Abstract: Mechanisms are provided for replacing default advertisement streams in a media stream with replacement advertisement streams. User profile information is obtained for a particular user and/or device. A default advertisement stream is identified and replaced with advertisement streams selected using the user profile information. Timestamp information and sequence number information is maintained to allow uninterrupted delivery of the modified media stream while customizing media streams for particular users.

Abstract: Mechanisms are provided for generating and modifying live media streams. A device establishes a session and requests a media stream from a content server. The content server provides the media stream to the device. The content server also obtains an insertion stream for inclusion in the media stream. Packets are removed from the media stream to allow inclusion of the insertion stream. Timestamp information and sequence number information is maintained to allow uninterrupted delivery of the modified media stream.

Abstract: A content server is configured to buffer and transmit numerous live media streams to individual devices. The content server analyzes characteristics associated with the live media streams to determine timing and sequence number information. Other characteristics such as network congestion metrics, device buffer usage metrics, etc., can also be evaluated. Combined peak transmission times are determined to allow packets designated for transmission at a bandwidth usage peak to be transmitted earlier in time. Earlier packets are shifted even earlier as sequence numbers allow. This evens out bandwidth usage rates and allows improved live media stream transmission.