Rev NS001b004 Introduction
page 9
Dolby Digital Surround Sound
MPEG-2 video can include Dolby Digital Surround Sound. Dolby
Digital Surround Sound incorporates six discrete digital audio channels
to provide a full immersion surround sound system similar to a movie
theatre. The six channels include left and right front, left and right rear,
center, and sub woofer. NetStream 2000TV outputs the six discrete
channels of Dolby Digital audio using the S/PDIF connection and your
own Dolby Digital surround sound system.
Dolby Pro Logic Surround Sound
Dolby Pro Logic Surround Sound uses the standard analog stereo signal
to multiplex surround sound information, and requires a Dolby Pro
Logic amplifier/decoder to decode the signal. Dolby Pro Logic Surround
Sound uses the same audio signals for both the front and rear speakers on
the left and right channels. NetStream 2000TV converts the six channels
of Dolby Digital Surround Sound into Dolby Pro Logic Surround Sound,
for a surround sound experience with standard 1/8” (3.5mm) stereo
connectors and a Dolby Pro Logic amplifier with surround sound
speakers. Omitting the Dolby Pro Logic amplifier results in a standard
analog stereo experience.
Supported File Formats
NetStream 2000TV supports the following MPEG file formats:
MPG Files
MPG is the extension used for files with MPEG-2 or MPEG-1
compressed full-motion video. For MPEG-2, the video resolution is 720
x 480 at 30 frames per second (fps) with 16.8 million colors (full
CCIR601). For MPEG-1, the video resolution is 16.8 million colors at
352 x 240, shown at 24, 25, or 30 fps. Both MPEG-2 and MPEG-1 files
may include MPEG-compressed audio (16-bit, 48kHz stereo sound).
NetStream 2000TV also supports the Half-D1 format of MPEG-2.
DAT Files (Video CD 1.0 and 2.0)
DAT is the extension for Video CD or Karaoke CD files. NetStream
2000TV can play both Video CD and Karaoke CD DAT files.
VBS and ABS Files
VBS and ABS are file extensions used for some MPEG-encoded video-
only and audio-only bit stream files.
Transport and Program Streams
NetStream 2000TV supports MPEG-2 files on both transport and
program stream formats. By selecting program IDs (PIDs) from a
transport stream, you can choose different audio or video streams.
Note 1.
Transport streams are only supported through the DirectShow API.
