So I am reading some conflicting information regarding color management, I am particularly interested in Colorsync/active colormanagement on iOS. It seems to only work for still images not for video content from what I can tell using a iPhone 11 pro Max and the latest iPad mini, I did the test by uploading videos with the same pixel values but with different NCLC tags to the device by using iCloud, thumbnails for those videos are displayed as expected using Active Colormanagement, so they all look different to each other, the videos however are all playing back the exact same way. Same Behaviour on tvOS as well. I even used external scopes to measure the iOS output through airplay and a screen recording and it does no adjustments. Now my question is if there are any clear guidelines on how this is supposed to work, the one thing I found was this : https://developer.apple.com/library/archive/technotes/tn2313/_index.html?fbclid=IwAR3HaUr_rEMi9TyvFxKkghQr3Vi7BMD3Azxs6s_Uj4F2X3k_GGd9AwkQ4J4#//apple_ref/doc/uid/DTS40014694-CH1-TARGETEDCOLORMGMT Which claims no active colormangement but I think thats not true anymore, and also cant really be true with wide-gamut iPads, right? I cant put the anandtech link here but you can google "understanding-the-97-ipad-pros-true-tone-display" Looking into building a colormanaged application with ICC calibration profiles for Remote live Colorgrading. Currently we burn in a LUT on the sender but that way can only target a single device.