WO2018121014A1 - Procédé et appareil de commande de lecture vidéo et dispositif terminal - Google Patents

Procédé et appareil de commande de lecture vidéo et dispositif terminal Download PDF

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Publication number
WO2018121014A1
WO2018121014A1 PCT/CN2017/107311 CN2017107311W WO2018121014A1 WO 2018121014 A1 WO2018121014 A1 WO 2018121014A1 CN 2017107311 W CN2017107311 W CN 2017107311W WO 2018121014 A1 WO2018121014 A1 WO 2018121014A1
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WIPO (PCT)
Prior art keywords
interface
rendering
decoding
hardware
video stream
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PCT/CN2017/107311
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English (en)
Chinese (zh)
Inventor
吴昊
徐光兴
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广州虎牙信息科技有限公司
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Publication of WO2018121014A1 publication Critical patent/WO2018121014A1/fr

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    • 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
    • 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
    • H04N21/234309—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 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo

Definitions

  • the present invention relates to the field of multimedia technologies, and in particular, to a video playback control method, apparatus, and terminal device.
  • a primary object of the present invention is to provide a video playback control method and apparatus
  • Another object of the present invention is to provide a terminal device that implements the video playing method.
  • the present invention provides a video playback control method, including the following steps:
  • Determining a decoding condition provided by the terminal selecting an adapted decoding interface to decode the video stream, and when the decoding condition includes a hardware decoding interface and a software decoding interface, preferentially calling the hard The decoding interface decodes, otherwise the software decoding interface is called for decoding;
  • Determining a rendering condition provided by the terminal selecting a matching graphic rendering interface to draw the decoded video stream and outputting the output to the user interface display, and preferentially calling the hardware when the rendering condition includes a hardware rendering interface and a software rendering interface
  • the rendering interface is rendered, otherwise the software rendering interface is called for rendering.
  • the method further includes:
  • the operating system is a WINDOWS system.
  • the operating system of the terminal is a WINDOWS7 version or a WINDOWS7 or higher version, it is determined that the terminal meets the prerequisites for providing hardware decoding and hardware rendering, otherwise the software decoding interface is called to decode the video stream. Then, the software rendering interface is called to draw the decoded video stream and output it to the user interface display.
  • the step of determining the decoding condition provided by the terminal, and selecting the adapted decoding interface to decode the video stream specifically includes:
  • the decoder type including an Nvidia hardware decoder, an Intel hardware decoder, and an AMD hardware decoder;
  • the hardware decoding interface of the Nvidia hardware decoder is called to decode the video stream
  • the hardware decoding interface of the Intel hardware decoder is called to decode the video stream
  • the hardware decoding interface of the AMD hardware decoder is called to decode the video stream.
  • the hardware rendering interface is a DirectX 11 graphics rendering interface.
  • the DirectX 11 graphics rendering interface is called to convert the decoded video stream into a YUV 420 format and loaded into the DirectX 11 format. In the texture, the video stream is then drawn using the DirectX 11 device and output to the user interface.
  • the DirectX 11 graphics rendering interface is called to convert the decoded video stream into an RGBA format and loaded in the video memory, and then the video stream is drawn by the DirectX 11 device and output to the user interface.
  • determining whether the video stream is a VR view Frequency if it is, then use 3D graphics rendering, otherwise, use 2D graphics rendering.
  • the subsequent steps of the method are performed when the control instruction of the user is received.
  • the present invention provides a video playback control apparatus, including:
  • Read module used to obtain a video stream between live broadcasts from a server
  • a decoding module configured to determine a decoding condition provided by the terminal, and select an adapted decoding interface to decode the video stream.
  • the decoding condition includes a hardware decoding interface and a software decoding interface
  • the hardware decoding interface is preferentially invoked. Decoding, otherwise calling the software decoding interface for decoding;
  • the rendering module is configured to determine a rendering condition provided by the terminal, and select a matching graphic rendering interface to draw the decoded video stream and output the result to the user interface display.
  • the rendering condition includes a hardware rendering interface and a software rendering interface
  • the hardware rendering interface is preferentially invoked for rendering, otherwise the software rendering interface is invoked for rendering.
  • the present invention further provides a terminal device for implementing the method of the above first aspect, comprising: a video decoder, a video rendering engine, a central processing unit, a graphics processor, a memory, and a touch sensitive display.
  • the present invention has the following advantages:
