The video explained why Wikileaks has an interest in Bitcoin. It did not explain why bitcoin has value, nor did it explain what gives it value other than fluff (eg. Freedom of expression, how your money is used, a reward).

You need to go into more detail on what gives bitcoin its value as a cryptocurrency. Is it demand, anonymity, easy of access, decentralisation? Also you need to address the effects on Bitcoin's value as an intangible currency, I would say compare a fiat currency with bitcoin, and explain the differences and what give each of them their specific value.