FCP and generators: forcing an entire clip to re-render?
FCP and generators: forcing an entire clip to re-render?
- Subject: FCP and generators: forcing an entire clip to re-render?
- From: Steve Christensen <email@hidden>
- Date: Fri, 29 May 2009 11:49:27 -0700
I have a generator effect that varies over the length of a clip in a
way that depends upon the clip length. For example, think of the case
where you have a bouncing ball that goes from the left- to the right
side of the frame over the course of the clip duration.
If I drag my generator effect to the timeline and configure it, then
tell FCP to render the clip, the render happens and the render status
line above the clip changes from orange (unlimited) to blue
(rendered). When I play back the clip, I see the equivalent of the
bouncing ball happily bouncing from the left- to the right side of
the frame.
If I then increase the length of the clip, I see the blue line above
the previously-rendered section, the orange line above the section
just extended. If I "render all," the newly-added section is
rendered. If I play back the clip, I see the bouncing ball going from
left to right, then in the newly-added section, the ball hops back a
bit and then bounces to the right edge.
I'm trying to figure out if I have something set up incorrectly in
the plugin or if this is just the way that FCP works. There are only
two things I think I have control over, thus those methods are set up
as:
- (BOOL) variesOverTime
{
return YES;
}
- (NSDictionary*) properties
{
return [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool:YES],
kFxPropertyKey_SupportsRowBytes,
[NSNumber numberWithBool:NO],
kFxPropertyKey_SupportsR408,
[NSNumber numberWithBool:NO],
kFxPropertyKey_SupportsR4fl,
[NSNumber numberWithBool:NO],
kFxPropertyKey_MayRemapTime,
[NSNumber numberWithBool:NO],
kFxPropertyKey_PreservesAlpha,
[NSNumber numberWithBool:NO],
kFxPropertyKey_PixelIndependent,
[NSNumber numberWithInt:0],
kFxPropertyKey_EquivalentSMPTEWipeCode,
nil];
}
Anything else I can fix or am I stuck with this behavior?
steve
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