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I have played with all of the different HDMI settings on Apple TV (RGB High, RGB Low, Component, and Auto) in addition to changing the color space on my TV from Normal (16-235) to RGB (0-255). We have found through real-world testing that broadcasters tend to always use BT.709-6 for ATSC 1.0 MPEG2 content regardless of the resolution. ATSC 1.0 follows ITU-R BT.709-6 unless otherwise specified in the MPEG2 headers. When I take the Apple TV out of the chain and use Plex I can display Whites well beyond the 235 upper limit, and I can calibrate down to 16 black. Source content in theory the source video could use any of many possible colorspace standards.
AVS HD 709 CALIBRATION DISC MP4 MP4
I then played the same MP4 file with Plex Media Server to my TV via DLNA.
![avs hd 709 calibration disc mp4 avs hd 709 calibration disc mp4](https://i.imgur.com/1XKHuEU.png)
When I play the material via iTunes Share on my Apple TV I am not able to display anything below 18 black and above 233 white. I have my Apple TV 3 output set to RGB High. The only problem I've had so far is finding a happy medium with settings that look good for both HD and SD channels. 30, 2010 - No changes were made to the MP4 version, and it remains at Version 2c. Last night I downloaded AVS HD 709 MP4 version and put it on a USB stick., plugged into Freesat box and brought up the test patterns. - Currently we have not included downloads for disc or sleeve labels in the first post. I am displaying via a brand new RedMere HDMI cable on a Panasonic 65ST50 which is capable of Whiter than White and Blacker than Black display in the normal 16:235 color space. Get the clips from (look under 'AVS HD 709 Calibration Disk', 'MP4 Version' click '7z archive') (its 22 MB) 'Basic Settings1 Black Clipping.mp4' (you should see flashing bars brighter than '16' but not darker) 'Basic Settings3-White Clipping. Well HD was ok, but SD didn't look too great. Has anyone experienced color clipping with the Apple TV 3? When using test material such as AVS HD 709 MP4 video files I notice issues.