WO2000001160A3 - Method and apparatus for splicing data streams - Google Patents

Method and apparatus for splicing data streams Download PDF

Info

Publication number
WO2000001160A3
WO2000001160A3 PCT/SE1999/001143 SE9901143W WO0001160A3 WO 2000001160 A3 WO2000001160 A3 WO 2000001160A3 SE 9901143 W SE9901143 W SE 9901143W WO 0001160 A3 WO0001160 A3 WO 0001160A3
Authority
WO
WIPO (PCT)
Prior art keywords
stream
point
data
points
data stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE1999/001143
Other languages
French (fr)
Other versions
WO2000001160A2 (en
Inventor
Roger Andersson
Lars Farm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIMT TECHNOLOGY AB
Original Assignee
LIMT TECHNOLOGY AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SE9802316A external-priority patent/SE9802316D0/en
Application filed by LIMT TECHNOLOGY AB filed Critical LIMT TECHNOLOGY AB
Priority to EP99933383A priority Critical patent/EP1095520A2/en
Priority to AU49446/99A priority patent/AU4944699A/en
Publication of WO2000001160A2 publication Critical patent/WO2000001160A2/en
Publication of WO2000001160A3 publication Critical patent/WO2000001160A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23424—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving management of server-side video buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23611—Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Television Systems (AREA)

Abstract

A method and apparatus for aligning in time, and subsequently splicing, first and second data streams representing first and second encoded signals, which streams have one or more in-points and out-points, meaning places in the streams at which it is safe to enter and leave without causing undesired loss of data. The method comprises the steps of receiving as input the first and the second data streams (1, 2), and initially transmitting as an output the first data stream (5); selecting an out-point in the first data stream (1) and an in-point in the second data stream (2); delaying or advancing the second data stream (2) in order to align the in-point and the out-point at a splice point in time; switching (6) to transmit as an output, said second data stream instead of said first data stream, at the time of said splice point. The invention is particularly suitable for the insertion of a second stream into a first stream, without requiring that the length of the second stream correspond to any distance between out-points and in-points of the first stream, by delaying or advancing the first stream when re-entering from the second stream. A variable delay is associated with the first stream, and is updated at the completion of every insertion cycle dependent on the delaying or advancing. Preferably the invention includes selecting an in-point in the first stream that will decrease the accumulated variable delay.
PCT/SE1999/001143 1998-06-29 1999-06-24 Method and apparatus for splicing data streams Ceased WO2000001160A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99933383A EP1095520A2 (en) 1998-06-29 1999-06-24 Method and apparatus for splicing data streams
AU49446/99A AU4944699A (en) 1998-06-29 1999-06-24 Method and apparatus for splicing data streams

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9802316A SE9802316D0 (en) 1998-04-06 1998-06-29 Image processing method and system
SE9802316-1 1998-06-29

Publications (2)

Publication Number Publication Date
WO2000001160A2 WO2000001160A2 (en) 2000-01-06
WO2000001160A3 true WO2000001160A3 (en) 2000-02-10

Family

ID=20411886

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/SE1999/001143 Ceased WO2000001160A2 (en) 1998-06-29 1999-06-24 Method and apparatus for splicing data streams
PCT/SE1999/001177 Ceased WO2000001161A2 (en) 1998-06-29 1999-06-29 Method and apparatus for splicing

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/001177 Ceased WO2000001161A2 (en) 1998-06-29 1999-06-29 Method and apparatus for splicing

Country Status (5)

Country Link
US (1) US7027516B2 (en)
EP (2) EP1095520A2 (en)
AU (2) AU4944699A (en)
DE (1) DE69919714T2 (en)
WO (2) WO2000001160A2 (en)

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Also Published As

Publication number Publication date
US20020041628A1 (en) 2002-04-11
AU4947499A (en) 2000-01-17
WO2000001161A3 (en) 2000-02-10
US7027516B2 (en) 2006-04-11
AU4944699A (en) 2000-01-17
EP1095521A2 (en) 2001-05-02
EP1095521B1 (en) 2004-08-25
DE69919714D1 (en) 2004-09-30
WO2000001160A2 (en) 2000-01-06
EP1095520A2 (en) 2001-05-02
WO2000001161A2 (en) 2000-01-06
DE69919714T2 (en) 2005-09-15

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