Video transcoding gateway for wireless video access

In this paper, we review several typical video transcoding architectures and major applications of video transcoding. We identify issues involved in access video streams through handheld devices and wireless networks. To handle these issues, we propose a video transcoding gateway system for intelligently transcoding preencoded video for different user devices and network connections. The main functions of this transcoding gateway include frame size downscaling, frame rate conversion, bit rate adaptation, color conversion, etc. Based on this, we design and implement a prototype of the transcoding gateway system and test it in a wireless LAN.