WO2000074388A1 - Procede de codage de signaux video numeriques et systeme de codage ou transcodage correspondant - Google Patents

Procede de codage de signaux video numeriques et systeme de codage ou transcodage correspondant Download PDF

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Publication number
WO2000074388A1
WO2000074388A1 PCT/EP2000/004213 EP0004213W WO0074388A1 WO 2000074388 A1 WO2000074388 A1 WO 2000074388A1 EP 0004213 W EP0004213 W EP 0004213W WO 0074388 A1 WO0074388 A1 WO 0074388A1
Authority
WO
WIPO (PCT)
Prior art keywords
video
bitrate
audio
parameter
bitstream
Prior art date
Application number
PCT/EP2000/004213
Other languages
English (en)
Inventor
Etienne Fert
Original Assignee
Koninklijke Philips Electronics N.V.
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
Application filed by Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Priority to EP00931173A priority Critical patent/EP1101360A1/fr
Priority to JP2001500560A priority patent/JP4508503B2/ja
Publication of WO2000074388A1 publication Critical patent/WO2000074388A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/115—Selection of the code volume for a coding unit prior to coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • 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
    • H04N21/2365—Multiplexing of several video streams
    • H04N21/23655—Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Definitions

  • Digital video signals coding method and corresponding coding or transcoding system Digital video signals coding method and corresponding coding or transcoding system.
  • the present invention relates to a method for transmitting a constant bitrate digital video bitstream corresponding to n multiplexed variable bitrate coded video bitstreams, comprising the steps of :
  • n digital video signals have to be transmitted through an identical number of channels having a predetermined global allocated bitrate.
  • a coding apparatus of this type is described for instance in the document EP 0685971.
  • This apparatus comprises a plurality of encoders, for coding the input video signals at variable rates, and a bit allocating stage, supplied with estimated information coming from the encoders and provided for sending back to the encoders, on the basis of said information, an indication of an allowed allocation of bits.
  • a digital video signals coding system carrying out the method according to the invention is illustrated in FigJ. It comprises n parallel encoding channels, including variable bitrate video encoders 110a to 1 lOn. Each of these encoders receives a respective video signal to be encoded, said signal being in fact a bitstream of data that have been previously subdivided into blocks of pixels, DCT transformed and quantized. These n input video signals are referenced EN(1) to EN(n), and the n output signals of the encoders are referenced N(l) to N(n). These n output signals are coded bitstreams sent with a variable bitrate towards a multiplexer 20, the output of which is a single coded bitstream S with a fixed bitrate. Said bitrate is the limited bitrate allowed by the transmission channel, referenced 100.
  • a rate controller 30 is then provided in order to receive from each encoder 110a to 1 lOn one or several specific parameters associated to each video signal processed by each respective encoder and to send back to said encoders specific signals for controlling the bitrate allocation of these encoders on the basis of these specific parameters and with the object of being in accordance with the bitrate allowed in the transmission channel.
  • the requested bitrate corresponding to that evaluation is obtained by controlling the quantizer step size of each encoding channel.
  • the audio signals that accompany the video signals and have also to be transmitted are also sent towards the rate controller 30 and participate in the allocation of the bitrate in each channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Television Systems (AREA)

Abstract

L'invention porte sur un procédé de transmission d'un flux binaire vidéo correspondant à n flux binaires vidéo codés à débit binaire variable multiplexé, alors que les flux binaires audio codés sont associés à des flux binaires vidéo parallèles. Selon le procédé de cette invention, un ou plusieurs paramètres audio sont définis à partir de flux binaires audio, et les affectations de débit binaire respectivement associées aux flux binaires vidéo parallèles sont chacune pondérées par un paramètre de pondération correspondant respectivement à chaque paramètre audio.
PCT/EP2000/004213 1999-05-26 2000-05-04 Procede de codage de signaux video numeriques et systeme de codage ou transcodage correspondant WO2000074388A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00931173A EP1101360A1 (fr) 1999-05-26 2000-05-04 Procede de codage de signaux video numeriques et systeme de codage ou transcodage correspondant
JP2001500560A JP4508503B2 (ja) 1999-05-26 2000-05-04 デジタルビデオ信号の符号化方法及び対応する符号化システム又はトランスコーディングシステム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99401261 1999-05-26
EP99401261.5 1999-05-26

Publications (1)

Publication Number Publication Date
WO2000074388A1 true WO2000074388A1 (fr) 2000-12-07

Family

ID=8241983

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/004213 WO2000074388A1 (fr) 1999-05-26 2000-05-04 Procede de codage de signaux video numeriques et systeme de codage ou transcodage correspondant

