Y'CbCr Video Output Mode

Apple platforms have support for Y'CbCr textures which has lower memory overheads and is slightly more performant when compared with standard BGRA32 textures. This option is disabled by default and can be enabled on the MediaPlayer in at Platform Specific section:

The DisplayIMGUI and DisplayUGUI components automatically detect the use of Y'CbCr mode and switch to a suitable shader. ApplyToMesh/ApplyToMaterial also detect this setting and try to set up the shader on the material to the correct settings, however it requires the shader to have the correct properties. The AVPro Video shaders support this, so if you want to use this on a mesh then make sure you’re using these shaders.