CN112367542A - Terminal playing system and method for mirror image screen projection - Google Patents
Terminal playing system and method for mirror image screen projection Download PDFInfo
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- CN112367542A CN112367542A CN202011133953.7A CN202011133953A CN112367542A CN 112367542 A CN112367542 A CN 112367542A CN 202011133953 A CN202011133953 A CN 202011133953A CN 112367542 A CN112367542 A CN 112367542A
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/40—Scenes; Scene-specific elements in video content
-
- 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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
-
- 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
- H04N21/439—Processing of audio elementary streams
- H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
-
- 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, rendering scenes according to MPEG-4 scene graphs
- H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 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, rendering scenes according to MPEG-4 scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
Abstract
The invention discloses a terminal playing system for mirror image screen projection, which comprises a scene detection module, a screen projection module and a screen display module, wherein the scene detection module is used for analyzing audio and video media data of source end equipment and determining the type of a screen projection scene; the playing mode configuration management module is used for configuring and managing the playing mode according to the screen projecting scene type; the player module is used for analyzing the media data and setting internal parameters of the terminal equipment according to a play mode; and analyzing and processing the audio and video media data of the source end equipment, configuring an application scene and analyzing the media data through the terminal playing system, and then playing the media data by the terminal equipment to realize mirror image screen projection. In addition, a terminal playing method of mirror image screen projection is further disclosed, the playing scene type corresponding to the screen projection data is detected, the corresponding playing mode is configured according to the playing scene type, parameter setting is carried out, screen projection under various scenes is completed, the using effect of mirror image screen projection is improved, and user experience is improved.
Description
Technical Field
The invention relates to the technical field of mirror image screen projection, in particular to a terminal playing system and method for mirror image screen projection.
Background
The multi-screen cooperative technology is widely used in large-screen application occasions, the mirror image projection technology belongs to one of the multi-screen cooperative technologies, and synchronous display and output of picture images between two screens are achieved through the mirror image projection technology. The mirror image screen projection scene is composed of source end equipment (source) and terminal equipment (sink), the source end equipment and the terminal equipment establish network connection through a screen projection protocol, wherein the source end equipment is responsible for capturing, coding and fluidizing a self screen image in real time and sending a fluidized video image picture to the terminal equipment in real time through a network mode; the terminal equipment receives the video stream of the source end equipment, and starts the multimedia player to decode, play and display the video pictures and output the video pictures to the screen, thereby realizing the consistency of the screen image pictures between the two equipment.
In an actual use scenario, in order to ensure image synchronization of both screen projection parties, the terminal playing system may take various measures to reduce delay consumption, so as to reduce the delay difference with the source terminal picture. When the time delay is too large, the player actively loses frames for processing, or reduces the picture time delay by adopting a double-speed playing mode. The implementation of the measures effectively reduces the time delay of the source end device and the terminal device. In addition, the method has great limitation in use scenes, for example, when the screen is projected in a video playing scene, problems of unsynchronized sound and picture, frame skipping, unsmooth playing and the like can occur, which all result in poor use experience of the mirror image screen projection in some scenes!
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a terminal playing system and a terminal playing method for mirror image screen projection, which overcome the application scene application singleness and limitation of the existing mirror image screen projection technology, and improve the screen projection user experience of the mirror image screen projection technology in various scenes.
In order to achieve the purpose, the invention adopts the technical scheme that: a terminal playing system for mirror image screen projection comprises a scene detection module, a playing mode configuration management module and a player module; the scene detection module is used for analyzing audio and video media data of the source end equipment and determining the type of a screen projection scene; the playing mode configuration management module is used for configuring and managing the playing mode according to the screen projecting scene type; the player module is used for analyzing the media data and setting internal parameters of the terminal equipment according to a play mode; and analyzing and processing the audio and video media data of the source end equipment, configuring an application scene and analyzing the media data through the terminal playing system, and then playing the media data by the terminal equipment to realize mirror image screen projection.
Further, the terminal device is a desktop terminal or a mobile terminal.
Meanwhile, the technical scheme of the invention also comprises a terminal playing method of mirror image projection, which comprises the following steps:
step one, a source end device and a terminal device establish a mirror image screen projection channel through a protocol, and start mirror image screen projection;
extracting screen projection video data and audio data of source end equipment, identifying through an artificial intelligence technology, and judging the screen projection scene type of the data;
setting a playing mode, and extracting a corresponding playing mode according to the type of the screen projection scene;
setting and playing parameters, setting corresponding parameter values according to a playing mode, and playing in the mode;
and step five, stopping screen projection after screen projection is finished or the user selects to quit screen projection.
Further, the screen projection scene types comprise a video viewing scene, a PPT demonstration scene, a video conference scene and a game appreciation scene.
