I'm not familiar with all the programs you've mentioned, but I can tell you what I have found to be successful so far (I'm new to Chromebook).
FlixExpress - for cool opens and closes to videos. Mark Butts in our group here put me on to it.
*Screencastify or Screencast-o-matic for screen capture.
These can also be used to make videos from presentation software (Google Docs, etc.)
VideoRobot - for various kinds of videos (got it on a launch special)
*ClipChamp is a new (in Beta) web-based video editor. Looks good so far.
*apps available for chromebook/Chrome browser in the Google Chrome store.
Hope these tips help. - Magicman