I've checked TMT and as I've mentioned in a previous post it uses an undocumented API. It seems to be hardware-overlay-based because when taking a screenshot you only see the chromakey color instead of the image. If I get technical details on the API used by TMT, I would immediately add this technology to the Stereoscopic Player.
The issue is an output issue. It happens with any content, it is not related to MVC.