Freeview EPG-Anyone know what channel sends the guide data?

Discussion in 'Electronic Program Guide' started by technoweary, November 16, 2019.

  1. technoweary
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    technoweary MP Donator

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    Hi Everyone, hope you are all well
    I am setting up MediaPortal1 in Hastings where there is DVB-T only
    I had absolutely no success getting any EPG from selecting the main broadcasters, (BBC/ITV etc), in the setup so in frustration I selected all channels
    After about 30 minutes the Hard Drive went into mad thrashing mode and I got a full EPG
    Obviously just selecting ALL channels is not the "Correct" way of doing it so I am guessing its a case of poor signal strength that may have caused the delay in getting the EPG
    Now that I know the EPG data is there in some channel, and will be grabbed eventually, all I need to know now is which channel has the EPG data?
    If anyone knows I would appreciate the advice?
    Regards
    TW


     
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  3. CyberSimian
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    For DVB-T/T2 in the UK, all MUXes carry the EPG for all channels, but not identically -- each MUX has an EPG datastream that carries a different combination of programme info.

    Some MUXes prefer their own channels. So if you tune to one of those MUXes, their channels in the EPG will populate more quickly than channels in other MUXes, but if you wait long enough all channels will populate.

    The most agnostic MUX is the BBC one -- it splits the EPG carrying capacity "fairly" among all of the MUXes. So this is the MUX to use for grabbing the EPG.

    The correct advice is to select one channel for EPG grabbing, and only one channel. From the preceding, the channel to choose is one of: "BBC1", "BBC2", "BBC1 HD", or "BBC2 HD". Here are a couple of posts that give details:
    EPG for DVB-T not working
    TV Not Recording

    I don't know why there seemed to be a delay when you tried this originally. If you have the "refresh interval" set for (say) two hours, TV Server won't grab the EPG more frequently than once every two hours. A way to force an immediate EPG grab is to use the "Refresh EPG" button in "TV Server Config". That deletes the existing EPG and then immediately starts grabbing a fresh EPG (but only if you are not using any of the tuners to watch or record TV or radio).

    -- from CyberSimian in the UK
     
  4. technoweary
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    technoweary MP Donator

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    Hi CyberSimian
    Very good to hear from you again, I hope you are well
    Thank you for the info on the EPG
    I'm thinking that the actual TV signal strength is very low. I notice the HD freeview is breaking up in bad weather
    There is not much that can be done as they have a good aerial installed
    I will recommend a Freesat dish as the Media Centre has got a dual card
    Thanks again for the information, very much appreciated
    Cheers
    TW
     
  5. CyberSimian
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    In the UK there are three MUXes that transmit HD (which means DVB-T2 instead of DVB-T). However, only one of these MUXes is broadcast at "full strength"; the other two MUXes are broadcast at "barely receivable" strength.

    Example: I receive signals from the Rowridge transmitter, which has:

    (1) Three MUXes broadcasting at 200 kW power.
    (2) Three MUXes broadcasting at 50 kW power.
    (3) Three MUXes broadcasting at 20 kW power.

    Using my TBS-6284 quad-tuner card, I can receive (1) and (2) reliably, but (3) is mostly unwatchable. Using my Pinnacle 2000i dual-tuner card, I can receive (1), but (2) and (3) are nowhere to be found (the Pinnacle tuners are significantly less sensitive than the TBS tuners).

    Unfortunately, only one of the HD MUXes resides in group (1). The other two HD MUXes reside in group (3). Consequently, I have given up trying to watch the channels in group (3).

    The channels in the group (1) MUX include the five public-service HD channels (BBC1, BBC2, ITV1, Four, Five). The channels in group (3) are the other HD channels (BBC4, BBC News, CBeebies, Four+1, 4Seven, RT, QVC), plus various minor SD channels.

    The broadcast powers of the various MUXes will be different at your location, but the common characteristic is that the two HD MUXes that are in my group (3) are low power everywhere, and most people have difficulty receiving them. Also note that these two MUXes will be discontinued in perhaps one to two years, which is why I am not going to spend any money improving my aerial system.

    If you can receive the five public-service HD channels with watchable quality, that is probably about the best that you can expect using terrestrial.

    -- from CyberSimian in the UK
     
  6. technoweary
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    technoweary MP Donator

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    Thanks for that
    I have reset the EPG grabber and currently going through the main channels one at a time with the idle time setting at 1 minute
    So far no EPG but I know it's in there somewhere and I have to find it!
    Cheers
    TW
     
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