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Filter and method for adaptively modifying the bit rate of synchronized video and audio streams to meet packet-switched network bandwidth constraints

  • US 6,747,991 B1
  • Filed: 04/26/2000
  • Issued: 06/08/2004
  • Est. Priority Date: 04/26/2000
  • Status: Expired due to Fees
First Claim
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1. A filter for adaptively modifying a bit rate of a synchronized video and audio stream transmitted over a packet-switched network to a receiver, comprising:

  • a layer detection module for detecting encoded video frames in the stream;

    an adaptive frame removal module in communication with the layer detection module for removing certain of the encoded video frames based on a bandwidth condition of the network; and

    a network packetizing and pacing module in communication with the adaptive frame removal module for packetizing the modified stream into network packets and for pacing transmission of the packets of the modified stream over the network, wherein one of the packets includes information regarding the frame removal rate of the adaptive frame removal module.

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