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WO2017020649A1 - Procédé de commande de lecture audio/vidéo et dispositif associé - Google Patents

Procédé de commande de lecture audio/vidéo et dispositif associé Download PDF

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Publication number
WO2017020649A1
WO2017020649A1 PCT/CN2016/084426 CN2016084426W WO2017020649A1 WO 2017020649 A1 WO2017020649 A1 WO 2017020649A1 CN 2016084426 W CN2016084426 W CN 2016084426W WO 2017020649 A1 WO2017020649 A1 WO 2017020649A1
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WO
WIPO (PCT)
Prior art keywords
audio
video
encoded
video playback
mobile terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/084426
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English (en)
Chinese (zh)
Inventor
曹芝勇
刘付光旺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen TCL Digital Technology Co Ltd
Original Assignee
Shenzhen TCL Digital Technology Co Ltd
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 Shenzhen TCL Digital Technology Co Ltd filed Critical Shenzhen TCL Digital Technology Co Ltd
Publication of WO2017020649A1 publication Critical patent/WO2017020649A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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]
    • H04N21/40—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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • 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
    • H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4

Definitions

  • the present invention relates to the field of display terminal technologies, and in particular, to an audio and video playback control method and apparatus.
  • TV, computer and mobile phone are the three most popular platforms in the daily life of ordinary users. They have their own characteristics: large TV screen and good viewing experience; many computer functions and rich storage space; mobile phones are the most convenient to carry around.
  • TV TV to watch videos at home, although the viewing experience is good, the operation and content resources are far less than the richness of mobile phones and computers.
  • multi-screen interactive technology aims to integrate the advantages of the three platforms to achieve the best user experience.
  • each terminal directly acquires original audio and video data, performs decoding on the terminal, and then plays. Since decoding is required on each terminal, the terminal is required to be high, and if a terminal that does not have a decoding function is used, playback cannot be performed.
  • the main object of the present invention is to provide an audio and video playback control method and apparatus, which aims to solve the problem that the mobile terminal cannot be played due to the limitation of the decoding capability of the mobile terminal when performing multi-screen interaction.
  • the present invention provides an audio and video playback control method, and the audio and video playback control method includes the following steps:
  • the encoding the audio and video data to be encoded to form a multimedia file comprises:
  • the re-encoded audio and video data and the second audiovisual data are encapsulated to form a multimedia file.
  • the encoding the audio and video data to be encoded to form a multimedia file further includes:
  • the maximum code rate supported by the mobile terminal is set to the re-encoded code rate.
  • the method before the step of outputting the multimedia file to the mobile terminal for video playback by the mobile terminal, the method further includes:
  • step of outputting the multimedia file to the mobile terminal for video playback by the mobile terminal is performed.
  • the present invention further provides an audio and video playback control method including the following steps:
  • the filtering the audio and video data corresponding to the currently received code stream according to the audio and video playback feature data to obtain the audio and video data to be encoded includes:
  • Matching and screening the PID of the program in the currently received code stream according to the audio and video playback feature data to delete the PID and the corresponding audio and video data that do not match the audio and video playback feature data, to form an audio and video to be encoded. data.
  • the encoding the audio and video data to be encoded to form a multimedia file comprises:
  • the re-encoded audio and video data and the second audiovisual data are encapsulated to form a multimedia file.
  • the encoding the audio and video data to be encoded to form a multimedia file further includes:
  • the maximum code rate supported by the mobile terminal is set to the re-encoded code rate.
  • the method before the step of outputting the multimedia file to the mobile terminal for video playback by the mobile terminal, the method further includes:
  • step of outputting the multimedia file to the mobile terminal for video playback by the mobile terminal is performed.
  • the present invention further provides an audio and video playback control apparatus including:
  • An acquiring module configured to acquire audio and video playing feature data preset in the audio and video playing request when receiving an audio and video playing request sent by the mobile terminal;
  • a screening module configured to filter audio and video data corresponding to the currently received code stream according to the audio and video playback feature data to obtain audio and video data to be encoded
  • An encoding module configured to encode the audio and video data to be encoded to form a multimedia file
  • a transmission module configured to output the multimedia file to the mobile terminal, for the mobile terminal to perform audio and video playback.
