Title :
vDelay: A Tool to Measure Capture-to-Display Latency and Frame Rate
Author :
Boyaci, Omer ; Forte, Andrea ; Baset, Salman Abdul ; Schulzrinne, Henning
Author_Institution :
Dept. of Comput. Sci., Columbia Univ., New York, NY, USA
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.
Keywords :
multimedia communication; real-time systems; video communication; capture-to-display latency; frame rate; real-time video applications; vDelay; Application software; Bandwidth; Computer science; Decoding; Delay; Hardware; Streaming media; USA Councils; Video compression; Videoconference; CDL; capture-to-display latency; fps; frame-rate; measurement tool; skype; video chat; video conferencing; video-chat;
Conference_Titel :
Multimedia, 2009. ISM '09. 11th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-5231-6
Electronic_ISBN :
978-0-7695-3890-7
DOI :
10.1109/ISM.2009.46
