A nasty bug in Mediaportal 1.1 (latest rev, and previous rev's).
When I open a video for the first time, it works great. When the movie/video is done, and I want to select another one, I get this error:
Unable to play: (MOVIENAME).mkv
VIDEO CODEC: V_MPEG4/ISO/AVC
AUDIO CODEC: DTS (or another codec)
After this, the screen stays black (but the system works, because I can hear clicking sounds and my remote is respoding).
So basically, I need to restart Mediaportal if I want to see another episode/movie/media file.
I use Windows 7 Ultimate RTM (activated) and have a Ati mobility Radeon 3400HD (DXVA capable).
This is a known problem with MPC-HC codec. Do not use MPC-HC H.264 codec under windows 7. You can use the Microsoft codec instead.