To stream videos on a website could be done in different ways. If you would like to stream your own produced video, first you need to upload to your server or to some of the video sharing sites.

The popular video sharing sites that you could upload your video are:

1. YouTube

2. Google Video

3. MySpace

4. Yahoo Video.

5.  etc…

If there's an existing video from one of the video sharing sites, just pick the site of that particular video. Then, copy the file you need embedded for your blog or website. How to do that, just watch the video.