CHUNKING OF MULTIPLE TRACK AUDIO FOR ADAPTIVE BIT RATE STREAMING

摘要

Systems, devices and methods are provided to support multiple audio tracks in an adaptive media stream. Segments of the adaptive stream are encoded so that the player is able to locate and request a specific one of the available audio tracks using byte range requests or the like. Audio content can be removed from video segments, or at least moved to the end of the segments so that a byte range request obtains just the video content when the default audio is not desired. The audio content can be obtained from a separate audio segment. Indeed, multiple audio tracks can be packaged into a common audio segment so that byte range requests can obtain just the particular audio track desired.

主权项

1. A method executable by a client device to playback an adaptive media stream having a plurality of audio tracks, the method comprising:
receiving a digest of the media stream at the client device that describes a series of data files representing the media stream, wherein at least some of the data files comprise portions of each of the plurality of audio tracks of the adaptive media stream; requesting, by the client device, portions of at the data files to thereby obtain audio segments corresponding to a desired one of the plurality of audio tracks, wherein the requested portions are each less than the entire data file; and rendering the obtained audio segments for playback so that the media stream is presented for playback with the desired one of the plurality of audio tracks.