Kdenlive/Manual/Transitions/Affine
Affine Transition
Generates image rotation in 3D space, skew and distortion.
Provides keyframable animated affine transformations with dissolve functionality.
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To rotate the image add a keyframe and enter values for rotation. The units are 10ths of degrees. (e.g. 900 = 90 degree rotation).
To add a dissolve change the opacity to zero percent.