It takes a lot of time and effort to produce a quality program. Also, you have to consider the time-frame in which you want the program produced. Video production is a lengthy process. It is not unusual for a program to take several months from the time it is initially conceptualized until the last videotape edit is made. So if you need a program in, say, three weeks, and you don't have a script and haven't thought about what shots you will need for a quality program, you may be out of luck.
Video takes time.
A needs assessment, in essence, determines why the educational videotape is required. Goals and objectives structure your plan of action. A goal is a general statement of what you hope the program will achieve. In any instructional environment, it's imperative to know as much about the learner the intended audience as possible. Since you're producing a video program, you may probably need to know if the audience has access to VCRs.