Speed up video in Storyline?

Just wanted to say I was able to use Philip Deer's suggestion above to achieve a sped-up video for a portion of a software demonstration. I only wanted one 19 second segment sped up, since 19 seconds of navigating back to home is boring. I cut that 19 second part out of my overall demonstration in replay and saved it as it's own file. Then I published to PDF just that portion, inserted the video into the gif maker, sped it up so it went from 19 seconds to 5, saved the gif and put it back into my original replay video as the shortened 5-second version in the same place where I cut the original 19 seconds out. Once I finish the replay video I'll publish it and insert it as a single video into my Rise course, thereby having 1 video with only the one section sped up. It took me less than 5 minutes to do, and I'll definitely be using it again! Thanks Philip!