Here are some free video countdowns you could use at the beginning of movies you make. They are from the Internet Archive. They are MPEG 1 files, which should be able to be used in most video editing programs. Click the picture, and it will take you to the Internet Archive page for the countdown. If you need a different format, leave a comment.

Have to love Archive.Org. I love the old movie archives.
Hey! Yeah, the Internet Archive is rich with usable, public domain, or creative commons stuff. Thanks for checking out the site. Your Gamesecretary site seems pretty cool, too. I visited and will be back.