[solved] - MP TV Server cannot find any channels anymore, DVB viewer works

Discussion in 'Installation, configuration support' started by Terra, February 22, 2019.

  1. Terra

    Terra Portal Pro

    Joined:
    August 25, 2009
    Messages:
    230
    Likes Received:
    36
    Ratings:
    +55 / 1
    Home Country:
    Austria Austria
    Show System Specs
    Hi there,



    My cable provider (DVB-C) has updated some channels and therefore I have to re-scan all the available channels.
    The problem I am facing is that MP TV Server cannot find a single channel anymore when searching.

    I then installed DVB Viewer and it can find all channels and play them without issues.

    Does anybody have an idea what the issue with MP TV Server is and how I can fix it?
    I have not changed anything and I use the same TV-Card as before.
    I used the same parameters as DVB Viewer shows me, MPTVS cannot find anything.

    Bildschirmfoto 2019-02-22 um 22.29.13.png Bildschirmfoto 2019-02-22 um 22.28.32.png
     

    Attached Files:

    Last edited: February 23, 2019
  2. Google AdSense Guest Advertisement



    to hide all adverts.
  3. Owlsroost
    • Team MediaPortal

    Owlsroost Development Group

    Joined:
    October 28, 2008
    Messages:
    5,537
    Likes Received:
    2,829
    Location:
    Cambridge
    Ratings:
    +4,131 / 1
    Home Country:
    United Kingdom United Kingdom
    Show System Specs
    I know very little about DVB-C tuning, but...

    Looking at the TVService.log, the log entries where the tuning has been successful have much larger 'SymbolRate' values (1000x larger) e.g.:

    Code (Text):
    1. [2019-02-22 22:38:55,972] [Log    ] [46       ] [INFO ] - Controller:   channel #1 DVBC:tv:ZDFvision ZDF HD Freq:602000 ONID:1 TSID:1011 SID:11110 PMT:0x17D4 FTA:True LCN:6 SymbolRate:6900000 Modulation:Mod256Qam

    ...compared to (for the scans):

    Code (Text):
    1. [2019-02-22 22:38:06,338] [Log    ] [107      ] [INFO ] - dvbc: Scan:DVBC:tv:  Freq:602000 ONID:-1 TSID:-1 SID:-1 PMT:0xFFFFFFFF FTA:False LCN:10000 SymbolRate:6900 Modulation:Mod64Qam
    2.  

    Note the difference - SymbolRate = 6900000 (success) versus 6900 (failed)

    Are the SymbolRate values in your MP TVS tuning parameters correct?
     
    • Thank You! Thank You! x 1
  4. Terra

    Terra Portal Pro

    Joined:
    August 25, 2009
    Messages:
    230
    Likes Received:
    36
    Ratings:
    +55 / 1
    Home Country:
    Austria Austria
    Show System Specs
    That was the solution.
    My Tuning Parameters are correct as far as I understand it, also when I check the other Tuning Parameter Files the Symbolrate is always 4 digits.
    Nevertheless I now modified the XML file and added three zeros at the end of the Symbolrate and now it is working.

    BEFORE:
    Code (Text):
    1. <DVBCTuning>
    2. <Frequency>474000</Frequency>
    3. <ModulationType>Mod64Qam</ModulationType>
    4. <SymbolRate>6900</SymbolRate>
    5. </DVBCTuning>
    AFTER:
    Code (Text):
    1. <DVBCTuning>
    2. <Frequency>474000</Frequency>
    3. <ModulationType>Mod64Qam</ModulationType>
    4. <SymbolRate>6900000</SymbolRate>
    5. </DVBCTuning>
    Bildschirmfoto 2019-02-23 um 13.39.08.png
     
  5. Owlsroost
    • Team MediaPortal

    Owlsroost Development Group

    Joined:
    October 28, 2008
    Messages:
    5,537
    Likes Received:
    2,829
    Location:
    Cambridge
    Ratings:
    +4,131 / 1
    Home Country:
    United Kingdom United Kingdom
    Show System Specs
    Interesting....I'll try and work out where those files are parsed in TV server (I agree the SymbolRate values are 4 digits in the installed DVB-C tuning parameter files).

    Which version of TV Server are you using?

    Which version of windows are you using?

    Which tuning parameters .xml file are you editing?
     
  6. Terra

    Terra Portal Pro

    Joined:
    August 25, 2009
    Messages:
    230
    Likes Received:
    36
    Ratings:
    +55 / 1
    Home Country:
    Austria Austria
    Show System Specs
    I use 1.21 with an USB "Hauppauge WinTV-soloHD DVBT/C Tuner"

    I use Windows Server 2008 R2 with DVB hotfix installed.
    I use my own as my local provider is not part of the standard MP files.
    Here is the file I am using now and where it works:

    Code (Text):
    1. <?xml version="1.0" encoding="utf-8"?>
    2. <ArrayOfDVBCTuning xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    3. <DVBCTuning><Frequency>474000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    4. <DVBCTuning><Frequency>578000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    5. <DVBCTuning><Frequency>634000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    6. <DVBCTuning><Frequency>642000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    7. <DVBCTuning><Frequency>594000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    8. <DVBCTuning><Frequency>602000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    9. <DVBCTuning><Frequency>610000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    10. <DVBCTuning><Frequency>482000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    11. <DVBCTuning><Frequency>490000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    12. <DVBCTuning><Frequency>498000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    13. <DVBCTuning><Frequency>658000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    14. <DVBCTuning><Frequency>618000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    15. <DVBCTuning><Frequency>626000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    16. <DVBCTuning><Frequency>506000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    17. <DVBCTuning><Frequency>650000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    18. <DVBCTuning><Frequency>514000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    19. <DVBCTuning><Frequency>522000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    20. <DVBCTuning><Frequency>530000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    21. <DVBCTuning><Frequency>538000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    22. <DVBCTuning><Frequency>666000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    23. <DVBCTuning><Frequency>546000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    24. <DVBCTuning><Frequency>554000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    25. <DVBCTuning><Frequency>562000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    26. <DVBCTuning><Frequency>570000</Frequency><ModulationType>Mod64Qam</ModulationType><SymbolRate>6900000</SymbolRate></DVBCTuning>
    27. </ArrayOfDVBCTuning>
     
    • Thank You! Thank You! x 1
  7. Owlsroost
    • Team MediaPortal

    Owlsroost Development Group

    Joined:
    October 28, 2008
    Messages:
    5,537
    Likes Received:
    2,829
    Location:
    Cambridge
    Ratings:
    +4,131 / 1
    Home Country:
    United Kingdom United Kingdom
    Show System Specs
    I've had a good look around the code, and as far as I can see the SymbolRate value is always used and stored in the database 'as is' for DVB-C (it's never multiplied by 1000 anywhere), so all I can suggest is that particular tuner driver expects the SymbolRate value as 'bits per second', but most tuner drivers expect it as 'kilobits per second'.

    The Windows documentation for the BDA tuner interface doesn't specify the units for that value (as far as I can find), unfortunately.
     
    • Thank You! Thank You! x 1
Loading...

Users Viewing Thread (Users: 0, Guests: 0)

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice
  • About The Project

    The vision of the MediaPortal project is to create a free open source media centre application, which supports all advanced media centre functions, and is accessible to all Windows users.

    In reaching this goal we are working every day to make sure our software is one of the best.

             

  • Support MediaPortal!

    The team works very hard to make sure the community is running the best HTPC-software. We give away MediaPortal for free but hosting and software is not for us.

    Care to support our work with a few bucks? We'd really appreciate it!