The slide transition treats the entire image in each video track as a separate object, and moves them around before replacing one with the other.
This transition supports three types of slide styles:
The Open style slides the first video away, to reveal the second. The second image remains stationary.
In a Push Slide transition, the both video images move together. The first slides off to the left as the second slides on from the right, as if one was pushing the other out of the way. The illustration above shows a Push Slide transition.
A Swap Slide transition shows both cards pulling back halfway, the second moving in front of the first, and then both moving back to their original positions.
The slide transition splits the video horizontally into the number of specified bands and then applies the selected slide style. The bands move in alternate directions (if the top band is moving right, the next one down will move left).
Swap video tracks for this transition
By default this transition starts from the video in Video Track 1 and ends with the video in Video Track 2. Check this option to transition from Video Track 2 to Video Track 1.