TV Video and Audio stuttering after channel change (1 Viewer)

[bagnol]

TV-Server Version: 1.0.2.0
MediaPortal Version: 1.0.2.0
MediaPortal Skin: Default
Windows Version: XP SP3
CPU Type: AMD 3800+
HDD: Maxtor 80g
Memory: 1gb DDR 400
Motherboard: Foxconn nf4uk8aa
Video Card: Nvidia 9400gt
Video Card Driver: 6.14.11.7783
Sound Card: On board
Sound Card AC3: AC3
Sound Card Driver: Not known
1. TV Card: Leadtek DTV1000t
1. TV Card Type: DVB-T
1. TV Card Driver: CX23880.4.0.112.3223
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: MPC
MPEG2 Audio Codec: MPC
h.264 Video Codec: ArcSoft
Satelite/CableTV Provider: N/A
HTPC Case: Generic ATX
Cooling: CPU, GPU and Case Fan
Power Supply: 400w
Remote: Xbox Wireless
TV: Magnavox 68cm CRT
TV - HTPC Connection: S-Video

When I first turn on the tv, the video and audio are fine. When I change channel, both the video and audio stutter. The only way I can stop the stutter is to turn off the tv and turn it back on. After this, everything works fine...until the next time I change channel.

This is a problem that has been present in my system for a long time through many MediaPortal releases, both stable and SVN.

• I have done countless clean installs of both Windows XP and MediaPortal and all of its components.
• I have tried numerous codecs.
• I have put the timeshift and recording folders on a dedicated HDD.
• I have switched off system restore.

None of this helped.

In the attached logs, starting from around 9:50am on the 31st March I did the following:

• Turned on MP
• Turned on TV and viewed for a short period (fine)
• Changed channel and viewed for a short period (stuttering)
• Turned TV off and On and viewed for a short period (fine)
• Exited MP

Any help would be greatly appreciated.

 

[bagnol]

I should add that I do not beleive that this is a hardware issue. I have recently tried a linux/mythtv setup streaming live tv to XBMC (both on PC and Xbox). This worked flawlessly.

 

[tourettes]

TsWriter:

31-05-2009 09:54:52.265 Recorder: TIMESHIFT Info : Program clock reference backward jump ( -3340 ).
31-05-2009 09:54:57.78 Recorder: TIMESHIFT Info : Program clock reference backward jump ( -10615 ).
31-05-2009 09:54:57.156 Recorderid b04 , No PayLoad, Continuity Counter should be the same ! 2 ( prev c )
31-05-2009 09:54:59.453 Recorder: TIMESHIFT Info : Program clock reference backward jump ( -10712 ).
31-05-2009 09:55:02.140 Recorder: TIMESHIFT Info : Program clock reference backward jump ( -10710 ).
31-05-2009 09:55:02.890 Recorderid b04 , No PayLoad, Continuity Counter should be the same ! 2 ( prev c )
31-05-2009 09:55:07.671 Recorder: TIMESHIFT Info : Program clock reference backward jump ( -10808 ).
31-05-2009 09:55:16.187 Recorder: TIMESHIFT Info : Program clock reference backward jump ( -11007 ).
31-05-2009 09:55:17.234 Recorder: TIMESHIFT Info : Program clock reference backward jump ( -7659 ).

TsReader:

31-05-2009 09:55:27.015 [1668]Video Continuity error... 7 ( prev c )
31-05-2009 09:55:27.015 [1668]Video Continuity error... e ( prev 8 )
31-05-2009 09:55:27.015 [1668]Video Continuity error... b ( prev 0 )
31-05-2009 09:55:27.015 [1668]Video Continuity error... f ( prev 8 )
31-05-2009 09:55:27.015 [1668]Video Continuity error... e ( prev 2 )
31-05-2009 09:55:27.031 [1668]Video Continuity error... 5 ( prev e )
31-05-2009 09:55:27.031 [1668]Video Continuity error... 5 ( prev 9 )
31-05-2009 09:55:27.031 [1668]Video Continuity error... 3 ( prev c )
31-05-2009 09:55:27.031 [1668]Video Continuity error... 7 ( prev c )
31-05-2009 09:55:27.031 [1668]Video Continuity error... 2 ( prev b )
31-05-2009 09:55:27.765 [1118]Video Continuity error... 7 ( prev c )
31-05-2009 09:55:27.765 [1118]Video Continuity error... e ( prev 8 )
31-05-2009 09:55:27.765 [1118]Video Continuity error... b ( prev 0 )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 4 ( prev 6 )
31-05-2009 09:55:27.765 [ff0]vid:OnThreadStartPlay(0.000000) 1.00 0
31-05-2009 09:55:27.765 [1118]Video Continuity error... f ( prev 8 )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 9 ( prev 4 )
31-05-2009 09:55:27.765 [1118]Video Continuity error... e ( prev 2 )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 8 ( prev a )
31-05-2009 09:55:27.765 [1118]Video Continuity error... 5 ( prev e )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 1 ( prev e )
31-05-2009 09:55:27.765 [1118]Video Continuity error... 5 ( prev 9 )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 0 ( prev 1 )
31-05-2009 09:55:27.765 [1118]Video Continuity error... 3 ( prev c )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 3 ( prev 0 )
31-05-2009 09:55:27.765 [1118]Video Continuity error... 7 ( prev c )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 3 ( prev 5 )
31-05-2009 09:55:27.765 [1118]Video Continuity error... 2 ( prev b )
31-05-2009 09:55:27.765 [1118]Audio Continuity error... 8 ( prev 5 )
31-05-2009 09:55:28.156 [1118]Video Continuity error... 2 ( prev 6 )
31-05-2009 09:55:28.156 [1118]Audio Continuity error... e ( prev 0 )
31-05-2009 09:55:28.156 [1118]Video Continuity error... b ( prev 4 )
31-05-2009 09:55:28.156 [1118]Audio Continuity error... f ( prev c )
31-05-2009 09:55:28.156 [1118]Video Continuity error... 0 ( prev 2 )
31-05-2009 09:55:28.156 [1118]Audio Continuity error... f ( prev 1 )
31-05-2009 09:55:28.156 [1118]Video Continuity error... 5 ( prev f )
31-05-2009 09:55:28.156 [1118]Audio Continuity error... 3 ( prev f )
...

Usually these are pointing to the direction that the signal itself is bad, but if it happens only when changing channels it could be something else. But at least the data that is written to the timeshifting buffer has serious flaws in it.

Maybe TV card fails to tune properly? Does it happen as well when you are switching between channels that are located in the same mux/transponder?

 

[bagnol]

Hi tourettes and thanks for the reply.

I've tried changing between as many different channels as I have with no luck.

I am able to use the Winfast PVR application without trouble, as well as the old MP TV engine. The problems only arise when using the MP TV server.