per /u/accessaces who made me take dictation rather than logging in herself:
If you are willing to use a Mac, Screenflow is very usable. They do not have a Windows version. Their keyboard shortcuts are extensive and fully user configurable. Once you realize where the editing area is, ie. in the scroll zone, editing is a piece of cake. I had a friend help me set up a couple of VoiceOver hot spots and label a few of the unlabeled graphics but I don't even depend on those any more. I wish TechSmith would create a similar Windows product but they only offer one product dual platform.
If you have it or can afford it then Final Cut Pro is an option as well. I don't use it but a blind friend does.
If you are interested in adding captions to your video I find the Cadet software from WGBH works extraordinarily well. It works best with NVDA but I have already reported the few JAWS bugs so they might be fixing them now. What I have been doing is getting youtube to autogenerate captions and then cleaning up the captions after the fact.
$1, all of the filming, editing and captions done exclusively by blind people. Some episodes were edited by me using ScreenFlow and some using Final Cut Pro by a friend who is also blind.