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4th June 2020, 22:07 | #1 | Link |
Registered User
Join Date: Apr 2010
Posts: 57
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Best quality settings for x264 to x265
Hi guys,
I know this has been asked too much already, but here it goes: x264 video to x265. Just preset slow, crf 18, no sao, deblock -3:-3, no strong intra, vbv 160000, chromaloc 0, no-hdr10, cll 0,0, no-hdr-opt, no-hdr10-opt Source: Bluray rip by MakeMKV Last edited by crystalfunky; 4th June 2020 at 22:50. |
5th June 2020, 10:09 | #2 | Link |
Herr
Join Date: Apr 2009
Location: North Europe
Posts: 556
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If you got a strong CPU, set --preset slower.
"vbv 160000, chromaloc 0, no-hdr10, cll 0,0, no-hdr-opt, no-hdr10-opt", isn't that only for HDR-video? UPDATE: Never mind my comment about HDR. I'm real newbie at UHD/HDR Last edited by Forteen88; 5th June 2020 at 15:25. Reason: HDR... |
5th June 2020, 12:06 | #3 | Link |
Registered User
Join Date: Apr 2010
Posts: 57
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I have a Ryzen 3700x thats why I choose slow instead of slower.
Those settings are indeed for HDR, thats why I disabled them, because I have a x264 video. Or did you mean something else? Last edited by crystalfunky; 7th June 2020 at 09:03. |
5th June 2020, 12:09 | #4 | Link | |
Lost my old account :(
Join Date: Jul 2017
Posts: 325
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Quote:
Did some tests in a previous thread, and it seems very beneficial to keep it on: https://ibb.co/PmRXGF6 "chromaloc 0, no-hdr10, cll 0,0, no-hdr-opt, no-hdr10-opt" These are not enabled by default, so you dont need to (un)set those. For SDR bluray, just set --colorprim bt709 --transfer bt709 --colormatrix bt709 --range limited if you wanna be on the safe side (if those matches your source ofc). Last edited by excellentswordfight; 5th June 2020 at 12:12. |
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6th June 2020, 07:55 | #5 | Link |
Registered User
Join Date: Apr 2010
Posts: 57
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Interesting, i turned it on again, thanks.
Regardless of that I get quite low bitrates for x264 to x265 encodings. Around 6500 for the Lord of the Rings Bluray with my settings above (crf 18). Does it even make sense to increase crf even more or should I see the encodings with these low bitrates as good/sufficient? |
6th June 2020, 13:53 | #6 | Link |
ffx264/ffhevc author
Join Date: May 2007
Location: /dev/video0
Posts: 1,844
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My recommendations are
crf 21 qcomp 0.7 no-strong-intra-smoothing no-sao deblock -3,-3 psy-rd 3.3 psy-rdoq 16 If you have HW support for it, use 10 bits x265. It will someowhat reduce banding The above settings really shine if you have dark scenes with some noise (inc. mosquito noise) |
11th June 2020, 11:10 | #9 | Link | ||
Herr
Join Date: Apr 2009
Location: North Europe
Posts: 556
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Quote:
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11th June 2020, 11:26 | #10 | Link |
Pig on the wing
Join Date: Mar 2002
Location: Finland
Posts: 5,733
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In CRF mode without any VBV settings, the bitrate will just shoot through the roof as there's almost nothing limiting it. The artifacts appear if the rate control starts limiting the bitrate availability.
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