Compressor

Gelardin's premiere encoding tool for audio and video. Only necessary for specific encoding needs. For the most common exporting options, such as encoding for DVD or for Youtube, export directly from iMovie or Final Cut Pro. 

Pros:

• Extremely customizable export-settings.
• Elegantly simple drag & drop system.
• Does not take long to learn.

Cons:

• Requires an understanding of what video encoding is all about.
• Video encoding can be very time-consuming.

Help:

• Apple Support - getting started, user's manual, troubleshooting.
• Youtube Tutorial by scctv - 3rd party tutorial.