Methods and apparatus for embedding and format conversion of compressed video data
AssigneeCisco Technology, Inc.
InventorsJi Zhang, Humphrey Liu
Life of this patent
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Abstract
System and methods are provided for modifying a compressed video data stream to match the available video decoding capability of a target decoder. Compressed video content can be embedded in another compressed bitstream to allow more efficient usage of available channel bandwidth. Format conversion allows flexible transmission of video content even if the original format and available decompression capabilities are mismatched.
Claims33
A network device for providing first compressed video data onto a network, the network device comprising:
- an embedder apparatus having a first embedder portion which embeds first compressed video data having a first compressed format in a transmission bitstream having a second compressed format;
- and
- a transmitter that transmits the transmission bitstream having the second compressed format, the transmission bitstream including the first compressed video data having the first compressed format.
A network device for providing compressed video data onto a network, the network device comprising:
- a compressed format converter that receives first compressed video data having a first compressed format and outputs the first compressed video data having a second compressed format;
- and
- an embedder which receives the first compressed video data and second compressed video data and embeds one of the first compressed video data and second compressed video data into the other of the first compressed video data and second compressed video data;
- and
- a transmitter configured to transmit the first and second compressed video data.
A method for providing compressed video data, the method comprising:
- embedding compressed video data having a first compressed format in a transmission bitstream having a second compressed format;
- and
- transmitting the transmission bitstream having the second compressed format and containing the compressed video data.
A network device for transmitting compressed video data, the network device comprising:
- means for receiving the compressed video data in a first compressed format;
- means for converting the compressed video data from the first compressed format to a second compressed format;
- means for embedding the compressed video data having the second compressed format in a transmission bitstream having a third compressed format;
- and
- means for transmitting the transmission bitstream having the third compressed format, the transmission bitstream including the compressed video data having the second compressed format.
A computer readable medium including instructions for method for providing compressed video data, the instructions comprising:
- instructions for embedding compressed video data having a first compressed format in a transmission bitstream having a second compressed format;
- and
- instructions for transmitting the transmission bitstream having the second compressed format and containing the compressed video data.
A network device for providing first compressed video data onto a network, the network device comprising:
- an embedder apparatus having a first embedder portion which embeds first compressed video data having a first video compression format in an MPEG bitstream, wherein the embedder portion embeds the first compressed video data in one of the program stream, transport stream, PES layer, and the private data in elementary stream layer of the MPEG bitstream;
- and
- a transmitter that transmits the MPEG bitstream, the MPEG bitstream including the first compressed video data having the first compression format.
Dependencies are inferred from the claim text.