CN108600834B - Video transmission system, receiving/sending/transmitting method and device - Google Patents

Video transmission system, receiving/sending/transmitting method and device Download PDF

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Publication number
CN108600834B
CN108600834B CN201810330268.XA CN201810330268A CN108600834B CN 108600834 B CN108600834 B CN 108600834B CN 201810330268 A CN201810330268 A CN 201810330268A CN 108600834 B CN108600834 B CN 108600834B
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video
video receiver
receiver
feedback information
information
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CN108600834A (en
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王素云
张弦
侯刚
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Shenzhen Qixin haoshitong cloud computing Co., Ltd
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Shenzhen Inpor Cloud Computing Co ltd
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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
    • H04N21/43—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
    • H04N21/440263—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 altering the spatial resolution, e.g. for displaying on a connected PDA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H04N7/155—Conference systems involving storage of or access to video conference sessions

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

Abstract

The invention is suitable for the technical field of communication, and provides a video transmission system, a receiving/sending/transmitting method and a device, wherein the video receiving method comprises the following steps: acquiring display window information of each video receiver in real time, wherein the display window information comprises: the DPI parameters of the number of points per inch of a video receiver and the size of a display window of the receiver; when the display window information changes, calculating feedback information of each video receiver according to the display window information of each video receiver; sending the feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting the video data output by the video sender; the video sender in the method can adjust the resolution of the video sent by the video sender according to the video display environment information of the receiver, so that the transmission bandwidth can be saved while the playing quality is not influenced.

Description

Video transmission system, receiving/sending/transmitting method and device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a video transmission system, a receiving/transmitting method, and an apparatus.
Background
In a common internet video conference, a video sender and a video receiver are generally included, wherein a plurality of video receivers are generally provided, and the video sender generally sets a resolution to encode a video in advance and sends the video to each receiver. However, when the resolution of the display window of each video receiver display device is different, if the video sender directly sends the preset encoded video to each receiver according to the preset encoded video, the preset encoded video may not meet the display requirement of each receiver, on one hand, when the resolution of the display window of the receiver display device is far smaller than the resolution of the video sent by the sender, the waste of transmission bandwidth may be caused, and then the situations of network congestion and video unsmooth occur; on the other hand, when the resolution of the display window of the display device on the receiving side is much higher than the resolution of the video transmitted by the transmitting side, the playing quality of the video may be impaired.
Disclosure of Invention
In view of this, embodiments of the present invention provide a video transmission system, a receiving/sending/transmitting method and an apparatus, so as to solve the problems of transmission bandwidth waste and video playing quality influence caused by directly sending a coded video by a video sender in the prior art.
A first aspect of an embodiment of the present invention provides a video receiving method, including:
acquiring display window information of each video receiver in real time, wherein the display window information comprises: the DPI parameters of the number of points per inch of a video receiver and the size of a display window of the receiver;
when the display window information changes, calculating feedback information of each video receiver according to the display window information of each video receiver;
sending the feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting video data output by a video sender;
and receiving the video data output by the video sender or the server and playing the video data in a display window of the video receiver.
Optionally, the calculating feedback information of each video receiver according to the display window information of each video receiver specifically includes:
judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter;
when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; and when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver.
A second aspect of an embodiment of the present invention provides a video receiving apparatus, including:
the window information acquisition module is used for acquiring display window information of each video receiver in real time, wherein the display window information comprises: the DPI parameters of the number of points per inch of a video receiver and the size of a display window of the receiver;
the feedback information calculation module is used for calculating the feedback information of each video receiver according to the display window information of each video receiver when the display window information changes;
the feedback information sending module is used for sending the feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting video data output by a video sender;
the video receiving module is used for receiving video data output by the video sender or the server;
and the playing module is used for playing the video data in a display window.
Optionally, the feedback information calculating module includes: a judgment unit and a feedback information calculation unit;
the judging unit is used for judging the size relationship between the DPI parameter of the receiver and a preset DPI parameter;
the feedback information calculation unit is used for calculating the feedback information of the video receiver equal to the size of a display window of the video receiver when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter; and when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver.
A third aspect of an embodiment of the present invention provides a video sending method, including: receiving feedback information sent by each video receiver, and acquiring window resolution information according to the feedback information; or directly receiving window resolution information sent by the server;
adjusting video data output by a video sender according to the window resolution information;
and outputting the video data to a video receiver or a server.
Optionally, the obtaining of the window resolution information according to the feedback information specifically includes:
and calculating the maximum value or the average value of the feedback information of each video receiver, and matching the maximum value or the average value as window resolution information.
A fourth aspect of an embodiment of the present invention provides a video transmission apparatus, including:
the information receiving module is used for receiving feedback information sent by each video receiver and acquiring window resolution information according to the feedback information; or directly receiving window resolution information sent by the server;
the adjusting module is used for adjusting the video data output by the video sender according to the window resolution information;
and the output module is used for outputting the video data to a video receiver or a server.
Optionally, the information receiving module includes: a receiving unit and a window resolution calculating unit;
the receiving unit is used for receiving feedback information sent by each video receiver; or, the window resolution information is used for receiving the window resolution information sent by the server;
and the window resolution calculating unit is used for calculating the maximum value or the average value of the feedback information of each video receiver and matching the maximum value or the average value as the window resolution information.
