Green screen when playing DV mkv files

Hey guys,
I just ripped my first few UHD movies using dvdfab. I used the settings from the sticky thread for my LG C1 oled tv. During playback the audio is fine, the tv recognizes the DV but the screen is either all green or some other solid color…depending on which file I try.

suggestions?

edit- to date all other files in my library including regular HDR ones play perfectly! so its not my TV, hdmi cable, or similar. Its apparently the Dolby vision files or related settings causing the issue. I’m also using the latest beta FW for the z9x.

thanks!

 

attached is my edid

 

I've never seen this - try these three samples and see what they do - they are Profiles 5, 7 and 8:

https://mega.nz/folder/ZSpRiToS#3WcPg_mFKjlsmBdiZBuwfA

 

Thanks Mark! The EDID I sent you was with my Zidoo connected via HMI through my Yamaha CX-A5200 preamp just as an FYI. I dont believe there's an issue with it being my fireTV stick passes 4k DV through it without issue on netflix.

 

Sounds like a HDMI bandwidth bottleneck. Try a HDMI 2.1 cable (no point in buying 2.0b any more as price difference is negligible). Dolby Vision generally requires higher bandwidth than HDR. Some poorly made HDMI 2.0 cable may not be able to pass signal at 18 gbps.

 

Only for 60Hz.

Dolby Vision at 23/24/25 only uses 297MHz which is HDMI 1.4 bandwidth. This was by design so Dolby Vision can be used on HDMI 1.4 equipment.

 

Doesn't Dolby Vision require HDCP 2.2 which is only available on HDMI 2.0 or later cables?

 

Nope

 

That could be a defective cable, no? A user on another forum had an issue like that.

 

Doubtful - yes a dodgy cable or connection can produce a classic green screen but in this case it's restricted to Dolby Vision - there's nothing special required of an HDMI cable for Dolby Vision.

Ok, for 4K60 it requires the full 597MHz, but that's only because it needs to use RGB for TV Led and 4:2:2 for Player Led and 4K60 content is generally only for demos (with the obvious exception of those idiot Directors who think content looks better at 60/120Hz). Also, if the cable can't sustain the bandwidth it would simply lose sync and you get black screen.

I'm waiting to see what happens with the samples I posted - that should tell us a lot.

 

Thx guys! sorry I wont be back home to try those samples for another few hours. Stay tuned

 

No hurry

 

Mark,
All 3 samples played correctly…the tv indicated DV and no green screen! Thoughts? Is it the ripping technique/software I’m using?

 

Also, I tried using makemkv software instead and it worked! I prefer DVDfab for ease of use. any guidance on proper settings?

 

Yeah - the vast majority of issues I see on this board are down to dodgy non compliant files and I was sure that was the case here - I just didn't want to say anything until you'd tried those three files yourself, one of each Profile (well, there is also Profile 4 and 9, but no-one uses them commercially).

I'm afraid I don't have a copy of DVDFab to look at - as I say, I always use MakeMKV - maybe someone else can chime in who uses it?

 

Thanks mark! I’ll continue to familiarize myself with makemkv as well. Question! By using this software, will the end result Mkv file play on non Dolby vision capable players? Such as my previous osmc vero 4k+?

 

Yes, absolutely - Non DV players will just play the HDR10 base layer.

 

Awesome! Maybe I’ll switch over! Any helpful hints or suggestions when using makemkv? It doesn’t remove the encryption like dvdfab right?

 

Yes it does as long as a hashed key exists for the disc...

 

which is done automatically if it exists while using makemkv right?