Time-compression: systems concerns, usage, and benefits
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
A quantized transform-domain motion estimation technique for H.264 secondary SP-frames
PCM'07 Proceedings of the multimedia 8th Pacific Rim conference on Advances in multimedia information processing
Streaming video over variable bit-rate wireless channels
IEEE Transactions on Multimedia
Improved techniques for dual-bitstream MPEG video streaming with VCR functionalities
IEEE Transactions on Consumer Electronics
Video-on-demand over ATM: constant-rate transmission and transport
IEEE Journal on Selected Areas in Communications
An efficient search strategy for block motion estimation using image features
IEEE Transactions on Image Processing
New architecture for dynamic frame-skipping transcoder
IEEE Transactions on Image Processing
Extended Analysis of Motion-Compensated Frame Difference for Block-Based Motion Prediction Error
IEEE Transactions on Image Processing
MPEG video streaming with VCR-functionality
IEEE Transactions on Circuits and Systems for Video Technology
The SP- and SI-frames design for H.264/AVC
IEEE Transactions on Circuits and Systems for Video Technology
Efficient reverse-play algorithms for MPEG video with VCR support
IEEE Transactions on Circuits and Systems for Video Technology
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With the proliferation of digital video and the popularity of video streaming applications, it is highly desirable to find and access video segments of interest by searching through the content of video at a speed that is faster than a normal playback. The key functions that enable quick browsing of video are fast-forward and fast-reverse playbacks. However, motion-compensated prediction adopted in the current video coding standards drastically complicates these operations. One approach to implement the fast-forward/reverse playback is to store an additional reverse-encoded bitstream in the server. Once the client requests a fast-forward/reverse operation, the server can select an appropriate frame for the client from either the forward-encoded bitstream or the reverse-encoded bitstream by considering the cost of network bandwidth and decoder complexity. Unfortunately, these two bitstreams are encoded separately. The frame in one bitstream may not be exactly identical to the frame in another bitstream. If one of these frames is then used as the reference for the requested frame, which is in another bitstream, it induces mismatch errors. In this paper, a novel H.264 dual-bitstream system aiming at providing the fast-forward/reverse playback based on SP/SI-frames is proposed. The proposed system can completely eliminate mismatch errors when the frame in the reverse-encoded bitstream replaces the frame in the forward-encoded bitstream and vice versa. Experimental results confirm that the proposed system is effective in eliminating mismatch errors so as to enhance the performance of the dual-bitstream system.