Kdenlive/Manual/Project Menu/Reverse Clip
Reverse Clip
This menu item is available from the Clip Jobs menu that appears when you right click on a clip in the project tree or from under the project menu when a clip is selected in the project tree.
This Clip Job reverses the video footage of the clip.
From version 0.9.6.
According to mantis 2933 "some clips will only produce white image and error on reverse."