Problems with Livestreams / Musicvideos / Mediathek (1 Viewer)

[NepoMan]

If I start any kind of livestream (Video in MyMusicVideos, wwitv, ZDF mediathek etc.) MP starts to buffer the stream, then changes to Fullscreen, starts to play sound and the video an then stops immediately. Sound plays, picture freezes and MP crashes (reported by Vista).
Does anyone have experience with this behaviour?

What I did to find a solution:

-tried various settings with VMR9 / EVR
-tried various settings with movie player (DScaler, ffdshow)
-searched in MP groups for information, found nothing

Sorry, if it's a newbie problem, that i don't regognize. Maybe someone has help for me.

Thanks




TV-Server Version: Latest SVN
MediaPortal Version: Latest SVN
MediaPortal Skin: Monochrome
Windows Version: Vista Ultimate SP1
CPU Type: AMD Athlon 64 X2 6000+
HDD: 2 x ST350063 / 1TB / SATA / Dedicated HD for MP
Memory: 4GB DDR2
Motherboard: Dell 0RY206
Motherboard Chipset: NVidia MCP61
Motherboard Bios: Dell 1.0.7
Video Card: NVidia 8600 GT
Video Card Driver: 7.15.11.6371
Sound Card: Soundblaster X-Fi Xtreme Audio / Bose USB Audio (Companion 5)
Sound Card AC3:
Sound Card Driver: 5.10.0.21
1. TV Card: Hauppage
1. TV Card Type: PVR 4000 / Hybrid
1. TV Card Driver: 2.121.25351.0
2. TV Card: -
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: ffdshow (latest)
MPEG2 Audio Codec: ffdshow (latest)
Satelite/CableTV Provider: Astra 19,2 / Hotbird
HTPC Case: Dell Inspirion
Cooling: Thermaltake Heatpipe for Nvidia 8600
Power Supply: Thermaltake Toughpower Q-Fan 500W
Remote: Logitech Harmony 525 / Logitech diNovo Desktop Bluetooth with MediaPad
TV: Gericom LCD
TV - HTPC Connection: Analog RGB