  • the present invention can effectively standardize the encoding format of the live video stream for the video live broadcast platform.
  • the live decoding video stream is preferably decoded and rendered by hardware decoding and hardware rendering. It can ensure the smoothness of high-quality live video stream playback, especially for VR video stream, hardware decoding and hardware rendering can effectively reduce the CPU usage of the terminal, and solve the problem of video playback caused by software coding and GDI rendering. ;
  • the live broadcast platform can effectively standardize the encoding format of the live video stream, the video stream encoding format can be effectively prevented from satisfying the condition of supporting hardware decoding, and the video stream is provided with hardware decoding to provide more convenient conditions.
  • FIG. 1 is a schematic flow chart of an embodiment of a video playback control method according to the present invention.
  • FIG. 2 is a schematic flow chart of an embodiment of determining a type of a terminal decoder according to the present invention
  • FIG. 3 is a schematic diagram of an embodiment of playing a live video stream according to the present invention.
  • FIG. 4 is a schematic diagram of an embodiment of a video playback control apparatus according to the present invention.
  • terminal and terminal device used herein include both a wireless signal receiver device, a device having only a wireless signal receiver without a transmitting capability, and a receiving and transmitting hardware.
  • Such devices may include cellular or other communication devices having a single line display or a multi-line display or a cellular or other communication device without a multi-line display; PCS (Personal Communications Service), which may combine voice, data processing, facsimile and / or data communications capabilities; PDA (personal digital Assistant, personal digital assistants), which may include network access to a radio frequency receiver, a pager, Internet / web browser, notepad, calendar and / or GPS (Global Positioning System (Global Positioning System) receiver; conventional laptop and/or palmtop computer or other device having a conventional laptop and/or palmtop computer or other device that includes and/or includes a radio frequency receiver.
  • GPS Global Positioning System
  • terminal may be portable, transportable, installed in a vehicle (aviation, sea and/or land), or adapted and/or configured to operate locally, and/or Run in any other location on the Earth and/or space in a distributed form.
  • the "terminal” and “terminal device” used herein may also be a communication terminal, an internet terminal, a music/video playing terminal, and may be, for example, a PDA, a MID (Mobile Internet Device), and/or have a music/video playback.
  • Functional mobile phones can also be smart TVs, set-top boxes and other devices.
  • the remote network device used herein includes, but is not limited to, a computer, a network host, a single network server, a plurality of network server sets, or a cloud composed of multiple servers.
  • the cloud is composed of a large number of computers or network servers based on Cloud Computing, which is a kind of distributed computing, a super virtual computer composed of a group of loosely coupled computers.
  • the communication between the remote network device, the terminal device and the WNS server can be implemented by any communication method, including but not limited to, mobile communication based on 3GPP, LTE, WIMAX, TCP/IP, UDP protocol. Computer network communication and short-range wireless transmission based on Bluetooth and infrared transmission standards.
  • the implementation of the method of the present invention depends on a certain functional module or plug-in in the mobile terminal operating system, specifically executable code built in the corresponding application of the mobile terminal or a separately executable application independent of any application. It can be executed in a specific application and can run in a variety of compatible applications.
  • the specific implementation form of the functional module or the plug-in is not specifically limited to the present invention.
  • the live broadcast room includes the following meanings: 1 a virtual space (or virtual room) created based on the webcast platform.
  • the live broadcast room is generally created by the anchor client and connected to multiple viewing clients, that is, live broadcast.
  • the anchor and the plurality of viewers are included in the room, and the viewing client located in the virtual space can watch the live content of the anchor client, and the user of the anchor client and the user who views the client, the user who views the client, and the user who views the client.
  • 2 an instant messaging platform that aggregates users together in groups, such as a video conferencing system, where users log in to the client to enter the group, and the user is in the group.
  • the group exists as a member of the group.
  • the same group contains multiple group members.
  • the user can join or leave the group arbitrarily. Within the group, various interactions such as text, voice, and video can be performed.
  • FIG. 1 is a schematic flowchart of an embodiment of a video playback control method according to the present invention, including the following steps:
  • Step S100 Obtain a video stream between the live broadcasts from the server.
  • the live broadcast process is as follows: the watcher sends a video live broadcast request to watch a live broadcast -> after receiving the request, the server returns the play address (usually a multicast URL) of the live broadcast to the viewer -> the watcher The address is added to the corresponding multicast group-> and then the video stream (stream data) of the live broadcast is obtained from the server. After the terminal obtains the video stream, before converting the video stream into an image output and displaying it on the terminal user interface, the video stream needs to be decoded, rendered, and the like.
