Introduction to the Basic Encoder
Page 1-4
Reference Guide: evolution 5000 E5780 and E5782 Encoder
ST.RE.E10135.4
Table 1.2: Equipment Model Descriptions
Model Number
Marketing Code
Description
M2/ENC/E5780
2U MPEG-2 Encoder with 4:2:0 video encoding mode.
Available with the Reflex
1
option.
E5780 SD/HD
Encoder
M2/ENC/E5780/48V
As M2/ENC/E5780 but fed from –48 Vdc supply.
M2/ENC/E5782
2U MPEG-2 Encoder with 4:2:0/4:2:2 video encoding
mode. Available with the Reflex
E5782 SD/HD
Encoder
M2/ENC/E5782/48V
As M2/ENC/E5782 but fed from –48 Vdc supply.
1.2
Summary of Features
1.2.1 Video
Encoding
MPEG-2 Encoding
The Encoder processes a broadcast-standard video signal into a compressed encoded
bitstream in accordance with:
•
The MPEG-2Main profile @ Main level (MP@ML) specification
(ISO/IEC 13818)
•
The MPEG-2 4:2:2
2
profile @ Main Level (422P@ML) specification (ISO/IEC 13818)
•
The MPEG-2 levels Main profile @ High Level (MP@HL) and 422P@HL
Multi-pass Encoding
Encoders having software option M2/ESO2/HD-MPASS enabled are capable of multi-pass
encoding.
An improvement in performance is achieved by using additional video compression hardware
at the front-end of the video encoder. A pre-processor analyses the incoming video signal
'ahead of time'. This enables important statistical parameters to be derived about the video
signal before the 'final' encoding takes place. This additional analysis is used to generate
more accurate bitrate predictions and so further increase the efficiency gains achieved by
Reflex.
The video signal in a Multi-pass Encoder is analysed and compressed at several
pre-processing stages before the actual encoding takes place.
Video Encoding Modes
video encoding modes can be selected. The coding mode selected
affects the compression techniques, encoder delay and rate control.
Video Inputs
The standard video inputs are:
•
SDI
- Serial Digital Interface - ITU-R BT.656-4, part 3 (D1 serial format) – SMPTE 259
(component only)
•
Composite Analogue
(PAL/NTSC)
•
HD SDI
– High definition serial digital interface (SMPTE 292M)
1
Reflex is only available when software option M2/ESO2/HDVBR is purchased.
2
4:2:2 is only available in HD in the E5782 Encoder and in SD when software option M2/ESO2/422 is purchased.
Содержание E5780
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