Watermark for mobile tv
The Fraunhofer Institute for Secure Information Technology has developed porTiVity, which it says is a robust video watermark that permanently labels tv material without hindering the processing work. If protected programs appear prematurely on the internet, broadcasters can use the watermark to locate the leak in the production chain.
In addition, porTIVity provides an authoring system which allows mobile tv producers to track moving objects. These marked objects can be linked to additional information, which appears when the user clicks on them. The additional information is packed with the video files in Material eXchange Format (MXF) and delivered as rich media content to the broadcasting centre, where the signal is processed and aired.
What arrives at the mobile receiver is a special Mpeg4 video containing both the main program and the interactive elements.
