I can't think of any other way to do it. You'll just have to test it out.

I found a program that can convert files into THP files, if that's what you need. The link is right here:
http://www.mediafire.com/download/talv6gm1al0l7mb/WiiflowTHPVideoConverter.rar

Also to get the youtube .mp4 file, just find an online converter

Weird, it worked the second time. Thanks.

So a little while ago i downloaded a program that converts .bin files(pictures taken in brawl) to .jpg pictures. The first two pictures i converted worked just fine, the third one doesn't work. Instead a popup window says:
JPEG error #58.
 
And the picture doesn't load. Any clue?