Originally Posted by Robert George
Okay, I've been a little busy to read every post on this lately. Someone explain "green depression".
OK, I'll give it a try.
As you know an HDMI connection between 2 HDMI devices (let's say a DVD player and a projector) carries video as YCbCr. If this YCbCr is SD video
, then it follows Rec 601
. On the other hand, HD video
has its YCbCr coded using Rec 709
Usually display devices correctly identify 720p / 1080i incoming signals at their HDMI inputs as "HD signals", therefore they decode these signals using "Rec 709". This creates a problem for upconverting players unless, in addition to upconverting SD
to 720p / 1080i, they also "transcode" Rec 601 YCbCr values to Rec 709 YCbCr values.
If the player doesn't transcode Rec 601 to Rec 709 when upconverting through an HDMI connection, this mismatch (player sending Rec 601 YCbCr and display assuming Rec 709 YCbCr) produces color errors, and the most noticiable one is "depressed" greens.
So the key to the puzzle would be to know if this player correctly transcodes colors as part of the upconversion process, when connected HDMI to HDMI.