WO2009106683A1 - Appareil, procédé, progiciel et système permettant le codage de flux de données vidéo - Google Patents

Appareil, procédé, progiciel et système permettant le codage de flux de données vidéo Download PDF

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Publication number
WO2009106683A1
WO2009106683A1 PCT/FI2009/050147 FI2009050147W WO2009106683A1 WO 2009106683 A1 WO2009106683 A1 WO 2009106683A1 FI 2009050147 W FI2009050147 W FI 2009050147W WO 2009106683 A1 WO2009106683 A1 WO 2009106683A1
Authority
WO
WIPO (PCT)
Prior art keywords
video clips
video
format
clips
terminal
Prior art date
Application number
PCT/FI2009/050147
Other languages
English (en)
Inventor
Mikael Kopteff
Alexander Bethke
Minna Bloigu
Kai Lemmetty
Joonas Pekkanen
Jami Pekkanen
Original Assignee
Floobs Oy
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 Floobs Oy filed Critical Floobs Oy
Publication of WO2009106683A1 publication Critical patent/WO2009106683A1/fr

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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/654—Transmission by server directed to the client
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • 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
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/2187—Live feed
    • 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
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/23439—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements for generating different versions
    • 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
    • H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6181—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via a mobile phone network
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests

Definitions

  • the invention concerns an apparatus for encoding a video stream. Furthermore, the invention concerns a method for encoding a video stream. Even furthermore, the invention concerns a computer program product for encoding a video stream. Furthermore, the invention concerns a system for encoding a video stream.
  • Next generation mobile terminals such as mobile phones with camera are just now entering the market with the prerequisite processing power to provide real-time encoding of video.
  • the platform to enable a live broadcast can now fit into the pocket of the user.
  • ComVu PocketCaster streams video from a mobile phone to user's video blog or homepage. Video streams are simultaneously archived on a server, thereby others can watch live or at any time. System operates on a PC, Mac or their mobile phone.
  • PocketCaster overcomes the limitations of MMS. PocketCaster provides a one-to-many broadcasting service, which means user can share video streams to many others.
  • PocketCaster lets user notify contacts, live "on air”, add tags to your videos, and track your video streams using dynamic geo-tagging and online maps. Similar known solution come from Qik, ComVu, Kyte or Viif.
  • an apparatus comprising:
  • a receiver configured to receive two or more video clips in a first format from a mobile terminal
  • a storage configured to store the two or more video clips
  • an encoder configured to encode the two or more video clips from the first format into a second format
  • a transmitter configured to stream the two or more video clips in the second format for transmission to a terminal so that the video stream containing the two or more video clips can be played seamlessly.
  • At least one mobile terminal configured to transmit two or more video clips in a first format to a server
  • the server configured to receive the two or more video clips
  • the server further configured to store the two or more video clips
  • an encoder configured to encode the two or more video clips from the first format to a second format
  • the server further configured to stream the two or more video clips in the second format for transmission to a terminal so that the video stream containing the two or more video clips can be played seamlessly at said terminal.
  • Various embodiments of the invention provide versatility of mobile terminals with video streaming capability.
  • Mobile terminal can therefore send video to various kinds of terminals independently of the platform of the terminals. This allows better interoperability, and better use and applicability of the mobile video.
  • Various embodiments of the invention disclose a system for distributing video from a mobile terminal so that, in addition to a mobile phone with specific software platform, various different terminals can be used.
  • various embodiments can be flexibly applied in various terminals, e.g. many kinds of mobile phones with various software platforms.
  • the system has been implemented by a platform independent programming language such as Java or the like. Java technology is widely supported by various terminal manufacturers.
  • the platform independent programming language the system is operable in various terminals, for example enabling further co-operation with operators. Some operates require wide enough interoperability for the terminals, e.g. not just merely Symbian technology, for the provision of the applications to the users.
  • Figure 1 depicts a block diagram of a system for encoding a video stream according to an embodiment of the invention
  • Figure 2 depicts a block diagram of a system for encoding a video stream according to a further embodiment of the invention
  • Figure 3 depicts a block diagram of a system for encoding a video stream, wherein the server contains an encoder according to a further embodiment of the invention
  • Figure 4 depicts an example of a block diagram of a server for encoding a video stream according to an embodiment of the invention
  • Figure 5 depicts an example of a flow chart for encoding a video stream according to an embodiment of the invention.
  • Various embodiments of the invention provide an apparatus for providing video stream conveniently to various terminals.
  • Various embodiments of the invention are based on a streaming protocol or the like, wherein the apparatus, for example a server, is being sent relatively small video clips instead of continuing streaming transmission.
  • the streaming protocol does not necessary refer to any specific or actual protocol.
  • the clips are encoded into a format required by various terminals and streamed to the terminal receiving the stream.
  • the apparatus is monitoring the connection speed and quality between the terminal , wh ich send the cl ips to the apparatus, and the apparatus itself.
  • the apparatus commands or instructs the terminal, which sends the clips to the apparatus, for encoding and packing the video and audio.
  • FIG. 1 there is being depicted a block diagram of a system for encoding a video stream according to an embodiment of the invention.
  • the system comprises a mobile terminal 100, an apparatus 102 such as a server, mediaserver or the like, a terminal 101 and an encoding system 103.
  • various embodiments of the invention supports various kinds of terminals 101 capable thereby receiving the mobile video, for example the terminal 101 may be a computer, a mobile phone, a digital television, or a vehicle receiver, etc.
  • Streaming live transmission starts at the mobile terminal 100, when for example user starts to shoot the video by the mobile terminal 100 containing a client application 110 for the video shooting.
  • the client application 110 can be Floobs mobile client application (FMC) for example.
  • the client application 110 starts to send relatively short video clips to the apparatus 102 (the step 200).
  • the video clips are sent in a terminal dependent packing format. Few non-limiting examples of such formats are 3gp, mp4 or the like.
  • Video clips are as such complete, although the video clips are relatively short, for example having the length of 5 s. Other lengths may be used as well such as 1 s or less than 1 s, even up to several seconds, like nearly 60 s or more.
  • Each video clip comprises a header, or a header data.
  • the video clips are not so-called streaming packets like there is in the traditional video streaming.
