:12 | #4592 | Link |
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Location: Sweden
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If u do 8-bit encodes so do i recommend you to always use --aq-mode 3 otherwise do is 2 enough. For more info, check the x265 documentation.
Sent from my Samsung Galaxy S7 edge via Tapatalk
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10th January 2017, 14:24 | #4593 | Link | |
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Posts: 666
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Quote:
The doc says: "This is recommended for 8-bit encodes or low-bitrate 10-bit encodes, to prevent color banding/blocking." May I ask how do we define low bit rate? I do anywhere between 1500 to 4000. Do these values fall on low bit rate definition? Sent from my iPhone using Tapatalk
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10th January 2017, 21:57 | #4596 | Link | |
ffx264/ffhevc author
Join Date: May 2007
Location: /dev/video0
Posts: 1,844
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Quote:
if you have grainy source, migh give the grain tuning a try. Apparently it produces very good results (haven't tried it myself but I've seen claims of that) |
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10th January 2017, 23:48 | #4597 | Link | |
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Join Date: Dec 2014
Posts: 240
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Quote:
Code:
--crf 20 --output-depth 10 --preset slow --rd 6 --tu-intra-depth 4 --tu-inter-depth 4 --amp --qpstep 8 --bframes 8 --rc-lookahead 60 --min-keyint 24 --keyint 240 --no-open-gop --colorprim bt709 --colormatrix bt709 --transfer bt709 --deblock -3:-3 --psy-rdoq 10 --no-sao --high-tier --qg-size 8 --aq-motion --rd-refine --ssim-rd --aq-mode 3 |
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11th January 2017, 00:28 | #4598 | Link | |
ffx264/ffhevc author
Join Date: May 2007
Location: /dev/video0
Posts: 1,844
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