Dolby Vision playback on Samsung TV

[Akila3]

I understand there is an option with cpm to somehow play Dolby Vision content , even FEL content on Samsung TV that currently do not offer Dolby Vision support on their TVs. with some kind of CPM settings that bakes the DV content over HDR? or something to do with LLDV playback on the Samsung TV?
I couldn't find a complete guide or anything that could let me know what can or cannot be done, only fragmented data).

1. Can someone maybe provide some details information on that?
2. and also what are the steps/settings that needs to be set in order for it to work?
3. is it only limited to Ugoos device or it is also possible to be conducted on Homatics R4k+?

[gilgameshinter]

answered here:

https://github.com/cpm-code/xbmc/discussions/78#discussion-7901136

3. works on Ugoos and Homatics boxes, I have all these devices.

[Akila3]

You have different settings in cpm for Ugoos or Homatics, or you are using the same settings?

[gilgameshinter]

same settings

[todochief]

answered here:

#78 (comment)

3. works on Ugoos and Homatics boxes, I have all these devices.

My Homatics is almost unusable due to stuttering when playing MKV especially FEL using CMP 14 even though it is connected directly to a LG OLED - The Uoogos on the other hand works flawlessly even though it it has a Lumagen and Trinnov in the chain and is connected to a projector.

If someone knows how to make the Homatics work with CPM 14 I am all ears.

[gilgameshinter]

@todochief

did you add the advancedsettings.xml mentioned on the A14 release page? I have one Ugoos AM6B+ and three Homatics boxes, they work fine, though I use external audio systems and not directly connected to TV, one Sony HT-A9M2 (Theatre Quad) and Samsung Q995C soundbars.

[ensingerphilipp]

Yes

:EDIT: The following was apparently misinformation:

Basically every DV Profile works, but when its FEL CE converts it to profile 8.1 or MEL (you have to specify that setting) before it can work with DV-LL (and therefore on Samsung TVs). By converting, you loose part of the Enhancement Layer. So yeah no FULL FEL for you but still actually yes FEL cna be played and does display Dolby Vision on Samsung TV but rather Profile 7 MEL or Profile 8.1

[ensingerphilipp]

But everyone keeps saying DVLL can only transmit One Layer 12bit and FEL requries two which is why one is lost. I would really like to know whats actually happening here haha

[chucky88]

But everyone keeps saying DVLL can only transmit One Layer 12bit and FEL requries two which is why one is lost. I would really like to know whats actually happening here haha

neither DV-Std nor DVLL transmit dual layers, merging two layers is done before it's sent to TV.
DV-LL - box applies FEL ('merge' two layers), processes DV metadata and sends stuff to TV
DV-Std - box applies FEL ('merge' two layers), sends to TV along with DV metadata to be processed on TV

[ensingerphilipp]

So it rewlly isnt only RPU but the other layer is also baked in?

[chucky88]

So it rewlly isnt only RPU but the other layer is also baked in?

yes

[chucky88]

some limitations of DVLL are:

• our box cannot process DV CMv4.0, falls back to v2.9 (and that's not going to change)
• tonemapping overall is less accurate on the box as it only has very limited info about TV
• some implementation bugs (that are mitigated here)