Re: FCE: pixel aspect changing based on canvas window background?
Re: FCE: pixel aspect changing based on canvas window background?
- Subject: Re: FCE: pixel aspect changing based on canvas window background?
- From: Paul Schneider <email@hidden>
- Date: Wed, 18 Jun 2008 17:29:35 -0400
Hi Steve,
When you switch your background to anything other than black, Final
Cut enters its legacy "Non-RT" display path. The render settings in
this path are quite different. There is some documentation for this
in the FxPlug SDK, in a document called "Rendering FxPlug Effects In
Final Cut.pdf". Stills are handled differently than video in this path.
The mismatched aspect ratios for the input and output seems to be a
bug; I'll check it out.
Let me know if the document doesn't answer your questions, or if it
leaves you with more questions than answers (certainly possible!).
- Paul
On Jun 17, 2008, at 5:29 PM, Steve Christensen wrote:
Here's what I'm doing:
1. Launch FCE with no project (looks like it defaults to DV NTSC).
2. Drag a DV movie to the timeline.
3. Apply my filter to the DV clip (filter is using FxBitmaps).
4. Make sure that the viewer window background is set to black.
I'm seeing:
inputA: 720 x 240, pixelAspect = 0.444444
output: 720 x 240, pixelAspect = 0.444444
5. Change the canvas window background to one of the other options
(i.e., checkerboard).
Now I'm seeing:
inputA: 703 x 468, pixelAspect = 0.790123
output: 703 x 468, pixelAspect = 0.888889
Is there a reason for the change in pixel aspect, and in particular
seeing different aspects for the input and output images?
I see slightly different behavior for still images. While the pixel
aspect changes between a black background and any of the others, the
input and output pixel aspects are the same. Why the difference
between still images and video?
steve
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