Proposed herein is a technique to reduce the time to obtain an I-frame for video conferencing participants that are unable to decode video stream(s) of the main active speaker(s) by decoding video stream(s) of the main active speaker(s) at a Selective Forwarding Unit (SFU) and re-encoding the video stream(s) using only I-frames. The technique also provides for the ability reduce network traffic by unicasting the I-frames only to participants that may need the I-frames, rather than broadcasting the I-frames to all participants.
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Samain, Jacques; Hawari, Mohammed; and Surcouf, Andre, "METHOD FOR FAST BOOTSTRAP AND LOSS RECOVERY FOR CLIENTS CONNECTED TO A SELECTIVE FORWARDING UNIT (SFU)", Technical Disclosure Commons, (January 22, 2020)