Originally Posted by Plasmoidial
Is using RGB Full incorrect in this case, and is it going to cause unneeded wear on the set? The only reason I set it to Full, is because apparently this set can accept it, unless this is just completely wrong: http://www.lagom.nl/lcd-test/black.php
I am using madVR, and instead of having 16 - 235 for the PC and madVR, I have them both set to 0 - 255 since this TV apparently can handle it. Should I just be setting everything back to Limited?
"Limited" and "Full" are confusing terms.
For Video output
"Limited" means Video Levels, the native range for video, which has black at 16 and white at 235, but video can contain values in the range 1-254. The values less than 16 are Blacker than Black or BTB, while those above 235 are Whiter than White, or WTW. BTB is useful only for setting Brightness and should be calibrated out, so that 17 is just flashing in AVS HD 709 Black Clipping, while 16 and below are invisible. Depending on the set, you may not be able to get rid of WTW, and arguably, you should keep some of it anyway. See the Spears and Munsil Contrast, Brightness, and Color Space articles here for more:
"Full" means PC Levels, 0-255. To output video at PC Levels, it must be converted from Video Levels to PC Levels. This means expanding 16-235 into 0-255, which actually loses information, namely BTB and WTW. So in this sense, it is really "Limited" that is "full", as "Full" discards information present in "Limited".
For PC video card output
"Full" means for the card to output 0-255, which is the native range for the PC. Note that Video Levels (16-235) (or really 1-254) fit into Full Range card output without change. This is important.
"Limited" means to have the card compress all output to 16-235 right before it puts the signal on the wire. Video must first be expanded to 0-255 for the compression to work out. You would never want to do this, because you lose color dynamic range, and the expansion/compression or levels round trip of video tends to introduce banding. Choosing any YCbCr option is equivalent, because video cards work internally with RGB 0-255.
Putting it together
Best results for video are for the video player to output Limited Range (Video Levels) and the card to output Full Range. This is passthrough mode as the card is not doing any expansion or compression. However, since the TV must be set to the same range as the video player, i.e. 16-235, the desktop will be crushed. Fortunately, this is unimportant if you just care about video. Some players, like Kodi, even adjust their UI to Limited Range when you select that output option. Others like WMC do not, but it doesn't interfere with their use for video. Even routine desktop tasks don't suffer. You'll be able to maintain your computer and even write letters and such with this levels mismatch. It's how I run my HTPC.
If OTOH you want the desktop and video to be at the same levels, you would have the video player output Full Range (PC Levels) and the card output Full Range. You'll sacrifice BTB and WTW, but you can set your TV to 0-255 and forget about it; both video and the desktop will look correct.
Note that in both cases, the card is outputting Full Range.
To make things even more complicated, the video card has a collection of settings that apply to hardware-accelerated video. For my Nvidia cards, I leave this as "With the video player settings," so that the player decides, and the card stays out of the way.