2010/7/29 Dan Dennedy <d...@dennedy.org>: > On Thu, Jul 29, 2010 at 11:46 AM, Simon Eugster <simon...@gmail.com> wrote: >> Dear friends, >> >> I've got a question about how keyframing is implemented at the moment. >> Is it such that each effect has to do support keyframing by itself? Or >> what is this working like at the moment? > > Each MLT service may choose to do itself with the help of mlt_geometry. > >> The reason why I'm asking is because I'm intending to write a 3-way >> color corrector, a better one that also supports CDLs[1] (at least >> output), and I thought keyframing would be neat to have there as well. >> And I thought it would be a loss of work implementing the same thing >> over and over again. Because keyframing is mainly >> * changing a value between two key frames continuously: >> * linear >> * non-linear (smooth curve) (not there yet, right?) >> We've got keyframing in Saturat0r, Brightness, Volume, Composite, and >> perhaps others. It is the same all time: Changing a value linearly. > > mlt_geometry only does linear, and a patch to do anything more will be > rejected because.. > >> Smooth curves would be really cool to have, especially for Composite. > > it is already high on my MLT todo list to add property animation to > mlt_properties. > >> There are even two variables that can be smoothed out: Position (e.g. >> a clip driving around on the screen in a circle) and speed (which is >> just constant at the moment, but might be smoothed out, like a >> stopping car). > > My plan calls for a function of value over time. Motion paths are > currently out-of-scope for now. > >> What is the current status? > > still in planning. I am currently working on the merging of my > parallel-consumer branch. I hope to get property animation done by the > end of the year. > >> Simon >> >> [1] http://en.wikipedia.org/wiki/ASC_CDL
Sounds good! Definitively looking forward to it. Thanks for the information. Simon ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Kdenlive-devel mailing list Kdenlive-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kdenlive-devel
