Important All media you use on your sites should be your own or in “fair public use,” usually under Creative Commons (CC) public licence. You should always credit the author when asked to do so.
Important Test your pages on multiple computers and browsers to make sure the embedded media works.
Common Downloadable Video Sources
A cellphone video is a good option, or the Moving Iamge Archive has Creative Commons video that you can download, which conveniently show metadata like size and filetype. Here’s an example about Pluto using Firefox:
Neat-O Hovering your cursor over the download link will show you the file’s size. Most videos give you the two required options you need: H.264 (
.mp4) and an open-source type (