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TV video size

Last post 08-27-2008 4:10 PM by Sean Matthews. 4 replies.
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  • 06-12-2008 2:30 PM

    TV video size

    We are showing a live video feed of CNN or Fox News on a daily basis.  The quality is very poor and grainy.  Does anyone know what is the best pixel resolution for the TV?  Also the video feed always comes in at 4:3 format.  We want to fill the wide screen 16:9 plasma tvs to prevent burn in.

     

    Syl Morgan 

  • 06-17-2008 10:55 AM In reply to

    Re: TV video size

     

    Syl,

    You will need to find out from the manufacturer what the recommended native resolution is for your make/model TV.  Once you know that then you can change the settings to 16:9 on the TV (with the remote).

    Aimee
  • 06-27-2008 10:31 AM In reply to

    • PhillyGuy
    • Top 25 Contributor
    • Joined on 04-24-2008
    • Malvern, PA
    • Posts 2

    Re: TV video size

    Sylvia Morgan:

    We are showing a live video feed of CNN or Fox News on a daily basis.  The quality is very poor and grainy.  Does anyone know what is the best pixel resolution for the TV?  Also the video feed always comes in at 4:3 format.  We want to fill the wide screen 16:9 plasma tvs to prevent burn in.

     

    Syl Morgan 

     

    Hi Syl,

    The Video Window is meant for picture-in-picture applications, not necessarily full-screen. You're good to about 640x480 then there is gradual degradation beyond that. Yes, the feed is only 4:3.

    What other AxisTV users do to show full-screen output is to route the signal from your tuner (or other video source) directly to the display. When you want to show something full-screen, switch the inputs on the display itself (e.g. from AxisTV via VGA to tuner on DVI). You might also consider splitting the signal from the tuner so that there is a feed to your Channel Player for PIP and another feed to your display for showing full-screen.

    Another suggestion for preventing burn-in is to use AxisTV's ability to schedule layout changes. You could change the layout periodically to change the static borders of each content block. For example, you could switch the position of a crawl from the bottom to the top. An added bonus is that the change in layout tends to attract attention as viewers check to see what else has changed.

    All the Best,

    Randy Nepomuceno, CTS
    Application Consultant
    Visix, Inc.
    Filed under: ,
  • 07-01-2008 11:26 AM In reply to

    Re: TV video size

    Thanks, that is very helpful.  Is 640 x 480 also the best resolution for a WMF video?

    Sylvia 

  • 08-27-2008 4:10 PM In reply to

    Re: TV video size

    There is not a suggested size for WMF.  It's really a function of how the video was encoded or converted.  For example, if you encode NTSC video at 30 fps (frames per second) at a "resolution" of 640x480 and then attempt to replay that video in an AxisTV content block that is twice that size, you will see noticable degredation.

     My suggestion is to encode the video at a "resolution" equal to or close to the size of the content block you intend to use for playback.

    It's not uncommon for you to see the same effect occur when you download a small video from the Internet and then attempt to play it back at full screen.

    Sean M. Matthews
    President
    Visix, Inc.
    Direct 678.392.1752
    Toll Free 800.572.4935
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