Encoding and Packaging Overview
Creating content for the JMP 9600 is done in three stages: encoding, wrapping and
packaging. The Extron JPEG 200 Encoder Software performs these tasks automatically and
internally (see figure 78). This process is provided for reference only.
a.wav
J2C
Frame
J2C
Frame ...J2C
Frame
Image
Frame
Image
Frame ...Image
Frame
JPEG 2000
Compressor
Encoding
MXF Wrap
Wrapping
JPEG 2000 Encoding Software
Packaging
a.mxf
DCP
Packaging
v.mxf
a.mxf
v.mxf
Asset
Map
Composite
Playlist
Packing
List
MXF Wrap
Figure 78. JPEG 2000 Encoding Software
• Encoding — Each frame of source video is compressed by passing the raw pixel data
through a JPEG 2000 compressor. The compressor creates a stream of JPEG-2000-coded
frames. The parameters applied to the encoder affect the compression level and quality
of the image.
The source audio is encoded using pulse code modulation (PCM).
• Wrapping — The individual compressed video frames are combined into a single track
le using the Material Exchange Format (MXF). The audio is converted into a separate
MXF track le.
NOTE: The compressed audio and video data are maintained in separate MXF les.
• Packaging — Additional control files, describing the format of and relationship
between the audio and video files are generated. The resulting files are collectively
known as a Digital Cinema Package (DCP) as described in the DCI specification.

Video track files

A video track le is the smallest unit of video in the system. It is an MXF container that has
all the compressed video data and associated meta-information necessary to decode and
render a piece of video (see, for example, v.mxf in figure 78).
The JMP 9600 supports frame-wrapped video track les that conform to SMPTE 377M-2004
and SMPTE 422M 2006.

Audio track files

An audio track le is the smallest unit of audio in the system. It is an MXF container that has
all the PCM-encoded, uncompressed audio data and associated meta-information necessary
to recreate a piece of audio (see, for example, a.mxf in figure 78).
The JMP 9600 supports frame-wrapped audio track les that conform to SMPTE 377M-2004
and SMPTE 382M-2007.

Reels

In the movie industry, it is a common practice to split a feature onto several film reels for
distribution. This concept is supported digitally by splitting a feature into several separate
files. In the digital realm, a reel is a track file (see above) that contains either video content
or audio content.
JMP 9600 Media Player • Detailed System Interaction 97