  • the screening module is configured to perform matching screening on the PID of the program in the currently received code stream according to the audio and video playback feature data, to delete the PID that does not match the audio and video playback feature data, and corresponding Audio and video data, forming audio and video data to be encoded.
  • the encoding module comprises:
  • a determining unit configured to determine, according to the audio and video playing feature data and the preset feature information in the currently received code stream, the first audio and video data to be re-encoded in the audio and video data to be encoded and the second audio that does not need to be re-encoded Video data;
  • a coding unit configured to re-encode the first audio and video data according to an encoding algorithm corresponding to the audio and video playback feature data
  • a packaging unit configured to package the re-encoded audio and video data and the second audio and video data into a multimedia file.
  • the encoding module further includes:
  • a second determining unit configured to determine whether the current network speed is smaller than a maximum code rate supported by the mobile terminal
  • a setting unit configured to set a re-encoded code rate according to the current network speed when the current network speed is less than a maximum code rate supported by the mobile terminal; the current network speed is greater than or equal to that supported by the mobile terminal At the maximum bit rate, the maximum code rate supported by the mobile terminal is set to the re-encoded code rate.
  • the audio and video playback control device further includes:
  • a determining module configured to determine whether the size of the multimedia file is greater than a preset value; when the size of the multimedia file is greater than a preset value, triggering the transmitting module to output the multimedia file to the mobile terminal, where the mobile terminal performs video Play.
  • the embodiment of the present invention acquires the audio and video play feature data preset in the audio and video play request; and according to the audio and video play feature data, the currently received code stream Corresponding audio and video data is filtered to obtain audio and video data to be encoded; the audio and video data to be encoded is encoded to form a multimedia file; and then the multimedia file is output to the mobile terminal for audio and video of the mobile terminal. Play. Since the audio and video data is re-encoded according to the encoding algorithm corresponding to the audio and video playback feature data of the mobile terminal during the audio and video playback, when the multi-screen interaction is performed, the mobile terminal cannot be played due to the limitation of the decoding capability of the mobile terminal.
  • FIG. 1 is a schematic flow chart of a first embodiment of an audio and video playback control method according to the present invention
  • FIG. 2 is a schematic diagram of a refinement process for encoding audio and video data in a third embodiment of an audio and video playback control method according to the present invention
  • FIG. 3 is a diagram showing an example of comparing audio and video playback feature data with preset feature information in an embodiment of an audio and video playback control method according to the present invention
  • FIG. 4 is a schematic diagram showing a refinement process of encoding audio and video data in a fourth embodiment of an audio and video playback control method according to the present invention
  • FIG. 5 is a schematic flowchart diagram of a fifth embodiment of an audio and video playback control method according to the present invention.
  • FIG. 6 is a schematic structural diagram of a function module of a first embodiment of an audio and video playback control apparatus according to the present invention.
  • FIG. 7 is a schematic structural diagram of a refinement function module of an encoding module in a third embodiment of the audio and video playback control apparatus of the present invention.
  • FIG. 8 is a schematic structural diagram of a refinement function module of an encoding module in a fourth embodiment of the audio and video playback control apparatus according to the present invention.
  • FIG. 9 is a schematic structural diagram of a function module of a fifth embodiment of an audio and video playback control apparatus according to the present invention.
  • the present invention provides an audio and video playback control method.
  • the audio and video playback control method includes the following steps:
  • Step S10 when receiving an audio and video playback request sent by the mobile terminal, acquiring audio and video playback feature data preset in the audio and video playback request;
  • the audio and video playback control method provided by the embodiment of the invention is mainly applied to a multi-screen interactive transmission system.
  • the multi-screen interactive system includes a main display terminal and a plurality of sub-display terminals, wherein the sub-display terminal performs audio and video playback according to the audio and video data displayed by the main display terminal.
  • the main display terminal is a television set
  • the sub display terminal is a mobile terminal as an example.
