This is a question regarding Flash running in the standalone player, so anyone who would be so kind as to take a look will actually need to download these files to your local machine and run them in the player, rather than browsing to them on the web:
http://www.connectpositronic.com/flashtest/test_small_generic.swf
http://www.connectpositronic.com/flashtest/20051210-w50s_56K.flv
If you put these two files in the same directory and run the SWF in Flash player, you’ll see that the movie automatically plays in fullscreen mode, and that a very tiny video has been expanded as such. But if you then exit fullscreen, you’ll see that in actuality, the FLVPlayback running the FLV is only a small part of a much larger movie file, as demonstrated by the addition of a background color and a couple of shapes I placed alongside the playback component.
So in fullscreen mode, why does the player expand just the FLVPlayback component to fullscreen, rather than the entire movie file? This is the ActionScript I’m running in frame 1 to accomplish the auto-fullscreen effect:
fscommand("allowscale", "true");
fscommand("fullscreen", "true");
Note, however, that the same strange behavior happens when manually switching to fullscreen with the Flash player, not just when it’s executed by this ActionScript.