This data for {TAIL ~ display} either may be included in the video data of the child frame video or parent frame video, or may be stored in {HEAD ~ management data} that is independent of the video data and handled with the video data during video transmission or distribution 
This data for { TAIL ~ display } either may be included in the video data of the child frame video or parent frame video , or may be stored in { HEAD ~ management data } that is independent of the video data and handled with the video data during video transmission or distribution
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