Gspot told me that xvid was the needed source and now it works.

Thank you guys



Does anybody know how to determine what codec i need or where is a good
source of them ?

Program called GSPOT.

( or is there something else wrong maybe ?)

The latest codec to become popular is the fellow mpeg4 codec XVID(DIVX
spelt backwards). That is probably your problem.

http://www.roeder.goe.net/~koepi/XviD-Dec-230203.exe