Further, the play modes include a smooth play mode and a time-lapse play mode.
Furthermore, the playing modes correspond to parameters one to one, and the parameters at least include a picture delay tolerance value, a playing buffer duration, a fluency priority value and a delay priority value.
Further, when the fluency is the priority of the playing mode, the picture delay tolerance value and the playing buffer area length of the player module are increased;
when the playing mode is time delay priority, the picture time delay tolerance value of the player module is the minimum value, the time length of the playing buffer area is 0, and when the actual time delay exceeds the picture time delay tolerance value, active frame dropping or frame skipping processing is adopted.
Further, the fifth step further includes repeating the processing flow from the second step to the fourth step when the screen projection is continued or the screen projection scene is changed.
Further, the terminal playing method is transmitted in a wired or wireless mode.
The invention has the beneficial effects that:
the terminal playing system for mirror image screen projection detects the corresponding playing scene type by collecting and analyzing the video data and the audio data of the mirror image screen projection, configures the corresponding playing mode according to the playing scene type, and sets parameters, thereby carrying out mirror image screen projection according to the using scene. The scene switching of the mirror image projection screen is carried out according to the projection screen data, the playing effect of the mirror image projection screen is guaranteed, and the user experience is improved.
Drawings
Fig. 1 is a schematic view of a terminal playing system for image projection according to an embodiment of the present invention.
Fig. 2 is a flowchart of a terminal playing method for mirror image projection in an embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the relevant art to practice the invention. The embodiments described below are intended to be examples only, and other obvious modifications will occur to those skilled in the relevant art and are within the scope of the invention.
The solution according to the invention is further described below with reference to the accompanying figures 1-2 and examples.
As shown in fig. 1, the present invention provides a terminal playing system for mirror image projection, which includes a scene detection module, a playing mode configuration management module, and a player module.
And the scene detection module analyzes and processes the screen projection image and the sound in real time by adopting an artificial intelligence technology, detects the type of the screen projection scene and finally outputs the type of the screen projection scene to the play mode configuration management module. And the play mode configuration management module is used for receiving the detection result of the scene detection module, configuring and managing the play mode of the player according to the screen projection scene type and ensuring that the player runs in a correct play mode. The player module analyzes media data, decodes, displays and outputs, and sets specific player internal parameters, and plays and outputs audio and video streaming media according to a play mode.
The playing system of the mirror image screen projection terminal is respectively connected with the source end equipment and the terminal equipment through a network, the source end equipment and the terminal equipment are in mirror image screen projection connection through a protocol, audio and video media data of the source end equipment are analyzed and processed, application scenes are configured, the media data are analyzed through the mirror image screen projection terminal playing system, then, the terminal equipment plays the audio and video media data, and mirror image screen projection is achieved.
The source end device can be a mobile phone, a PC (personal computer), a tablet, a notebook and the like. The terminal device is a player device with a screen, supports a mirror image screen projection protocol, is provided with player software and functions, and can be a desktop terminal or a mobile terminal, such as a tablet computer, a notebook computer or an intelligent television.
The terminal playing system for mirror image screen projection can realize the compatibility of the mirror image screen projection to various use scenes, and improve the screen projection user experience in each scene. As shown in fig. 2, which is a flow chart of a terminal playing method of mirror image screen projection according to the present invention, the following description will be given by taking a smart phone mirror image screen projection to a smart tv and taking a video watching scene as an example:
step one, starting a mirror image screen projection, establishing a mirror image screen projection channel by the smart phone and the smart television based on a Miracast protocol, and successfully starting the mirror image screen projection;
and step two, detecting and identifying the screen projection scene in real time, synchronously starting the screen projection scene detection and identification function after the mirror image screen projection connection is successful, extracting video data and audio data from the mirror image screen projection in real time, and identifying the current screen projection scene in real time through an artificial intelligence technology. Recognizing that the current screen projection is in a video viewing scene through a scene detection module, and outputting a scene result to a play mode configuration management module;
the type of the scene is defined by a scene detection user, and the mainstream using scene comprises the following steps: video viewing scenes, PPT demonstration scenes, video conference scenes, game appreciation scenes and the like.
And step three, setting a play mode, wherein the play mode configuration management module receives the screen projection scene type input in the step two, namely the video viewing scene, and extracts the play mode corresponding to the video viewing scene as a smooth play mode. Wherein, each screen projection use scene corresponds to a play mode.
Step four, parameter setting and playing, wherein the player module detects the change of the playing mode, reads the playing mode to be the smooth playing mode in real time, and the player extracts the corresponding parameter group value of the smooth film watching mode: setting a picture delay tolerance value as 1 second, setting the duration of a play buffer area as 500 milliseconds, setting a fluency priority value as 1 and setting a delay priority value as 1; the player module sets these values and continues playing in this mode.
