fireplug,
to post a film, youll need to host it on a webserver. There are a few free hosting sites out there. For small filesizes (pictures and short films)
http://www.picturehangar.com would be an option. Otherwise just do a google search on free webhosting.
After uploading it, you can insert the URL to your film in the post.
If its a film about a bug or any issues with another player, youre better off just emailing the film to Skuzzy (support @ hitechcreations.com). They dont like this kind of things discussed on the BB.