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Green Screen Question

Discussion in 'Engineering Dept.' started by jbnews, Apr 22, 2016.

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  1. jbnews

    jbnews News Director

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    I hope this is the right thread for this. But, I have a question. When creating a news studio relying on green screens of different shapes and sizes, is it possible to put different videos/pictures on different screens while all in the same camera shot? If so, what are the free programs the enable one to do this? Thanks!
     
  2. lanman

    lanman Assignment Editor

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    You'd probably have to have something like what news stations have for "virtual reality" greenscreen studios.

    As far as free software for doing this, you could try a video editor such as Kdenlive (open source). For live streaming, you could try OBS, also open-source.

    https://obsproject.com/index
     
  3. brianpr3

    brianpr3 News Director

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    on that topic my nbc station down in fort myers uses blue as teir weather wall whats the difference?
     
  4. Pine Belt Media

    Pine Belt Media AM Anchor

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  5. TriangleTriadMediaNews

    TriangleTriadMediaNews Managing Editor

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    CBS6 in Richmond actually uses both IIRC.
     
  6. Eat News

    Eat News Station Group CEO

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    There was an anchor in San Diego that had the perfect blue eyes that keyed out...
    They switched to green after that.
     
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  7. jbnews

    jbnews News Director

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    Sorry to bump this thread...
    Is there a way to keep the background on the green screen in one spot, so it doesn't move or cut some of it off when you move the camera around?
     
  8. LoadStar

    LoadStar AM Anchor

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    When doing chroma key ("green screen"), the background (generally) doesn't move when the camera moves - it's anything that is in front of the green (or blue) screen that would appear to move.

    (I say generally, because technically, the down markers and such in football are a specialized type of chroma key that detects camera position, so that the markers move when the camera moves. Also, I expect that the chroma key used in movies and TV production could use cameras that can transmit back their movements so that the CG backgrounds can be rendered later to correspond to the movement.)

    Basically, what's happening with the type of chroma key used in TV news is that anything that is that shade of green (or blue) is "keyed out" - replaced with content from the computer. The computer doesn't have a clue about camera position or anything like that... it's a very dumb process, it just goes "green/blue = content from computer."
     
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  9. Weeters

    Weeters Director of Operations
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    If you want to invest in a virtual reality system and robotic cameras or encoded tripod heads, yes.

    You can also do motion tracking in post production if you're not doing the key live.
     
  10. jbnews

    jbnews News Director

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    I am not doing the keying live. Is there a way to do the motion tracking in After Effects?
     
  11. Chief-O

    Chief-O AM Anchor

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    It shouldn't be too hard....it would just be a matter of keyframing the background *just right* to line up with the camera movement. I would follow up by saying that it'd be a process of trial and error, but that would probably be true only for folks like me with basic AE knowledge....
     
  12. caliwxdude

    caliwxdude Primary Anchor

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    YouTube is your friend.

    Seriously, there are a million 12-year-olds with too much time on their hands who post awesome tutorials for pretty much everything on YouTube. It's basically how I learned all the skills that got me the job I have today...
     
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  13. Eat News

    Eat News Station Group CEO

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    I always wanted to meet the guy that washes the Storm Ranger...

    From another former "604" user...

    (Sorry...but I just couldn't pass that one up...it was tooo easy.)
     
    #13 Eat News, Oct 17, 2017
    Last edited: Oct 17, 2017
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  14. rkolsen

    rkolsen A Member of Sinclair Broadcast Group

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    Especially while it’s radiating.
     
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