.....use that Search button in the upper part of this page. It will yield amazing results if you're not lazy.

Youtube can also answer this question

Put relevant title, keyword, tag, description ect. Share videos on you social profiles and invite your friends to watch them, the views and likes dislikes also affect video ranking.

There is lots of good information you can find by searching the main warrior forum or you could join the high voltage video forum. http://www.warriorforum.com/high-voltage-video-forum/
It has loads of info on video marketing - SEO, conversions, making videos etc.

If you're asking about optimization only and not marketing then do this:

1. Make sure your video title, tags, descriptions and other settings are relevant to what you want to promote.

2. Make sure you put sources in the description area for the viewer to know more about the product/service/business.

3. You can actually optimize videos by editing it properly and make sure it presents a clear picture (marketing-wise). Present the product properly and then have a closing at the end.

Have fun optimizing!

Backlinks from Fiverr are still effective when it comes to ranking your videos. Start with social bookmarks (high quilaity) then move onto bulk backlinks.

A good way to help rank your videos, is when you upload your video to youtube, up load it to a bunch of other video sharing sites as well. Google will think your video is populat when it sees it sprayed across multiple share sites.

A good program to use for this is Tube Mogul, it will share your video across multiple sites for you at the same time.

Hope this helped