Originally Posted by sspears
The PS3 only offers YCbCr 4:4:4 or RGB. You can't select 4:2:2 YCbCr. The display that I have it plugged into does poorly with any 4:2:2 input. If you look at the nearest neighbor examples in our color space article, this is what you see on screen.
I would never send RGB into any non-computer display. The first thing that display does is convert back to YCbCr for processing and then back to RGB. I would rather avoid the double conversion that is lossy.
Stacey, have a couple follow up questions regarding that...
(1.) --- I edited this question, as some terminology was incorrect ----
The article on your website regarding color space and chroma subsampling (which btw is a very good read !) and your reply seem to state that TV's always convert to RGB and then display the image in RGB.
Now, what about TV's that cannot display RGB or YcbCr 444 ? Some user's have posted (after testing specific RGB images with their TV) that their TV's can only handle YCbCr 422, as the test RGB images were not displayed correctly... So following your logic, is it correct to assume these TV's convert the direct in RGB test image to YCbCr 422 and then back to RGB ending up displaying a test image that does not display correctly anymore (double conversion and rounding introduced errors) ?
(2.) How could I test if my TV does (or does not) convert a direct RGB signal first to YCbCr and then back to RGB (like you stated in your reply) or simply takes the RGB signal and displays it w/o converting ? How do you verify that these conversions take place ?
If my TV - which is a VT50 fed by a PS3 set to YCbCr 444 - would take and display a direct RGB signal (w/o converting to YCbCr and then back to RGB) I could avoid one additional conversion in the signal chain...
- MikeEdited by Iron Mike - 5/4/13 at 1:31am