Chapter 2 Introduction
Video Encoding Features
© 2012 Harmonic Inc.
12
Electra 1000, Version 3.0, Rev M
2.3
Video Encoding Features
Table 2-2 describes video encoding features supported by the encoder.
a.
HE AAC, also known as aacPlus, was developed by Dolby Germany. Dolby Digital,
Dolby Digital Plus, aacPlus, and Dolby E are trademarks of Dolby Laboratories.
Trademarks of Coding Technologies GmbH are the property of Coding
Technologies GmbH. All rights reserved.
Table 2-2: Video Encoding Features
Feature
Support
Input format
Serial digital or analog composite
Video format
Serial digital: 525-lines or 625-lines
Analog composite: NTSC, PAL, and PAL-M
Encoding mode
MPEG-2 MP@ML 4:2:0 encoding
Repeat field
detection
Supported
Horizontal
resolutions
720, 704, 640, 544, 528, 480, 352
Advanced encoding
Alternate scan mode, zig-zag mode, flexible GOP structure,
4:3 and 16:9 aspect ratio
Video preprocessing
ENRGY™ Integrated Noise Reduction System
Horizontal filter, border processing, nonlinear spatial filter,
impulse noise reduction, motion compensated temporal low
pass filter (MCTF), luma and chroma filter, and edge-adaptive
texture filter
PSIP tables spooling
Closed captioning
Line 21
ATSC Line 21 CEA-608
ITU-R BO.1294
DVS-157 (GI CC)
SCTE 20 (True DVS-157)
SAUD (SA CC)
DMV1 (Tandberg CC)
DVS-157+SAUD
Extend Data Services (XDS)
(525-line VBI) 608 to 708 conversion
VBR
Support for variable bit rate encoding
Capped VBR (open loop)
Accommodates poor
quality video sources
To compensate for poor analog sources, the encoder
preprocesses the area around the line sync, slightly expanding
both the front and back porches to enhance timing recovery.
As a result, the encoder slightly reduces the line length. When
this capability is engaged, all alarm reporting is disabled.