I've been experimenting with the new Videoloupe Mac App and I've been loving it. It's a versatile tool for doing all kinds of things with stand alone videos. I've been primarily using it for extracting stills from videos & extracting small bits of videos from clips but there's SO much more to it.
Here's a brief overview of how I've been using it in these early days.
You can read more about the tons of features at: