Method of and system for measuring quality of audio and video bit stream transmissions over a transmission chain

A method of measuring quality of packetized audio and video transmission over a transmission chain, the method comprising:

• a) providing one or more measurement detectors along the transmission chain;
• b) detecting, by the one or more measurement detectors, loss of bit stream packets at one or more measurement points;
• c) determining a unique identifier for each detected lost packet;
• d) sending, by the one or more measurement detectors, a list of lost packet identifiers to a central monitoring system;
• e) constructing, by the central monitoring system, a simulated stream for each measurement point based on a stored error-free stream and the received lost packet identifiers;
• and
• f) evaluating the simulated stream for deriving a quality score for each measurement point.

A method of measuring quality of packetized audio and video transmission over a transmission chain, the method comprising:

• a) providing one or more measurement detectors along the transmission chain;
• b) detecting, by the one or more measurement detector's loss of bit stream packets at one or more measurement points;
• c) determining a unique identifier for each detected lost packet;
• d) sending, by the one or more measurement detectors, a list of lost packet identifiers to a central monitoring system;
• e1) extracting a set of parameters from an error-free stream;
• e2) modifying the extracted set of parameters based on the list of lost packet identifiers;
• and
• f) evaluating the modified parameter set for deriving a quality score for the transmission along the transmission chain.

A system for measuring quality of audio and video bit stream transmissions over a transmission chain, comprising:

• one or more measurement detectors provided along the transmission chain, configured to detect loss of bit stream packets at one or more measurement points, and to determine the unique identifier for each detected lost packet;
• and
• a central monitoring system, configured to:
• receive a list of lost packet identifiers from the one or more measurement detectors;
• construct a simulated stream for each measurement point based on a stored error-free stream and the received lost packet identifiers;
• and
• evaluate the simulated stream for deriving a quality score for each measurement point.

A system for measuring quality of audio and video bit stream transmissions over a transmission chain, comprising:

• one or more measurement detectors provided along the transmission chain, configured to detect loss of hit stream packets at one or more measurement points, and to determine the unique identifier for each detected lost packet;
• and
• a central monitoring system, configured to:
• receive a list of lost packet identifiers from the one or more measurement detectors;
• extract a set of parameters from a stored error free stream;
• modify the extracted set of parameters based on the list of lost packet identifiers;
• and
• evaluate the modified parameter set for deriving a quality score for transmission along the transmission chain.