Country Status (5)

Country Link
EP (1) EP1101360A1 (fr)
JP (1) JP4508503B2 (fr)
KR (1) KR100721272B1 (fr)
CN (1) CN1192633C (fr)
WO (1) WO2000074388A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1942594A3 (fr) * 2007-01-08 2011-08-17 General instrument Corporation Procédé et dispositif pour le multiplexage statistique de services

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665693A2 (fr) * 1993-12-28 1995-08-02 Matsushita Electric Industrial Co., Ltd. Méthode de contrôle dynamique de débit de bits pour un codage à très bas débit de vidéo et audio associé
EP0685971A2 (fr) * 1994-05-25 1995-12-06 Sony Corporation Appareil de codage d'images vidéo comprenant plusieurs codeurs
US5627581A (en) * 1993-06-08 1997-05-06 Sony Corporation Encoding apparatus and encoding method
EP0784409A2 (fr) * 1996-01-11 1997-07-16 Sony Corporation Codage et multiplexage de signaux vidéo
WO1997039584A1 (fr) * 1996-04-12 1997-10-23 Imedia Corporation Transcodeur video
US5805220A (en) * 1995-02-22 1998-09-08 U.S. Philips Corporation System for transmitting a plurality of video programs simultaneously through a transmission channel
US5892884A (en) * 1991-06-07 1999-04-06 Mitsubishi Denki Kabushiki Kaisha Apparatus for controlling a sum of a varying information amount of a video signal and a varying information amount of an audio signal so that the sum is within a predetermined amount of data range
EP0915623A1 (fr) * 1997-11-06 1999-05-12 Thomson Broadcast Systems Dispositif de traitement de données vidéo codées et systèmes de distribution de programmes utilisant un tel dispositif

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0784409A (ja) * 1993-09-13 1995-03-31 Kao Corp 乾式現像剤
US5541852A (en) * 1994-04-14 1996-07-30 Motorola, Inc. Device, method and system for variable bit-rate packet video communications
WO1997007606A1 (fr) * 1995-08-16 1997-02-27 Starguide Digital Networks, Inc. Affectation dynamique des bandes de frequences pour la transmission de signaux audio et d'un signal video
US20020154694A1 (en) * 1997-03-21 2002-10-24 Christopher H. Birch Bit stream splicer with variable-rate output
WO1999020051A1 (fr) * 1997-10-15 1999-04-22 Sony Corporation Multiplexeur de donnees video, procede de controle du multiplexage de donnees video, procede et appareil pour multiplexer un flux code ainsi que procede et appareil de codage
KR100784409B1 (ko) * 2006-11-27 2007-12-12 포아센산업 주식회사 휘발성 유기화합물 농축 촉매 연소 시스템 및 방법

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5892884A (en) * 1991-06-07 1999-04-06 Mitsubishi Denki Kabushiki Kaisha Apparatus for controlling a sum of a varying information amount of a video signal and a varying information amount of an audio signal so that the sum is within a predetermined amount of data range
US5627581A (en) * 1993-06-08 1997-05-06 Sony Corporation Encoding apparatus and encoding method
EP0665693A2 (fr) * 1993-12-28 1995-08-02 Matsushita Electric Industrial Co., Ltd. Méthode de contrôle dynamique de débit de bits pour un codage à très bas débit de vidéo et audio associé
EP0685971A2 (fr) * 1994-05-25 1995-12-06 Sony Corporation Appareil de codage d'images vidéo comprenant plusieurs codeurs
US5805220A (en) * 1995-02-22 1998-09-08 U.S. Philips Corporation System for transmitting a plurality of video programs simultaneously through a transmission channel
EP0784409A2 (fr) * 1996-01-11 1997-07-16 Sony Corporation Codage et multiplexage de signaux vidéo
WO1997039584A1 (fr) * 1996-04-12 1997-10-23 Imedia Corporation Transcodeur video
EP0915623A1 (fr) * 1997-11-06 1999-05-12 Thomson Broadcast Systems Dispositif de traitement de données vidéo codées et systèmes de distribution de programmes utilisant un tel dispositif

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1942594A3 (fr) * 2007-01-08 2011-08-17 General instrument Corporation Procédé et dispositif pour le multiplexage statistique de services

Also Published As

Publication number Publication date
KR20010072067A (ko) 2001-07-31
JP2003501903A (ja) 2003-01-14
KR100721272B1 (ko) 2007-05-25
CN1192633C (zh) 2005-03-09
CN1310923A (zh) 2001-08-29
JP4508503B2 (ja) 2010-07-21
EP1101360A1 (fr) 2001-05-23

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