2012-12-18, 00:00
I see what you mean but the video world doesn't really use ICC profiles as far as I know, and most consumer level calibration systems don't really offer support for calibrating to video standards, so most people won't really be doing the claibration thing for video and it's perhaps debatable that a target made for photo viewing is appropriate for video. Some of them will offer REC 709 or whatever it is, but in general the way the video world works is by adjusting displays to hit the standard more so than adjusting the image before it's rendered (more like offfset printing, in that regard, as it happens). In a way even the photo world is moving that way (direct hardware calibration systems that work in monitor essentially bypass the ICC system by installing an esswentially null profile at the OS level and all adjustment is done in the monitor LUTs - which is why with a DHC monitor like those I mention above, effectively XBMC is already spot on...)
e.g. Jingai mentions 6500K and gamma 2.2. (both ok for video) - but also mentions 90 cd/m2 - WAY lower than typical home video setups. (Although he/she also mentions leaving the black and white point where they are which doesn't make immediate sense)...but basically - a 90 cd/m2 monitor is appropriate for photo print work, but definitely NOT what you'd calibrate a video system to. And it would appear his profile is doing significant TRC (tonal response curve) adjustment ... much better would be to have the monitor at a sensible brightness/contrast for video when doing video. The nicer calibration systems (again, the DHC in-monitor ones) let you define multiple targets and switch between them easily (and becuase the ICC profile is null, this actually occurs by the monitor doing hardware adjustments. Some can even auto detect if you're doing video etc...and adjust accordingly. Anyway, off topic....but I am not immediately sure ICC profiles for video would really be the right way to go, but it would definitely be a good idea for still image display. One could even do a python slideshow viewer I guess....but that would be qite slow with big/lots of images I'd guess.
(PS I have made some progress on that minimal addon thing but have a whole day of cubby painting in front of me in pre-Christmas prep so I am still a bit off finishing that as it didn't - sad face - work first try. And right now I am off to buy the paint so the above is jsut a very quick brain dump! )
e.g. Jingai mentions 6500K and gamma 2.2. (both ok for video) - but also mentions 90 cd/m2 - WAY lower than typical home video setups. (Although he/she also mentions leaving the black and white point where they are which doesn't make immediate sense)...but basically - a 90 cd/m2 monitor is appropriate for photo print work, but definitely NOT what you'd calibrate a video system to. And it would appear his profile is doing significant TRC (tonal response curve) adjustment ... much better would be to have the monitor at a sensible brightness/contrast for video when doing video. The nicer calibration systems (again, the DHC in-monitor ones) let you define multiple targets and switch between them easily (and becuase the ICC profile is null, this actually occurs by the monitor doing hardware adjustments. Some can even auto detect if you're doing video etc...and adjust accordingly. Anyway, off topic....but I am not immediately sure ICC profiles for video would really be the right way to go, but it would definitely be a good idea for still image display. One could even do a python slideshow viewer I guess....but that would be qite slow with big/lots of images I'd guess.
(PS I have made some progress on that minimal addon thing but have a whole day of cubby painting in front of me in pre-Christmas prep so I am still a bit off finishing that as it didn't - sad face - work first try. And right now I am off to buy the paint so the above is jsut a very quick brain dump! )