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  5. 2. Dual channel HD encoder with low delay LOW DELAY

2. Dual channel HD encoder with low delay LOW DELAY

Main characteristic

  • Encoder from HD / SD SDI or CVBS to MPEG-4 AVC or MPEG2. 
  • Encoding delay-80msec. 
  • The output IP can be obtained up to 4 programs with different resolutions. For example: two programs with HD resolution and their clones with lower resolution (for example, 320×240 resolution for reception on mobile devices). 
  • Multiplexed stream output by ASI. 
  • Parallel IP output with the ability to broadcast 4 different streams to 4 different addresses for IPTV broadcasting. 
  • Built-in program overlay titles and graphics on video with HDMI input. 
  • Program Title Master titles included. 
  • The ability to work in the "transcoding MPEG2 to MPEG4" and Vice versa. 
  • Ability to work in the mode of 1 video + 4 sound. 
  • Housing-1U, 19″.
  • COD-2xHDSDI-MP4/2-M25 (LOW DELAY).

Purpose

The encoder is designed to convert HD / SD SDI and CVBS signals into an MPEG-4 /AVC(MPEG-4 Part 10) signal that complies with the ITU-T H. 264 standard and the ISO/IEC MPEG-4 Part 10 standard and Mpeg 2-standard.

The ability to operate the encoder in SD mode and HD mode allows you to fully utilize the potential of the encoder. In MPEG-4 SD mode, the device allows almost no loss of image quality, to receive the amount of transmitted data in ~1.5-2 times greater than when using an encoding device of the MPEG2 standard.

The use of MPEG4/AVC encoder in digital cable television, MMDS, DVB-T, allows you to transmit more programs in the stream, which reduces the cost per program. The encoder operates in real time and can be used to convert a digital signal where there is a need to increase the amount of data transmitted without loss of quality.

HD mode allows you to get a high-quality HD image on the TV screen even at relatively low flow rates. So, with a stream of 6 Mbit / cek and a resolution of 1920x1080x50i, the quality of HD pictures visually on the TV screen can be estimated as quite good.

Functionality

  • Functionally, the device is two separate encoders having SD/HD SDI and CVBS signal inputs. Input signals can be processed according to MPEG4 or MPEG2 digital compression algorithms.
  • In HD and SD mode, the encoder can works with High Profile and MAIN Profile from Level1. 2 to 4.2.
  • Output speed-up to 15mbit / sec per channel.
  • In the MPEG2 standard, the output signal of the encoder can have a maximum resolution of 720x576x50i.
  • The encoder supports PAL and NTSC input signals.
  • The encoder allows you to work with different output resolutions. The resolution for each channel is set from the DVB_Setting setup program included in the DVCrypt software package (DVBToolkit utility)
  • The audio signal is encoded according to the MPEG1 Layer 2 standard.
  • SDI signal with embedded sound. The group and stereo pair of the input signal are selected using the DVB_Setting program included in the DVCrypt package.
  • It is possible to embed analog audio into the SDI signal from external inputs.
  • The encoder has a built-in Remultiplexer, which allows you to feed separately to each of the 2 ASI outputs one of the three signals Channel 1, Channel 2 or Multiplex (both channels).
  • The output signal of the encoder is the ASI transport stream (EN 50083-9: 1998) (2 outputs) as well as the IP stream (2 channels).