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Thread: How to create Iris in fixed position

  1. #1
    Registered User donx's Avatar
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    How to create Iris in fixed position

    I'm trying to create an iris in a fixed position for the whole clip. Just an image in a soft circle in the middle of the screen.
    In other software I would use a transition and change the motion and size parameters to be the same for the entire length. I can't figure out how to accomplish this in Speed Edit.
    Any suggestions?

  2. #2
    'the write stuff' SBowie's Avatar
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    Are you saying you would like the entire clip to appear as a vignette?
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  3. #3
    Registered User donx's Avatar
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    Yes I would like to create a vignette. I have created a shape in Photoshop and brought it in as a TGA still frame but is there a way within Speed Edit to accomplish this. Maybe by freezing an iris (circle) transition. That's how I used to do it in Speed Razor.

  4. #4
    'the write stuff' SBowie's Avatar
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    Quote Originally Posted by donx View Post
    Yes I would like to create a vignette. I have created a shape in Photoshop and brought it in as a TGA still frame but is there a way within Speed Edit to accomplish this. Maybe by freezing an iris (circle) transition. That's how I used to do it in Speed Razor.
    You can't really do it that way, but maybe you would find the result from the Colored Border options in the Control Tree satisfactory.

    In the first image below you can see I just raised the number of sides to 36 and then fooled around with smoothing values. The interesting 'starburst' in the other image resulted from simply changing the Radius Multipliers a bit.

    p.s. - kind of cool that this could be animated, as well.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by SBowie; 02-25-2009 at 03:05 PM.
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  5. #5
    Registered User donx's Avatar
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    Thanks Steve. I'll experiment with the Coloured Borders feature. It could give me even more options than I anticipated.

  6. #6
    'the write stuff' SBowie's Avatar
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    Quote Originally Posted by donx View Post
    I'll experiment with the Coloured Borders feature.
    Ooh, how cool is that - someone who spells coloured the same way I do.
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  7. #7
    Registered User Dufusyte's Avatar
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    Post

    Maybe I am missing something, but this appears to be easy to solve.

    Just take your tga, which I presume is a dark border with a transparent center, and place it under the video clip. Make sure the tga is set to Overlay so the alpha in the center will be transparent. As for the length, just drag the border of the tga so it is the same length as the video clip. The tga representation might show stripes if you over-extend it, but it should not cause harm. You can always change your options for still image length to be 60 seconds or something if you want to avoid over-extension.

    And since SpeedEdit interprets premultiplied semi-transparent areas as semi-dark, you can get an extra nice shadow in the semi-transparent areas.

  8. #8
    'the write stuff' SBowie's Avatar
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    Well .... hmmmm - I assumed from post #3 that donx had already done it that way, but was looking for something different.
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  9. #9
    Registered User donx's Avatar
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    I'm experimenting with both techniques.
    The TGA is limited as a mask, because you can't animate the size or movement without revealing the edges of the frame. (well maybe with a huge TGA)
    ... and the colOUred borders are limited as to the shapes you can make.
    At least they can be created within Speed Edit without going to Photoshop. I may design a library of assorted TGA shapes for future use.
    thanks all.

    The video I was working on is now posted here in Hi Def:
    http://vimeo.com/3362658
    I didn't get any Vignettes in it but the future will be framed

  10. #10
    Registered User Dufusyte's Avatar
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    Lightbulb

    Quote Originally Posted by donx View Post
    The TGA is limited as a mask, because you can't animate the size or movement without revealing the edges of the frame. (well maybe with a huge TGA)
    TGA, Scale=105%

  11. #11
    LiveSet Making Machine joseburgos's Avatar
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    Give this a try.
    Add it to the project as it is a title effect and will overlay over your project.
    Key-frame the size to animate the pinhole iris as well as it's X and Y size to fit to your frame.
    Play with any of the settings to also fit your needs.

    Good luck,
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