I used to work with folk that had firewire connected camcorders. Over that time we learned that we can't count on the apps to work directly with any model camcorder so what to do?

Split up the process to 2 steps.
1. Download of the media from the camcorder to the PC/Apple.
2. Edit in said apps.

In your case you have the issue of video encoding to solve as well. I've used HANDBRAKE, VLC PLAYER to do such work. And it's called TRANSCODING THE VIDEO (words in all caps are so you can research, not shouting at you.)

If you try this before you go live, you won't be so surprised.