Transcoding proxy and method for transcoding encoded streams

作者： Pierre Vandergheynst , Olivier Verscheure , Pascal Frossard , Lisa Amini

DOI:

关键词: Transcoding 、 Computer network 、 Audio signal 、 Computer science 、 Real-time computing 、 Domain (software engineering) 、 Path (computing) 、 Wireless 、 Transmission (telecommunications) 、 Personal computer 、 Set (abstract data type)

摘要: An apparatus, a method and system to efficiently manipulate in the compressed domain, spatial and/or temporal scaling of matching pursuit-coded digital signals. These manipulations, referred as transcoding, may take place at transcoding proxy located an origin server, any intermediary along transmission path from server client device, device. The preferred embodiment focuses on perform rate adaptation spatio-temporal video stream composed 3-D atoms order serve set heterogeneous devices (e.g., high-end personal computer, assistant wireless phone). proposed applies 1-D (decomposition audio signals) 2-D (image decomposition).