Hear only Audio when I'm playing a Record TS-File on Mediaportal

When I will play a Record Video with the TS-Format, I can hear only Audio and you can't stop it with the remote. This happens in all Views, Video, MovingPictures and Series. But in directly in Mediaportal it works, so it can't be a codec problem. A avi-File works fine.  Client and Server are on diffenrent PC's and it happens on all clients. The Videos are on the Sever, in two Folders "Series and Filme"