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HDCP / HDMI Color Space

A project log for LD320EUN 32" Display for RasPI

I salvaged a LD320EUN 32" Display without any connection. The Project : make it a display monitor

stanislas-bertrandStanislas Bertrand 08/19/2016 at 02:320 Comments

I got a Chromecast and I was disappointed when no image was displayed on screen. The Chromecast enables HDCP which the HDMI to LVDS controller doesn't support.

I have bought a HDMI splitter in order to overcome the HDCP issue. The display has some issue with the splitter. The screen doesn't display an image when connected directly to the splitter. When doing Splitter -> Selector -> Screen the display show a image correctly from the computer but the image from the Chromecast has a purple tint. Some article on google talks about the hdmi color space being invalid 4:4:4 YCbCr vs 4:4:4 RGB.

Test performed on the HDMI splitter :

The unit doesn't take into account the screen configuration. I have a display that only support RGB 4:4:4. My computer displays fine but not the Chromecast.

The issue would be more color space related than HDCP related. The Chomecast is able to display correctly on a HD-TV. The same HD-TV reports HDCP as not supported under the audio properties.

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