A fifth aspect of an embodiment of the present invention provides a video transmission method, including:
receiving feedback information sent by each video receiver, and acquiring window resolution information according to the feedback information;
sending the window resolution information to a video sender;
and receiving the video data output by the video sender and sending the video data to the video receiver.
A sixth aspect of an embodiment of the present invention provides a video transmission apparatus, including:
the resolution acquisition module is used for receiving feedback information sent by each video receiver and acquiring window resolution information according to the feedback information;
the resolution sending module is used for sending the window resolution information to a video sender;
and the transfer module is used for receiving the video data output by the video sender and sending the video data to the video receiver.
A seventh aspect of the embodiments of the present invention provides a video transmission system, including: a video receiving device and a video transmitting device;
the video receiving device is used for acquiring display window information of each video receiver in real time, calculating feedback information of each video receiver, sending the feedback information of each video receiver to a video sender, receiving video data output by the video sender and playing the video data in a display window of the video receiver;
the video sending device is used for receiving feedback information sent by each video receiver, acquiring window resolution information according to the feedback information, adjusting video data output by the video sender according to the window resolution information, and outputting the video data to the video receivers.
An eighth aspect of the embodiments of the present invention provides another video transmission system, including: video receiving apparatus, video transmitting apparatus and video transmitting apparatus:
the video receiving device is used for acquiring display window information of each video receiver in real time, calculating feedback information of each video receiver, sending the feedback information of each video receiver to the server, receiving video data output by the server and playing the video data in the display window of the video receiver;
the video transmission device is used for receiving feedback information sent by each video receiver, acquiring window resolution information according to the feedback information, sending the window resolution information to the video receiver, receiving video data output by the video sender and sending the video data to the video receiver;
the video sending device is used for receiving the window resolution information sent by the server, adjusting the video data output by the video sending party according to the window resolution information, and outputting the video data to the server.
A ninth aspect of the embodiments of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of any one of the video receiving method, the video transmitting method, and the video transmitting method.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the embodiment of the invention calculates the feedback information of each video receiver according to the information of the display window of the receiver by acquiring the display window information of each video receiver in real time, and then sends the feedback information to the video sender or the server, wherein the feedback information is used for adjusting the video data output by the video sender and then receiving and playing the video data adjusted by the video sender, thereby obtaining the proper video resolution according to the video display environment of the receiver and further adjusting the video data sent by the video sender, saving the transmission bandwidth without influencing the playing quality, considering the influence of the DPI information of the video display equipment end on the video display equipment and further reducing the bandwidth consumption compared with the traditional video sending and receiving process, and the fluency of watching the video is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart illustrating an implementation of a video receiving method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a video receiving apparatus according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an implementation of a video transmission method according to an embodiment of the present invention;
fig. 4 is an exemplary diagram of a structure of a video transmission apparatus provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of an implementation flow of a video transmission method provided by an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a video transmission apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a video transmission system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another video transmission system provided in the embodiment of the present invention;
fig. 9 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example one
Referring to fig. 1, a schematic diagram of an implementation flow of a video receiving method according to a first embodiment of the present invention is shown, where this embodiment may be applied to a video receiving side, and is described in detail as follows:
step S101, obtaining display window information of each video receiver in real time, wherein the display window information comprises: the DPI parameter of the number of points per inch of the video receiver and the size of a display window of the receiver.
In this embodiment, the display window information of the receiver needs to be acquired first, and the video sender can adjust the size of the sent video according to the display window information. Specifically, the obtaining of the display window information of each video receiver may include: the video receiver receives the video stream sent by the video sender first, and the video receiver performs decoding operation on the received video stream to acquire display window information.
The display window information comprises a DPI parameter of a video receiver, wherein the DPI parameter refers to pixels per inch, the lower the parameter of the DPI is, the lower the definition of the video display is, and conversely, the higher the parameter of the DPI is, the higher the definition of the video display is. The DPI parameter refers to the DPI of the video recipient display in this embodiment. In addition, the display window information further includes the size of the display window of the receiving party, and the size of the display window may be: the width of the display window or the height of the display window or the product of the height of the display window and the width of the display window, i.e. the area of the display window. The feedback information of the receiver is obtained according to the DPI parameter of the receiver and the size of the display window of the receiver, the DPI parameter is considered in the calculation of the feedback information of the receiver, the feedback information of the video receiver can be fully obtained according to the video display environment, and the bandwidth occupied by the sender can be reduced.
And step S102, when the display window information changes, calculating the feedback information of each video receiver according to the display window information of each video receiver.
In the embodiment, the video sender is enabled to adjust the output video according to the feedback information by calculating the feedback information of each video receiver. Before calculating the feedback information of each video receiver, judging whether the display window information of the video receiver changes or not, and calculating the feedback information of the video receiver after the display window information of the video receiver changes; when the display window information of the video receiver is not changed, the feedback information of the video receiver does not need to be recalculated. The condition that the display window information of the video receiver changes comprises the following steps: the DPI parameter of the video receiver changes, the width of the display window changes, and the height of the display window changes.
