I have a video of my kid doing a back flip. With WMM, I want to make a video of him at regular speed, slow motion, and then sped up. The reg speed works fine. Then I slow it down and video image stops at the first slide, the sound continues briefly, but then stops. AFTER the slow motion part, I have the same video at 2x and it works fine. 

Does anyone have an comment on this?

Thanks,