Want proof that anything that can be done on the desktop can be done in your web browser?

YouTube has just announced its brand-spanking new online video editor–allowing anyone to make simple edits and improvements to their uploaded videos.

You’ll find it located inside of TestTube–how cute–because it’s a little rough around the edges, but the functionality includes:

• Combine multiple videos you’ve uploaded to create a new longer video
• Trim the beginning and/or ending of your videos
• Add soundtracks from our AudioSwap library of tens of thousands of songs
• Create new videos without worrying about file formats and publish them to YouTube with one click — no upload necessary

OK, so maybe not quite as sophisticated as Adobe Premier or iMovie, but I suspect the above features represent about 80% of most video editing needs.

I could go on, but this guy will explain it all to you in a very patronizing easy-to-understand way: