vDelay: A Tool to Measure Capture-to-Display Latency and Frame Rate

Authors:
Omer Boyaci;Andrea Forte;Salman Abdul Baset;Henning Schulzrinne
Affiliations:
-;-;-;-
Venue:
ISM '09 Proceedings of the 2009 11th IEEE International Symposium on Multimedia
Year:
2009

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User-centric video delay measurements

Proceeding of the 23rd ACM Workshop on Network and Operating Systems Support for Digital Audio and Video

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Abstract

We present vDelay, a tool for measuring the capture-to-display latency (CDL) and frame-rate of real-time video applications such as video chat and conferencing. vDelay allows measuring CDL and frame-rate without modifying the source code of these applications. Further, it does not require any specialized hardware. We have used vDelay to measure the CDL and frame-rate of popular video chat applications such as Skype, Windows Live Messenger, and GMail video chat. vDelay can also be used to measure the CDL and frame-rate of these applications in the presence of bandwidth variations.