Originally Posted by bodosom
There's no such thing as LLDV. Apple sends classic DoVi Profile 5* which should be supported on any reasonably modern AVR. It worked without issue on my previous (three years old) Denon AVR.
*OPPO sends DoVi P5 (tv led) as plain Ycc rather than encapsulated in RGB. I haven't looked to see if Apple has switched to that format and since my video chain doesn't care they might have and it wouldn't be immediately obvious to me.
Well, Player Led Dolby Vision which was introduced for Sony TVs is often called LLDV.
I performed an LLDV test with my ATV4K and LG B7A just last night on request from a poster in an HDfury thread who wanted to know how to get an ATV4K to output LLDV.
I have an HDfury Vertex that allows selection of custom EDIDs to present to players. One of the custom EDIDs available in the Vertex and other HDfury devices is named:
Sony A1 LLDV V2
I configured my Vertex to use that Sony specific EDID even though I have an LG OLED because I know that my LG supports LLDV based on previously configuring my Oppo 203 to Player led Dolby Vision.
When I had my device chain configured as ATV4K > Denon x4200w > HDfury Vertex > LG, the ATV4K would only send normal TV led Dolby Vision in 4K24 RGB 8bit 297MHz HDCP 2.2 format. So it appears my Denon won't pass LLDV or perhaps I needed to restart some or all devices.
After removing my AVR from the device chain: ATV4K > HDfury Vertex > LG B7A I was successful getting LLDV sent to my LG that recognized it as Dolby Vision. This was while playing Netfix title Altered Carbon.
The format sent for LLDV was: 4K24 422 BT2020 12bit Dolby Vision 297MHz HDCP 2.2. This is the same format my Oppo player sends when configured to Player led Dolby Vision instead of TV led Dolby Vision.
When I changed the custom EDID back to the LG Dolby Vision EDID, the ATV4K stopped sending LLDV and sent 4K24 RGB 8bit 297MHz HDCP 2.2.
So unless you have a TV that presents an EDID specifically advertising support for Player led LLDV, the ATV4K won't send it. Or you have a HDfury device that can spoof an EDID and a TV that supports both TV led and Player led Dolby Vision like the recent LG OLEDs do.