Thank you JohnWilson for the reply. I looked at 2013 and I could not find link option under the insert tab. My intention to upgrade to 2013 was primarily to get away from linking the videos and have them embedded so that I don't have to relink when I move my presentation from one folder to another or to another computer. But now I am facing this loop lag which is very frustrating. Being a cardiologist I want beating heart images in the avi or mpeg format which keeps looping while I talk to the audience but the loop lag breaks the continuity of the beating heart phases. Is there any other solution to this issue?