Comment 59 for bug 184440

It's an nVidia problem. It only happens with the nVidia drivers.
It's something about the default value that nvidia X server settings assign to the hue. Changing the hue value in individual applications is in my opinion the wrong approach.
I think it's better to change the hue value in the nvidia panel or change the video complement in gstreamer-properties to something that doesn't use xv.