Weird effect.....Mariah Carey on MTV Movie Awards

Discussion in 'Amateur Video Production' started by TJM, Jun 13, 2005.

  1. TJM

    TJM Guest

    I was watching the MTV Movie Awards (lame, as usual) and Mariah Carey sang a
    song. The coolest thing about this was that she was in a bright red dress, but
    everything else in the live shot was black & white (such as the audience and her
    dancers).

    I've been picking my brain trying to figure out how they do this, but I'm
    stumped. Since it's a live shot and no F/X tricks like greenscreen were used,
    how did they show only her in color but everything else in B&W? Obviously, this
    has been done before in films, but accomplished with post-production tricks.
    This was live, so only cameras and perhaps a processing computer were used.

    Anyone have any ideas?
     
    TJM, Jun 13, 2005
    #1
    1. Advertisements

  2. TJM

    NerdRevenge Guest

    Free tutorial

    http://www.wrigleyvideo.com/videotutorial/tutdes_colorpass.htm
     
    NerdRevenge, Jun 13, 2005
    #2
    1. Advertisements

  3. TJM

    TJM Guest

    Free tutorial Thanks for the tutorial link.

    However, I still cant understand how multiple cameras applied a color filter and
    tracking matte to Carey during a live feed? I assume there was a processing
    computer at work here...much like the yellow line effect during NFL games?

    How did the filter work so good that it included Carey's red dress, skin tones,
    blond hair.....and make everything else black & white. Perhaps the backdrop and
    stage were easy to exclude, but how did it remove her dancers and the
    audience....who shared similar skin tones and red clothing?

    This would seem rather easy for post-production, but the fact that it was live
    is quite impressive. I know the yellow line in the NFL broadcasts requires a
    whole truck of computers to achieve the effect.
     
    TJM, Jun 13, 2005
    #3
  4. TJM

    Chris M Guest

    I was watching the MTV Movie Awards (lame, as usual) and Mariah Carey sang
    a
    Picking out and separating a color is a piece of cake to do real-time.
    Doesn't require much processing power.
     
    Chris M, Jun 13, 2005
    #4
  5. TJM

    TJM Guest

    Picking out and separating a color is a piece of cake to do real-time.
    Yes, I can understand it would be easy with a single color.....but what about a
    wide range of colors - like Carey's dress, blond hair, skin tones? How do you
    isolate just these colors on her but nothing else in the shot like audience
    members or backup dancers?
     
    TJM, Jun 13, 2005
    #5
  6. TJM

    Chris M Guest

    I didn't see the performance, but if she was wearing a brightly colored
    dress, you simply isolate the color in question and grayscale everything
    else. Unless I misunderstand what the effect was, it's really quite simple,
    and I can't see MTV forking out a lot of cash on some specialised live color
    effect for a Mariah performance.
     
    Chris M, Jun 13, 2005
    #6
  7. TJM

    TJM Guest

    I didn't see the performance, but if she was wearing a brightly colored
    It's not as simple as you think. She was wearing a red dress....but the filter
    also isolated her skin tones (prob. thousands of colors), blond hair (which is
    not red), and everything else about her.

    I can understand how this would be easy in post.....just produce a tracking
    matte that is very tight around Carey in every frame. To do this during a live
    broadcast with multiple cameras seems very technically difficult.....
     
    TJM, Jun 13, 2005
    #7
  8. TJM

    Chris M Guest

    Maybe I misunderstoof your description, but it sounded pretty simple. Mariah
    carey is a b/w shot, and only her dress is colored, right? If that's the
    case, there is virtually no processing done to isolate skin, hair, or
    anything other than the dress. If the dress is a bright color, this is the
    only color that's picked out, and everything else is greyscaled. The colored
    dress effectively works as a mask, so everything apart from this color is
    treated as a single object/color that only needs a uniform greyscale effect.
     
    Chris M, Jun 13, 2005
    #8
  9. When they did the movie Gladiator and rebuilt the Coliseum none of us had
    that technology. Now you are seeing another technology that will trickle
    down to us later. The software set up a figure mask in live output. The
    performance was done several times before the audience saw it live. They had
    plenty of time to make the effect work through rehearsal.

    It's like that line on the football field that moves with the play. It's
    live but the players run across it. Gee, no one has explained that one
    either, have they?
     
    Digital Video Solutions, Jun 13, 2005
    #9
  10. TJM

    Chris M Guest

    I didn't see the performance, but if she was wearing a brightly colored
    Aaaahh, so all of Mariah was in color, not just the dress. Yes, then it gets
    a little bit more tricky, and like DVS said, it's one of those effects that
    will gradually be making its way down to sub-blockbuster level.
     
    Chris M, Jun 13, 2005
    #10
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.