&rolledit Ok, I'm toast at this point, going to call it.
I almost made a video editor in a week :P

No UI for adding/removing clips for the timeline unfortunately, but it takes a list of filepaths from the command line to load into the editor, and it can manage to create a valid mp4 out of two big_buck_bunny.mov files stuck together.

I've got a lot of video-editor pieces, but there's some lurking pts/dts bugs kicking around that stop this from being usefully general purpose.

It's jam quality code, can't claim it's worth using for anything other than a quick stare, but I had a lot of fun working on it.
https://github.com/colrdavidson/rolledit