  • the mobile terminal communicates with the television (for example, a Bluetooth connection or a network connection), and can communicate with each other.
  • a multi-device viewing application is provided in the mobile terminal.
  • the audio and video playback request includes audio and video playback feature data
  • the audio and video playback feature data includes a mobile terminal supported playback.
  • the mobile terminal sends the audio and video playback request to the television set in a networked state, and the television receives the audio and video playback request to parse the audio and video playback feature data in the audio and video playback request.
  • the manner in which the mobile terminal sends the play request may be set according to actual needs, and the network connection is taken as an example for detailed description. Specifically, the mobile terminal first determines whether to establish a network connection, and after establishing a network connection, determines whether there is a television that can be accessed; when there is a television that can be in a position, the mobile terminal sends a handshake request to the television to Establish a communication connection between the TV and the mobile terminal. After the television establishes a communication connection with the mobile terminal, the mobile terminal can send the above audio and video playback request to the television through the network.
  • Step S20 Filter audio and video data corresponding to the currently received code stream according to the audio and video playback feature data to obtain audio and video data to be encoded;
  • Step S30 encoding the audio and video data to be encoded to form a multimedia file
  • a standard encoding algorithm of a package format commonly used by mobile terminals is stored in a television set.
  • the code stream is acquired in real time, and the audio and video data in the code stream is decoded and played, and the audio and video data is filtered according to the above-mentioned audio and video playback feature data, thereby obtaining matching with the mobile terminal.
  • Audio and video data to be encoded.
  • the audio and video data is encoded and converted according to the above standard encoding algorithm, and encapsulated into a multimedia file of the audio and video format corresponding to the audio and video playback feature data, and finally the multimedia file is stored in a cache of the television.
  • Step S40 Output the multimedia file to the mobile terminal, for the mobile terminal to perform audio and video playback.
  • the multimedia file When a multimedia file exists in the cache of the television set, the multimedia file will be transmitted to the mobile terminal through the network in the form of a data packet. After receiving the multimedia file, the mobile terminal saves the multimedia file in the memory, and when the cache reaches a certain level, reminds the user whether it needs to play; when the user inputs the operation instruction of the play, the player is called to load the multimedia file, thereby realizing the audio and video playback. .
  • the embodiment of the present invention acquires the audio and video play feature data preset in the audio and video play request; and according to the audio and video play feature data, the currently received code stream Corresponding audio and video data is filtered to obtain audio and video data to be encoded; the audio and video data to be encoded is encoded to form a multimedia file; and then the multimedia file is output to the mobile terminal for audio and video of the mobile terminal. Play. Since the audio and video data is re-encoded according to the encoding algorithm corresponding to the audio and video playback feature data of the mobile terminal during the audio and video playback, when the multi-screen interaction is performed, the mobile terminal cannot be played due to the limitation of the decoding capability of the mobile terminal.
  • step S20 includes:
  • Matching and screening the PID of the program in the currently received code stream according to the audio and video playback feature data to delete the PID and the corresponding audio and video data that do not match the audio and video playback feature data, to form an audio and video to be encoded. data.
  • the television set receives the code stream in real time, and transmits the data filter through the decoder (Demod), and finally identifies the data of the program in the filtered code stream through the PID.
  • the television can search for the extra track and the PID of the program from the PMT table of the program according to the audio and video playing feature data, and then mark all the PIDs obtained by the search into a sequence array, and finally pass the hardware filter.
  • the legal PID generates a filtered TS stream. Specifically, in the TS stream, since the audio and video data corresponding to the above-mentioned redundant tracks and letters are deleted, the amount of data transmission is reduced.
  • step S30 includes:
  • Step S31 determining, according to the audio and video playback feature data and the preset feature information in the currently received code stream, the first audio and video data to be re-encoded in the audio and video data to be encoded and the second audio and video data that are not required to be re-encoded. ;
  • Step S32 re-encoding the first audio and video data according to an encoding algorithm corresponding to the audio and video playback feature data
  • Step S33 the re-encoded audio and video data and the second audio and video data are encapsulated to form a multimedia file.
