When you start MPEG2 playback like DVB-T live-tv you get in mediaportal.log with Nvidia GeForce9500GT the following lines. Also the result is that deinterlace looks really crappy.

2008-10-30 02:06:21.961000 [Debug][MPMain]: VMR9: SetDeinterlaceMode()
2008-10-30 02:06:21.961000 [Debug][MPMain]: VMR9: SetDeinterlaceMode - FormatType = VideoInfo2
2008-10-30 02:06:21.962000 [Debug][MPMain]: VMR9: SetDeinterlaceMode - Interlaced frame detected
2008-10-30 02:06:21.962000 [Debug][MPMain]: VMR9: AvailableDeinterlaceMode - 0: 6cb69578-7617-4637-91e5-1c02db810285
2008-10-30 02:06:21.962000 [Info.][MPMain]: VMR9: Unknown H/W de-interlace mode
2008-10-30 02:06:21.963000 [Debug][MPMain]: VMR9: AvailableDeinterlaceMode - 1: 5a54a0c9-c7ec-4bd9-8ede-f3c75dc4393b
2008-10-30 02:06:21.963000 [Info.][MPMain]: VMR9: Unknown H/W de-interlace mode
2008-10-30 02:06:21.963000 [Debug][MPMain]: VMR9: AvailableDeinterlaceMode - 2: 335aa36e-7884-43a4-9c91-7f87faf3e37e
2008-10-30 02:06:21.964000 [Info.][MPMain]: VMR9: Unknown H/W de-interlace mode
2008-10-30 02:06:21.964000 [Debug][MPMain]: VMR9: AvailableDeinterlaceMode - 3: b338d50d-a64a-4790-ac01-475b64252a78
2008-10-30 02:06:21.964000 [Info.][MPMain]: VMR9: Unknown H/W de-interlace mode
2008-10-30 02:06:21.965000 [Debug][MPMain]: VMR9: AvailableDeinterlaceMode - 4: f9f19da5-3b09-4b2f-9d89-c64753e3eaab
2008-10-30 02:06:21.965000 [Info.][MPMain]: VMR9: Unknown H/W de-interlace mode


h4. Steps to Reproduce
See above