Optionally, the calculating feedback information of each video receiver according to the display window information of each video receiver specifically includes:
and step S1021, judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter.
In this embodiment, a DPI parameter needs to be preset, where the preset DPI parameter is a DPI that the human eye can accept at the maximum, specifically, the DPI that the human eye can accept at the maximum refers to a DPI that is required for a video recipient to see a video without generating a granular sensation. Presetting the DPI that the human eye can accept to the maximum is based on the fact that: when the DPI parameter of the video receiver is greater than the preset DPI parameter, the video data of the video sender is obtained according to the DPI parameter of the video receiver, and compared with the case that the video data of the video sender is obtained according to the preset DPI parameter, more image pixels need to be displayed in the same display area, that is, when the DPI parameter of the video receiver greater than the preset DPI parameter is adopted to obtain the video data of the video sender, the video data with a higher resolution needs to be obtained.
However, for human vision, when the resolution of the viewed video data is greater than the resolution of the video data corresponding to the DPI parameter that is maximally acceptable to human eyes, the video experience of human eyes is not greatly improved. For example: when the display device a is a DPI at a retina level, and the resolution of a display window for displaying the a video is close to the resolution of the video to be received, then the a video can actually transmit a smaller resolution video, because the improvement of the visual experience brought by a higher DPI is small when the human eye is watching the video, but the bandwidth waste is caused, and even the phenomenon of stuttering occurs.
Step S1022, when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; and when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver.
In this embodiment, after the size relationship between the DPI parameter of the video receiver and the preset DPI parameter is determined, the feedback information of the video receiver is obtained according to the relationship. Specifically, when the DPI parameter of the video receiver is smaller than the preset DPI parameter, the feedback information of the video receiver is equal to the size of the display window of the video receiver; however, when the DPI parameter of the video receiver is greater than the preset DPI parameter, the size of the receiver display window needs to be corrected downward. Specifically, the method for modifying the size of the receiver display window downward may be: the method comprises the steps of firstly calculating the product of a preset DPI parameter and the height of a display window or the width of the display window to obtain a product value, carrying out quotient on the product value and the DPI parameter of a video receiver to obtain a quotient value, then carrying out rounding operation on the quotient value to obtain the height of the display window after rounding operation or the width of the display window after rounding operation, and taking the product (namely the area of the display window) of the height of the display window after rounding operation or the width of the display window after rounding operation and the width of the display window after rounding operation as feedback information of the video receiver.
It should be understood that, when the DPI parameter of the video receiver is greater than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of the display window of the video receiver, and the method for calculating the feedback information of the video receiver is not limited to the above method, and any method for obtaining the feedback information of the video receiver according to the DPI parameter of the receiver, the preset DPI parameter, and the size of the display window of the receiver should fall within the scope of the present invention.
For example: in a video conference scene, a video sender A, a video receiver B and a video receiver C are included, the DPI parameter of the video receiver B is 320, the width of a display window is 1280, and the height of the display window is 720; the DPI parameter of the video receiver C is 120, the width of a display window is 640, and the height of the display window is 480; if the preset DPI parameter in the system is 160, the preset parameter can meet the basic requirement of the user for watching the video, and since the DPI parameter of the video receiver B is greater than the preset DPI parameter, the feedback information of the video receiver B can be calculated in the following manner: the width of the feedback window is 640, the height of the feedback window is 360, and the area of the feedback window is 640; correspondingly, since the DPI parameter of the video receiver C is smaller than the preset DPI parameter, the feedback information of the video receiver C may be calculated in the following manner: the width of the feedback window is 640, the height of the feedback window is 480, and the area of the feedback window is 640, 480.
Step S103, sending the feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting the video data output by the video sender.
In this embodiment, after the feedback information of each video receiver is acquired, the feedback information is sent to a server or a video sender. The feedback information may be the width of a feedback window of the video receiver, the height of the feedback window of the video receiver, or the area of the feedback window of the video receiver. The receiver of the feedback information may be a server, and when the receiver of the feedback information is the server, the server calculates the received feedback information and sends the feedback information to the video sender, so as to adjust the size of the output video of the video sender. For example, the receiver of the feedback information may be a conference server cluster, the conference server cluster is configured to receive the feedback information of the video receiver, process the feedback information and send the processed feedback information to the video sender, the video sender receives the information sent by the conference server cluster and adjusts an output video according to the information, and the output video is sent to the video receiver through the conference server cluster.
In addition, the receiver of the feedback information may also be a video sender, and the video sender directly receives the feedback information from the video receiver, processes each received feedback information, and directly calculates the size of the video to be output according to the processed information. And finally, the video sender sends the adjusted video to the video receiver.
And step S104, receiving the video data output by the video sender or the server and playing the video data in a display window of the video receiver.
In this embodiment, the video receiver receives video data from the video sender or the server, and plays the video data in the display window. The source of the video data may be a video sender or a server, wherein when the source of the video data is the server, the transmission process of the video data is as follows: the system comprises a video sender, a server and a video receiver; when the source of the video data is a video sender, the transmission process of the video data is as follows: a video sender and a video receiver. In addition, the video data is obtained after adjustment according to the feedback information of the video receivers, the feedback information of each video receiver is sent to the video sender or the server, so that the video sender can obtain the display window information of all the video receivers, and according to the display window information of each video receiver, a proper video resolution can be obtained, so that the video sender can adjust the size of the output video according to the video resolution, and the video data sent by the video sender cannot have the condition that the resolution is too high, the bandwidth is wasted, or the video resolution is too low, and the video is fuzzy.
