Method for embedding and multiplexing audio metadata in a broadcasted analog video stream

摘要

A method for embedding, multiplexing and broadcasting of multiple audio metadata in an analog video stream and thereby generating output analog video containing multiple separable audio-video tuples of optimum quality. Further, a user study is performed on a sample tutorial video for various frame rates and resolution to calculate the mean opinion score for deriving the degree of multiplexing that may be provided without deteriorating the quality of video.

主权项

1. A method for multiplexing and broadcasting a plurality of video streams by embedding one or more digital audio parts in at least one video stream of the plurality of video streams, the method comprising:
receiving a plurality of sets of spatially multiplexed video streams, wherein a frame rate of each video stream of the plurality of sets of spatially multiplexed video streams is reduced to half of an original frame rate; generating an audio data bit and an audio pilot bit using metadata associated with one or more digital audio parts; converting the audio data bit into an audio data symbol and the audio pilot bit into an audio pilot symbol; embedding the audio data symbol and the audio pilot symbol into a video frame of a video stream of the plurality of sets of spatially multiplexed video streams; embedding each digital audio part into respective video streams of the plurality of sets of spatially multiplexed video streams, wherein each digital audio part, corresponding to a respective video stream, is to be retrieved at a receiving device using the audio data symbol and the audio pilot symbol; multiplexing, in a temporal domain, the plurality of sets of spatially multiplexed video streams comprising the one or more digital audio parts, the audio data symbol and the audio pilot symbol, so embedded, to generate an elementary video stream thereby achieving the original frame rate; and broadcasting the elementary video stream via a single video channel.