Method and arrangement for video transcoding using mode or motion or in-loop filter information

Patent metadata

Field	Value
Publication number	US-2016255355-A1
Application number	US-201315028479-A
Country	US
Kind code	A1
Filing date	Oct 11, 2013
Priority date	Oct 11, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

In a method of transcoding of a video bitstream by a transcoder arrangement, performing the steps of receiving (S 10 ) a video bitstream with a predetermined input video format, receiving (S 20 ) side information related to the video bitstream, the side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for the video bitstream. Further, performing the steps of decoding (S 40 ) the received side information to generate transcoding guiding information, and encoding (S 50 ) a representation of the received video bitstream based at least on the generated transcoding guiding information, to provide a transcoded video bitstream with a predetermined output video format.

First claim

1 - 36 . (canceled)

37 . A method of transcoding of a video bitstream by a transcoder arrangement, comprising:
receiving a video bitstream with a predetermined input video format; receiving side information related to said video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream; decoding said received side information to generate transcoding guiding information; and encoding a representation of said received video bitstream based at least on said generated transcoding guiding information, to provide a transcoded video bitstream with a predetermined output video format.

38 . A transcoder arrangement for transcoding of a video bitstream, comprising:
a video receiver configured for receiving a video bitstream with a first predetermined input video format; at least one side information utilization unit comprising:
a side information receiver configured for receiving side information related to said video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream, and
a side information decoder configured for decoding said received side information to generate transcoding guiding information; and
an encoder configured for encoding a representation of said received video bitstream based at least on said generated transcoding guiding information, to provide a transcoded video bitstream with a predetermined output video format.

39 . The transcoder arrangement according to claim 38 , wherein said side information decoder is configured for decoding said received side information based on at least one of mode or motion or in-loop filter information received in said video bitstream, and said encoder is configured for encoding said representation of said received video bitstream based at least on at least one of said decoded mode or motion or in-loop filter information.

40 . The transcoder arrangement according to claim 39 , wherein said mode or motion or in-loop filter information is down sampled prior to decoding, and said encoder is configured to decode said representation based on said down sampled mode or motion or in-loop filter information.

41 . The transcoder arrangement according to claim 38 , comprising a video decoder configured for decoding said received video bitstream to provide pixel data as said representation of said received video bitstream.

42 . The transcoder arrangement according to claim 41 , wherein said video decoder is configured for decoding a high resolution layer of said video bitstream to obtain high resolution pixel data and down sampling said high resolution pixel data to a desired low resolution, and said side information decoder is configured for decoding the mode and/or motion and/or in-loop filter data for said desired low resolution, and said encoder is configured for encoding said down sampled pixel data based on said decoded low resolution mode and/or motion and/or in-loop filter data.

43 . The transcoder arrangement according to claim 38 , wherein said side information further comprising residual information related to said predetermined input video format.

44 . The transcoder arrangement according to claim 38 , wherein said side information further comprising data indicating search ranges of coding parameters to further enhance the transcoding.

45 . A network node comprising a transcoder arrangement for transcoding of a video bitstream, comprising:
a video receiver configured for receiving a video bitstream with a first predetermined input video format; at least one side information utilization unit comprising:
a side information receiver configured for receiving side information related to said video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream, and
a side information decoder configured for decoding said received side information to generate transcoding guiding information; and
an encoder configured for encoding a representation of said received video bitstream based at least on said generated transcoding guiding information, to provide a transcoded video bitstream with a predetermined output video format.

46 . A user equipment comprising a transcoder arrangement for transcoding of a video bitstream, comprising:
a video receiver configured for receiving a video bitstream with a first predetermined input video format; at least one side information utilization unit comprising:
a side information receiver configured for receiving side information related to said video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream, and
a side information decoder configured for decoding said received side information to generate transcoding guiding information; and
an encoder configured for encoding a representation of said received video bitstream based at least on said generated transcoding guiding information, to provide a transcoded video bitstream with a predetermined output video format.

47 . A method for providing an encoded video bitstream, comprising:
encoding a provided video bitstream with a predetermined video format; generating side information related to said encoded provided video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream, to enable transcoding by:
receiving a video bitstream with a predetermined input video format;
receiving side information related to said video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream;
decoding said received side information to generate transcoding guiding information; and
encoding a representation of said received video bitstream based at least on said generated transcoding guiding information, to provide a transcoded video bitstream with a predetermined output video format; and
transmitting said encoded video bitstream and said generated side information.

48 . An arrangement for providing a video bitstream, comprising:
an encoder configured for encoding a video bitstream with a predetermined video format; a side information generator configured for generating side information related to said video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream, to enable transcoding in a transcoder arrangement comprising: a video receiver configured for receiving a video bitstream with a first predetermined input video format; at least one side information utilization unit comprising:
a side information receiver configured for receiving side information related to said video bitstream, said side information comprising at least one of mode or motion or in-loop filter information relating to at least one other predetermined video format for said video bitstream, and
a side information decoder configured for decoding said received side information to generate transcoding guiding information; and
an encoder configured for encoding a representation of said received video bitstream based at least on said generated transcodi

Assignees

• Ericsson Telefon Ab L M
• ERICSSON TELEFON AB L M (publ)

Inventors

• Andersson Kenneth
• Rusert Thomas
• Sjöberg Rickard

Classifications

• H04N19/40 Primary

  using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream · CPC title

• H04N19/197

  including determination of the initial value of an encoding parameter (H04N19/56 takes precedence) · CPC title

• H04N19/157

  Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter · CPC title

• H04N19/46

  Embedding additional information in the video signal during the compression process (H04N19/517, H04N19/68, H04N19/70 take precedence) · CPC title

• H04N19/59

  involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution · CPC title