Computing Latency Introduced by Media Transcoding Operations

A computing device having a processor and a memory coupled to the processor, the memory configured to store program instructions executable by the processor to cause the computing device to:

• receive a plurality of incoming Real-Time Protocol (RTP) packets and record a time of arrival of each of the plurality of incoming RTP packets;
• enable transcoding operations configured to transcode payload information within the plurality of incoming RTP packets;
• create a plurality of outgoing RTP packets using the transcoded payload information and record a time of transmission of each of the plurality of outgoing RTP packets;
• and
• provide the plurality of incoming and outgoing RTP packets to a packet analyzer, the packet analyzer configured to match at least one of the plurality of incoming RTP packets to a corresponding one of the plurality of outgoing RTP packets, the packet analyzer further configured to calculate a latency associated with a transcoding operation performed upon payload information within the at least one of the plurality of incoming RTP packets based upon a difference between a time of transmission of the corresponding one of the plurality of outgoing RTP packets and a time of arrival of the at least one of the plurality of incoming RTP packets.

A tangible computer-readable storage medium having program instructions stored thereon that, upon execution by a computing system, cause the computing system to:

• receive incoming Real-Time Protocol (RTP) packets, each having a payload encoded with a first codec and having a time of arrival;
• receive outgoing RTP packets, each having a payload encoded with a second codec and having a time of transmission;
• correlate one of the incoming RTP packets with a corresponding one of the outgoing RTP packets;
• and
• calculate a latency associated with a transcoding of the one of the incoming RTP packets into the corresponding one of the outgoing RTP packets based upon a difference between the time of transmission of the corresponding one of the outgoing RTP packets and the time of arrival of the one of the incoming RTP packets.

A method, comprising:

• receiving incoming Real-Time Protocol (RTP) packets, each having time of arrival and a payload encoded with a first codec;
• receiving outgoing RTP packets, each having a time of transmission and a payload encoded with a second codec;
• and
• calculating a latency associated with a transcoding of at least one of the incoming RTP packets into at least one corresponding one of the outgoing RTP packets based upon a difference between the time of transmission of the at least one corresponding one of the outgoing RTP packets and the time of arrival of the at least one of the incoming RTP packets.