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Old 26th November 2020, 12:22   #1  |  Link
Satoshi18
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HEVC settings

Hello, I previously used following settings for hi10p, ref=16:subme=11:rellis=2
what HEVC settings do I need to configure to get a good encode(in handbrake)?
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Old 26th November 2020, 14:10   #2  |  Link
microchip8
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You're using too many reference frames. 16 is way too much, even for anime encodings. Good values for feature films/film series is between 4 and 6. Anything higher is not beneficial and can actually degrade quality for live action content. For anime, you can up it by 2 more

As for comparable settings for x265, that'll be ref=6:subme=5:rd=6. However, there are other things to tweak like psy-rd and psy-rdoq. I like using high values for these options (psy-rd=4 and psy-rdoq=16). A qcomp of 0.7 is also nice. Also, using aq mode 1 seems to give most of the time the best subjective quality. The other aq modes are too unpredictable and some just waste bits for no apparent image improvement
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Last edited by microchip8; 26th November 2020 at 14:19.
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Old 26th November 2020, 15:05   #3  |  Link
Satoshi18
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oh ok, thanks for the info
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Old 28th November 2020, 16:51   #4  |  Link
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You should do a test-encode first (I prefer lower psy-rdoq), write this in your Avisynth+ script to only encode the first 1000 frames:
Trim (0,1000)

BTW, I tried setting a higher --ref than 6 in x265, but x265 showed error and exited.
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Old 1st December 2020, 13:04   #5  |  Link
Satoshi18
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Quote:
Originally Posted by microchip8 View Post
You're using too many reference frames. 16 is way too much, even for anime encodings. Good values for feature films/film series is between 4 and 6. Anything higher is not beneficial and can actually degrade quality for live action content. For anime, you can up it by 2 more

As for comparable settings for x265, that'll be ref=6:subme=5:rd=6. However, there are other things to tweak like psy-rd and psy-rdoq. I like using high values for these options (psy-rd=4 and psy-rdoq=16). A qcomp of 0.7 is also nice. Also, using aq mode 1 seems to give most of the time the best subjective quality. The other aq modes are too unpredictable and some just waste bits for no apparent image improvement
But I had thought for anime, more reference frames, more quality, better compression etc?
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Old 1st December 2020, 15:44   #6  |  Link
microchip8
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Quote:
Originally Posted by Satoshi18 View Post
But I had thought for anime, more reference frames, more quality, better compression etc?
It's placebo. Above 10 ref frames you won't notice a difference in anime encoding
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Old 4th December 2020, 12:59   #7  |  Link
larisk2
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1)There is a lot of information on the web that the H. 264 or H. 265 format can be opened by programs for Windows.
I had to spend a lot of time to download and install all this software. As a result, no application was able to play the video in part 264. How can I open the H264 file from a surveillance camera?
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Old 4th December 2020, 14:15   #8  |  Link
Emulgator
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Surveillance camera makers often have proprietary codec implementations.
You have to install their codec on your system.
Throw the offending file on mediainfo, note down the fourcc.
(Geovision MPEG-4 AVC coming into my mind, I had to do the same, going to their website, download and install their codec).
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Last edited by Emulgator; 4th December 2020 at 14:17.
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