Q-Master Video & Audio Quality Analyzer for IPTV/VoD、STB and VoIP
数字和模拟视讯接口的影像与语音质量分析器

Optimum公司提供先进的影像与语音质量的分析工具: Q-Master Video System和Q-Master Voice System。Optimum 专攻点对点的QoS分析并使用ITU所规范的标准来进行测试。Q-Master Video System同时拥有数字(10/100/1000M Ethernet VoIP) 与模拟(S-Video 和Composite) 的视讯接口,利用业界认可的影像质量测试分析法则进行测试,并提供下列测量参数:Overall MOS score、Blocking、Blurring、Jerkiness、 PSNR、PSNR vs. time、lost frames and/or packets 及 其它多项参数。

Optimum 的产品被广泛的使用在IBM,General Dynamics,T-Mobile,Alcatel,Verizon Wireless,Microsoft,Intelsat,Sprint/Nextel,DoCoMo,Dolby Labs,Apple Computer,Intel,Motorola,Nielsen Media,TI … 等企业;是研发测试与质量评量方面,不可多得的好工具。

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Q-Master Voice System
Quality Assessment of Next Generation Video Systems

The Q-Master Video System addresses the quality assessment aspect of a video communication channel with the use of perceptual analysis. The obtained result is a Mean Opinion Score for Video (VMOS) that represents the end-user perception of quality in the network or device under test Quality assessment of video streaming and IPTV/Video on Demand is done with the VQuad algorithm. The measurement result is a Video Mean Opinion Score value combined with information such as block distortion, blurring, edge busyness, jerkiness, PSNR and noise.

The Q-Master Video System facilitates the sending of video test clips either from its Signal Source, internal Video Server, or any external Streaming Server on the network. The Video Capture of the received test clip and subsequent analysis, allows developers and operators to assess the correct functioning of networks and/or devices such as codecs, transcoders, set top boxes, gateways, etc.

The Q-Master Video System includes dedicated hardware with a variety of available network and device interfaces. It facilitates the sending and receiving of signals over Ethernet VoIP channels, S-Video, and composite video.

A Windows based user interface provides a simple yet full featured test environment allowing fast and comprehensive quality assessment measurements.

Q-Master can be deployed both locally or remotely connecting by means of LAN for control. All measurement results are stored and can be reviewed or included in reports at a later date.

Optimum offers perceptual assessment algorithms for speech and video that are standardized by the ITU for quality measurements on an end-to end basis for transmission systems that use coding and decoding.

Features

o End-to-end verification of video quality in IPTV, Video on Demand, Broadband, Broadcast or Wireless services.
oMeasure Video Quality with standardized perceptual algorithms.
o Internal and external streamers supported. o Easy correlation between visual display and measurement results on a frame by frame basis.
o Play original and degraded displays side by side at normal speed, in slow motion or frame by frame. o Various interfaces available such as Ethernet, S-Video, Composite Video.
o Support for Unicast and Multicast.
o Control interface with LAN, locally or remotely.
o Multipoint deployment supported.
o Easy-to-use, Windows-based user interface
o Graphical presentation of all measurements
o Detailed performance analysis and statistics.

Specifications

o Video quality measurements: VMOS, PSNR, Bias Level
o Temporal measurements: Blurring, Jerking
o Spatial measurement: Blocking
o Transport measurements: Jitter, Missed Frames, Frames Lost
o Graphical displays: VMOS vs frame, PSNR vs frame, Blocking vs frame, Blurring vs frame, Jerking vs frame, Frame and Packet sequence vs time
o Transport statistics: Frame Display jitter distribution, Packet jitter distribution
o Video interfaces: S-Video, Composite Video, 10/100/1000 BaseT, USB, IEEE 1394
o Video Compression: MPEG 2, MPEG 4, H.264
o Format Support: QCIF - 176 x 144, CIF - 352 x 288 or 352 x 243, VGA - 640 x 480, NTSC - 525 lines, 720 x 486, PAL - 625 lines, 720 x 576
o Bandwidths Supported: 100K, 300K, 500K, 1000K. 2000K, 3000K
o Throughput: 8 fps, 15 fps, 25 fps, 30 fps
o Streamer Support: Internal Video Streamer, External Streamers
o Streamer Protocols: RTSP-Unicast, UDP-Multicast, RDP-Multicast
o Video Content: 6 Optimum content streams, Any custom streams
o Video Capture: Quicktime, Real Networks
o Dimensions: 12?' x 12?' x 3'
o Power: 19V, 100W max.

Applications

Set Top Box Testing
o From internal Q-Master server
o From external customer server

Network Streaming
o IP-out to IP-in
o IP-in from external source

Analog Video Testing
o From Composite or S-Video to Composite or S-Video
o NTSC to PAL or PAL to NTSC

System Version:
o Q-Master Video: QM-3000
o Video quality analyzer, incl. 2 ports ea.: Composite, S-Video. Integrated Video Server

Options for Q-Master Video System Version:
o 10/100/1000 Ethernet, 2 ports RJ45 QM-ETH
o Wireless Phone Adapter QM-WPA

Software Version:
o Q-Master Video-SW: QM-3000-SW
o Video quality analyzer, incl. Software file mode only

 

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上次修改日期: 2008/07/17
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