Multi-layer approach for frame-missing concealment in a video decoder
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United States of America Patent
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Nov 29, 2016
Grant Date -
Jun 12, 2014
app pub date -
Dec 12, 2012
filing date -
Dec 12, 2012
priority date (Note) -
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Abstract
The invention relates to a method of concealing errors attributed to missing frames in a Motion Picture Expert Group-2 video stream, including the steps of: receiving a new frame for decoding and a “frame missing” flag that is set to a value associated with the occurrence of a missing frame, parsing the new frame to recover a picture type and a frame structure of the new frame, retrieving a picture type and a frame structure of a previous frame decoded immediately prior to the new frame, assigning a picture type and a frame structure to the missing frame based on the picture type and frame-structure values of the previous frame and the new frame and then applying an error concealment technique based upon the assigned picture type and frame structure of the missing frame.
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