  • the encoded format of the video stream is an H.264 or H.265 encoding format
  • the live broadcast platform can effectively control the encoding format of the live video stream, thereby providing more convenient conditions for hardware decoding of the video stream.
  • Step S200 determining a decoding condition provided by the terminal, selecting an adapted decoding interface to decode the video stream, and when the decoding condition includes a hardware decoding interface and a software decoding interface, preferentially calling the hardware decoding interface to perform decoding, Otherwise, the software decoding interface is called for decoding.
  • Step S300 determining a rendering condition provided by the terminal, selecting a matching graphic rendering interface to draw the decoded video stream and outputting the output to the user interface display, and when the rendering condition includes a hardware rendering interface and a software rendering interface, preferentially calling The hardware rendering interface performs rendering, otherwise the software rendering interface is invoked for rendering.
  • the method further includes the steps of:
  • the operating system is a WINDOWS system. Since Microsoft has configured a hardware acceleration interface for the underlying system in WINDOWS7 and above of the WINDOWS system, the operating system below WINDOWS7 cannot meet the conditions of hardware decoding and hardware rendering, so in this embodiment
  • the operating system of the terminal is WINDOWS7 version or WINDOWS7 or higher, it is determined that the terminal meets the preconditions for providing hardware decoding and hardware rendering. Otherwise, the software decoding interface is called to soft decode the video stream, and then the WINDOWS GDI is called to decode. The subsequent video stream is drawn and output to the user interface display.
  • the embodiment further includes the following steps:
  • the decoder types include NVIDIA hardware decoder, INTEL hardware decoder, AMD hardware decoder, and hardware decoding technology is mainly provided by NVIDIA/INTEL/AMD.
  • Nvidia's graphics card introduces PureVideo technology and PureVideo in hardware decoding.
  • HD technology Intel's graphics card introduced Intel Clear Video technology in hardware decoding
  • AMD's graphics card introduced AMD Avivo technology and AMD Avivo HD technology in hardware decoding.
  • the graphics cards that support PureVideo technology are: GeForce6 series graphics cards, GeForce7 series graphics cards; graphics cards supporting PureVideo HD (first generation) technology: GeForce6 series graphics cards, GeForce7 series graphics cards, GeForce6150 integrated graphics; support PureVideo HD (second generation)
  • the technical graphics cards are: GeForce8 series.
  • Graphics cards that support AMD Avaio technology include the ATi X1300/X1600/X1800/X1900 series, the ATi HD2000/HD3000/HD4000 series, and the AMD HD5000/HD6000 series.
  • Graphics cards that support AMD Avaio HD technology are: ATI HD2400/HD2600 series.
  • FIG. 2 is a flowchart of determining a decoder type supported by a terminal according to the embodiment, specifically,
  • the hardware decoding interface of the Nvidia hardware decoder is called to decode the video stream
  • the hardware decoding interface of the Intel hardware decoder is called to decode the video stream
  • the hardware decoding interface of the AMD hardware decoder is called to decode the video stream.
  • Encoding formats such as H.264 or H.265 format
  • encapsulation formats provide more convenient conditions for hardware decoding of video streams.
  • the decoded video stream needs to be rendered. In this case, it is also required to determine a rendering condition provided by the terminal.
  • the rendering condition includes a hardware rendering interface and a software rendering interface
  • the first call is performed.
  • the hardware rendering interface is rendered, otherwise the software rendering interface is invoked for rendering.
  • the hardware rendering interface is a DirectX graphics rendering interface, and Microsoft Corporation integrates DirectX11 into Windows 7.
  • the DirectX 11 graphics rendering interface is called to convert the decoded video stream into a YUV 420 format and loaded into a texture created by DirectX 11 (a picture saved in the video memory).
  • the video stream is then drawn and output to the user interface display using the DirectX 11 device, which can save CPU usage to the utmost extent.
  • the DirectX 11 graphics rendering interface is called to convert the decoded video stream into an RGBA format and loaded in the video memory, and then the video stream is drawn and output by using the DirectX 11 device. Displayed to the user interface.
  • the video stream is rendered by the DirectX 11 graphics rendering interface, it is determined whether the video stream is a VR video, and if so, the 3D graphics rendering is performed; otherwise, the 2D graphics rendering is performed.
  • the DirectX 11 includes a Direct 3D and a Direct Draw interface.
  • the 3D graphics rendering is performed by calling a Direct 3D interface.
  • the 2D graphics rendering is performed by calling a Direct Draw.
  • the VR (Virtual Reality) video is also called a panoramic video.
  • VR video stream is a high-resolution, high-rate, high-frame-rate live video stream. If software decoding and GDI rendering are used, it will occupy too many terminals.
  • CPU resources, causing video picture jamming, and using hardware decoding and / or hardware rendering can effectively release the end The pressure of the CPU ensures the smoothness of high-quality video playback.
