vegas 4.0 chroma key problem ?

Discussion in 'Amateur Video Production' started by marks542004, Dec 31, 2004.

  1. marks542004

    marks542004 Guest

    Another stupid question.

    I have downloaded the trial version of Vegas Studio 4 and am quite
    impressed with its features.

    My specific problem is a halo appearance around an actor that was
    overlayed on a background using the chroma-key effect.

    It would be ok for a home movie but I need to do it a bit better.

    If this was a paint application I would create a mask - shrink it a
    little and apply to get a nice crisp edge.

    Any suggestions ?

    Also the specs for the app indicate it only does 16 bit color. I am
    used to dealing with 24 or 32 bit color. The test files I have produced
    look fine on the computer monitor. Can anyone clarify this ?
     
    marks542004, Dec 31, 2004
    #1
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  2. marks542004

    david.mccall Guest

    DV is very difficult for chroma keying because of the heavy compression.
    If you with a less than perfect image, it will never look good. This is one
    area where Betacam is clearly superior to DV.

    There is a program/plug-in that is suposed to do pretty well with good DV.
    I think it was Ultra from http://seriousmagic.com/ukoverview.cfm $545.00
    Then there's Ultimatte, http://Ultimatte.com/ but it is a little more
    expensive.
     
    david.mccall, Dec 31, 2004
    #2
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  3. marks542004

    marks542004 Guest

    Thanks for the comment.

    To clarify I am working with an mpeg file 320 x 240 in size.
    This is being done for a website and client wanted it sized up for a
    DVD sales promotion.

    I have requested the camera tapes so it can be recaptured at full
    resolution.

    I had hoped there might be an edge filter or something to clean it up a
    little.

    It is also a dark green dress on a green screen background that looks
    like it was wadded up in a cupboard for a few years.

    I never had to deal with chroma key work before. I could do it by
    extracting every frame, creating masks and reassembling them but life
    is way to short.

    regards
     
    marks542004, Dec 31, 2004
    #3
  4. marks542004

    david.mccall Guest

    Whoa, that's even worse than trying to pull a matte from DV.
    Aftereffects has a choke that allows shrinking or stretching
    a matte, it also has animated vector masks that can be used
    to do the frame by frame thing. I know what you mean though,
    I had to remove the color from 2 boys walking down the street.
    You would think you could set some key frames and then just
    let Aftereffects tween the rest, but no, I wound up tweaking the
    mask for nearly every frame.

    Does it have to get blown up to full frame? Perhaps it could be
    in a mortise with accompanying text.

    Pulling a clean matte with a badly wrinkled background would
    be pretty much impossible. How about a plan B.

    David
     
    david.mccall, Dec 31, 2004
    #4
  5. marks542004

    marks542004 Guest

    I converted the source mpeg to an uncompressed avi.

    Then bringing it in to Vegas 4 and using chroma key has given me a
    better result.

    I think I can now get a satisfactory result for the web image (using a
    brighter background than planned) and will simply not do a DVD unless
    I can get the actual camera tape recaptured.

    I am really impressed with Vegas 4 after having used Movie Maker . I
    would love extra video tracks but just not in the budget for now.
     
    marks542004, Dec 31, 2004
    #5
  6. marks542004

    Mike Kujbida Guest


    Try Vegas Movie Studio instead.
    Only $100 at
    http://mediasoftware.sonypictures.com/Products/ShowProduct.asp?PID=932 (and
    can be upgraded to Vegas when you have the money). Probably less in retail
    stores.

    Mike
     
    Mike Kujbida, Dec 31, 2004
    #6
  7. I am really impressed with Vegas 4 after having used Movie Maker . I
    Huh ? Vegas 4 has unlimited tracks. Newer version 5 just adds 3D track
    compositing.
    For your keying needs, know that you can use more than one instance of the
    chroma key filter/fx.

    Craig H.
     
    HighPeaksVideo, Dec 31, 2004
    #7
  8. marks542004

    marks542004 Guest

    Sorry, my mistake

    when I refer to Vegas 4.0 that I downloaded a trial version of I meant
    Vegas Movie Studio 4.0 (retail about $99)

    Since I was considering Pinnacle Studio 9 av/dv package I have decided
    to buy the Vegas Movie Studio 4 and plan on upgrading to Vegas 5 a
    little later.

    Using an AVI file for the chroma key made a big difference to the
    output. I was a little concerned at converting formats but the final
    clip looks good.
     
    marks542004, Dec 31, 2004
    #8
  9. marks542004

    david.mccall Guest

    Congratulations,

    David
     
    david.mccall, Jan 1, 2005
    #9
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