If I use an Avisynth script to trim this video clip (I don't recall where it came from - it looks like a screen capture?), I end up with more frames than I started.
Dragging the video into VirtualDub lists the last frame as 715, dragging in the script, the last frame is 725.

Code:
directshowsource("720p.mpg")
trim(1,0)
http://www.mediafire.com/?al9z279fu6jv0dp