  • the function of turning on hardware decoding and/or hardware rendering includes the following manners:
  • An implementation manner is: when the terminal uses the software decoding and the GDI to render the output video stream, and after detecting that the CPU usage of the terminal is higher than a preset threshold, the video stream is hardware decoded and/or according to the method of the present invention.
  • Hardware rendering to reduce the CPU usage of the terminal, reduce the dropped frame of the video stream, improve the smoothness of video playback, and thus enhance the user experience.
  • the second implementation manner is that, after the terminal acquires the video stream, according to the decoding condition and the rendering condition provided by the terminal, if the hardware decoding and hardware rendering conditions are met, the hardware decoding and hardware rendering of the video stream are automatically turned on.
  • FIG. 3 is a schematic diagram of an embodiment of playing a live video stream according to the present invention. The user can click on the button pointed to by the arrow in FIG. 3 to enable hardware decoding and hardware rendering of the video stream.
  • FIG. 4 is a schematic diagram of an embodiment of a video playback control apparatus according to the present invention, including:
  • the reading module 100 is configured to acquire a video stream between the live broadcasts from the server.
  • the live broadcast process is as follows: the watcher sends a video live broadcast request to watch a live broadcast -> after receiving the request, the server returns the play address (usually a multicast URL) of the live broadcast to the viewer -> the watcher The address is added to the corresponding multicast group-> and then the video stream (stream data) of the live broadcast is obtained from the server.
  • the reading module 100 obtains the video stream, before converting the video stream into an image output and displaying it on the terminal user interface, the video stream needs to be decoded, rendered, and the like.
  • the decoding module 200 is configured to determine a decoding condition provided by the terminal, select an adapted decoding interface to decode the video stream, and preferentially invoke the hardware decoding interface when the decoding condition includes a hardware decoding interface and a software decoding interface. Decoding is performed, otherwise the software decoding interface is called for decoding.
  • the rendering module 300 is configured to determine a rendering condition provided by the terminal, and select a matching graphic rendering interface to draw the decoded video stream and output the output to the user interface, when the rendering condition includes a hard
  • the rendering interface and the software rendering interface are used, the hardware rendering interface is preferentially called for rendering, otherwise the software rendering interface is called for rendering.
  • the decoding module 200 calls the software decoding interface to perform soft decoding on the video stream.
  • the rendering module 300 then calls WINDOWS GDI to draw and output the decoded video stream to the user interface display.
  • the decoder type including an NVIDIA hardware decoder, an INTEL hardware decoder, and an AMD hardware decoder;
  • the decoding module 200 calls the hardware decoding interface of the Nvidia hardware decoder to decode the video stream;
  • the decoding module 200 calls the hardware decoding interface of the Intel hardware decoder to decode the video stream;
  • the decoding module 200 calls the hardware decoding interface of the AMD hardware decoder to decode the video stream.
  • the rendering module 300 After decoding the video stream, it is also required to determine a rendering condition provided by the terminal.
  • the rendering module 300 calls the DirectX 11 graphics rendering interface to convert the decoded video stream into the YUV 420 format, and Loaded into the texture created by DirectX 11 (a type of image container saved in the video memory), and then the video stream is drawn by the DirectX 11 device and output to the user interface display;
  • the rendering module 300 calls DirectX.
  • 11 graphics rendering interface converts the decoded video stream into RGBA format and loads it in the video memory, and then uses the DirectX 11 device to draw the video stream and output it to the user interface display.
  • the present invention further provides a terminal device, which is used to implement the above video playback control method, including: a video decoder, a video rendering engine, a central processing unit, a graphics processor, a memory, and a touch sensitive display.
  • a terminal device which is used to implement the above video playback control method, including: a video decoder, a video rendering engine, a central processing unit, a graphics processor, a memory, and a touch sensitive display.
  • the present invention can effectively standardize the encoding format of the live video stream for the video live broadcast platform.
  • the live decoding video stream is preferably decoded and rendered by hardware decoding and hardware rendering. It can ensure the smoothness of high-quality live video stream playback.
  • hardware decoding and hardware rendering can effectively reduce the CPU usage of the terminal, and solve the problem of video playback caused by software coding and GDI rendering. The problem;
  • the live broadcast platform can effectively standardize the encoding format of the live video stream, the video stream encoding format can be effectively prevented from satisfying the condition of supporting hardware decoding, and the video stream is provided with hardware decoding to provide more convenient conditions.

