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Video stream modifier

  • US 8,363,714 B2
  • Filed: 12/19/2005
  • Issued: 01/29/2013
  • Est. Priority Date: 12/22/2004
  • Status: Active Grant
First Claim
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1. A device for modifying a compressed data stream to be decoded at a decoder, the compressed data stream being obtained by encoding a sequence of pictures comprising regions of pixels, the device comprising:

  • estimating means for estimating a decoding complexity required for decoding a picture from the compressed data stream; and

    modifying means for modifying the compressed data stream when the decoding complexity of the picture approaches a capacity of the decoder, characterized in that the modifying means are arranged to modify a method of decoding indicated in the compressed data stream;

    wherein the modifying means are arranged to select a region on the basis of a heuristic psycho-visual selection criterion and modify a method of decoding for said region.

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