Microsoft Technology Licensing, LLC

Mike Harsh

Donald D Karlov

Sam J George

Wenbo Zhang

Gilles Khouzam

Federico Schliemann

A system for video playback switching in response to changing network conditions. The system includes streaming, from a distribution device such as a server, respective index files for a low bit rate version and a high bit rate version of the video file, to remotely executing instantiations of a low bit rate media player and a high bit rate media. Playback of the video file is begun by the high bit rate media player receiving and playing the high bit rate version from the server. Upon an indication of impeded network conditions, a transition point is selected, wherein the transition point indicates where downloading of the high bit rate version stops and where downloading of the low bit rate version begins. The low bit rate media player is then positioned to begin playback at the transition point. The stream of the video file is then switched to the low bit rate player upon encountering the transition point.

System for adaptive video switching for variable network conditions

A method for video playback switching in response to changing network conditions. The method includes accessing a server to retrieve respective index files for a low bit rate version and a high bit rate version of the video file, and instantiating a low bit rate media player and a high bit rate media. Playback of the video file is begun by the high bit rate media player streaming the high bit rate version from the server. Upon an indication of impeded network conditions, a transition point is selected, wherein the transition point indicates where downloading of the high bit rate version stops and where downloading of the low bit rate version begins. The low bit rate media player is then positioned to begin playback at the transition point. Playback of the video file is then switched to the low bit rate player upon encountering the transition point.

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Redmond, WA, United States of America

Mike Harsh