Vela CineCast 2000-0422, Installation And User Manual

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Chapter 1 — Getting Started 5
Features and Characteristics
• Primary audio decoder supports two-channel (left/right) MPEG-1 layers I
and II at 32kHz, 44.1kHz, and 48kHz.
• The Model 2000-0422 secondary audio decoder supports two-channel
MPEG-1 (layers I and II).
• The secondary audio decoder of the enhanced Model 2000-0422-1 (“Dash-
1”) supports the following:
Two-channel MPEG-1 layers I and II.
MPEG-1 layer III (MP3), when played as an audio elementary stream.
MPEG-2 AAC-ISO/IEC 13818-7 Advanced Audio Coding (AAC)
Low-Complexity Profile (LC) Audio Data Transport Stream (ADTS),
two-channel downmixed.
• 20-bit audio sample resolution maintained through the system (MPEG audio
is only 16-bit).
• Analog audio uses 24-bit DACs.
• AES/EBU digital audio output and SDI embedded audio always at 48kHz
sampling rate; sample rate converters convert other rates to 48kHz.
• Future support for two-channel Dolby* Digital (AC-3) (5.1 downmixed to
two-channel.) Not currently supported. Contact Vela Customer Service for
more information.
Playback Modes
• Playlist: Allows the user to create, modify and/or play back a list of MPEG
video files.
• “Back-to-back with no black” mode supported (stream concatenation).
• Pre-black value set-up: 0-255 frames.
• Post-black value set-up: 0-255 frames.
• Frame count: Number of displayed frames using vertical sync as counter.
• Pause on under-run modes: This determines what happens to a playback when
the host system can not keep up with the demand of data. Available modes:
1. Freeze Video: Pause video, start playback when data flow is restored.
2. Go To Black: When the decoder runs out of data in the SDRAM buffer,
playback will terminate and an error code will be returned to the host.
* Dolby is a trademark of Dolby Laboratories.