×

Dynamic bit rate adaptation over bandwidth varying connection

  • US 9,137,551 B2
  • Filed: 08/16/2011
  • Issued: 09/15/2015
  • Est. Priority Date: 08/16/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method for encoding a media file or part thereof for transmission in real time over a varying bandwidth link to a mobile unit, comprising:

  • employing at least one processor of a transcoder for;

    (i) encoding one or more fragments of the media file into transcoded media fragments to form a stream fragment;

    (ii) sending the stream fragment to a transmission buffer of the transcoder;

    (iii) determining an estimated transmit time of a previously formed stream fragment, the estimated transmit time being a time interval required for said previously formed stream fragment to be conveyed from the transmission buffer and consumed by the varying bandwidth link;

    (iv) determining an estimated display time of said previously formed stream fragment, the estimated display time being determined before said previously formed stream fragment is conveyed from the transmission buffer, the estimated display time being derived from timestamps embedded in two previously formed stream fragments; and

    (v) adjusting a current encoding rate of the transcoded media fragments as a function of the estimated transmit time and the estimated display time.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×