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FAST AND SMART VIDEO TRIMMING AT FRAME ACCURACY ON GENERIC PLATFORM

  • US 20150269967A1
  • Filed: 05/22/2014
  • Published: 09/24/2015
  • Est. Priority Date: 03/24/2014
  • Status: Active Grant
First Claim
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1. One or more computer-readable media storing computer-executable instructions for causing a computing system programmed thereby to perform a method comprising:

  • receiving media content comprising a stream of pictures comprising clear start pictures and other pictures;

    receiving a target range extending from a target range starting point to a target range ending point within the stream of pictures and specifying at least one desired picture from which other pictures in the stream of pictures will be trimmed;

    determining a first clear start picture preceding the target range starting point and a second clear start picture following the target range starting point;

    decoding the media content from the first clear start picture to the second clear start picture;

    re-encoding the media content in a leading portion of the target range defined from the target range starting point to the second clear start picture;

    determining a third clear start picture preceding the target range ending point;

    re-muxing pictures in a middle portion defined to extend from the second clear start picture to the third clear start picture;

    determining a fourth clear start picture following the target range ending point;

    decoding the media content from the third clear start picture to the fourth clear start picture;

    re-encoding the media content in a trailing portion from the third clear start picture to the target range ending point; and

    reassigning timing designations of the pictures in the target range so that the target range plays back sequentially.

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