A Broadcasting Protocol for Compressed Video
نویسنده
چکیده
Video broadcasting protocols can improve the efficiency of video on demand services by reducing the bandwidth required to distribute the videos that are simultaneously watched by many viewers While many broadcasting protocols have been proposed, none of them takes into account the fact that the server will broadcast compressed videos whose bandwidth requirements depend on the rate of change of the displayed images. We present here a new broadcasting protocol specifically tailored for the task of broadcasting compressed video. Our protocol continuously broadcasts the first segment of each video in real time. It then broadcasts the remaining segments of the video at frequencies ensuring that each segment can be completely downloaded by the time the customer has finished watching the previous segment. Hence these segments do not require excess bandwidth.
منابع مشابه
A Dynamic Heuristic Broadcasting Protocol for Video-on-Demand
Most existing distribution protocols for video-ondemand are tailored for a specific range of video access rates and perform poorly beyond that range. We present a dynamic heuristic broadcasting protocol that performs as well as stream tapping with unlimited extra tapping at low video access rates and has the same average bandwidth requirements as the best existing broadcasting protocols at high...
متن کاملAn Efficient Hierarchical Modulation based Orthogonal Frequency Division Multiplexing Transmission Scheme for Digital Video Broadcasting
Due to the increase of users the efficient usage of spectrum plays an important role in digital terrestrial television networks. In digital video broadcasting, local and global content are transmitted by single frequency network and multifrequency network respectively. Multifrequency network support transmission of global content and it consumes large spectrum. Similarly local content are well ...
متن کاملVideo Abstraction in H.264/AVC Compressed Domain
Video abstraction allows searching, browsing and evaluating videos only by accessing the useful contents. Most of the studies are using pixel domain, which requires the decoding process and needs more time and process consuming than compressed domain video abstraction. In this paper, we present a new video abstraction method in H.264/AVC compressed domain, AVAIF. The method is based on the norm...
متن کاملCompressed Domain Scene Change Detection Based on Transform Units Distribution in High Efficiency Video Coding Standard
Scene change detection plays an important role in a number of video applications, including video indexing, searching, browsing, semantic features extraction, and, in general, pre-processing and post-processing operations. Several scene change detection methods have been proposed in different coding standards. Most of them use fixed thresholds for the similarity metrics to determine if there wa...
متن کاملCompressed-Domain Video Processing
compressed domain processing, transcoding, video editing, MPEG, splicing, reverse play, frame rate conversion, interlace to progressive, motion vector resampling Video compression algorithms are being used to compress digital video for a wide variety of applications, including video delivery over the Internet, advanced television broadcasting, video streaming, video conferencing, and video stor...
متن کامل