4.2

A transcoding format that converts your source media file.
Choose one of the following formats based on the intended
playback method: AIFF, Dolby Digital Professional, DV Stream,
H.264 for Apple Devices (which contains settings for use with
iPad, iPhone, iPod, and Apple TV), Image Sequence (which
supports TIFF and TARGA images), MPEG-1, MPEG-2,
MPEG-4, QuickTime Movie, or QuickTime Export Components.
Frame size, pixel aspect ratio, and cropping and padding
controls that allow you to crop the image and adjust its frame
size.
Video and audio effects that modify different characteristics of
your video or audio to maximize the quality of the output file.
Storage aspect ratio (SAR) The ratio between an image’s width
and height when it is stored. Storage aspect ratio can differ from
display aspect ratio (DAR) resulting in a file that must be stretched
or squeezed during playback to appear correct. This disparity can
allow a camera format limited to 4:3 recording to successfully
record a widescreen image by “squeezing” the image during
recording. If the image is unsqueezed during playback it will
display correctly in its widescreen aspect ratio. This is called an
anamorphic image.
Source media file In Compressor, the original media file to be
converted to a new file format. One source file is required for
each job.
Transcoding The process of converting files from their original
format to a different format. Closely related terms include
compression, which specifically refers to data reduction, and
encoding, a term that is essentially synonymous with transcoding,
but doesn’t emphasize the conversion aspect.