In the embodiment, the display window information of each video receiver is obtained in real time, the display window information comprises DPI parameters and the size of a display window of the receiver, the feedback information of each video receiver is calculated according to the information of the display window of the receiver, and then the feedback information is sent to the video sender or the server, wherein the feedback information is used for adjusting the video data output by the video sender and then receiving and playing the video data adjusted by the video sender, so that the proper video resolution can be obtained according to the video display environment of the receiver, and further the video data sent by the video sender is adjusted, the transmission bandwidth can be saved without influencing the playing quality, compared with the traditional video sending and receiving process, the influence of the DPI information of the video display equipment end on the video display equipment is considered, and the bandwidth consumption can be further reduced, and the fluency of watching the video is guaranteed.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Example two
Corresponding to the video receiving method described in the above embodiments, fig. 2 shows a schematic diagram of a video receiving apparatus provided in an embodiment of the present invention, and this embodiment may be applied to a video receiving side. For convenience of explanation, only the portions related to the present embodiment are shown.
Referring to fig. 2, the apparatus may include: the system comprises a window information acquisition module 101, a feedback information calculation module 102, a feedback information sending module 103, a video receiving module 104 and a playing module 105.
A window information obtaining module 101, configured to obtain display window information of each video receiver in real time, where the display window information includes: the DPI parameter of the number of points per inch of the video receiver and the size of a display window of the receiver.
And the feedback information calculation module 102 is configured to calculate feedback information of each video receiver according to the display window information of each video receiver when the display window information changes.
A feedback information sending module 103, configured to send feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting the video data output by the video sender.
And the video receiving module 104 is configured to receive video data output by the video sender or the server.
And the playing module 105 is configured to play the video data in a display window.
Optionally, the feedback information calculating module 102 includes: a determination unit 1021, and a feedback information calculation unit 1022.
The determining unit 1021 is configured to determine a size relationship between the receiver DPI parameter and a preset DPI parameter.
The feedback information calculating unit 1022 is configured to, when the DPI parameter of the video receiver is less than or equal to the preset DPI parameter, determine that the feedback information of the video receiver is equal to the size of the display window of the video receiver; and when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver.
The video receiving apparatus in this embodiment may be configured to execute the video receiving method shown in fig. 1, and specific implementation principles of the video receiving apparatus may refer to the video receiving method embodiment described above, which is not described herein again.
In the second embodiment, a window information acquisition module is arranged to acquire display window information of each video receiver, wherein the display window information includes DPI parameters and the size of a display window of the receiver; through setting a feedback information calculation module, calculating feedback information of each video receiver according to the information of the receiver display window; the feedback information is sent to a video sender or a server by setting a feedback information sending module, wherein the feedback information is used for adjusting video data output by the video sender; through setting up video receiving module and broadcast module, receive and broadcast the video data after the video sender adjustment, thereby can obtain suitable video resolution according to the video display environment of receiver, and then adjust the video data that the video sender sent, can practice thrift the transmission bandwidth when not influencing the broadcast quality, compare traditional video transmission and the process of receiving, the influence of the DPI information of having considered video display equipment end to video display equipment, can further reduce bandwidth consumption, the smoothness degree when the guarantee watches the video.
EXAMPLE III
Referring to fig. 3, a schematic diagram of an implementation flow of a video sending method according to a third embodiment of the present invention is shown, where this embodiment may be applied to a video sender, and details are as follows:
step S201, receiving feedback information sent by each video receiver, and acquiring window resolution information according to the feedback information; or directly receiving window resolution information sent by the server.
In this embodiment, the video sender needs to receive feedback information from the video receivers or window resolution information from the server, and when the video sender receives feedback information from the video receivers, the feedback information is feedback window information of each video receiver, and window resolution information needs to be calculated according to the feedback window information, where the window resolution information is a basis for the video sender to adjust output video. It is easy to understand that the video receivers can also directly receive the window resolution information from the server, wherein the video resolution information sent by the server is obtained according to the feedback information of each video receiver.
Optionally, the obtaining of the window resolution information according to the feedback information specifically includes:
and calculating the maximum value or the average value of the feedback information of each video receiver, and matching the maximum value or the average value as window resolution information.
In this embodiment, when the video sender receives feedback information sent by each video receiver, it needs to obtain window resolution information according to the feedback information, where the window resolution information may be calculated by: and calculating the maximum value or the average value of the feedback information of each video receiver, wherein the feedback information can be the width of a feedback window of the video receiver, the height of the feedback window of the video receiver, or the area of the feedback window of the video receiver.
