Error-resilient video transcoding for robust internetwork communications using GPRS

Abstract--A novel fully comprehensive mobile video communications system is proposed in this paper. This system exploits the useful rate management features of the video transcoders and combines them with error resilience for transmissions of coded video streams over general packet radio service (GPRS) mobileaccess networks. The error-resilient video transcoding operation takes place at a centralized point, referred to as a video proxy, which provides the necessary output transmission rates with the required amount of robustness. With the use of this proposed algorithm, error resilience can be added to an already compressed video stream at an intermediate stage at the edge of two or more different networks through two resilience schemes, namely the adaptive intra refresh (AIR) and feedback control signaling (FCS) methods. Both resilience tools impose an output rate increase which can also be prevented with the proposed novel technique in this paper. Thus, an error-resilient video trans...

• Type: Journal
• Year: 2002
• Where: TCSV
• Authors: Safak Dogan, Akin Cellatoglu, Mustafa Uyguroglu, Abdul H. Sadka, Ahmet M. Kondoz
• Keywords: Error Resilience, Resilience, TCSV 2002, Video