An important factor for ensuring high quality collaboration meetings is low end-to-end audio and video latency between the meeting participants. Traditional network tools measure network latency only, and not the additional latency that is introduced by media processing. Measuring the true media latency between participants in a collaboration meeting is thus important. Preferably, such measurements are made during every call using signals that are undetectable by a user. Techniques are presented herein that support the encoding of an inaudible watermark message into the audio streams of a video conference. By measuring the roundtrip time of such a message, the measurement of end-to-end media latency becomes possible. Such measurements may be used to create reports for system administrators, containing statistics regarding the media latency in their collaboration network, that may be used to identify the parts of the network that have unacceptably high media latency.
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Gauteplass, Ole and Barth, Ragnvald, "MEASURING END-TO-END MEDIA LATENCY IN VIDEOCONFERENCING USING AUDIO WATERMARKING", Technical Disclosure Commons, (June 07, 2022)