Marking Keyframes For A Communication Session
First Claim
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1. A method for marking a keyframe of a media stream in a communication system, comprising:
- performing the following for each entry media switch of one or more entry media switches to yield one or more output media streams, the one or more entry media switches operable to communicate with one or more endpoints;
receiving a media stream from an endpoint of the one or more endpoints, the media stream comprising a sequence of packets, the sequence of packets comprising a keyframe;
detecting the keyframe of the sequence of packets;
marking the keyframe with a keyframe indicator, the keyframe indicator operable to notify a downstream device of the keyframe; and
outputting an output media stream.
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Abstract
Marking a keyframe of a media stream in a communication system involves one or more entry media switches in communication with one or more endpoints. An entry media switch receives a media stream from an endpoint, where the media stream comprises a sequence of packets with a keyframe. The keyframe is detected and marked with a keyframe indicator. The keyframe indicator is operable to notify a downstream device of the keyframe. An output media stream is outputted.
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Citations
20 Claims
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1. A method for marking a keyframe of a media stream in a communication system, comprising:
performing the following for each entry media switch of one or more entry media switches to yield one or more output media streams, the one or more entry media switches operable to communicate with one or more endpoints; receiving a media stream from an endpoint of the one or more endpoints, the media stream comprising a sequence of packets, the sequence of packets comprising a keyframe; detecting the keyframe of the sequence of packets; marking the keyframe with a keyframe indicator, the keyframe indicator operable to notify a downstream device of the keyframe; and outputting an output media stream. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for marking a keyframe of a media stream in a communication system, comprising:
one or more entry media switches in communication with one or more endpoints, an entry media switch of the one or more entry media switches operable to; receive a media stream from an endpoint of the one or more endpoints, the media stream comprising a sequence of packets, the sequence of packets comprising a keyframe; detect the keyframe of the sequence of packets; mark the keyframe with a keyframe indicator, the keyframe indicator operable to notify a downstream device of the keyframe; and output an output media stream. - View Dependent Claims (8, 9, 10, 11, 12)
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13. Logic for marking a keyframe of a media stream in a communication system, the logic embodied in a computer-readable medium and operable to:
perform the following for each entry media switch of one or more entry media switches to yield one or more output media streams, the one or more entry media switches operable to communicate with one or more endpoints; receive a media stream from an endpoint of the one or more endpoints, the media stream comprising a sequence of packets, the sequence of packets comprising a keyframe; detect the keyframe of the sequence of packets; mark the keyframe with a keyframe indicator, the keyframe indicator operable to notify a downstream device of the keyframe; and output an output media stream. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A system for marking a keyframe of a media stream in a communication system, comprising:
means for performing the following for each entry media switch of one or more entry media switches to yield one or more output media streams, the one or more entry media switches operable to communicate with one or more endpoints; receiving a media stream from an endpoint of the one or more endpoints, the media stream comprising a sequence of packets, the sequence of packets comprising a keyframe; detecting the keyframe of the sequence of packets; marking the keyframe with a keyframe indicator, the keyframe indicator operable to notify a downstream device of the keyframe; and outputting an output media stream.
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20. A method for marking a keyframe of a media stream in a communication system, comprising:
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performing the following for each entry media switch of one or more entry media switches to yield one or more output media streams, the one or more entry media switches operable to communicate with one or more endpoints; receiving a media stream from an endpoint of the one or more endpoints, the media stream comprising a sequence of packets, the sequence of packets comprising a keyframe; detecting the keyframe of the sequence of packets; marking the keyframe with a keyframe indicator, the keyframe indicator operable to notify a downstream device of the keyframe, marking the keyframe with the keyframe indicator further comprising placing a particular value in a header extension of an upstream sequence number assigned to the keyframe; outputting an output media stream; receiving the one or more output media streams; combining the one or more output media streams to yield a combined stream; receiving a combined stream comprising the one or more output media streams, the combined stream comprising a plurality of packets of the one or more output media streams; and assigning each packet of the plurality of packets a downstream sequence number in accordance with the order of the plurality of packets in the combined stream; receiving the combined stream comprising the one or more output media streams, the combined stream comprising the one or more keyframe indicators of the one or more output media streams; and applying a reordering scheme to establish the order of the packets of the combined stream in accordance with the one or more keyframe indicators.
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Specification