I am using version 0.8.15
I have an mkv file which has been changed to a mirror image in the left screen.
In the right screen is a 3GP file taken with a Blackberry Torch.
Both screens have been synchronized. When I use the icon to save both videos to a composite video, only the 3GP file is visible in the composite video. The left hand side of the video is a black rectangle.
I expected both videos to be visible.