Major_Payne - 2:19 am on Oct 11, 2010 (gmt 0)
You said "cell". "Cell" means tables. Tables mean you are using outdated coding techniques for layouts. With that said, you can re-size the video or enlarge the web page. Can't tell you which is a better option as you gave nothing to work with.
As for positioning any element like the flash, use the CSS positioning properties.