I would check first if you are delivering a tangible product. Software-only or service companies have a hard time crowdfunding, as it's hard to find interesting rewards for non-tangible products.

I would then focus on creating a strong community behind the project. This is where investing resources on Facebook makes sense.

If you have more than 600 Facebook fans, I would then try to find an angle where you can tell a good story with emotion about what you are doing. Is there an overarching cause? Who are the people behind the project? What's the impact. Those would be good points to tell in the video.

Since you are in beta, I would present it as such : "We've already done so much, built a prototype, but we are a startup with limited resources, and need your contribution to get us to first version." Offering early access, user privileges, access to the developer edition are all good ideas for rewards. You can also have a "Credits" section on your product, everyone appreciate having their name on a public website.