Be aware that since version 1.8 you don’t need to manually create any Shortcodes!
Here comes a normal video embed and this is all it takes [vimeo id="993998"] Assuming you have set ‘normal’. Else you needed to set the mode as well.
Look at this, its a thumbnail and its floating rights, isn’t that awesome?
[youtube id="vrXgLhkv21Y" mode="thumbnail" align="right"]
This is how it looks like for YouTube, Dailymotion, Vimeo and Blip.tv. They provide the functionality to load a thumbnail image for videos from their servers.
And at last, a normal one with maximal width 450px floating left surrounded by text.
[youtube id="vrXgLhkv21Y" mode="normal" maxw="400" align="left"] Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc, quis gravida magna mi a libero.