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MediaPortal 1
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Television (MyTV frontend and TV-Server)
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<blockquote data-quote="JePe" data-source="post: 278345" data-attributes="member: 76841"><p><strong>TV-Server Version</strong>: mediaportal-svn-06-13-2008--23-32-Rev19376</p><p><strong>MediaPortal Version</strong>: mediaportal-svn-06-13-2008--23-32-Rev19376</p><p><strong>MediaPortal Skin</strong>: Blue</p><p><strong>Windows Version</strong>: XP SP3</p><p><strong>CPU Type</strong>: AMD X2 4050e</p><p><strong>HDD</strong>: 200Gb WD ATA</p><p><strong>Memory</strong>: 2Gb Corsair PC6400</p><p><strong>Motherboard</strong>: Gigabyte 78GM-S2H</p><p><strong>Video Card</strong>: onboard</p><p><strong>Video Card Driver</strong>: Catalyst 8.5</p><p><strong>Sound Card</strong>: onboard</p><p><strong>Sound Card AC3</strong>: </p><p><strong>Sound Card Driver</strong>: </p><p><strong>1. TV Card</strong>: TechnoTrend C-1501</p><p><strong>1. TV Card Type</strong>: DVB-C</p><p><strong>1. TV Card Driver</strong>: BDA 5.0.0.19</p><p><strong>2. TV Card</strong>: </p><p><strong>2. TV Card Type</strong>: </p><p><strong>2. TV Card Driver</strong>: </p><p><strong>3. TV Card</strong>: </p><p><strong>3. TV Card Type</strong>: </p><p><strong>3. TV Card Driver</strong>: </p><p><strong>4. TV Card</strong>: </p><p><strong>4. TV Card Type</strong>: </p><p><strong>4. TV Card Driver</strong>: </p><p><strong>MPEG2 Video Codec</strong>: PowerDVD 7.3</p><p><strong>MPEG2 Audio Codec</strong>: PowerDVD 7.3</p><p><strong>h.264 Video Codec</strong>: </p><p><strong>Satelite/CableTV Provider</strong>: </p><p><strong>HTPC Case</strong>: OrigenAe H6</p><p><strong>Cooling</strong>: </p><p><strong>Power Supply</strong>: 250W</p><p><strong>Remote</strong>: IrTrans</p><p><strong>TV</strong>: Samsung LE26R81B</p><p><strong>TV - HTPC Connection</strong>: HDMI</p><p></p><p>Maybe I can bring some life to this thread. I'm a software developer myself, not active in MediaPortal nor an expert on C#. I can however read the source code quite well to a certain level and I've done many DVB-T projects. I face the same problem as most of the posters in this thread, no audio/video using a TechnoTrend C-1501 DVB-C card.</p><p></p><p>I've been looking into tv.log, tswriter.log and TimeShifter.cs and I notice the following:</p><p></p><p>1) tv.log tells me that my card has a CAM attached which is not the case. This doesn't seem to be the root of the problem though.</p><p>2) tswriter.log tells me on a successful tune</p><p></p><p>2008-06-25 20:44:55.109375 [10]: card: WaitForTimeShiftFile - waiting _eventAudio & _eventVideo</p><p>2008-06-25 20:44:55.125000 [14]: PID seen - type = Audio</p><p>2008-06-25 20:44:55.125000 [14]: audioVideoEventHandler Audio</p><p>2008-06-25 20:44:55.500000 [14]: PID seen - type = Video</p><p>2008-06-25 20:44:55.500000 [14]: audioVideoEventHandler Video</p><p>2008-06-25 20:44:55.500000 [10]: card: WaitForTimeShiftFile - start of the video & audio is seen</p><p></p><p>This means the callback 'AudioVideoEventHandler' in TimeShifter.cs is done.</p><p></p><p>On an unsuccesful tune the callback is never done, or maybe long after the WaitForTimeShiftFile timeout.</p><p></p><p>2008-06-25 20:45:18.406250 [4]: card: WaitForTimeShiftFile - waiting _eventAudio & _eventVideo</p><p></p><p>PMT tables are being received correctly though. WaitForTimeShiftFile reverts back to a fallback scenario that fails for a reason which results in the no audio/video, I'll come to that. At the least the missing callback is suspisious (timing or racecondition pops in my mind) and is one of the root causes.</p><p></p><p>3) From the tv.log I can see upon a channel switch that a tune is done and PMT is received. The logging tells me timeshifting hasn't been stopped (already strange) as there is no "card: StopTimeShifting user:" log line.</p><p>After the tune, I enter the TimeShifter.Start method again and from the logging I conclude that the following expression is true: "if (subchannel.IsTimeShifting)". That is strange as it cannot be timeshifting since I already tuned away from my previous channel, there simply is no input TS yet (there is but not yet decoded). Even so, WaitForTimeShiftFile is called and there we get into a serious problem.</p><p></p><p>2008-06-25 20:45:22.156250 [4]: card: WaitForTimeShiftFile - new observer based method didn't work, using the old one as fall back!</p><p>2008-06-25 20:45:22.156250 [4]: card: timeshifting fileSize=12340320 initialFileSize=12340320 minTimeShiftFile=102400</p><p></p><p>Look at the last line, if I evaluate the following source code line</p><p>"if (((initialFileSize < minTimeShiftFile) && (fileSize >= minTimeShiftFile)) || (fileSize >= (initialFileSize + minTimeShiftFile)))"</p><p>the expression will never be true, since it waits for the .ts file to be increased with 102400 bytes. It will never reach this as there is no input data.</p><p></p><p>Hence, the function runs into a timeout, returns false and eventually TvResult.NoVideoAudioDetected.</p></blockquote><p></p>