  • the preset feature information of the above code stream and the audio and video playback feature data are compared to determine the difference between the two: including the package format, the video format, and the resolution.
  • the parameter that needs to be encoded and converted is a video format
  • the audio and video data is re-encoded
  • the video format needs to be modified to H.263.
  • the encapsulation format needs to be modified to 3GPP to meet the format requirements supported by the mobile terminal.
  • the coding since the audio and video playback feature data is compared with the preset feature information in the currently received code stream, and only the content corresponding to the parameter that needs to be re-encoded is encoded, the coding may be reduced. time needed.
  • step S30 may further include:
  • the TS stream is decoded to obtain audio and video data to be encoded, where the audio and video data includes: basic pixel data formed by decoding the video. And decoding the audio into a basic bit stream. And determining whether the resolution of the currently received code stream is smaller than the display resolution of the mobile terminal, and when the resolution of the currently received code stream is greater than the display resolution of the mobile terminal, The basic pixel data in the video data is subjected to resolution conversion, and then the encoding operation is performed again; when the resolution of the currently received code stream is less than or equal to the display resolution of the mobile terminal, the re-encoding operation is directly performed. As shown in FIG. 3, the resolution of the code stream is 1920*1080, and the display resolution of the mobile terminal is 1280*720. At this time, the resolution of the basic pixel data needs to be converted and converted to 1280*720.
  • the resolution conversion mode can be set according to actual needs. Specifically, the resolution of the above code stream is 1920*1080, and the display resolution of the mobile terminal is 1280*720 as an example.
  • the step S30 further includes:
  • Step S34 determining whether the current network speed is less than the maximum code rate supported by the mobile terminal; if yes, executing step S35, otherwise performing step S36;
  • Step S35 setting a re-encoded code rate according to the current network speed
  • Step S36 setting a maximum code rate supported by the mobile terminal to a re-encoded code rate.
  • the network speed of the current network may be tested in real time according to the network test tool, and then the current network speed is compared with the maximum code rate supported by the mobile terminal.
  • the code rate of the re-encoding is determined according to the current network speed, thereby effectively preventing the code rate from being too large, resulting in unsmooth transmission, thereby affecting playback on the mobile terminal. Effect.
  • step S40 further includes:
  • step S50 it is determined whether the size of the multimedia file is greater than a preset value; if yes, step S40 is performed; otherwise, it is determined whether the size of the multimedia file is greater than a preset value.
  • the multimedia file is temporarily stored in the memory of the television.
  • the multimedia file stored in the memory will continue to increase, and when the minimum transmission unit is reached (ie, the preset value, Need to be greater than the code rate *n, n is a specified duration, for example, 1, that is, playing a video size of 1 second, and the multimedia file is transmitted to the mobile terminal through the network for the mobile terminal to perform audio and video playback.
  • the present invention also provides an audio and video playback control apparatus.
  • the audio and video playback control apparatus includes:
  • the acquiring module 10 is configured to acquire the audio and video playing feature data preset in the audio and video playing request when receiving the audio and video playing request sent by the mobile terminal;
  • the audio and video playback control device provided by the embodiment of the invention is mainly applied to a multi-screen interactive transmission system.
  • the multi-screen interactive system includes a main display terminal and a plurality of sub-display terminals, wherein the sub-display terminal performs audio and video playback according to the audio and video data displayed by the main display terminal.
  • the main display terminal is a television set
  • the sub display terminal is a mobile terminal as an example.
  • the mobile terminal communicates with the television (for example, a Bluetooth connection or a network connection), and can communicate with each other.
  • a multi-device viewing application is provided in the mobile terminal.
  • the audio and video playback request includes audio and video playback feature data
  • the audio and video playback feature data includes a mobile terminal supported playback.
  • the mobile terminal sends the audio and video playback request to the television set in a networked state, and the television receives the audio and video playback request to parse the audio and video playback feature data in the audio and video playback request.
