NameOTV-MH42A MPEG-2 H.264 HD Encoder With 4-CH SDI or 4-Ch HDMI Input
Product Name:4-Channel MPEG-2/H.264 HD Encoder
Input:4-Ch SDI or 4-Ch HDMI
Video Compression:MPEG2 HD/SD & MPEG4 AVC/H.264 HD/SD
Output:ASI output, IP (MPTS & 4 SPTS) output over UDP, RTP
CC (closed caption):Yes, support
Support:Low Latency function
Provide:PSI/SI editing and inserting
Support:Double power supply
AC3 audio encoding:Yes, support
Application:DTV Headend System

Product Description

Order Guide: 

OTV-MH42 2-Channel MPEG-2/H.264 HD Encoder( 2*SDI or 2*HDMI)

OTV-MH42A 4-Channel MPEG-2/H.264 HD Encoder(4*SDI or 4*HDMI)


OTV-MH42A 4-Channel MPEG-2/H.264 HD Encoder features high performance, low latency and extremely low bit rates for DTV system, and adopts state-of-the-art video compression technology for MPEG-2 and H.264 changing seamlessly. Capable of powerful functions for audio encoding, supports MPEG1 Layer 2, LC-AAC, HE-AAC and Dolby AC3 by option.


OTV-MH42A 4-Channel MPEG-2/H.264 HD Encoder is designed in standard 1U chassis, with a max. capability of Hot-Pluggable two modules (Each module can support 2 channels). The device provides input interface up to 4*HD-SDI or 4*HDMI, moreover, it has 2*ASI and 1*IP(UDP/RTP) output interfaces, after loss-less compression processing, SDI programs can through the ASI and IP ports in MPTS or SPTS. The empty packets filtering capable of IP out not only enable to provide more services in the limited bandwidth, but also largely enhance the utilization of spectrum source of IPTV system.


OTV-MH42A 4-Channel MPEG-2/H.264 HD Encoder adopts inner drawer type structural design which greatly facilitates the change of encoding modules if needed. 

Key Features:

  • MPEG2 HD/SD & MPEG4 AVC/H.264 HD/SD video encoding

  • MPEG1 Audio Layer 2, LC-AAC, HE-AAC and AC3 audio encoding

  • Support dialog normalization (applicable for DD AC3)

  • 4*HD-SDI or 4*HDMI input

  • Support double power supply

  • Support VBR/CBR rate control mode

  • Support CC (closed caption) EIA 608 & EIA 708 for HD-SDI input

  • Support Low Latency function

  • Support PSI/SI editing and inserting

  • Supports IP null packet filter

  • ASI output, IP (MPTS & 4 SPTS) output over UDP, RTP

  • LCD display, Remote control and firmware

  • Web-based NMS management, updates via web

Technical Specifications:



Video Specifications

Video compression: MPEG-2,HD/SD MPEG-4 AVC/H.264

Video inputs: 4*HD-SDI or 4*HDMI

Resolution: 1920*1080_60P, 1920*1080_50P (only for H.264/MPEG-4 AVC)

1920*1080_60i, 1920*1080_50i

1280*720_60P, 1280*720p_50P

720*480_60i, 720*576_50i


0.5Mbps~19.5Mbps for H.264 Encoding

1Mbps~19.5Mbps for MPEG-2 Encoding

Rate Controlling Mode: CBR/VBR

Aspect Ratio: 4:3, 16:9

Chroma Sampling: 4:2:0

Video pre-processing: De-interlacing, Noise reduction, Sharpen

Audio Specifications

Audio compression: MPEG-1 Layer2, LC-AAC, HE-AAC (v1&v2),

Dolby Digital AC3(optional)

Sampling rate: 48KHz

Sampling accuracy: 24-bit

Encoding bit rate: 64Kbps~320Kbps

IP Output

Transport protocol: UDP/RTP protocol

IP output channel: MPTS/4*SPTS over IP

Support empty packets filtering

Connector: RJ45, 10/100M

ASI Output

Output channel: 2*ASI, BNC interface

TS standard: EN 50083-9 ASI

Max. output bit rate: 170Mbps

MPEG frame: 188/204 Byte

Reflection loss: >10dB

Connector: 75 ohm, BNC interface


Connector: 1*RJ-45, 10/100 Base-T (NMS interface)

Remote control: by NMS

The mode of Low Latency: Normal, mode1, mode2

Local control: keyboard on front panel, LCD display

The Working Environment


(WxLxH) 482mm×400mm×44mm

Gross Weight



0 to 45(For working), -20 to 80(For storing)

Input Voltage

AC 100V-220V±10%, 50/60Hz

Key Diagram:


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