First thing this is application compatibilty forum so you need to post this problem in respective forum.
in Edit menu there is an option for Speed you can select speed 0.125x, 0.25x, 0.5x, 1x, 2x, 4x, 8x, ....
this will be visible after adding the video.
I hope this will solve your problem
मनोज कुमार जांगिड skype - jangid