I recently built a system using Fedora 7 and IVTV 0.1.0 using a PVR-500 with the notorious Samsung tuner.
I am trying to use mythtv as my TV application. It seems that either my tuner is off by quite a bit or my cable company is not using exact "Europe-west" frequencies. All my channels are found, but when I attempt to use them I get a very jerky picture. When I tune the PVR about 300 kHz below the right frequency the picture becomes stable. The frequency offset to use is variable, an across the board -300kHz does not work out. A quick test using mplayer /dev/video1 shows identical symptoms to mythtv. The same tuner works fine under Mediaportal in Windows. (The frequency indicated in mediaportal is the exact frequency of the channel, so no offset) I'm now wondering if this is my card (but works fine under windows), an IVTV or a mythtv problem is. As the IVTV driver does not seem to pass information on signal strength (correct me if I'm wrong) it could be hard for an application on top of IVTV to perform some kind of Automatic fine tuning, or Automatic frequency control, maybe that is a problem. Of course the hardware may not even provide that info, but considering the card is OK under windows I assume the PVR500 does and mediaportal uses it. Hope someone can kick me in the right direction. Johan
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