This problem may be difficult to reproduce, as it requires DVB channels that broadcast AC3 audio and channels that do not broadcast AC3 - a combination which appears to only exist in Australia! Also, it seems to only occur with Dvico DVB cards (any model).

The following description applies to the Standard Definition channels only, and to any CVS in March.

We have 6 "free-to-air" DVB-T channels in Melbourne.
Three of them (7, ABC2 and SBS) do not transmit AC3 audio (I will call these the non-AC3 group), so the AC3 PID value for those channels is 0.
The other three (9, 10 and ABC) do transmit AC3 audio (I will call these the AC3 group), so the AC3 PID has a 3-digit value.

When I use the Dvico FusionHDTV to watch TV, and I try to change channels, it works OK when I change to another channel within the same "AC3 group" (for example from 9 to 10), but MP freezes when I change to a channel in the other "AC3 group".

For example, if I am watching a non-AC3 channel (7, for eg) and I then try to change to an AC3 channel (10 for eg), then MP will freeze.

Similarly, the reverse applies - if I am watching a channel in the AC3 group and I try to change to a channel in the non-AC3 group, MP freezes.

This is the error message that I get in the MediaPortal.log:-

12/03/2006 10:11:55 AM DVBGraphBDA:FAILED cannot connect pins:0x80040217
12/03/2006 10:11:55 AM DVBGraphBDA:Failed to connect samplegrabber filter->mpeg2 demultiplexer


I can happily switch between channels within either group (the AC3 group, or the non-AC3 group) without MP freezing!

And, if I use my other DVB-T card (a DNTVLive! LP) I don't get this error....


These are the steps to reproduce this problem, :-

1. Go into My TV and select a channel (Timeshifting is OFF). Note if it belongs to the AC3 group or the non-AC3 group.

2. Change to another channel in the same group and verify that it changes OK.

3. Wait about 30 seconds and then select a channel in the other group.

4. At this point MP will freeze and can be exited with ALT+F4, but Task Manager indicates that MediaPortal.exe will still be running. Use Task Manager to kill MediaPortal.exe.

The log files from the above test are attached....