[QUOTE="JePe, post: 278345, member: 76841"] [b]TV-Server Version[/b]: mediaportal-svn-06-13-2008--23-32-Rev19376 [b]MediaPortal Version[/b]: mediaportal-svn-06-13-2008--23-32-Rev19376 [b]MediaPortal Skin[/b]: Blue [b]Windows Version[/b]: XP SP3 [b]CPU Type[/b]: AMD X2 4050e [b]HDD[/b]: 200Gb WD ATA [b]Memory[/b]: 2Gb Corsair PC6400 [b]Motherboard[/b]: Gigabyte 78GM-S2H [b]Video Card[/b]: onboard [b]Video Card Driver[/b]: Catalyst 8.5 [b]Sound Card[/b]: onboard [b]Sound Card AC3[/b]: [b]Sound Card Driver[/b]: [b]1. TV Card[/b]: TechnoTrend C-1501 [b]1. TV Card Type[/b]: DVB-C [b]1. TV Card Driver[/b]: BDA 5.0.0.19 [b]2. TV Card[/b]: [b]2. TV Card Type[/b]: [b]2. TV Card Driver[/b]: [b]3. TV Card[/b]: [b]3. TV Card Type[/b]: [b]3. TV Card Driver[/b]: [b]4. TV Card[/b]: [b]4. TV Card Type[/b]: [b]4. TV Card Driver[/b]: [b]MPEG2 Video Codec[/b]: PowerDVD 7.3 [b]MPEG2 Audio Codec[/b]: PowerDVD 7.3 [b]h.264 Video Codec[/b]: [b]Satelite/CableTV Provider[/b]: [b]HTPC Case[/b]: OrigenAe H6 [b]Cooling[/b]: [b]Power Supply[/b]: 250W [b]Remote[/b]: IrTrans [b]TV[/b]: Samsung LE26R81B [b]TV - HTPC Connection[/b]: HDMI Maybe I can bring some life to this thread. I'm a software developer myself, not active in MediaPortal nor an expert on C#. I can however read the source code quite well to a certain level and I've done many DVB-T projects. I face the same problem as most of the posters in this thread, no audio/video using a TechnoTrend C-1501 DVB-C card. I've been looking into tv.log, tswriter.log and TimeShifter.cs and I notice the following: 1) tv.log tells me that my card has a CAM attached which is not the case. This doesn't seem to be the root of the problem though. 2) tswriter.log tells me on a successful tune 2008-06-25 20:44:55.109375 [10]: card: WaitForTimeShiftFile - waiting _eventAudio & _eventVideo 2008-06-25 20:44:55.125000 [14]: PID seen - type = Audio 2008-06-25 20:44:55.125000 [14]: audioVideoEventHandler Audio 2008-06-25 20:44:55.500000 [14]: PID seen - type = Video 2008-06-25 20:44:55.500000 [14]: audioVideoEventHandler Video 2008-06-25 20:44:55.500000 [10]: card: WaitForTimeShiftFile - start of the video & audio is seen This means the callback 'AudioVideoEventHandler' in TimeShifter.cs is done. On an unsuccesful tune the callback is never done, or maybe long after the WaitForTimeShiftFile timeout. 2008-06-25 20:45:18.406250 [4]: card: WaitForTimeShiftFile - waiting _eventAudio & _eventVideo PMT tables are being received correctly though. WaitForTimeShiftFile reverts back to a fallback scenario that fails for a reason which results in the no audio/video, I'll come to that. At the least the missing callback is suspisious (timing or racecondition pops in my mind) and is one of the root causes. 3) From the tv.log I can see upon a channel switch that a tune is done and PMT is received. The logging tells me timeshifting hasn't been stopped (already strange) as there is no "card: StopTimeShifting user:" log line. After the tune, I enter the TimeShifter.Start method again and from the logging I conclude that the following expression is true: "if (subchannel.IsTimeShifting)". That is strange as it cannot be timeshifting since I already tuned away from my previous channel, there simply is no input TS yet (there is but not yet decoded). Even so, WaitForTimeShiftFile is called and there we get into a serious problem. 2008-06-25 20:45:22.156250 [4]: card: WaitForTimeShiftFile - new observer based method didn't work, using the old one as fall back! 2008-06-25 20:45:22.156250 [4]: card: timeshifting fileSize=12340320 initialFileSize=12340320 minTimeShiftFile=102400 Look at the last line, if I evaluate the following source code line "if (((initialFileSize < minTimeShiftFile) && (fileSize >= minTimeShiftFile)) || (fileSize >= (initialFileSize + minTimeShiftFile)))" the expression will never be true, since it waits for the .ts file to be increased with 102400 bytes. It will never reach this as there is no input data. Hence, the function runs into a timeout, returns false and eventually TvResult.NoVideoAudioDetected. [/QUOTE]
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