Video transcoder architectures for bit rate scaling of H.263 bit streams
MULTIMEDIA '99 Proceedings of the seventh ACM international conference on Multimedia (Part 1)
Video transcoding for universal multimedia access
MULTIMEDIA '00 Proceedings of the 2000 ACM workshops on Multimedia
Rate adaptation transcoding for precoded video streams
Proceedings of the tenth ACM international conference on Multimedia
Cost effective transcoding for QoS adaptive multimedia streaming
Proceedings of the 2004 ACM symposium on Applied computing
Adaptive video transcoding and streaming over wireless channels
Journal of Systems and Software - Special issue: Adaptive multimedia computing
RaDiO edge: rate-distortion optimized proxy-driven streaming from the network edge
IEEE/ACM Transactions on Networking (TON)
A fast MPEG-2 to H.264 downscaling transcoder
ISCGAV'08 Proceedings of the 8th conference on Signal processing, computational geometry and artificial vision
A novel approach for improving the quality of service for wireless video transcoding
Journal of Mobile Multimedia
Key techniques of bit rate reduction for h.264 streams
PCM'04 Proceedings of the 5th Pacific Rim Conference on Advances in Multimedia Information Processing - Volume Part II
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It is expected that most of the video services will be based on the MPEG2 standard and many of them using recorded streams. When compressed video is recorded, the characteristics of the channel through which it will be transmitted are assumed to be known beforehand. Therefore a great lack of flexibility arises in transmission of these streams when channels of diverse characteristics are used. If the same video programme is to be simultaneously distributed to several users through channels with different capacities, the service provider needs to keep several copies of that programme, each one encoded according to the corresponding channel characteristics. We show that it is only required to keep one copy of the coded data at its highest possible quality. Transcoding the main stream to lower rates is achieved with minimum delay. Therefore the transcoder is also capable of fast response to network demands to prevent packet loss.