transcoding format
Compressor provides a variety of transcoding formats to create files playable on a variety of media platforms—from Apple devices to Blu-ray discs to websites. Each of the built-in presets in the Presets pane uses a specific encoding format compatible with industry-standard platforms.
You can see which format a preset is based on by looking at the summary information at the top of the inspector.
Information about each available encoding format is provided in the Advanced adjustments chapter.