An argument could be made for displaying content over 235, so that you are viewing 16-255 rather than 16-235. I seem to recall someone saying that YCbCr to RGB conversion can result in values that go up to 240 with extremely saturated colors.
But I don't agree with that, and anything so saturated that it is approaching 240 is likely due to over-exposure/clipping, and will actually discolor the highlights.
If you are editing video, then yes, you need to be able to see the full range below 16 and above 235.
If you are watching
video, there's no reason to show the below black and above white content.
There are different ways to approach this, but I see no difference between clipping in the renderer rather than having the display do it.
And if you clip it in the renderer, you definitely avoid seeing discoloration in the highlights, but most TVs won't actually let you clip them now, no matter what you set the contrast value to.
If you are using a renderer such as madVR I actually see some benefit to having it perform the levels expansion in addition to all the colorspace transformations it performs.
Originally Posted by Nevcairiel
Most of the people in the industry making such claims have no idea about HTPCs and design their systems and talks for CE devices. In this area, 16-235 is the only valid choice, clearly. But HTPCs are more, are different.
I agree wholeheartedly. Stand-alone devices are black boxes where you don't really know what is going on inside them, and at best you can measure their output and see if it is accurate or not. (a surprising number of Blu-ray players are not
While the initial setup may be a bit more involved with an HTPC, I actually trust developers like Nevcariel and Madshi a lot more, as they actually have people looking over their work with a critical eye and if there is a problem found, they actually acknowledge it and fix the problem, rather than waiting another year and silently rolling the fix into another $500+ device. (if it gets fixed at all)
I think most of the anti-HTPC sentiment - which seems to be going away these days - is largely due to people not liking or understanding computers, and preferring the "simple" approach of buying an expensive Blu-ray player and accepting whatever they get from it.