Previewing superimpositions in Final Cut Express

Discussion in 'Amateur Video Production' started by Bob Bethune, Sep 26, 2003.

  1. Bob Bethune

    Bob Bethune Guest

    I'm working on a project where I have long superimpositions,
    picture-over-picture, with lots of opacity changes. Lots of them are a
    minute or more, and even on a fast dual-processor Mac, I wind up sitting
    there rendering a lot between adjustments.

    However, I just discovered a workaround. After you drop the video into the
    timeline and set some keyframes for the opacity adjustments, you can then
    hop through the effect by just hitting shift-left arrow or shift-right-arrow
    to jump backward and forward. That moves the playhead in 1-second
    increments, which allows you to get a pretty decent idea of how the effect
    will look as you move through the clip. You can use that to make a much
    better set of adjustments before you render.

    I hope this helps somebody out there-it's definitely helping me!
    Bob Bethune, Sep 26, 2003
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  2. Bob Bethune

    Max Volume Guest

    Great tip, Bob!
    Max Volume, Sep 27, 2003
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  3. Bob Bethune

    Bob Forward Guest

    Are you doing any compositing? I'm having the dickens of a time with
    my FCE on an iMac. Every time I try a tricky greenscreen shot or do a
    color correction the program crashes, and from then on will crash on
    startup. The only way out of it that I have found is pitching the
    whole "User Preferences" file into the trash, which at least allows me
    to run the program again. Since I don't know many people running FCE,
    I thought I'd ask.
    Bob Forward, Sep 29, 2003
  4. Bob Bethune

    Bob Bethune Guest

    I haven't tried compositing yet. The program has been reasonably stable on
    my machine, but my machine is a dual processor 1.2GHz G4 with a gig of RAM.
    So it has plenty of resources to work with that it wouldn't find on an iMac.

    Even on this machine, however, I have to make sure to shut down almost
    everything. When I set the machine up for video editing, I kill SetiAtHome,
    turn off energy saving, turn off software update, turn off screensavers,
    turn off everything I can find that runs in the background and might steal
    cycles or otherwise get in the way. I've only had problems when I didn't do
    that. Since trashing the preferences file on your system fixes the problem,
    you might try this approach and see if you can identify just what causes the

    It's inconvenient to have to do this sort of thing, but video is still a
    very demanding application for a computer. At least it's gotten from
    impossible to inconvenient. I can remember when we were all gaga and goo-goo
    over computers that could display a photograph.
    Bob Bethune, Oct 1, 2003
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