Have you already viewed a video that is not synchronized with the audio? It seems that the sound is a little late or slightly ahead of the video (it depends on your film). With Audio Video Synchronizer, you can remedy this problem by aligning the images perfectly with the soundtrack. You can create synchronization points and the program will automatically calculate the start time and the end time from these points. A preview option lets you make sure everything is well synchronized; otherwise, you can always start over. Audio Video Synchronizer supports the following video formats: AVI, WMV, MPG, MKV, DivX, etc.