4k hdr space savings, newbie help please

[lazyjss]

I have been using handbrake with great success on 1080 bluray remux movies and would like to shrink my 4k hdr movies if possible while retaining the colorspace and hdr.


I have tried a few test encodes using x265 10bit and it seems to retain the colorspace.

Which encoding algos retain the colorspace and hdr?
I n my research on reddit it seems that handbrake has a 8bit pipeline and is unable to do this?
So thought i would come here and see what the truth.

I am using windows 10 with the latest nightly at this time but also plan to switch to docker if possible.

Would anyone be kind enough to share any settings or a starting point with 4k uhd hdr movies?

Thank you for any help

[mduell]

HB won't retain HDR.

[Ritsuka]

Nightly builds can use a 10bit pipeline if no 8-bit only filter is enabled. Plus, if your HDR movie has got only static metadata, you can get them with mediainfo and manually add them to x265 "additional options" (something like hdr-opt=1:repeat-headers=1:master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(20,10000000):max-cll=0,0 with the value you get from mediainfo).

HDR10+ and Dolby Vision are totally unsupported.

Many HDR10 and HLG movies can look good enough even without the mastering metadata anyway.

[lazyjss]

The hdr logo lights up on my tcl tv when playing one of my encodes using the handbrake nightly with both 265 10 bit and 265 nvenc nvidia.

Have done some quality comparison and I can not tell a difference in quality, colors, or anything else using a quality setting of 18.

[rollin_eng]

Just because your TV says it’s HDR doesn’t mean it actually is.

That’s not to say it isn’t.

[mduell]

Which really tells you how much meaning HDR has.

[lazyjss]

Not sure if it is or is not hdr, as I can not tell a difference I am going to encode some of my 4k less watched media with handbrake, i figure if a cheap tcl roku tv can play it back I should have no trouble down the road when I upgrade my panel.
I have a turing nvidia gpu and have tried the hardware encoding as well and it also retains the colorspace and with no il effects that I see.

[mduell]

It's not HDR when it comes out of HB.

[Deleted User 11865]

It's not HDR when it comes out of HB.

Except in the very small subset of cases mentioned by ritsuka above, if and when you are using a nightly build