4.2

Delivery partner A content aggregator or encoding house
certified by the iTunes Store and authorized to submit iTunes
Store packages to the store for sale. These partners ensure your
content is properly configured and formatted to meet the stringent
submission requirements of the iTunes Store. They can also
provide billing and support services after your video becomes
available for sale.
Destination In Compressor, a group of one or more transcode
settings plus a post-transcoding action. If you use a destination to
transcode a file, one or more new files are created to the setting’s
specifications, and then an action is automatically performed on
the transcoded file. For example, the Publish to Facebook
destination outputs the source file using the HD 720p QuickTime
setting, creating a file optimized for viewing on the web and on
mobile devices such as iPad and iPhone. After the file is
processed, the Publishing to Facebook action automatically posts
the output file to your Facebook account.
Display aspect ratio The ratio between an image’s width and
height. For example, Standard-definition (SD) video typically has
an aspect ratio of 4:3. High-definition (HD) video typically has an
aspect ratio of 16:9. If SD video is played on an HD display, the
image is either stretched or appended with black borders on left
and right sides (pillarboxes). If HD video is played on an SD
display, the image will be squeezed or black borders will appear
at the top and bottom (letterboxes).
Distributed processing A method of transcoding that
accelerates processing of Compressor batches by distributing the
work among multiple computer processors. A system can
distribute parts of a batch to multiple instances of the Compressor