Reel Bean from JS8 Media is a powerful video converter that has features usually reserved for high end (and extremely expensive) pro application.
Most of Reel Bean’s features are available free of charge, but you can activate the “extra-powerful” features in the app for only $15.
Some of Reel Bean’s features include:
Converts videos to many formats ( iPod, QuickTime, MPEG4, H.264, AVI, etc. )
Play over 50 formats of video and audio.
Extract individual video and audio tracks into new files.
Scene selection drawer for all video types.
Adjustable video transparency controller.
Add audio tracks to videos.
Save video frames as images.
Change playback speed.
Auto start movies from last point played when re-opening.
Display video info panels.
Add annotations to videos.
Play streaming video.
This is a very impressive application that you can download here.