site_archiver@lists.apple.com Delivered-To: pro-apps-dev@lists.apple.com Hi Paul, steve On Jun 18, 2008, at 2:29 PM, Paul Schneider wrote: Hi Steve, - 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 Now I'm seeing: inputA: 703 x 468, pixelAspect = 0.790123 output: 703 x 468, pixelAspect = 0.888889 _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.ap... I understand about changes in size, pixel aspect and scale due to different rendering settings and have that handled. My question was directed more at the differing pixel aspects, which as you say could be a bug. I'm currently ignoring the input pixel aspect and just using the output pixel aspect for both images; this seems to be working OK for what I'm doing. Are there any cases, though, where the input and output pixel aspects would actually be different (and thus I'd get bitten)? 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!). 5. Change the canvas window background to one of the other options (i.e., checkerboard). 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? This email sent to site_archiver@lists.apple.com