PowerPoint has some very good video features, such as the ability to play multiple video formats, embed videos into the slide deck file, visually stylize the video and export video from the PowerPoint.

It is the export video feature that is being used for this tutorial.
Here are three videos that are inserted into PowerPoint 2013.

Each video is set to auto play, one after the other.

Then, go to FILE.

EXPORT >> CREATE A VIDEO >> CREATE VIDEO

The result is a single video file that was previously 3 separate videos.

– Troy @ TLC