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

Abstract

La présente invention concerne le domaine technique du multimédia, et en particulier un procédé et un appareil de commande de lecture vidéo et un dispositif terminal. Le procédé comprend les étapes consistant à : acquérir un flux vidéo destiné à un studio en direct à partir d'un serveur ; déterminer une condition de décodage fournie par un terminal, et sélectionner une interface de décodage correspondante pour décoder le flux vidéo, l'interface de décodage matériel étant de préférence invoquée pour le décodage lorsque la condition de décodage comprend une interface de décodage matériel et une interface de décodage logiciel, et sinon, l'interface de décodage logiciel étant invoquée pour le décodage ; et déterminer une condition de rendu fournie par le terminal, sélectionner une interface de rendu graphique correspondante pour rendre le flux vidéo décodé, et ensuite délivrer le flux vidéo décodé rendu à une interface utilisateur de façon à l'afficher, l'interface de rendu matériel étant de préférence invoquée pour le rendu lorsque la condition de rendu comprend une interface de rendu matériel et une interface de rendu logiciel, et sinon, l'interface de rendu logiciel étant invoquée pour le rendu. Selon la présente invention, un terminal peut réaliser une visualisation fluide d'un flux vidéo en direct ayant une résolution élevée, un débit binaire élevé et un taux de trame élevé.
PCT/CN2017/107311 2016-12-30 2017-10-23 Procédé et appareil de commande de lecture vidéo et dispositif terminal WO2018121014A1 (fr)

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CN201611259122.8A CN106713937A (zh) 2016-12-30 2016-12-30 视频播放控制方法、装置及终端设备
CN201611259122.8 2016-12-30

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