I’ve been testing Dolby Vision playback on my LG C4 OLED using CoreELEC(CPM A14 Build) on a Dune/Homatics box, and I wanted to share some detailed results for discussion. I’ve captured screenshots from Furiosa: A Mad Max Saga (UHD Blu-ray remux) in both Player-LED (12-bit) and TV-LED (8-bit tunneling) modes — and the differences are more interesting than expected.
Display: LG C4 OLED
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Player: Dune Homatics 4K Plus (CoreELEC)
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Source: Dolby Vision
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Audio: Dolby TrueHD 7.1 passthrough
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Display Mode: 3840×2160p @ 23.976Hz
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Disable Noise Reduction : Enabled
What’s interesting is that, despite the 12-bit output in Player-LED mode, the TV-LED image is visibly brighter and often more accurate in terms of highlight tone-mapping and perceived PQ. — it’s how Dolby Vision tunneling is supposed to work ?
Notice right top corner in below images . 8-Bit Tv Led looks more brighter than 12 bit , so in my case TV Led is more accurate ?
is PQ and tone-mapping are often better with TV-LED on LG OLED panels, even if the reported output is “only 8-bit” , please clarify
