Transfer Quicktime (.mp4 or .mov) file via iTunes from laptop to the Replay Booth app. Replay Booth allows you to either bookmark (pre-set for 10 second clips but can be adjusted) or AB loop buttons that you can cut and add to playlists or e-mail out. You can telestrate live video play but it won't save to the clip.
Hudl downloads are already in the format. I did have an issue this week with a couple of schools downloads being corrupted with "a bad public atom" which would not open in Quicktime or Real but VLC didn't have a problem with it and the files also transferred to iPad and opened with no problem so its only a problem with certain players.
The hard part is converting the DVD's received into a usable format. Takes lots of time and space. The "dinosaurs" that want a DVD copied for them are going to have to start giving me a flash drive. TV's now are allowing you to plug and play direct so there is no need to burn DVD's to watch.
I purchased the AVS suite several years ago with Video Editor, Video Converter, and DVD Copy- I think it was like $36 or $39 online. Its clunky but gets the job done. I'm sure there are better, faster, easier to use. Its just what I'm used to.