TV-Server DVB-IP card scrambled channel problem | Page 2

Discussion in 'Television (MyTV frontend and TV-Server)' started by Franzkovic, November 26, 2014.

  1. georgius
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    georgius Retired Team Member

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    @mm1352000 because @Franzkovic is using DVB-IP, in theory I can add similar functionality into MPEG2 TS parser of new IPTV filter.


     
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  3. Vasilich
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    could you point to the lines in log where people from openpli can see that their software not doing that what it was intended to do? Maybe then they can see their error
     
  4. mm1352000
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    This would not be desirable. There are IPTV streams which are really encrypted, and it would not be right to just mark them as free.

    There are no specific log lines to point to. It is the fact that certain lines are missing that tells me that the stream is encrypted.
    Perhaps a better way to do this would be to collect a small TS dump for analysis:
    http://wiki.team-mediaportal.com/1_MEDIAPORTAL_1/18_Contribute/4_Development/Debugging/TS_Dumps

    Even 10 seconds should be enough.
     
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  5. georgius
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    georgius Retired Team Member

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    I was thinking about option to force not encrypted/encrypted flag and also about option to not modify this flag (default case).
     
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  6. Franzkovic
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    Franzkovic MP Donator

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    Hey guys,

    thanks for not giving up on this topic :)

    Maybe I can contribute a little more info. I saved a short free stream and a short scrambled stream TS with VLC. Afterwards I analyzed it with MPEG-2 TS packet analyser.

    Please see the results attached. From the pictures it looks like the paytv screen also comes with "Transport scrambling control" set to zero. I dont know much about ts headers but it looks like the stream is flagged as free to air? If it is of any help I could also provide the ts files for download so you can check yourself?


    If they are just marked as free they still would not be viewable because they are still encrypted right? So yoiur concern is more from a design point of view?
     

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  7. georgius
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    georgius Retired Team Member

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    @Franzkovic I hope that you still have that TS stream. Can you check in MPEG-2 TS packet analyzer if there is some TS packet with PID 1 (tick PID, enter 1 into text box and press blue right triangle icon (Go to next packet))?
     
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  8. mm1352000
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    Hmmm, yes. :confused:

    Yes please! :)

    Yes, exactly.
     
  9. Franzkovic
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    Franzkovic MP Donator

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    I just created a dump with
    ahhhh ... very good ... after doing like you suggested I see that "transport scrambling control" is indeed set to 3 instead of 0

    So I guess I have to ask the guys at openpli to fix this :cautious:

    @georgius I would greatly appreciate if you could include something like "ignore scrambling flag" radiobox into the IPTV Filter nevertheless :)

    just fyi I have put the streams on dropbox as well as the mp ts dumps: https://www.dropbox.com/sh/3ep2wiuwbovuor8/AAAM-gwZ3PBch2sJ4NbbDi6Ga?dl=0
     
  10. mm1352000
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    I confirm. That's also what my analyser software shows:
    upload_2014-11-29_0-17-31.png

    (All the packets for the PIDs in red are marked as encrypted.)
     
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  11. georgius
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    georgius Retired Team Member

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    I think that this is caused by 4 CA descriptors in PMT referencing to CA PID 0x18BA, 0x1BBA, 0x1FBA and 0x1ABA, but none TS packet with such PID is in stream.
     
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