Video Quality Analysis for Videoconferencing and IPTV

Specifically designed for integration in network analyzers, IPTV probes, residential gateways, IP set top boxes, videoconferencing and test equipment, 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 call or at any point during a call, providing much greater insight than simpler aproaches measuring average loss/jitter.

Key advantages of VQmon/SA-VM are:-

• Analyzes Scrambled/ Encrypted streams
• Analyzes impact of loss in I, B and P frames (see demo here)

VQmon/SA-VM adds non-intrusive video monitoring support to VQmon/SA 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/SA-VM is ideal for monitoring videoconferencing and video streaming sessions, and is small, fast and lightweight, taking a small fraction of a MIP to produce a wide range of video transmission performance metrics. VQmon/SA-VM 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

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 I frames
Number of Impaired I frames
Number of Good P frames
Number of Impaired P frames
Number of Good B frames
Number of 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
VSPQ - Picture quality
Gap VSPQ - Picture quality during gaps
Burst VSPQ - Picture quality during bursts
VSAQ - Audio quality
VSMQ - Multimedia quality

 

VQmon/SA-VM product brochure