I am exporting a 21 second movie as an SWF file and it is rendering only about 13 seconds of it.
The file works (I am importing it into a web page) it is just not complete.
When rendered as a .mov file the whole thing renders.
Does anyone know how I can get AE to render the whole thing?
Mac OSX 10.6.7 / After Effects CS5
Make sure your work area is set to the length of the comosition.
Aside from what Rick said, your workflow doesn't make sense. If the movie is that long, render it as FLV and embedd it using one of the million Flash video player skins and code snippets you can find on the web. Nobody wants to visit websites that dump large self-contained SWFs on users and cause long load times...