[Chad Treanor]

It sounds like you’re composition time base (Frames Per Second) is not being matched in your render settings. For instance, if you’re animating at 24p and then export a 60 fps video file you’re effectively speeding it up twice as fast.

Try setting your work area to just a second or two of your program and exporting it out as a test to see if you can match the frame rates. If that test is a success then move forward with exporting the whole video.

Hope this helps!
-Chad