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 VQmon/HD
VQmon/HD
Embedded Video Quality Analysis Technology for IPTV and IP Videoconferencing

Specifically designed for integration into network analyzers, IPTV probes, residential gateways, IP set-top boxes, videoconferencing and test equipment, VQmon/HD (formerly VQmon/SA-VM) efficiently analyzes multiple parallel packet (either RTP or MPEG Transport) video streams, producing Telchemy Video Quality Metrics (TVQM). Video stream subjective quality estimates and detailed diagnostics for each stream can be produced either at the end of each video session or at any point during a session, providing much greater insight than simpler loss/jitter approaches such as MDI.

Key advantages of VQmon/HD include:

  • Analyzes scrambled/encrypted streams
  • Produces accurate Video, Audio, and combined Audiovisual MOS scores
  • Extracts high-level content descriptors
  • Generates alerts for frozen or blank video
  • Analyzes impact of loss in I, B, and P frames (see demo here)
  
VQmon/HD provides non-intrusive video monitoring for H.261, H.263, H.263+, MPEG1, MPEG2, MPEG4, VC1, and other key video codecs, with support for both RTP- and MPEG Transport-based streams. VQmon/HD is ideal for monitoring videoconferencing and video streaming sessions, and is small, fast and lightweight, taking a fraction of a MIP to produce a wide range of video transmission performance metrics. VQmon/HD may be used for video monitoring or in conjunction with VQmon/SA for monitoring both voice and video over IP.

Telchemy Video Quality Metrics (TVQM)

Metrics reported by VQmon/HD for every video session include:

Transport Metrics

IP, RTP, MPEG Transport Statistics:

  • Packet Loss Rate
  • Packet Discard Rate
  • Gap Loss Rate and Gap Length
  • Burst Loss Rate and Burst Length
  • Number of Bursts
  • FEC Effectiveness
  • RTP Jitter (PDV)
  • PCR Jitter

    • TR 101 290 Decodability Metrics:

  • TS_sync_loss
  • Sync_byte_error
  • Continuity_count_error
  • Transport_error
  • PCR_error
  • PCR_repetition_error
  • PCR_discontinuity_indicator_error
  • PTS_error
    		•

     

    Video Stream Metrics

    • Codec type
    • Group of Pictures Type (auto-detected)
    • Group of Pictures Length (auto-detected)
    • Image Size
    • I frame packets received/lost/discarded
    • P frame packets received/lost/discarded
    • B frame packets received/lost/discarded
    • Number of Good/Impaired I frames
    • Number of Good/Impaired P frames
    • Number of Good/Impaired B frames

    Perceptual Quality Metrics

    • MOS-V Video MOS
    • MOS-A Audio MOS
    • MOS-AV Audio-Video MOS
    • EPSNR - Estimated PSNR
    • VSTQ - Transmission quality

     
    For more information, see the VQmon/HD Product Brochure or contact us.


    © Copyright 2006 Telchemy Inc. All Rights Reserved.