Hi Guys, I have a Problem, I want to delete pure black on my video, but i doesnt work correctly.
The first link the solution, the second link the orginal without chroma key. (issue: The Timer on the top has black stribes next to it)
The Orginal Timer Video is rendered with highest quality in mpeg2.

http://www.fotos-hochladen.net/uploads/bildschirmfotodahkuxlpys.png
http://img5.fotos-hochladen.net/uploads/bildschirmfotokrisazt49b.png

Is there missing any special codec, or what could I do?
I mean, the orginal is completely black (I rendered it before with a png, wich is completly black from gimp).

It would be great if someone can help me