Videos should be uploaded to YouTube, Vimeo, Dailymotion, Google Drive, or any other hosting service of your choice, and added to the application as a link. Do not block your video behind a password — instead, you can set the video privacy to unlisted or equivalent settings, so that the video is only accessible to those with the link. Video files should be in .mp4 format.
Other materials can be uploaded to a personal site, Google Drive, or another hosting service. Make sure they are also accessible to anyone with the link.