Abstract: A video playback device, provided in a P2P-based network, comprises a channel pre-cached buffer, for storing a plurality of video blocks corresponding to a number of pre-cached channels; a display interface, for receiving a request for channel browsing from a viewer and executing playback of the video blocks pertaining to a selected channel indicated on the request; and an agent module, for receiving the request for channel browsing from the display interface, obtaining a seed/peer list pertaining to the selected channel indicated on the request, and downloading the video blocks from seed and/or peer nodes based on the seed/peer list; characterized in that the agent module applies an automatic refreshing mechanism for updating the corresponding video blocks to each pre-cached channel by supplying the most updated video blocks in the channel pre-cached buffer.

Abstract: A video playback device, provided in a P2P-based network, comprises a channel pre-cached buffer, for storing a plurality of video blocks corresponding to a number of pre-cached channels; a display interface, for receiving a request for channel browsing from a viewer and executing playback of the video blocks pertaining to a selected channel indicated on the request; and an agent module, for receiving the request for channel browsing from the display interface, obtaining a seed/peer list pertaining to the selected channel indicated on the request, and downloading the video blocks from seed and/or peer nodes based on the seed/peer list; characterized in that the agent module applies an automatic refreshing mechanism for updating the corresponding video blocks to each pre-cached channel by supplying the most updated video blocks in the channel pre-cached buffer.

Abstract: The present invention is to disclose a peer-to-peer based broadcast system for broadcasting video contents, comprising at least one video head-end means for receiving a plurality of original video contents, said video head-end means comprising a splitter to split each original video content into a plurality of video files for each video file being formed of a group of pictures (GOPs) based on said GOPs' boundaries, and said video head-end means further comprising at least one content repository means for storing said video files corresponding to each of original video contents; at least one relay means for receiving and broadcasting some of said video files (190) from the video head-end means; a plurality of peers for receiving and broadcasting some of said video files; at least one super seed means for receiving said video files from said relay means and/or said peers, and broadcasting said files to some of said peers; at least one network management means for managing connections among said super seed means