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I need to synchronize some data into a video that is being recorded from a live stream. For example, including the time and location of each frame of the stream and then recording it on a frame by frame basis into a video file. This data is to be later extracted from the recorded video file.. From what i understand, textoverlay adds text onto the video itself, and the information can't be easily extracted apart from visually reading it off the video. How can I go about achieving this, do I have to record the info as another "stream" in the video apart from video and audio stream?
Also, does the video container format matters in this case, as in would it be restricted by the video format as to whether it can store additional data besides audio and video in the file? The video formats i'm working around on are .mp4, .ogg and .avi.
Thanks.
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