Setting up Twinhan 102g with new release

[halcut]

Ashwin - I have been playing around with different codecs to identify my crashing issue. Is it possible for you to attach your bda.grf which resides under gbpvr root directory. As we both use twinhan 102g card and nvidia codecs, I think the graph should be same.

Sub - Attached are the log files for the channel switch crash. I found following error in the GBPVRRecordingService.exe.log.

12/28/2006 7:22:25 AM.625 ERROR [8] Unexpected failed in DvbEpgReader.LoadChannels(): System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at NativeUtilities.BDARecorder.GetPsiParserEPG()
at GBPVR.Backend.Common.DvbEpgReader.LoadChannels(IEpgUpdateProgressCallback callback)

Now you have mentioned this as a bug in the survival guide which is caused by antivirus or firewall. I have nothing installed as this machine has a new XP build. However I still wanted to install the patch but looks like I have to contact microsoft (which might be problem ) to get the patch. If you have the patch, could you please attach it here? I will also try to get it somehow.

I also see below error in GBPVRRecordingService.exe-native.log

07:22:25.890 INFO Starting graph...
07:22:25.906 ERROR Failed to start BDA Graph
07:22:25.906 VERBOSE ERROR_BUSY & DIERR_ACQUIRED

Do you think this is the problem?

logs.rar

Cheers.

[sub]

Ashwin - I have been playing around with different codecs to identify my crashing issue. Is it possible for you to attach your bda.grf which resides under gbpvr root directory. As we both use twinhan 102g card and nvidia codecs, I think the graph should be same.

The .grf files are not portable between machines, so you wouldnt be able to open his bda.grf file. You're better off looking at the gbpvr.exe-native.log which list the filters used:

07:19:58.156 VERBOSE Graph contains the following filters:
07:19:58.156 VERBOSE - Default DirectSound Device
07:19:58.156 VERBOSE - Video Renderer
07:19:58.156 VERBOSE - BDA MPEG2 Transport Information Filter
07:19:58.156 VERBOSE - MPEG-2 Sections and Tables
07:19:58.156 VERBOSE - GB-PVR PSI Parser
07:19:58.156 VERBOSE - NVIDIA Audio Decoder
07:19:58.156 VERBOSE - NVIDIA Video Decoder
07:19:58.156 VERBOSE - GB-PVR Flow Status
07:19:58.156 VERBOSE - MPEG-2 Demultiplexer
07:19:58.156 VERBOSE - MDAPI Filter
07:19:58.156 VERBOSE - DTV-DVBS 878 Digital Capture Filter
07:19:58.156 VERBOSE - DTV-DVBS 878 Digital Tuner Filter
07:19:58.156 VERBOSE - Microsoft DVBS Network Provider

[sub]

12/28/2006 7:22:25 AM.625 ERROR [8] Unexpected failed in DvbEpgReader.LoadChannels(): System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at NativeUtilities.BDARecorder.GetPsiParserEPG()
at GBPVR.Backend.Common.DvbEpgReader.LoadChannels(IEp gUpdateProgressCallback callback)

Now you have mentioned this as a bug in the survival guide which is caused by antivirus or firewall. I have nothing installed as this machine has a new XP build. However I still wanted to install the patch but looks like I have to contact microsoft (which might be problem ) to get the patch. If you have the patch, could you please attach it here? I will also try to get it somehow.

I also see below error in GBPVRRecordingService.exe-native.log

07:22:25.890 INFO Starting graph...
07:22:25.906 ERROR Failed to start BDA Graph
07:22:25.906 VERBOSE ERROR_BUSY & DIERR_ACQUIRED

Do you think this is the problem?

No, thats not the same as the firewall incompatibility listed in the survival guide thread - different error message.

This error occured because your recording service was trying to do an EPG update at the same time you were trying to watch live tv, ie effectively two processes were trying to use the capture device at the same time, leading too problems.

The EPG update does know not to run when recordings are taking place, but there is currently a known bug that can allow it to run at the same time the user is watching TV. For now the best thing to do to avoid this is set the EPG Update time in the config app to some hour of the day when you're unlikely to be awake watching live tv. Its set to 7:00AM by default, but if you restart the recording service any time between 7:00AM - 8:00AM it'll run again.

[CodeMonkey]

Sub:
At the risk of veering somewhat off topic ... what do your Flow Status and PSI Parser filters do? Are they mainly for debugging?

[sub]

The Flow Status filter is used for checking that data is still flowing, and checking for changes in the video stream (resolution, aspect ratio etc).

The PSI Parser filter is continuously parsing the Service Information contained in the transport stream. This is used for lots of things - monitoring for PMT changes (dynamic PID mapping and autocorrection etc), identifying stream types, DVB subtitles etc, extracting the DVB EPG, identifying channels and their name and pids during channel scanning, and lots of other stuff...

[CodeMonkey]

Thanks for the info Sub.
I'm trying to figure this DVB stuff out. So I started writing a 'simple' DVB-S application that won't do much at first except show live TV. But there is much more to that than meets the eye at first glance! I was surprised at first not to find sample/example source for a program such as this somewhere on the web. But now that I see what's involved I'm not so surprised anymore

[sub]

Yeah, it was a big jump for me when I moved from analog to digital. With analog I found most thing I needed already existed, so all I needed was a little glue to make it work. When it came to digital I was daunted by just how much I had to develop myself.

[halcut]

Sub,

I have tried many different things like - reinstalling various codecs, reinstalling gbpvr and recreating the capture sources but I still get the crashes. Everytime it crashes I look into the logs but nothing specific just general verbose messages. I am attaching the log files after the recent crash. This problem can be reproduced every single time by changing channels few times.

BTW - Everything works fine when I use MyTheatre or DVBDream.

Please take a look. Cheers.

logs.rar

[sub]

To narrow down where its happening, do you have some channels that are free to air? If so, it'd be worth disabling multidec support temporarily, and trying to change channels between the FTA channels, and see if you have the same crash.

[sub]

Maybe also try posting the psi.log files for two of these crashes, so I can compare if they were doing the same thing in both streams at the time of the crash