Originally Posted by praktik
Hey - hoping for a little guidance here... Noticing in the HDTVTest ZT review: http://www.hdtvtest.co.uk/news/panasonic-txp60zt65b-201305062961.htm?page=Performance
The comment on panasonic and its video processor and 4:4:4 content over a computer connection.
I was planning on using my HTPC's bluray via HDMI for bluray content - should I be bothering to connect w/ DVI-> HDMI to a ZT or other 2013 Panasonic Plasma I hook up - or do other workarounds?
I'm a bit of a newb and reading some older threads is making me think I am being led astray by worse problems on other sets... and potentially by an incomplete understanding of the issue itself.
Guess I just don't want to have my blurays compromised in any way - does this mean spending 100 on a standalone player is better than a 100 on PowerDVD? Was hoping I could keep things simple and pretty much have my computer being the only source aside from my TV provider STB...
hold my hand please..
EDIT: I see now that maybe my question is moot if Bluray content is actually 4:2:2 (or 4:2:0??) anyway - is this really not a big issue at all then? I guess if blurays are already lower than 4:4:4 I probably don't have any content/usage model where this issue would even rear its head, maybe just video games?
There are several things you could first try to see if you can get 4:4:4 to work on your display.
First, what confuses me (and leads me to believe its just poor design) is that all fixed-pixel TV's have 3 sub-pixels to every main pixel on the screen (Red, Green, and Blue). To officially say a display doesn't support 4:4:4 (these days especially with growing connections for High Def. content) would mean that a manufacturer needs to create an algorithm for when to blend certain pixels for 4:2:2 input at all times (which would essentially be an "enhancement" and a conversion process in itself).
Some manufacturers don't give the "PC" input label option for HDMI ports on their TV's (LG and Samsung are officially known to do this, but there may be more. Sony does it with a certain picture mode). Make sure you have your HDMI cable plugged into the "HDMI/DVI" labelled port if your TV denotes it, as some HDTV's only support 4:4:4 input from certain HDMI ports.
You could try and see if your TV can do this "rename input label to PC" feature (have never used a panasonic HDTV before, but going from general HDTV experience), you could try the DVI-HDMI cable trick if the first trick doesn't work, or you could override your display's EDID as per this instruction: EDID Override Instructions for 4:4:4
As for your thoughts on Blu-ray, you don't have to worry about 4:4:4 chroma support even when using a PC (which is still made to use 4:4:4) because Blu-ray and television broadcast material are shown in 4:2:0 chroma (subsampling) which saves a lot of bandwidth for those applications, but since current spec. HDTV's and HDMI version don't support native 4:2:0, then next best thing is 4:2:2 (which has a little upscaling conversion to it).
HDMI 2.0 is rumored to change that with support for native 4:2:0 (as an option, I hope as I even prefer 4:2:0 output upscaled to 4:4:4, but you lose your display's 24hz cinema fps when you enable 4:4:4).
If all else fails, blame the poor design of Panasonic's video processor and menu layout. My grandparents recently bought the 2013 UE60F8000 Samsung LED Smart 3DTV and I hooked my basic laptop to that and its supports 4:4:4 (renaming the HDMI input to "PC" of course). So size is not factor for 4:4:4 support.Edited by MDA400 - 5/8/13 at 7:42am