For example, in a video conference scenario, the video receiver includes a video receiver B and a video receiver C, the area of the feedback window of the video receiver B is 640 × 360, the area of the feedback window of the video receiver C is 640 × 480, and when the window resolution information is the maximum value of the feedback information of each video receiver, the window resolution information is equal to 640 × 480. When the window resolution information is an average value of feedback information of each video receiver, a plurality of feedback information can be directly sorted, and then medium-sized feedback information is selected, for example: in a video conference scene, when a video receiver includes a video receiver B, a video receiver C and a video receiver D, the area of a feedback window of the video receiver B is 640 × 360, the area of a feedback window of the video receiver C is 640 × 480, and the area of a feedback window of the video receiver D is 640 × 240, then the areas of the feedback windows of the video receivers are sorted first: 640 x 240, 640 x 360, 640 x 480, and then select the medium-sized feedback information, i.e., 640 x 360. It is easy to understand that the feedback window information of each video receiver may also be the width of the feedback window of the video receiver, or may also be the height of the feedback window of the video receiver, which is not limited in this respect.
In this embodiment, the calculation mode of the window resolution may be selected to be the maximum value of the feedback information or the average value of the feedback information according to the requirement of the receivers for watching the video, specifically, when all the receivers need to obtain clear video data, the maximum value of the feedback information of each video receiver needs to be calculated, and the maximum value of the feedback information of each video receiver is matched to be the window resolution information; when the video bandwidth needs to be saved, the average value of the feedback information of each video receiver needs to be calculated, and the average value of the feedback information of each video receiver is matched with the window resolution information. When the average value of the feedback information of the video receiver is taken as the window resolution information, the video output by the video sender can meet the watching requirements of most video receivers.
And step S202, adjusting the video data output by the video sender according to the window resolution information.
In this embodiment, after the window resolution information is obtained, the size of the video data output by the video sender is adjusted according to the window resolution information. Specifically, the output video adjusting method may be: when the window resolution information is larger than the size of the current video sent by the video sender, increasing the video data output by the current video sender; on the contrary, when the window resolution information is smaller than the size of the current video transmitted by the video transmitter, the video data output by the current video transmitter is reduced. It should be noted that the ratio of the height of the video to the width of the video in the video data output by the video sender should remain unchanged.
And step S203, outputting the video data to a video receiver or a server.
In this embodiment, after the video sender adjusts the video data, the video sender needs to output the adjusted video data, and output the video data to the video receiver or the server. Here, when the output side of the video data is the server, the transmission process of the output video data is: the system comprises a video sender, a server and a video receiver. The server here may be: and the server cluster is used for forwarding the output video of the video sender to each video receiver. It is easy to understand that the output side of the video data can also be the video receiving side directly, and when the output side of the video data is the video receiving side, the transmission process of the output video data is as follows: a video sender and a video receiver.
In the embodiment, by receiving feedback information sent by each video receiver, window resolution information is obtained according to the feedback information; or directly receiving window resolution information sent by the server; adjusting video data output by a video sender according to the window resolution information; the video data is output to a video receiver or a server, so that the video data sent by a video sender can be adjusted according to the video display environment of the receiver, the transmission bandwidth can be saved while the playing quality is not influenced, compared with the traditional video sending and receiving process, the influence of DPI information of a video display device end on the video display device is considered, the bandwidth consumption can be further reduced, and the fluency in video watching is guaranteed.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Example four
Fig. 4 is a schematic diagram of a video sending apparatus according to an embodiment of the present invention, which corresponds to the video sending method described in the foregoing embodiment. For convenience of explanation, only the portions related to the present embodiment are shown.
Referring to fig. 4, the apparatus may include: an information receiving module 201, an adjusting module 202 and an output module 203.
The information receiving module 201 is configured to receive feedback information sent by each video receiver, and obtain window resolution information according to the feedback information; or directly receiving window resolution information sent by the server.
And the adjusting module 202 is configured to adjust video data output by a video sender according to the window resolution information.
And the output module 203 is used for outputting the video data to a video receiver or a server.
Optionally, the information receiving module 201 includes: a receiving unit 2011 and a window resolution calculation unit 2012.
The receiving unit 2011 is configured to receive feedback information sent by each video receiver; or receiving window resolution information sent by the server.
The window resolution calculating unit 2012 is configured to calculate a maximum value or an average value of the feedback information of each video receiving side, and match the maximum value or the average value as the window resolution information.
The video sending apparatus in this embodiment may be configured to execute the video sending method shown in fig. 3, and specific implementation principles of the video sending apparatus may refer to the above video sending method embodiment, which is not described herein again.
In the embodiment, feedback information sent by each video receiver is received through a setting information receiving module, and window resolution information is obtained according to the feedback information; or directly receiving window resolution information sent by the server; adjusting video data output by a video sender through an adjusting module according to the window resolution information; the video data are output to the video receiver or the server through the output module, so that the proper video resolution can be obtained according to the video display environment of the receiver, the video data sent by the video sender can be adjusted, the transmission bandwidth can be saved while the playing quality is not influenced, compared with the traditional video sending and receiving process, the influence of DPI information of the video display equipment end on the video display equipment is considered, the bandwidth consumption can be further reduced, and the fluency in video watching is guaranteed.
EXAMPLE five
Referring to fig. 5, a schematic flow chart of an implementation of the video transmission method according to the fifth embodiment of the present invention is shown, which is detailed as follows:
step S301, receiving feedback information sent by each video receiver, and acquiring window resolution information according to the feedback information.
