Title :
Implementation and quality evaluation of video telephony using Session Initiation Protocol
Author :
Samanchuen, Taweesak ; Kiattisin, Supaporn
Author_Institution :
Technol. of Inf. Syst. Manage. Div., Mahidol Univ., Nakorn Pathom, Thailand
Abstract :
Video telephony is a big change of communication technologies and becomes a standard-based technology available on personal computers and mobile phones for today. Video telephony technology has been developed using several advanced technologies which can be simplified into two fundamental parts, i.e., server and client. The server enables the clients to keep connect to each other while the client captures the audio and video data for transmission and converts the transmission of data back to the form of audio and video signals. For our implemented systems, Session Initiation Protocol (SIP) server is used as video telephony server. Video codec such as VP8, MPEG4, H263, and H264 are used as video compression in the client. The performances of codec are evaluated by objective and subjective quality tests. The result shows that the implemented system can work properly and the video quality of each codec is also evaluated.
Keywords :
data compression; signalling protocols; video codecs; video coding; videotelephony; H263 video codec; H264 video codec; MPEG4; SIP; VP8 video codec; audio signal; client; communication technology; data transmission; mobile phone; personal computer; quality evaluation; server; session initiation protocol; standard-based technology; video compression; video signal; video telephony technology; MPEG 4 Standard; PSNR; Quality assessment; Servers; Smart phones; Telephony; Video recording;
Conference_Titel :
Asia-Pacific Signal and Information Processing Association, 2014 Annual Summit and Conference (APSIPA)
Conference_Location :
Siem Reap
DOI :
10.1109/APSIPA.2014.7041757
