From: Mathias F. <mat...@kn...> - 2009-05-28 08:00:49
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Hi there. As one of the kdenlive users that focus more on the functionality of the program rather than the looks of its icon, I wonder what the status of the Pan and Zoom-effect is? ;) If i recall correctly it is a matter of implementing keyframing in MLT, but the effect is present in my 0.7.3-version, however it seems to be non-functional. Id' be happy to be a test pilot for this and report bugs and such if there is a beta or alpha version available, but since i'm not much of a developer i cannot contribute code in any extent. Kindest regards, Mathias |
From: Dan D. <da...@de...> - 2009-05-28 17:14:27
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On Thu, May 28, 2009 at 12:00 AM, Mathias Friman <mat...@kn...> wrote: > Hi there. > > As one of the kdenlive users that focus more on the > functionality of the program rather than the looks > of its icon, I wonder what the status of the Pan and > Zoom-effect is? ;) That status is that it is what it is. > If i recall correctly it is a matter of implementing > keyframing in MLT, but the effect is present in my No, each effect can implement keyframing on its own. There is a plan to make keyframing more generic and available as a service by the _framework_ to make it easier to implement a much more comprehensive keyframing. > 0.7.3-version, however it seems to be non-functional. The static effect is functional. I intentionally made it static to prevent complaints about the quality of animation. To get *smooth* pan and zoom requires sub-pixel positioning and interpolation. I have dabbled around with using Qt image library to do this, and I got smooth zoom working in a crude experiment, but smooth pan required some scaling tricks with unsatisfactory performance. So, this is still in a research phase. OTOH, for more aggressive pan operations, you may find the lack of sub-pixel position acceptable, in which case, I refer you to a panorama screencast tutorial on kdenlive.org. There have been simply too much other higher priority things and no one else working on it. However, it is rather high on my list because I know how basic and desirable it is to do smooth pan/zoom on photos, and people including myself have lots of photos. However, bugs and a better deinterlacer are also high priority with high visibility. Then, I have my own low-visibility, very high priority task well: reduce the amount of YUV/RGB conversions. > Id' be happy to be a test pilot for this and report > bugs and such if there is a beta or alpha version > available, but since i'm not much of a developer > i cannot contribute code in any extent. Is there an open source app that does this well that I should look at (besides dvdslideshow, which is a huge wad of unreadable shell script driving imagemagick)? If you can at least point to the relevant part of the code in its source repo, then it will be a big help. -- +-DRD-+ |