Dolby Vision and HDR10+ in one video

[Atlantis]

I have seen video info where it is both Dolby Vision and HDR10+ in one video track! Is that even possible? One encode, one track that is compatible with both formats?!

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5@Main
HDR format : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2094 App 4, Version 1, HDR10+ Profile B compatible

[microchip8]

Yes, it's possible.

[Atlantis]

How? Playing DV on PC shows purple image but not this. How is it possible? It's one video track? Don't they have different color information?
Is there any threads discussing this?

[guest]

How? Playing DV on PC shows purple image but not this. How is it possible? It's one video track? Don't they have different color information?
Is there any threads discussing this?

What rock have you been living under ??

[Atlantis]

What rock have you been living under ??


Under the rock of real life which seems you don't have apparently.

[guest]

Under the rock of real life which seems you don't have apparently.

Real life doesn't exist under a rock... https://www.cosgan.de/images/midi/frech/h047.gif

Not really the response I was expecting..so afaic, you can figure it out for yourself.. https://www.cosgan.de/images/smilie/frech/s073.gif

[microchip8]

How? Playing DV on PC shows purple image but not this. How is it possible? It's one video track? Don't they have different color information?
Is there any threads discussing this?

It's called "dual layer" profile. Keep in mind that high dynamic range is mostly made up of metadata so it's not that difficult to combine different HDR standards together.

F.ex, if you play a DV file on a TV that only supports HDR10 but not DV, you'll only get the HDR10 part as it is a fallback of DV.

[guest]

It's called "dual layer" profile. Keep in mind that high dynamic range is mostly made up of metadata so it's not that difficult to combine different HDR standards together.

F.ex, if you play a DV file on a TV that only supports HDR10 but not DV, you'll only get the HDR10 part as it is a fallback of DV.

I think it's more commonly called "Hybrid".

[Atlantis]

Thank you microchip8.

microchip8, is there a guide here to show how it's done?

[benwaggoner]

Thank you microchip8.

microchip8, is there a guide here to show how it's done?
This thread includes a lot of detail and a tool for making hybrid HDR-10/HDR10+/DoVi files.

https://forum.doom9.org/showthread.php?t=183479

[Atlantis]

Thank you benwaggoner.

[Balling]

How? Playing DV on PC shows purple image but not this. How is it possible? It's one video track? Don't they have different color information?
Is there any threads discussing this?

It is impossible for Profile 5 Dolby Vision, at least for now. But theoretically HDR10+ is compatible with ICtCp as defined in H.273 and already supported in libplacebo with ICtCp supported in zscale aka zimg.

Not only that but HDR10+ metadata is more complex and should be fully compatible with even more complex Dolby Vision v4 three part curve.

[benwaggoner]

It is impossible for Profile 5 Dolby Vision, at least for now. But theoretically HDR10+ is compatible with ICtCp as defined in H.273 and already supported in libplacebo with ICtCp supported in zscale aka zimg.
It wouldn't be backwards compatible HDR-10, though, and not compatible with anything I can think of. What sort of use case do you imagine?

The general interest in this approach is to have a backwards compatible HDR-10 with static metadata with both flavors of dynamic metadata included, so a TV that supports either HDR10+ or Dolby Vision Profile 8 would have dynamic tone mapping. That's probably over half the HDR TVs in homes today and probably >85% of 2024 TVs shipped.

[Balling]

No, it will be backwards compatible. Dolby Vision profile 5 requires parsing of reshaping data and uses private standard for matrix, that is not HDR10, HDR10 allows all codepoints in H.273. Ha? HDR10 can be RGB too.

[rwill]

Hey Balling, what is this "Dolby Vision v4 three part curve" supposed to be anyway?

[Balling]

You can look up color.org presentation on Dolby Vision v4.

[rwill]

You can look up color.org presentation on Dolby Vision v4.

Can you point me to it? I searched the site but could not find anything about "Dolby Vision v4".

[Balling]

Can you point me to it? I searched the site but could not find anything about "Dolby Vision v4".

https://www.color.org/events/HDR_experts.xalter

Dolby Vision: overview of key features and workflows

[rwill]

https://www.color.org/events/HDR_experts.xalter

Dolby Vision: overview of key features and workflows

Balling, this is just an overview of key features and workflows of Dolby Vision - I know all that. There is nothing in there about a "Dolby Vision v4 three part curve" at all. I also have never heard about such a thing. I think richardpl described you and your intends correctly some time ago.

And remember kids, making up things and linking to random presentations that vaguely touch the topic make you appear pompous.

[Balling]

Balling, this is just an overview of key features and workflows of Dolby Vision - I know all that. There is nothing in there about a "Dolby Vision v4 three part curve" at all.

Another link: https://professionalsupport.dolby.com/s/article/Dolby-Vision-Metadata-Levels?language=en_US



https://professionalsupport.dolby.com/servlet/rtaImage?eid=ka64u000000boEK&feoid=00N4u000003pzDY&refid=0EM4u000001wfEB

[Blue_MiSfit]

CM 2.9 vs 4.0 is absolutely a thing.

4.0 is more powerful (it gives creatives more tools), but has backwards compatibility with devices that only have 2.9 support.

[rwill]

Yeah, but Dolby Vision v4 three part curve is not a thing.

[Balling]

Yeah, but Dolby Vision v4 three part curve is not a thing.

3-segment tone curve is totaly a thing. Continue denying reality.

[rwill]

3-segment tone curve is totaly a thing. Continue denying reality.

Balling, first you switched references and now you switched terminology just so you are able to say you were right all the time...

[hidef_rec]

I have lots of hybrid titles, but all my media players (Zidoo, Dune, Fire Cube 3) always default to DV with my displays that support both HDR formats. Doesn't seem there's a choice in starting playback as to being able to choose 10+ vs DV.

[benwaggoner]

I have lots of hybrid titles, but all my media players (Zidoo, Dune, Fire Cube 3) always default to DV with my displays that support both HDR formats. Doesn't seem there's a choice in starting playback as to being able to choose 10+ vs DV.
It's really up to the player to decide which one to use. I don't recall any way to indicate which one is preferred. I presume they default to DoVi as it has been around for longer.