Once your video is finalized with music you'll need it to export it to a movie file that can be uploaded to the web. Most editing software packages will have a feature to export to web, many will even have one specifically for YouTube or Vimeo.

It's a good idea to use these presets as they will be small in size, usually less than 60 MB, and easy to upload to the web. A good standard is to export with an HD resolution 1280 x 720, assuming the footage is in HD. Exporting uncompressed footage can get up to 1GB per minute of footage. You can also use Quicktime to create exports of your video in popular formats.