|
|
|
|
|
|
|
|
|
Embedded Software Performance Monitoring Agent for IPTV, IP Videoconferencing, and VoIP |
|
 |
|
SQlive™ is a breakthrough performance monitoring software application for IPTV, IP Videoconferencing and Voice over IP, based on Telchemy's industry-leading VQmon/HD performance analysis technology.
SQlive can be easily integrated or installed into a wide range of end system and customer premises equipment (CPE), including IPTV set-top boxes and home gateways. SQlive is compact (<500 KB) and requires little CPU overhead, making it ideal for use in a set-top box.
SQlive non-intrusively monitors RTP and MPEG-2 Transport media streams, automatically detecting frame structure and stream properties such as codec type, image size, and frame rate. It performs high-level analysis of scene content (e.g., levels of detail and motion), calculates video quality per frame, and generates real-time Mean Opinion Scores (MOS) and a rich set of diagnostic information. SQlive's passive monitoring technology provides 24x7 feedback on video quality and network performance without increasing network load. |
|
|
|
| |
|
|
|
Key Advantages
of SQlive
Analyzes both encrypted (scrambled) and unencrypted video streams
Unlike other video performance monitoring technologies, SQlive has the ability to extract quality information from encrypted video without decoding—a real advantage for applications where security, privacy rights, or Digital Rights Management (DRM) are important concerns.
-
Measures impact of impairments on specific video content
The visibility of video impairments depends in part on the video content itself—for example, frame freezes tend to be more noticeable during high-motion scenes (such as a football game) than relatively static scenes (such as footage of a news anchor). SQlive performs high-level analysis of motion, detail, and panning levels, and uses the information to more accurately calculate its estimated perceptual quality scores.
Measures impact of packet loss on specific video frame types
Because of the complex frame structure of IP video, it's not enough to simply measure the rate of packet loss when determining video quality—the same level of packet loss may cause severe degradation or may pass unnoticed, depending on which frame types are affected. SQlive identifies individual I, B, and P frames in the Group of Pictures (GoP) and calculates the impact of loss on each frame type, producing estimated perceptual quality scores that are significantly more accurate than those derived from overall packet loss measurements alone. -
Powered by VQmon technology
SQlive derives its performance metrics from Telchemy's industry-leading VQmon performance analysis technology—the most widely-used multimedia quality analysis software with a proven record of superior accuracy and performance.
|
|
| |
Above: A typical use of SQlive in a residential IPTV subscriber's set-top box. SQlive reports quality and performance metrics in real time back to to the service provider's network management system.
|
|
| |
|
|
| Below: A packet-loss-related error in an I or P frame may visibly degrade video quality for up to several seconds, but the same level of loss affecting a single B frame will only last a few milliseconds and may not be noticed by viewers. |
|
 |
|
|
|
|
|
|
SQlive Features
-
Analyzes both encrypted (scrambled) and unencrypted video streams
-
Detects Group of Pictures (GoP) frame structure and identifies I, B, and P frames
-
Calculates impact of packet loss/discard on each frame type
-
Performs high-level content analysis and calculates impact of impairments on perceptual quality of content being viewed (high motion vs. static scenes)
-
Detects abnormal content such as frozen or blank video and generates content alerts
-
Compact code size (<500 KB) ideal for use in IPTV set-top box or home gateway
-
Low per-stream processing overhead
-
Supports a wide range of video & audio codecs and transport protocols
|
|
Key Metrics Reported
-
Real-time perceptual quality Mean Opinion Scores (MOS) for picture, audio, and combined audio-video (MOS-V, MOS-A, MOS-AV)
-
Absolute and Relative MOS-V
-
Video Service Transmission Quality (VSTQ)
-
Calculated levels of degradation due to factors including packet loss and discard, delay, codec quantization, audio-video sync, and more
-
Number and proportion of I, B, P, SI, and SP frames received/impaired
-
Levels of detail, motion, and panning
-
TR 101 290 Priority 1 and 2 metrics
- Packet loss/discard, jitter, delay, bandwidth metrics and many more
|
|
| For more information about SQlive, see the SQlive Product Brochure or contact Telchemy. |
|
| |
|
|
|
|
|
|
|
|
|
