Abstract: Methods, systems, and computer readable media for utilizing a plurality of pre-encoded payloads in a stream transmission are disclosed. According to one aspect, a method includes receiving a plurality of payload streams associated with an audio stream clip file and selecting a first payload stream encoded at a first bit rate from the plurality of payload streams as the payload for a packet stream transmission being sent to a device under test. The method also includes receiving a bit rate change request that indicates a second payload stream encoded at a second bit rate is to be used as the payload for the packet stream transmission and conducting a synchronization procedure that synchronizes a first packet of the second payload stream with a last packet of the first payload stream in order to transition the packet stream transmission from the first bit rate to the second bit rate.

Abstract: Methods, systems, and computer readable media for non-intrusive mean opinion score (MOS) estimation based on packet loss pattern are disclosed. According to one aspect, a method for non-intrusive mean opinion score estimation based on packet loss pattern includes receiving a packet data stream, measuring the packet loss for the received data stream, calculating a probability of packet loss based on the measured packet loss, and calculating an estimated mean opinion score based on the calculated probability of packet loss. In one embodiment, the estimated mean opinion score is calculated using a mathematical function that maps calculated probability of packet loss to mean opinion score. In one embodiment, the mathematical function is a polynomial having coefficients that are selected so that the polynomial closely models reference opinion scores for a range of packet loss probabilities.

Abstract: Methods, systems, and computer readable media for utilizing a plurality of pre-encoded payloads in a stream transmission are disclosed. According to one aspect, a method includes receiving a plurality of payload streams associated with an audio stream clip file and selecting a first payload stream encoded at a first bit rate from the plurality of payload streams as the payload for a packet stream transmission being sent to a device under test. The method also includes receiving a bit rate change request that indicates a second payload stream encoded at a second bit rate is to be used as the payload for the packet stream transmission and conducting a synchronization procedure that synchronizes a first packet of the second payload stream with a last packet of the first payload stream in order to transition the packet stream transmission from the first bit rate to the second bit rate.

Abstract: Methods, systems, and computer readable media for non-intrusive mean opinion score (MOS) estimation based on packet loss pattern are disclosed. According to one aspect, a method for non-intrusive mean opinion score estimation based on packet loss pattern includes receiving a packet data stream, measuring the packet loss for the received data stream, calculating a probability of packet loss based on the measured packet loss, and calculating an estimated mean opinion score based on the calculated probability of packet loss. In one embodiment, the estimated mean opinion score is calculated using a mathematical function that maps calculated probability of packet loss to mean opinion score. In one embodiment, the mathematical function is a polynomial having coefficients that are selected so that the polynomial closely models reference opinion scores for a range of packet loss probabilities.

Abstract: There is disclosed a method, device, and system for verifying a video path between a source device and a destination device. The destination device may receive a video signal including at least one video test pattern from the source device via a network. The destination device may automatically judge that a video path exists if the received video signal meets at least one predetermined criteria.

Abstract: There is disclosed a method, device, and system for verifying a video path between a source device and a destination device. The destination device may receive a video signal including at least one video test pattern from the source device via a network. The destination device may automatically judge that a video path exists if the received video signal meets at least one predetermined criteria.