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Transcoding mpeg bittstreams for adding sub-picture content

  • US 20050018770A1
  • Filed: 12/14/2002
  • Published: 01/27/2005
  • Est. Priority Date: 12/28/2001
  • Status: Active Grant
First Claim
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1. Method for merging encoded video picture data from a transport stream including a video bitstream and a sub-picture bitstream, comprising, digitally decoding said sub-picture bitstream, extracting position information for the video picture area that will be affected by the sub-picture, generating a merged bitstream consisting of unaltered encoded video data from the video bitstream in the area that remains unaffected by the sub-picture and newly encoded video data for the area where the sub-picture affects the video content in the picture.

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