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Thread: Could some boday tell me what this for

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    deltec's Avatar
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    Could some boday tell me what this for

    mark dashed flickering line for this service could some boday explain how this works regards deltec

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    VBI line.

    You can stop this in ChannelSelection.
    Help keep OpenViX servers online.Please donate!

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    deltec (31-10-23)

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    deltec's Avatar
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    Could u explain I’m lost what do ido in the Chanel slection

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    It's only of use if you can see a flickering dashed line at the top of the screen on some channels. If you set the option it overwrites the line with a solid one which is less obtrusive. You wouldn't even see the line if you have left your TV with the default overscan setting. Any of us who disable overscan (in order to see the complete borders of the transmitted image (or on-screen menu) will occasionally see this VBI line on certain channels. Google VBI for more info.
    GB Quad Plus, Mut@nt HD51, AX HD61, 80cm dish and Supreme Dark motor. Sony TA-AN1000, Sony UBP-X800M2 Bluray, Odroid N2+ (CoreElec), Monitor Audio Bronze 5.1 speakers

  6. #5
    adm's Avatar
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    Quote Originally Posted by Joe_90 View Post
    It's only of use if you can see a flickering dashed line at the top of the screen on some channels. If you set the option it overwrites the line with a solid one which is less obtrusive. You wouldn't even see the line if you have left your TV with the default overscan setting. Any of us who disable overscan (in order to see the complete borders of the transmitted image (or on-screen menu) will occasionally see this VBI line on certain channels. Google VBI for more info.
    In the good old days of analogue TV they used a few lines of the vertical blanking to insert the teletext/ceefax information. On some monitors you could see this information as white horizontal crawling dots on the very top of the screen. This is digital information on an analogue signal , Black =0, White = 1. Occasionally when one of the lesser channels shows a old TV program that has been rescued and/or restored you will see the dashed flickering line.

    This youtube video shows this information (about 5 seconds worth onwards from the link)
    https://youtu.be/duRKoWyfTWs?t=395

    The whole video explains the technology but you may find the presenter rather dry/boring
    Xtrend ET10K, 2 x satellite tuners 28.2 (Sky FTA), 2 x hybrid (UK Freeview), Zgemma H9S (satellite)

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    I'm of an age to know all that @adm, having been brought up on 405/625 line B&W TV - The Irish terrestrial provider finally turned off its teletext service (overlaid on the digital signal) just last week, as they have been unable to source replacement equipment to continue. I was trying to encourage @deltec to do his own research!
    GB Quad Plus, Mut@nt HD51, AX HD61, 80cm dish and Supreme Dark motor. Sony TA-AN1000, Sony UBP-X800M2 Bluray, Odroid N2+ (CoreElec), Monitor Audio Bronze 5.1 speakers

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