I haven't seen any of the newer bow making videos but bought most of the ones produced around 10 years ago. I found that all of these videos would give you a general idea of how a bow is made but leave out some of the crucial information you actually need to complete the process.
I never saw a video that told the viewer how to handle the normal problems one encounters when working a stave into a bow. This information would include things like how to correct hinges, dogleg or propeller twist, lining up the string with the handle and such.
All the videos I bought were entertaining but wouldn't teach you how to make a bow start to finish.
