System and method for processing ancillary data associated with a video stream

摘要

Method and system for capturing and playing back ancillary data associated with a video stream. At capture, a first video stream and its associated non-audio ancillary data are received. The non-audio ancillary data associated with the first video stream is encoded into a first audio stream on a basis of a predefined encoding scheme. The captured non-audio ancillary data can then be transmitted and processed with the first video stream in the form of the first audio stream. At playback, a second video stream and a second audio stream containing encoded non-audio ancillary data associated with the second video stream are received. The second audio stream is decoded on a basis of a predefined decoding scheme in order to extract therefrom the non-audio ancillary data associated with the second video stream. The second video stream and its associated non-audio ancillary data are then both output for playback. This method of capture and playback enables a non-linear editing application that supports only video and audio data to receive, preserve, display to a user for editing purposes, and transmit unsupported non-audio ancillary data, since the latter is in the form of an audio stream.

主权项

1. A method for capturing ancillary data associated with a video stream, the method comprising:
a. receiving non-audio ancillary data associated with the video stream; b. encoding the non-audio ancillary data into at least one audio stream as a plurality of audio samples on a basis of a predefined encoding scheme; c. setting certain bits of said audio samples to predetermined values such that said at least one audio stream containing the encoded non-audio ancillary data has a recognizable waveform; and d. outputting the at least one audio stream to a non-linear video editing application.