  • the manner in which the mobile terminal sends the play request may be set according to actual needs, and the network connection is taken as an example for detailed description. Specifically, the mobile terminal first determines whether to establish a network connection, and after establishing a network connection, determines whether there is a television that can be accessed; when there is a television that can be in a position, the mobile terminal sends a handshake request to the television to Establish a communication connection between the TV and the mobile terminal. After the television establishes a communication connection with the mobile terminal, the mobile terminal can send the above audio and video playback request to the television through the network.
  • the screening module 20 is configured to filter audio and video data corresponding to the currently received code stream according to the audio and video playback feature data to obtain audio and video data to be encoded.
  • the encoding module 30 is configured to encode the audio and video data to be encoded to form a multimedia file
  • a standard encoding algorithm of a package format commonly used by mobile terminals is stored in a television set.
  • the code stream is acquired in real time, and the audio and video data in the code stream is decoded and played, and the audio and video data is filtered according to the above-mentioned audio and video playback feature data, thereby obtaining matching with the mobile terminal.
  • Audio and video data to be encoded.
  • the audio and video data is encoded and converted according to the above standard encoding algorithm, and encapsulated into a multimedia file of the audio and video format corresponding to the audio and video playback feature data, and finally the multimedia file is stored in a cache of the television.
  • the transmission module 40 is configured to output the multimedia file to the mobile terminal for audio and video playback by the mobile terminal.
  • the multimedia file When a multimedia file exists in the cache of the television set, the multimedia file will be transmitted to the mobile terminal through the network in the form of a data packet. After receiving the multimedia file, the mobile terminal saves the multimedia file in the memory, and when the cache reaches a certain level, reminds the user whether it needs to play; when the user inputs the operation instruction of the play, the player is called to load the multimedia file, thereby realizing the audio and video playback. .
  • the embodiment of the present invention acquires the audio and video play feature data preset in the audio and video play request; and according to the audio and video play feature data, the currently received code stream Corresponding audio and video data is filtered to obtain audio and video data to be encoded; the audio and video data to be encoded is encoded to form a multimedia file; and then the multimedia file is output to the mobile terminal for audio and video of the mobile terminal. Play. Since the audio and video data is re-encoded according to the encoding algorithm corresponding to the audio and video playback feature data of the mobile terminal during the audio and video playback, when the multi-screen interaction is performed, the mobile terminal cannot be played due to the limitation of the decoding capability of the mobile terminal.
  • the screening module 20 is specifically configured to receive the current received according to the audio and video playback feature data.
  • the PID of the program in the code stream is matched and filtered to delete the PID and the corresponding audio and video data that do not match the audio and video playback feature data, and form the audio and video data to be encoded.
  • the television set receives the code stream in real time, and transmits the data filter through the decoder (Demod), and finally identifies the data of the program in the filtered code stream through the PID.
  • the television can search for the extra track and the PID of the program from the PMT table of the program according to the audio and video playing feature data, and then mark all the PIDs obtained by the search into a sequence array, and finally pass the hardware filter.
  • the legal PID generates a filtered TS stream. Specifically, in the TS stream, since the audio and video data corresponding to the above-mentioned redundant tracks and letters are deleted, the amount of data transmission is reduced.
  • the TS stream is then decoded to obtain audio and video data to be encoded, the audio and video data comprising: decoding basic video data formed by decoding the video and decoding the audio into a basic bit stream.
  • the encoding module 30 includes
  • a determining unit 31 configured to determine, according to the audio and video playing feature data and the preset feature information in the currently received code stream, the first audio and video data to be re-encoded in the audio and video data to be encoded and the second audio data that does not need to be re-encoded Audio and video data;
  • the encoding unit 32 is configured to perform re-encoding processing on the first audio and video data according to an encoding algorithm corresponding to the audio and video playback feature data;
  • the encapsulating unit 33 is configured to package the re-encoded audio and video data and the second audio and video data into a multimedia file.
  • the preset feature information of the above code stream and the audio and video playback feature data are compared to determine the difference between the two: including the package format, the video format, and the resolution.
  • the parameter that needs to be encoded and converted is a video format
  • the audio and video data is re-encoded
  • the video format needs to be modified to H.263.
