Abstract
Video calling over the internet is becoming more and more popular in recent years. The quality of video in such applications is a major contributor to the overall user experience during the call. As received video quality degrades significantly when the network path used is either under-utilized or over-utilized, a method for estimating network bandwidth availability for adapting video bit rate in video calls is highly desirable. This paper presents TREND, a novel technique for dynamic bandwidth estimation and adaptation designed for real-time, interactive video calling. By detecting the delay in the received video frames, TREND estimates available network bandwidth in the path and adapts the encoded bitrate sent to best fit it before packets are lost. TREND uses only standard protocols for delay detection and flow control, and can therefore be easily and effectively used with traditional visual communications systems. After testing TREND under various use cases we have found that it efficiently estimates available bandwidth while outperforming competing tools in terms of detection time and accuracy. By implementing TREND in its video conferencing solutions, RADVISION was able to show a superior quality of experience for its video calls over other solutions available today.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
