[Avid-L2] Re: Full Screen Mode with Avid Hardware and or Avid DNxIO?

 

Upon further  checking the monitor I'm going to try to use is a Dell P2715Qt.  Although I can't find the "t" model listed i do see the P2715Q and the specs say it's optimal resolution is 3840x2160.  UHD spec.  The inputs are display port, mini displayport and HDMI.  I figure an HDMI cable 1.4 spec will work coming out of my DNxIO but I haven't tried it yet. 

Is is correct to assume that the "Optimal Resolution" spec is the same as the monitors native resolution.  I know when they tried to use this monitor to show 4K on an offline system they found they had to set the resolution in system prefs display to HD TV IIRC.  I don't think they had the option to choose 3840x2160.  I'd bet that was a limitation of whatever video card they were using for full screen playback on the mac pro tower.

My understanding is an HDMI 1.4 signal will limit color bit depth to 8 bits but given I'm pixel hunting the color aspect is not critical.  The fact that I will be not viewing pixel for pixel is troubling in theory but given Netflix is using what I believe to be a consumer LG OLED monitor that would mean it too is UHD so they must be looking at a vertically stretched or letterboxed image on their end.  I figure running my DNxIO in 3940x2160 hardware I will see the letter boxed image I've been seeing in the HD downconvert and I can always set the video output setting to stretch to make the image taller and skinnier to fill the screen vertically.  Still this won't be pixel for pixel but if QC is seeing the flashing Red pixel on their consumer monitor I hope I will too on the Computer monitor.

If this doesn't work we have lined up a Samsung 50 inch monitor rental.  I was surprised to find that the rental house, one of the largest in LA, only has this monitor which can only connect as HDMI.  Is the world really just pretending to be professional 4K with all these consumer displays.  I'd love to try the Sony BVM which I bet is available but again the screen size may be too small to see the error.  My eyes aren't that bad but one pixel in 4K is a bugger to see on all the displays I've tried with the exception of when I feed a single quadrant of the Quad HD signal to my Sony PVM 2541 OLED monitor.

---In Avid-L2@yahoogroups.com, <bigfish@...> wrote :

As my 4K pixel hunting continues I am really up against a wall without a true 4K monitor.  I'm told by Netflix QC they are using a 60 inch LG G6B Monitor and they can also see the pixel issues on their Apple Cinema Display 27inch with gamma turned up.

I'm in the process of getting a real 4K monitor but I'm concerned that even if the monitor is 4K if it's on the small side around 30 inchs I still might not be able to see these pixel problems.  I'm suggesting we get a monitor in the 60 inch range like they are using at Netflix to hopefully play along in better sync with them.  Given they say they can see the issues on an Apple 27inch cinema display I'm wondering if we take a 4096x2160 computer LED GUI monitor if that might also show these pixel issues.

We do have that kind of computer monitor and I'm wondering if I could hook it up to one of the unused monitor outputs on my home system with a GTX-680 card if that would work to drive a third monitor.  I've already got my two GUI 1920x1080 monitors running off two ports but there is still an unused DVI-I port on the bottom part of the card.  Could that drive a 3rd 4096x2160 monitor?  If so I seem to remember something about full screen mode not working when Avid IO hardware is attached.  Is that true?  Would I have to turn off my DNxIO to be able to use full screen mode?

I don't have any of the parts in my possession yet to tinker so I'm trying to prepare for what is heading my way.

 

John Moore Barking Trout Productions Studio City, CA bigfish@...

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Posted by: bigfish@pacbell.net

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