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Trancepriest

Q: multiple FileIn/FileOut nodes

I have multiple green screen ProRes 4444 files that I have to pull the green on. Most are all shot under the same lighting situations. I would like to apply one keyer node to all these clips and then have it render out to separate files. Is it possible to bring multiple clips in with the fileIn node and then have say Keylight work on all those clips and then do a FileOut to multiple clips?

2 x 2.93GHz Quad-Core Intel Xeon Nehalem, Mac OS X (10.5.6), Mac Pro: 9GB of RAM, 3TB HD (4x750GB), AJA Kona LHe

Posted on Aug 22, 2010 9:29 AM

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Q: multiple FileIn/FileOut nodes

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  • by stuckfootage,

    stuckfootage stuckfootage Aug 22, 2010 12:03 PM in response to Trancepriest
    Level 4 (3,040 points)
    Aug 22, 2010 12:03 PM in response to Trancepriest
    Although you could duplicate your FileIn-Keylight-Fileout node chain and
    render all of the FileOuts at once, the problem is that each clip is
    probably a different length, but the rendering timeRange is global.
    So you would have to set the timeRange to the longest clip, and end
    up with many clips with lots of black frames. I guess that would work,
    but it would waste storage.

    I think most people make a separate script for each file. An easy way to do
    this is to open a script in a text editor, change input file and output file
    names, and set the proper time range. You can then batch render all the scripts
    at once using Qmaster.

    Two years ago I came up with a workflow using bash to create the scripts
    automatically for a folder of clips:
    http://discussions.apple.com/thread.jspa?messageID=7525156&#7525156
  • by stuckfootage,

    stuckfootage stuckfootage Aug 22, 2010 1:18 PM in response to stuckfootage
    Level 4 (3,040 points)
    Aug 22, 2010 1:18 PM in response to stuckfootage
    You could also edit together all the clips in FCP,
    export them as one file,
    pull the key in Shake,
    import the keyed file into FCP,
    and cut it up according to the edits of the original clips.

    That technique would use up some storage, but might be faster.