How does it work? Are there any easily comprehended way to write plug-ins and add-ons?
What can you do with plug-ins and add-ons? Are they purely image and transition effects or could you,as an example, write a plugin that exports EDL-lists?
How do you install plug-ins and add-ons?
Links:
[1] http://kdenlive.org/forum/contribution-forums/plug-ins-and-add-ons-development