Ask HN: Best options for transcription?

I am looking to finally start getting into transcription. ( processing user webcam recorded .flv 's and getting text back of what they say)

Needless to say, its hard to navigate the sea of available options. I see adwords dominated by companies that offer 1$ a minute but that seems crazy high for what I am doing. Is there some software I can run on my own server (with less accuracy of course) that would cut costs significantly? Ideally, I would love to get below 25 cents a minute and also not have to rely on people as well.