Ma, Zhen YuTucker, William David2013-01-242013-01-242008Ma, Z. Y. & Tucker, W. D. (2008). Adapting x264 to asynchronous video telephony for the Deaf. In D. Browne (ed.), Southern African Telecommunication Networks and Applications Conference (SATNAC), pp. 127–132, Wild Coast Sun, Eastern Cape, South Africa978-0-620-41696-2http://hdl.handle.net/10566/511Deaf people want to communicate remotely with sign language. Sign language requires sufficient video quality to be intelligible. Internet-based real-time video tools do not provide that quality. Our approach is to use asynchronous transmission to maintain video quality. Unfortunately, this entails a corresponding increase in latency. To reduce latency as much as possible, we sought to adapt a synchronous video codec to an asynchronous video application. First we compared several video codecs with subjective and objective metrics. This paper describes the process by which we chose x264 and integrated it into a Deaf telephony video application, and experimented to configure x264 optimally for the asynchronous environment.enCopyright Telkom. This file may be freely used for educational purposes, as long as it is not altered in any way. Acknowledgement of the authors and the source is required.AsynchronousDeaf telephonyH.264LatencyQuality of ServiceVideo over IPx264Conference Proceedings