In this embodiment, the video receiver sends the feedback information to the server, and the server obtains the window resolution information suitable for the video sender according to the feedback information and sends the window resolution information to the video sender. The method for obtaining the window resolution information according to the feedback information is the same as the method for obtaining the window resolution information according to the feedback information in the fourth embodiment, and the specific method may be: and calculating the maximum value or the average value of the feedback information of each video receiver, wherein the window resolution information is calculated to be the maximum value or the average value of the feedback information according to the watching requirements of the users of the video receivers.
Step S302, the window resolution information is sent to a video sender.
In this embodiment, after the server acquires the window resolution information, the window resolution information is sent to the video sender. The server has the following functions in the video transmission method: receiving feedback information of the video receivers, calculating window resolution information suitable for the video sender according to the feedback information, receiving video data sent by the video sender, and forwarding the video data to each video receiver.
Step S303, receiving the video data output by the video sender and sending the video data to the video receiver.
In this embodiment, after receiving the window resolution information sent by the server, the video sender needs to adjust the video data output by the video sender according to the window resolution information, when the video output by the video sender is smaller than the size of the window resolution, the video data output by the video sender needs to be increased, and when the video output by the video sender is larger than the size of the window resolution, the video data output by the video sender needs to be decreased. And after the video sender finishes adjusting the output data, sending the adjusted output data to the server, and forwarding the received video data to each video receiver by the server. The server here may be a server cluster, and is configured to send the received video data to each video receiver.
In this embodiment, the server receives feedback information sent by each video receiver, obtains window resolution information according to the feedback information, sends the window resolution information to the video sender, receives video data output by the video sender and sends the video data to the video receiver, so that the server can obtain a proper video resolution according to a video display environment of the receiver, sends the video resolution to the video sender, and further adjusts the video data sent by the video sender, and can save transmission bandwidth without affecting the playing quality.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
EXAMPLE six
Fig. 6 is a schematic diagram of a video transmission apparatus according to an embodiment of the present invention, which corresponds to the video transmission method described in the foregoing embodiment. For convenience of explanation, only the portions related to the present embodiment are shown.
Referring to fig. 6, the apparatus may include: a resolution acquisition module 301, a resolution sending module 302 and a resolution transfer module 303.
A resolution obtaining module 301, configured to receive feedback information sent by each video receiver, and obtain window resolution information according to the feedback information.
A resolution sending module 302, configured to send the window resolution information to a video sender.
A forwarding module 303, configured to receive the video data output by the video sender and send the video data to the video receiver.
The video transmission apparatus in this embodiment may be configured to execute the video transmission method shown in fig. 5, and specific implementation principles thereof may refer to the video transmission method embodiment described above, which is not described herein again.
In the embodiment, the resolution acquisition module is arranged to receive the feedback information sent by each video receiver, window resolution information is obtained according to the feedback information, the window resolution information is sent to a video sender by setting a resolution sending module, the resolution transfer module is arranged to receive the video data output by the video sender and send the video data to the video receiver, so that the server can obtain a suitable video resolution according to the video display environment of the receiver and transmit the video resolution to the video sender, and then adjust the video data that the video sender sent, can practice thrift transmission bandwidth when not influencing the broadcast quality, compare the process of traditional video transmission and receipt, considered the influence of the DPI information of video display equipment end to video display equipment, bandwidth consumption can further be reduced, the smoothness degree when guaranteeing to watch the video.
EXAMPLE seven
Referring to fig. 7, a schematic structural diagram of a video transmission system provided in an embodiment of the present invention is shown, where the system includes: a video receiving device 70 and a video transmitting device 71.
The video receiving device 70 is configured to obtain display window information of each video receiver in real time, calculate feedback information of each video receiver, send the feedback information of each video receiver to a video sender, receive video data output by the video sender, and play the video data in a display window of the video receiver.
The video sending device 71 is configured to receive feedback information sent by each video receiving party, obtain window resolution information according to the feedback information, adjust video data output by the video sending party according to the window resolution information, and output the video data to the video receiving party.
The video receiving apparatus in this embodiment may be configured to execute the video receiving method shown in fig. 1, and the specific implementation principle of the video receiving apparatus may refer to the above-mentioned video transmission method embodiment; the video sending apparatus may be configured to execute the video sending method shown in fig. 3, and the specific implementation principle of the video sending apparatus may refer to the above-mentioned embodiment of the video sending method, which is not described herein again.
In the embodiment, the video receiving device is arranged to acquire the display window information of each video receiver in real time and calculate the feedback information of each video receiver, send the feedback information of each video receiver to the video sender, receive the video data output by the video sender and play the video data in the display window of the video receiver, the video sending device is arranged to receive the feedback information sent by each video receiver, acquire the window resolution information according to the feedback information, adjust the video data output by the video sender according to the window resolution information, and output the video data to the video receiver, so that the video data sent by the video sender is adjusted to obtain the proper video resolution according to the video display environment of the receiver, thereby saving the transmission bandwidth without affecting the playing quality, compared with the traditional video sending and receiving process, the influence of the DPI information of the video display equipment end on the video display equipment is considered, the bandwidth consumption can be further reduced, and the fluency in video watching is guaranteed.