  • the encapsulation format needs to be modified to 3GPP to meet the format requirements supported by the mobile terminal.
  • the coding since the audio and video playback feature data is compared with the preset feature information in the currently received code stream, and only the content corresponding to the parameter that needs to be re-encoded is encoded, the coding may be reduced. time needed. It can be understood that if the audio and video data to be encoded is subjected to resolution conversion in the second embodiment, the encoding is based on the resolution-converted audio and video data to be encoded.
  • the foregoing encoding module 30 may further include:
  • a first determining unit configured to determine whether a resolution of the currently received code stream is smaller than a display resolution of the mobile terminal
  • a processing unit configured to perform resolution conversion on the audio and video data to be encoded when a resolution of the currently received code stream is greater than a display resolution of the mobile terminal.
  • the TS stream is decoded to obtain audio and video data to be encoded, where the audio and video data includes: basic pixel data formed by decoding the video. And decoding the audio into a basic bit stream. And determining whether the resolution of the currently received code stream is smaller than the display resolution of the mobile terminal, and when the resolution of the currently received code stream is greater than the display resolution of the mobile terminal, The basic pixel data in the video data is subjected to resolution conversion, and then the encoding operation is performed again; when the resolution of the currently received code stream is less than or equal to the display resolution of the mobile terminal, the re-encoding operation is directly performed. As shown in FIG. 3, the resolution of the code stream is 1920*1080, and the display resolution of the mobile terminal is 1280*720. At this time, the resolution of the basic pixel data needs to be converted and converted to 1280*720.
  • the resolution conversion mode can be set according to actual needs. Specifically, the resolution of the above code stream is 1920*1080, and the display resolution of the mobile terminal is 1280*720 as an example.
  • the encoding module 20 further includes:
  • the second determining unit 24 is configured to determine whether the current network speed is smaller than a maximum code rate supported by the mobile terminal;
  • the setting unit 25 is configured to: when the current network speed is less than the maximum code rate supported by the mobile terminal, set a re-encoded code rate according to the current network speed; the current network speed is greater than or equal to that supported by the mobile terminal. At the maximum code rate, the maximum code rate supported by the mobile terminal is set to the re-encoded code rate.
  • the network speed of the current network may be tested in real time according to the network test tool, and then the current network speed is compared with the maximum code rate supported by the mobile terminal.
  • the code rate of the re-encoding is determined according to the current network speed, thereby effectively preventing the code rate from being too large, resulting in unsmooth transmission, thereby affecting playback on the mobile terminal. Effect.
  • the audio-video playback control apparatus further includes:
  • the determining module 50 is configured to determine whether the size of the multimedia file is greater than a preset value; when the size of the multimedia file is greater than a preset value, triggering the transmitting module 40 to output the multimedia file to the mobile terminal for the mobile terminal Play video.

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

Abstract

L'invention concerne un procédé de commande de lecture audio/vidéo. Le procédé de commande de lecture audio/vidéo comporte les étapes consistant: à réception d'une demande de lecture audio/vidéo émise par un terminal mobile, à obtenir les données de caractéristiques prédéfinies pour la lecture audio/vidéo à partir de la demande de lecture audio/vidéo; obtenir les données audio/vidéo à coder par criblage les données audio/vidéo correspondant au flux binaire actuellement reçu en fonction des données de caractéristiques de lecture audio/vidéo; coder les données audio/vidéo à coder pour former des fichiers multimédia; délivrer les fichiers multimédia au terminal mobile en vue de la lecture audio/vidéo par le terminal mobile. L'invention concerne en outre un dispositif de commande de lecture audio/vidéo. La présente invention résout le problème de l'impossibilité pour un terminal mobile d'effectuer une lecture pendant une interaction multi-écrans en raison de la limitation de la capacité de décodage du terminal mobile.
PCT/CN2016/084426 2015-07-31 2016-06-02 Procédé de commande de lecture audio/vidéo et dispositif associé Ceased WO2017020649A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510466859.6A CN105142009B (zh) 2015-07-31 2015-07-31 音视频播放控制方法及装置
CN201510466859.6 2015-07-31

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