Glad to hear that Pio is up to the task. Mine just arrived and I am looking forward to take it out for a spin once back from travels.
As far as color spaces/depth/chroma subsampling, there seems to be some inconsistency in how folks use all these terms. Couple of useful links:http://en.wikipedia.org/wiki/Deep_Colorhttp://en.wikipedia.org/wiki/Chroma_subsamplinghttp://en.wikipedia.org/wiki/Color_s...l_color_spaces
Labels as 4:2:2 or 4:4:4 usually refer to chroma subsampling, or absence thereof. Bit depth of the colorspace is a different thing. RBG "true color" is 3x8=24 bit (without alpha/transparency channel) and YCbCr colorspace is derived from RGB as well. HDMI specs up to (but excluding) 1.3 and digital equipment incorporating these standards takes one of them, or either as input, and both of them would be 24-bit 4:4:4 (i.e. no chroma subsampling). HDMI 1.3 adds extended bit dept up to 3x16=48 bit.
DVD and BR comes encoded in 4:2:0 format and its total bit depth is 12 bits (as opposed to RBG that is 24 bits 4:4:4). Some codecs (http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC
) might support formats with less chroma subsampling or with higher bit depth, but at this point highly unlikely that Hollywood will be willing to release such material.
Most of today’s consumer level digital displays will display only 24 bit “true color”. Some of the industry specialized displays will actually display more than 24-bits, but I am not aware of any dedicated video/HT display that will do that (input welcome, especially for FPJs, would love to get me one of these).
A different story is what are the specs of digital display’s video processing engine. This is where some displays (like Pio Kuro) get to process signal at 36-bit, and also in case they are HDMI 1.3 profile compliant and are receiving signal from HDMI 1.3 compliant source, can accept up to 48-bit depth signal as input.
So each BR/DVD path starts with 4:2:0 12 bit signal and should end with 4:4:4 24 bit signal. However, converting encoded video signal to 36 bit or 48 bit colorspace (whatever subsampling theoretically, but hopefully 4:4:4 in Pio) and doing all the video processing in such rich colorspace does yield really noticeable inprovements regardless of conversion back to 24-bit colorspace for viewing. My experiences so far are with ES5000 on BR, and with HTPC on DVD by using high quality 48 bit YV12 (4:2:0) to RGB24 conversion. Can hardly wait to see how is Pio doing it.