Example eight
Referring to fig. 8, a schematic structural diagram of another video transmission system according to an eighth embodiment of the present invention is shown, where the system includes: a video receiving device 80, a video transmitting device 81 and a video transmitting device 82.
The video receiving device 80 is configured to obtain display window information of each video receiving party in real time, calculate feedback information of each video receiving party, send the feedback information of each video receiving party to a server, receive video data output by the server, and play the video data in the display window of the video receiving party.
The video transmission device 81 is configured to receive feedback information sent by each video receiver, obtain window resolution information according to the feedback information, send the window resolution information to the video receiver, receive video data output by the video sender, and send the video data to the video receiver.
The video sending device 82 is configured to receive the window resolution information sent by the server, adjust video data output by the video sender according to the window resolution information, and output the video data to the server.
The video receiving apparatus in this embodiment may be configured to execute the video receiving method shown in fig. 1, and the specific implementation principle of the video receiving apparatus may refer to the above-mentioned video transmission method embodiment; the video sending apparatus may be configured to execute the video sending method shown in fig. 3, and the specific implementation principle of the video sending apparatus may refer to the above-mentioned video sending method embodiment; the video receiving apparatus may be configured to execute the video transmission method shown in fig. 5, and the specific implementation principle of the video receiving apparatus may refer to the above-mentioned embodiment of the video transmission method, which is not described herein again.
In the embodiment, the video receiving device is arranged to obtain display window information of each video receiver in real time and calculate feedback information of each video receiver, send the feedback information of each video receiver to the video sender, receive video data output by the video sender and play the video data in the display window of the video receiver, the video transmission device is arranged to receive the feedback information sent by each video receiver, obtain window resolution information according to the feedback information, send the window resolution information to the video receiver, receive video data output by the video sender and send the video data to the video receiver, the video transmission device is arranged to receive the feedback information sent by each video receiver, obtain window resolution information according to the feedback information, adjust the video data output by the video sender according to the window resolution information, the video data are output to a video receiver, so that the proper video resolution is obtained according to the video display environment of the receiver, the video data sent by a video sender are adjusted, the transmission bandwidth can be saved while the playing quality is not influenced, compared with the traditional video sending and receiving process, the influence of DPI information of a video display device end on the video display device is considered, the bandwidth consumption can be further reduced, and the smoothness of watching the video is guaranteed.
Example nine
Fig. 9 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 9, the terminal device 9 of this embodiment includes: a processor 90, a memory 91 and a computer program 92, e.g. a program, stored in said memory 91 and executable on said processor 90. The processor 90, when executing the computer program 92, implements the steps in the various method embodiments described above, such as steps S101 to S104 shown in fig. 1. Alternatively, the processor 90, when executing the computer program 92, implements the functions of the modules/units in the above-described device embodiments, such as the functions of the modules 101 to 105 shown in fig. 2.
Illustratively, the computer program 92 may be partitioned into one or more modules/units that are stored in the memory 91 and executed by the processor 90 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 92 in the terminal device 9. For example, the computer program 92 may be divided into a window information obtaining module, a feedback information calculating module, a feedback information sending module, a video receiving module and a playing module, and the specific functions of each module are as follows:
the window information acquisition module is used for acquiring display window information of each video receiver in real time, wherein the display window information comprises: the DPI parameters of the number of points per inch of a video receiver and the size of a display window of the receiver;
the feedback information calculation module is used for calculating the feedback information of each video receiver according to the display window information of each video receiver when the display window information changes;
the feedback information sending module is used for sending the feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting video data output by a video sender;
the video receiving module is used for receiving video data output by the video sender or the server;
and the playing module is used for playing the video data in a display window.
The terminal device 9 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 90, a memory 91. Those skilled in the art will appreciate that fig. 9 is only an example of a terminal device 9, and does not constitute a limitation to the terminal device 9, and may include more or less components than those shown, or combine some components, or different components, for example, the terminal device may further include an input-output device, a network access device, a bus, a display, and the like.
The Processor 90 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 91 may be an internal storage unit of the terminal device 9, such as a hard disk or a memory of the terminal device 9. The memory 91 may also be an external storage device of the terminal device 9, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 9. Further, the memory 91 may also include both an internal storage unit and an external storage device of the terminal device 9. The memory 91 is used for storing the computer program and other programs and data required by the terminal device. The memory 91 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (11)

1. A video receiving method, comprising:
acquiring display window information of each video receiver in real time, wherein the display window information comprises: the DPI parameters of the number of points per inch of a video receiver and the size of a display window of the receiver;
when the display window information changes, calculating feedback information of each video receiver according to the display window information of each video receiver;
sending the feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting video data output by a video sender;
receiving video data output by the video sender or the server and playing the video data in a display window of the video receiver;
the calculating the feedback information of each video receiver according to the display window information of each video receiver specifically includes:
judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video;
when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; and when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver.
