x265 HEVC Encoder

[jpsdr]

I personnaly will not bother to copy release notes when they can be checked on the github, just see the text of the commits.

[megapro17]

Originally Posted by excellentswordfight

If 12400 is faster, it does indeed sound like it could be a issue with the scheduler, what windows version are you using?

I'm using Windows 11 with all updates 22621. You was right, apparently, windows restricts background application to only efficency cores! When I pin window at top, my CPU is loaded at 100% all times. This is incredibly stupid, I couldn't even assume that! Problem is known for more than a year and still not fixed. all we had to do is buy the damn 7900x.
Thanks for poiniting for the most dumb problem ever. And none of the solutions are not working, only keeping window at top. Intel thread director, more like intel garbage director

https://www.reddit.com/r/XMG_gg/comm...o_ecores_when/
https://www.reddit.com/r/intel/comme...cy_cores_only/

[Atak_Snajpera]

Have you tried changing power plan from balanced to high performance?

[benwaggoner]

Originally Posted by madey83

Thanks for that, but every new release is publish I struggle to find release notes.

Could please attach into GitHub release or here?

MCW only provides release notes for official releases, the most recent being 3.5.

I just read the commits for the current branch.

[megapro17]

Originally Posted by Atak_Snajpera

Have you tried changing power plan from balanced to high performance?

yeah i even tried Ultimate Performance plan, it doesn't change anything

[benwaggoner]

Originally Posted by megapro17

yeah i even tried Ultimate Performance plan, it doesn't change anything

Are the different core types flagged as different NUMA nodes? If so, --pools could be used to pin specifically to the performance cores. I think that may work on AMD, as the big processors have a lot of nodes. Not Intel AFAIK.

[Atak_Snajpera]

Originally Posted by benwaggoner

Are the different core types flagged as different NUMA nodes? If so, --pools could be used to pin specifically to the performance cores. I think that may work on AMD, as the big processors have a lot of nodes. Not Intel AFAIK.

Only on Windows 7 P-Cores and E-Cores are separated by different NUMA nodes. Basically win7 treats that cpu as "dual-socket". On Win10/11 all cores sit on the same NUMA node.

[TDS]

I am trying to get x265 to process a DV clip, and retain the appropriate metadata, or whatever it is.

If I encode a DV clip with "standard" commands I get this output, I've just found out that this is a "Hybrid" and it plays as HDR10:-

This is MediaInfo info.

Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible

But I downloaded an LG DV test clip, and it's x265 info is, and it plays as DV :-

Dolby Vision, Version 1.0, dvhe.04.06, BL+EL+RPU

How do I remove the

HDR10 compatible / SMPTE ST 2086, HDR10 compatible

??

[rwill]

This is not a Hybrid, this is a Profile 8 Dolby Vision which is HDR10 backwards compatible.

If you want to drop HDR10 compatibility you can try to not insert the mastering display SEI and content light level SEI, then just set the the VUI video information of primaries, transfer and matrix to unknown. This way a playback device will not know how to display the Baselayer correctly at all.

I have my doubts that the resulting DV file will be correct and be conforming to any valid DV Profile though.

[TDS]

Originally Posted by rwill

This is not a Hybrid, this is a Profile 8 Dolby Vision which is HDR10 backwards compatible.

If you want to drop HDR10 compatibility you can try to not insert the mastering display SEI and content light level SEI, then just set the the VUI video information of primaries, transfer and matrix to unknown. This way a playback device will not know how to display the Baselayer correctly at all.

I have my doubts that the resulting DV file will be correct and be conforming to any valid DV Profile though.

Thanks for the info, but that's about as clear as thick mud, to me

[rwill]

Originally Posted by TDS

Thanks for the info, but that's about as clear as thick mud, to me

Well then, what is your x265 command line for encoding?

[TDS]

Originally Posted by rwill

Well then, what is your x265 command line for encoding?

I think it would be easier for me to just send you over to have a look at what I've been posting on the RipBot thread with quite a few of the command lines that I've been trying...

https://forum.doom9.org/showthread.p...45#post1987445

[rwill]

Hmm, what about "--no-hdr10 --videoformat unknown --range limited --colorprim unknown --transfer unknown --colormatrix unknown" and removing "--master-display" and "--max-cll" ?

[TDS]

Originally Posted by rwill

Hmm, what about "--no-hdr10 --videoformat unknown --range limited --colorprim unknown --transfer unknown --colormatrix unknown" and removing "--master-display" and "--max-cll" ?

So from what I understand, what you're saying here is I need to add that to the command line and remove those others ?

OK, I have just checked what these commands to @ x265 read the docs, so I will very interested in seeing what it does, but it won't be until tomorrow now (my time).

I will report back later

UPDATE:-

Hi, I tried all those commands, and it still doesn't do what I think it should.

How do I remove the "--master-display" and "--max-cll" (this is info from the clip I'm testing with)

--master-display "G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1)" --max-cll "738,287"

[rwill]

Originally Posted by TDS

So from what I understand, what you're saying here is I need to add that to the command line and remove those others ?

Yes.

You also might want to pass off your DV RPU as "--dolby-vision-profile 5" to x265 instead of 8.1, as Profile 8.1 is by definition HDR10 backwards compatible. Profile 5 is not.

[tuanden0]

I have 8 cores CPU (Ryzen 7 5800X) but when I encode, it never used full 100% CPU. So I tried to run 2 x265 instances at same time, but I am confuse how to use this options: --pools <string>, --numa-pools <string>

Can someone enlighten me.

Should I use --pools "+" or something.

Thanks

[Selur]

https://x265.readthedocs.io/en/maste...l?thread-pools
https://x265.readthedocs.io/en/maste...mdoption-pools

Instead of messing with pools, try using "--pmode --pme" at least with HD and higher resolution content that helps here,...

[rwill]

Originally Posted by tuanden0

I have 8 cores CPU (Ryzen 7 5800X) but when I encode, it never used full 100% CPU. So I tried to run 2 x265 instances at same time, but I am confuse how to use this options: --pools <string>, --numa-pools <string>

Can someone enlighten me.

Should I use --pools "+" or something.

Thanks

Well just don't use --pools or --numa-pools. Just start your two instances and let the Operating System scheduler figure out how to distribute the threads.

And don't use --pmode or --pme, they will increase CPU usage more than they will speed up things.

[tuanden0]

Originally Posted by Selur

https://x265.readthedocs.io/en/maste...l?thread-pools
https://x265.readthedocs.io/en/maste...mdoption-pools

Instead of messing with pools, try using "--pmode --pme" at least with HD and higher resolution content that helps here,...

Originally Posted by rwill

Well just don't use --pools or --numa-pools. Just start your two instances and let the Operating System scheduler figure out how to distribute the threads.

And don't use --pmode or --pme, they will increase CPU usage more than they will speed up things.

Thank you for help

I will not use --pools and let the OS do it.

[benwaggoner]

Originally Posted by Selur

https://x265.readthedocs.io/en/maste...l?thread-pools
https://x265.readthedocs.io/en/maste...mdoption-pools

Instead of messing with pools, try using "--pmode --pme" at least with HD and higher resolution content that helps here,...

--pmode could well help, but unless it <480p, --pme would most likely slow things down.