Well I have no idea if this is it, but the Zidoo (like the Dune and just about all media players) only plays the Minimum Enhancement Layer of DolbyVision. The Full Enhancement Layer is discarded. The FEL is actually sent as a 1920x1080 "video" on top of the actual 4K video, and Dolby only licenses FEL playback to disc players. (It also requires dual HEVC decoders.)3. I noticed something weird that I think I've narrowed down to the Dolby Vision layer and wanted to see if anyone who has this 4K disc and a player capable of DV can test? Here's the thing:
a. I backed up the 4K disc to MKV and played it back via a Zidoo Z9X media player which is capable of handling DV.
b. At around 44 minutes into it just after the seagull scene, the camera pans quickly to the left and then up to the top of the lighthouse. During this pan-up, the lighthouse becomes all pixelated and there are artefacts in the sky background around the top of the lighthouse.
c. When I viewed the 4K disc on my Sony X800 (not capable of DV but capable of HDR), this scene played fine with no artefacts.
d. I then switched off the DV on the Zidoo Z9X (I switched it from "Auto" to "HDR mapping"), played this scene on the MKV and it played fine with no artefacts.
e. So, I'm guessing there's something weird in the either the DV layer or how the Zidoo Z9X handles it (probably the latter). This is the second disc I have with weird DV behaviour that isn't exhibited when DV is switched off (the original Manchurian Candidate 4K is the other one).
f. If someone is able to please try this out and let me know what you see, that'd be mucho appreciated. I'd post this on another forum but you get the usual "you're doing it wrong" know-it-all response from the 20-something demographic. Y'all know the crowd.
Most of the time, you can't even tell, but every now and again, there is a movie that shows the difference when played via a media player. I think Saving Private Ryan maybe had an issue? I can't recall for sure.