  • the apparatus 102 receives the video clips.
  • the apparatus 102 stores the video clips into a temporary storage buffer (not shown), for example into disk storage, RAM memory or the like.
  • the buffer may be shared disk storage or the like.
  • the storage may be within the apparatus 102 or be separated from the apparatus 102.
  • the apparatus 102 may instruct or command the mobile terminal 100 on adjusting the quality of the video and audio according to the data connection between the mobile terminal 100 and the apparatus 102 (the step 201 ).
  • the apparatus 102 requests an encoding system 103 to process the stored video clips.
  • the encoding system 103 starts to process the stored video clips and encodes the video clips so that the format is amended (the steps 203, 204), for example to .flv video format or the like.
  • the encoding system 103 stores the encoded video stream into the buffer memory or disk storage.
  • the apparatus 102 establishes a video stream transmission from the encoded video stream (the step 205).
  • the stream can be established from the encoded video clips so that the clips are played one after another seamlessly.
  • the video stream transmission may be a live transmission, the apparatus 102 and the system is thus capable of processing the video at the required speed of live transmission or the feeling of a live transmission.
  • the another terminal 101 receives the video stream transmission that the apparatus 102 is providing and transmitting (the step 205).
  • the apparatus 102 along with sending the first video clip (for example reference 200) there is being established at the apparatus 102 a session and readiness, by the guidance of which any related video clip conning from the same terminal can be identified as being related.
  • the session is renewed at the apparatus 102.
  • the termination of the video transmission can be identified, for example as follows.
  • the transmitting terminal 100 informs the apparatus 102 that the transmission of the video clips is over.
  • the apparatus 102 is also monitoring the reception of the video clips and may consider that the transmission has ended, unless there is not being received any new video clips within a predetermined time, for example 15 s etc. This is considerable in the case of failures. For example, when the client application 110 shuts-down abnormally or unintentionally, or the battery of the terminal 100 ends during the transmission of the clips, etc.
  • the establishment of the video stream takes place by collecting the encoded video clips into the buffer and creating a playl ist from the buffered video cl ips, on a basis of which the establishment of the video stream to/at the apparatus 102 takes place.
  • the video clips are played seamlessly one after another clip, thereby establishing a feeling of seamless live video stream for the user.
  • a buffering clip is being transmitted to the terminal 101 for presentation.
  • the buffering clip for example, announces to the user that there is delay or the like in the transmission, and that you have to wait for a moment for continuance of the transmission.
  • the apparatus 102 has played and transmitted the buffering clip it checks again whether the following clip can be played, etc.
  • the client application 110 is configured to use the fastest available data connection between the mobile terminal 100 and the apparatus 102.
  • the transmitted video clips have weakest default quality (for example regarding the resolution, sound quality).
  • the apparatus 102 monitors (on a basis of the timestamp of the video clips) how fast the video clips are transmitted, i.e. the time of reception of the clips at the apparatus 102, thereby concluding how fast the data connection is. If the connection enables, the apparatus 102 suggests to the mobile terminal 100 to start using better video and sound quality.
  • Figure 2 depicts a block diagram of a system for encoding a video stream according to a further embodiment of the invention.
  • Figure 2 depicts an example of various implementations of many embodiments of the invention.
  • Figure 3 depicts a block diagram of a system for encoding a video stream, wherein the server 102" contains an encoder 103" according to a further embodiment of the invention.
  • the system contains a router 105,105, or the like and a base station 104,104' or the like.
  • Various different terminals 101 ',101 " can receiver the video stream.
  • FIG. 4 depicts an example of a block diagram of a server for encoding a video stream according to an embodiment of the invention.
  • the apparatus 102 comprises a transceiver 107 configured to receive data from mobile terminal 100. Furthermore the transceiver 107 is configured to transmit data to mobile terminal 100. For example transceiver 107 can receive video clips. Furthermore the transceiver 107 can send information about the quality of the connection or the quality of the received video clips etc.
  • the apparatus 102 comprises CPU for processing data.
  • the apparatus 102 comprises storage 106, for example a buffer memory for storing the video clips.
  • the storage 106 can be a shared disk storage or memory, to which the apparatus 102 and the encoder 103 can read and write.
  • the apparatus 102 may command the encoder 103, however the clips are stored at the storage 106.
  • the encoder 103 may be a separate from the apparatus 102 or within the apparatus 102.
  • the storage may be separate from the apparatus 102 or within the apparatus 102. Therefore the apparatus 102 may in some further embodiments contain the encoder 103 configured to encode the video clips from the first format, e.g. a format of the mobile terminal, to second format, e.g. video streaming format or the like.
  • An example of the video format can be .flv or the like, and there are various other formats.
  • the apparatus 102 may also be without the encoder 103.
  • Figure 5 depicts an example of a flow chart for encoding a video stream according to an embodiment of the invention.
  • a method comprises in the step 300 receiving two or more video clips in a first format from a mobile terminal.
  • the step 301 there is being stored the two or more video clips.
  • the step 302 there is being encoded the two or more video clips from the first format to a second format.
  • the step 303 there is being generated seamless video stream.
  • the stream is generated from the two or more video clips in the second format.
  • the step 304 there is being transmitted the video stream to a terminal so that the video stream containing the two or more video clips can be played seamlessly at the terminal.
  • a further embodiment of the invention comprises clip sequencing.
  • the client such as the mobile terminal 100 adds an ascending index into each header of each video clip.
  • the apparatus 102 received the clip with the header containing the index.
  • the apparatus 102 can identify whether the video clips are received in proper order.
  • the apparatus 102 can fix and alter the order if necessary.
  • the apparatus 102 can wait for appropriate video clip before making the stream although there are other video clips waiting for the streaming. Alternatively the video clip missing can be omitted by the apparatus 102.
  • a further embodiment of the invention comprises an ability to fix corrupted video clips.
  • the encoder 103 can identify the video clip, which is corrupted. For example identifies a corrupted frame at the beginning of the video clip.
  • the corrupted beginning of the video clip can be replaced with, for example the last frame of the previous video clip, thereby making the video stream to appear substantially seamless.
  • a Java based application (not shown) can be installed into the terminal.
  • the application may automatically provide Symbian based additional component beside the client application 1 10.
  • the live transmission can thereby be better optimized to those terminals, having better technical characteristics for live video transm ission .
  • Java provides interoperability between various kinds of terminals, not just specifically Symbian or

