Thank you!

The problem was that I was referencing the ffmpeg.so file by it's full file location, ie, "extension=/usr/lib/php4/ffmpeg.so" ... and it was making me crazy because no matter where I put it in the php.ini file, it would not show up.

Then I changed it to "extension=ffmpeg.so" and it's in the phpinfo file now and the uploads are working.

Thank you again!