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 video segments and separate audio segments of the media stream, wherein each of the audio segments comprises data representing a portion of each of the audio tracks available in the media stream; requesting one of the video segments identified by the digest; requesting a portion of an audio segment corresponding to a desired one of the plurality of audio tracks; receiving the requested video segment and the requested portion of the audio segment at the client device; and combining contents of the received video segment and the received portion of the audio segment by the client device to thereby render a portion of the media stream having the desired audio track for playback.