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Selon divers modes de réalisation, la présente invention concerne un appareil permettant la fourniture pratique d’un flux de données vidéo vers divers terminaux. Divers modes de réalisations reposent sur un protocole de diffusion en continu ou analogue, selon lesquels on transmet à l’appareil, par exemple un serveur, des clips vidéo de taille relativement réduite au lieu d’une transmission de diffusion continue. Le protocole de diffusion en continu ne fait pas nécessairement référence à un protocole spécifique ou réel. Par conséquent, au niveau de l’appareil les clips sont codés dans un format requis par divers terminaux et diffusés en continu vers le terminal recevant le flux. L’appareil assure le contrôle de la vitesse et de la qualité de la connexion entre le terminal, qui transmet les clips à l’appareil, et l’appareil lui-même. En outre, l’appareil commande ou instruit le terminal, qui transmet les clips vers l’appareil, pour le codage et la compression des données vidéo et audio.
PCT/FI2009/050147 2008-02-25 2009-02-24 Appareil, procédé, progiciel et système permettant le codage de flux de données vidéo WO2009106683A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20080150A FI20080150L (fi) 2008-02-25 2008-02-25 Laitteisto, menetelmä, tietokoneohjelmatuote ja järjestelmä videovirran koodaamiseksi
FI20080150 2008-02-25

