All you need to do to embed video into a post or page is to add the URL of the video into the content area.
Make sure that the URL is on its own line and not hyperlinked (clickable when viewing the post).
Consider this example post:
Yesterday we discovered a new way to relax at work!
Check out this cool video: http://www.youtube.com/watch?v=RHhqeK4fd3s Now there's no more office angst!! Ahhh Peace at last!
WordPress will automatically turn that link into a YouTube embed when the post/page is viewed
Can I Use Any URL With This?
Not by default, no. WordPress will only embed URLs matching an internal whitelist.
Okay, So What Sites Can I Embed From?
You can use all of these:
- YouTube (only public videos and playlists - "unlisted" and "private" videos will not embed)
- Vimeo
- DailyMotion
- blip.tv
- Flickr (both videos and images)
- Viddler
- Hulu
- Qik
- Revision3
- Scribd
- Photobucket
- PollDaddy
- WordPress.tv (only VideoPress-type videos for the time being)
- SmugMug (WordPress 3.0+)
- FunnyOrDie.com (WordPress 3.0+)
- Twitter (WordPress 3.4+)