Recording a film, regardless of purpose, is one thing. Editing it, polishing it and producing it is quite another. The kind of finished product that you see on your film or television screen is very different from the raw footage that was recorded on the day. Someone has to decide what goes in, and what ends up on the cutting room floor. A good editor knows instinctively what's relevant and what isn't. They'll also be skilled at digital manipulation to make sure it suits the tone and the purpose of whatever it was recorded for.
Those sorts of skills take years to hone and perfect. You'll need a bachelor's degree, mastery of Photoshop and Adobe Illustrator and dozens of other products. Deadlines in this world are also short and sharp. If something is recorded during the night and needs to air tomorrow morning, forget about going to bed! You'll be well rewarded for your work, though.