Publications (1)

Publication Number Publication Date
WO2009106683A1 true WO2009106683A1 (fr) 2009-09-03

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Application Number Title Priority Date Filing Date
PCT/FI2009/050147 WO2009106683A1 (fr) 2008-02-25 2009-02-24 Appareil, procédé, progiciel et système permettant le codage de flux de données vidéo

Country Status (2)

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FI (1) FI20080150L (fr)
WO (1) WO2009106683A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996015A (en) * 1997-10-31 1999-11-30 International Business Machines Corporation Method of delivering seamless and continuous presentation of multimedia data files to a target device by assembling and concatenating multimedia segments in memory
US20020141740A1 (en) * 2001-03-29 2002-10-03 Yoshinori Matsui Data reproduction apparatus and data reproduction method
US20040119814A1 (en) * 2002-12-20 2004-06-24 Clisham Allister B. Video conferencing system and method
US20060029051A1 (en) * 2004-07-30 2006-02-09 Harris John C System for providing IP video telephony
WO2006058544A1 (fr) * 2004-11-30 2006-06-08 Telefonaktiebolaget Lm Ericsson (Publ) Procede de distribution de fichiers multimedia
WO2006086717A1 (fr) * 2005-02-11 2006-08-17 Vidiator Enterprises Inc. Procede pour service de transmission en continu de fichiers multiples via une liste de diffusion dans un environnement mobile et son systeme
US20070276917A1 (en) * 2006-05-25 2007-11-29 Sony Ericsson Mobile Communications Ab Buffering streaming content

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996015A (en) * 1997-10-31 1999-11-30 International Business Machines Corporation Method of delivering seamless and continuous presentation of multimedia data files to a target device by assembling and concatenating multimedia segments in memory
US20020141740A1 (en) * 2001-03-29 2002-10-03 Yoshinori Matsui Data reproduction apparatus and data reproduction method
US20040119814A1 (en) * 2002-12-20 2004-06-24 Clisham Allister B. Video conferencing system and method
US20060029051A1 (en) * 2004-07-30 2006-02-09 Harris John C System for providing IP video telephony
WO2006058544A1 (fr) * 2004-11-30 2006-06-08 Telefonaktiebolaget Lm Ericsson (Publ) Procede de distribution de fichiers multimedia
WO2006086717A1 (fr) * 2005-02-11 2006-08-17 Vidiator Enterprises Inc. Procede pour service de transmission en continu de fichiers multiples via une liste de diffusion dans un environnement mobile et son systeme
US20070276917A1 (en) * 2006-05-25 2007-11-29 Sony Ericsson Mobile Communications Ab Buffering streaming content

Also Published As

Publication number Publication date
FI20080150A0 (fi) 2008-02-25
FI20080150L (fi) 2009-08-26

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