For a playing mode with a priority fluency, the frame delay tolerance value of the player module is increased, the duration of a buffer area of the player is also increased, the fluency of the audio and video frames is ensured, and frame dropping or frame skipping processing is avoided in the playing process; for a playing mode with priority on time delay, the picture time delay tolerance value of the player is set according to the minimum value, the time length of a buffer area of the player is reduced as much as possible and even configured to be 0, and when the time delay exceeds the picture time delay tolerance value, the player adopts an active frame loss or frame skipping strategy to process; so as to ensure the screen projection effect through the configuration of the play mode.
And step five, quitting the judgment, if the user selects to quit the screen projection, quitting the playing process, and stopping the screen projection. And if the screen projection is continued or the screen projection use scene is changed, repeating the processing flow from the second step to the fourth step until the screen projection is withdrawn, and finishing the mirror image screen projection playing processing flow.
In this embodiment, the playing method of the mirror image screen projection terminal may be transmitted in a wired manner, for example, through an HDMI cable; the transmission may also be performed wirelessly, for example, wirelessly according to a wireless screen delivery protocol such as DLNA, AirPlay, Miracast, etc.
By the mirror image screen projection terminal playing system and method, video data and audio data of a mirror image screen are collected and analyzed, a corresponding playing scene type is detected, a corresponding playing mode is configured according to the playing scene type, parameters are set, and therefore mirror image screen projection is carried out according to a using scene. The mirror image screen projection terminal playing system is enabled to set parameters according to corresponding scenes, synchronization of sound and pictures of the mirror image screen projection is guaranteed, phenomena of frame skipping, unsmooth playing and the like are avoided, the using effect of the mirror image screen projection is improved, and user experience is improved.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A terminal playing system for mirror image screen projection is characterized by comprising a scene detection module, a playing mode configuration management module and a player module; the scene detection module is used for analyzing audio and video media data of the source end equipment and determining the type of a screen projection scene; the playing mode configuration management module is used for configuring and managing the playing mode according to the screen projecting scene type; the player module is used for analyzing the media data and setting internal parameters of the terminal equipment according to a play mode; and analyzing and processing the audio and video media data of the source end equipment, configuring an application scene and analyzing the media data through the terminal playing system, and then playing the media data by the terminal equipment to realize mirror image screen projection.
2. The terminal playing system according to claim 1, wherein the terminal device is a desktop terminal or a mobile terminal.
3. A terminal playing method for mirror image screen projection is characterized by comprising the following steps:
step one, a source end device and a terminal device establish a mirror image screen projection channel through a protocol, and start mirror image screen projection;
extracting screen projection video data and audio data of source end equipment, identifying through an artificial intelligence technology, and judging the screen projection scene type of the data;
setting a playing mode, and extracting a corresponding playing mode according to the type of the screen projection scene;
setting and playing parameters, setting corresponding parameter values according to a playing mode, and playing in the mode;
and step five, stopping screen projection after screen projection is finished or the user selects to quit screen projection.
4. The terminal playing method according to claim 3, wherein the screen-casting scene types include a video viewing scene, a PPT presentation scene, a video conference scene, and a game appreciation scene.
5. The terminal playing method according to claim 3, wherein the playing modes include a smooth playing mode and a delayed playing mode.
6. The terminal playing method according to claim 3, wherein the playing modes correspond to parameters one-to-one, and the parameters at least include a picture delay tolerance value, a playing buffer duration, a fluency priority value, and a delay priority value.
7. The terminal playback method according to claim 6,
when the playing mode is fluency priority, the picture delay tolerance value and the playing buffer area length of the player module are increased;
when the playing mode is time delay priority, the picture time delay tolerance value of the player module is the minimum value, the time length of the playing buffer area is 0, and when the actual time delay exceeds the picture time delay tolerance value, active frame dropping or frame skipping processing is adopted.
8. The terminal playing method according to claim 3, wherein the fifth step further comprises repeating the processing flow from the second step to the fourth step when the screen is continuously projected or the screen projection scene is changed.
9. The terminal playing method according to any one of claims 3 to 8, wherein the terminal playing method is transmitted by a wired or wireless method.
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| CN202011133953.7A CN112367542A (en) | 2020-10-21 | 2020-10-21 | Terminal playing system and method for mirror image screen projection |
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Cited By (3)
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| CN115515001A (en) * | 2021-06-22 | 2022-12-23 | 荣耀终端有限公司 | Screen mirroring method, device, equipment and storage medium |
| CN116033209A (en) * | 2022-08-29 | 2023-04-28 | 荣耀终端有限公司 | Screen projection method and electronic equipment |
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Application publication date: 20210212 |