2. A video receiving apparatus, comprising:
the window information acquisition module is used for acquiring display window information of each video receiver in real time, wherein the display window information comprises: the DPI parameters of the number of points per inch of a video receiver and the size of a display window of the receiver;
the feedback information calculation module is used for calculating the feedback information of each video receiver according to the display window information of each video receiver when the display window information changes;
the feedback information sending module is used for sending the feedback information of each video receiver to a video sender or a server; the feedback information is used for adjusting video data output by a video sender;
the video receiving module is used for receiving video data output by the video sender or the server;
the playing module is used for playing the video data in a display window;
the feedback information calculation module includes: a judgment unit and a feedback information calculation unit;
the judging unit is used for judging the size relationship between the DPI parameter of the receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video;
the feedback information calculation unit is used for calculating the feedback information of the video receiver equal to the size of a display window of the video receiver when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter; and when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver.
3. A video transmission method, comprising:
receiving feedback information sent by each video receiver, and acquiring window resolution information according to the feedback information; or directly receiving window resolution information sent by the server; wherein the feedback information is calculated by each video receiver according to the following process: judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video; when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver;
adjusting video data output by a video sender according to the window resolution information;
outputting the video data to a video receiver or a server;
the obtaining of the window resolution information according to the feedback information specifically includes:
and calculating the maximum value or the average value of the feedback information of each video receiver, and matching the maximum value or the average value as window resolution information.
4. A video transmission apparatus, comprising:
the information receiving module is used for receiving feedback information sent by each video receiver and acquiring window resolution information according to the feedback information; or directly receiving window resolution information sent by the server; wherein the feedback information is calculated by each video receiver according to the following process: judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video; when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver;
the adjusting module is used for adjusting the video data output by the video sender according to the window resolution information;
the output module is used for outputting the video data to a video receiver or a server;
the information receiving module includes: a receiving unit and a window resolution calculating unit;
the receiving unit is used for receiving feedback information sent by each video receiver; or, the window resolution information is used for receiving the window resolution information sent by the server;
and the window resolution calculating unit is used for calculating the maximum value or the average value of the feedback information of each video receiver and matching the maximum value or the average value as the window resolution information.
5. A video transmission method, comprising:
receiving feedback information sent by each video receiver, and acquiring window resolution information according to the feedback information; wherein the feedback information is calculated by each video receiver according to the following process: judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video; when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver; the obtaining of the window resolution information according to the feedback information specifically includes: calculating the maximum value or the average value of the feedback information of each video receiver, and matching the maximum value or the average value as window resolution information;
sending the window resolution information to a video sender;
and receiving the video data output by the video sender and sending the video data to the video receiver.
6. A video transmission apparatus, comprising:
the resolution acquisition module is used for receiving feedback information sent by each video receiver and acquiring window resolution information according to the feedback information; wherein the feedback information is calculated by each video receiver according to the following process: judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video; when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver; the obtaining of the window resolution information according to the feedback information specifically includes: calculating the maximum value or the average value of the feedback information of each video receiver, and matching the maximum value or the average value as window resolution information;
the resolution sending module is used for sending the window resolution information to a video sender;
and the transfer module is used for receiving the video data output by the video sender and sending the video data to the video receiver.
7. A video transmission system, comprising: a video receiving device and a video transmitting device;
the video receiving device is used for acquiring display window information of each video receiver in real time, calculating feedback information of each video receiver, sending the feedback information of each video receiver to a video sender, receiving video data output by the video sender and playing the video data in a display window of the video receiver; wherein the feedback information is calculated by each video receiver according to the following process: judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video; when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver;
the video sending device is used for receiving feedback information sent by each video receiver, acquiring window resolution information according to the feedback information, adjusting video data output by the video sender according to the window resolution information, and outputting the video data to the video receivers; the obtaining of the window resolution information according to the feedback information specifically includes: and calculating the maximum value or the average value of the feedback information of each video receiver, and matching the maximum value or the average value as window resolution information.
8. A video transmission system, comprising: the video receiving device, the video transmitting device and the video transmitting device;
the video receiving device is used for acquiring display window information of each video receiver in real time, calculating feedback information of each video receiver, sending the feedback information of each video receiver to the server, receiving video data output by the server and playing the video data in the display window of the video receiver; wherein the feedback information is calculated by each video receiver according to the following process: judging the size relation between the DPI parameter of the video receiver and a preset DPI parameter; the preset DPI parameter is required by the video receiver, and granular sensation does not appear when the video receiver looks at the video; when the DPI parameter of the video receiver is smaller than or equal to the preset DPI parameter, the feedback information of the video receiver is equal to the size of a display window of the video receiver; when the DPI parameter of the video receiver is larger than the preset DPI parameter, the feedback information of the video receiver is smaller than the size of a display window of the video receiver;
the video transmission device is applied to a server and used for receiving feedback information sent by each video receiver, acquiring window resolution information according to the feedback information, sending the window resolution information to the video receivers, receiving video data output by the video sender and sending the video data to the video receivers; the obtaining of the window resolution information according to the feedback information specifically includes: calculating the maximum value or the average value of the feedback information of each video receiver, and matching the maximum value or the average value as window resolution information;
the video sending device is used for receiving the window resolution information sent by the server, adjusting the video data output by the video sending party according to the window resolution information, and outputting the video data to the server.
9. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method as set forth in claim 1.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method as claimed in claim 3.
11. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method as claimed in claim 5.
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