User`s manual

Alcorn McBride Binloop User’s Manual Page 85
Media Files
The reproducer cards within the Binloop support a variety of
common industry-standard audio formats, as well as the popular
MPEG-2 video format. To play properly in the Binloop, however,
the files loaded onto the Compact Flash cards must adhere to
some specific encoding and file-naming requirements. This
section provides detailed information on those requirements so
that you can successfully create and load content into the
Binloop.
File Types
The possibilities of storing audio and video content in a digital file
format are nearly endless, and it’s impossible for the Binloop to
support everything. Instead, the Binloop supports the specific
file types which are listed below:
• MPEG2 Program Stream (Video and Audio)
• Windows PCM - WAV (Audio Only)
• Apple AIFF (Audio Only)
• Raw PCM (Audio Only)
The audio-only formats are easy to explain. They are simply
audio files that are created using the associated uncompressed
audio format. These files can hold up to 2 channels of audio
information (Stereo), and can have a variety of other parameters
which are discussed later in the Audio Formats portion of this
section.
An MPEG2 Program Stream is a little more involved, but is
necessary to play video in the Binloop. A Program Stream
contains both a video and audio that are intended to play
simultaneously. It can do this because both the Video track
(Video Elementary Stream) and Audio track (Audio Elementary
Stream) are combined (multiplexed) into single file. The Video
portion of the stream must be a MPEG2 video that follows the
specifications listed later in Video Formats portion of this
section. The Audio stream contained within the program stream
can be one of several formats, including MPEG-1 Layer 2 audio
or Dolby Digital AC3. These types are covered in more detail
later in Audio Formats portion of this section.