CN106817590A - The system and method that dynamic control multiple video is downloaded - Google Patents

Abstract

A system for dynamically controlling multiple video downloads, comprising at least one electronic device, a display device, and a client connected to the at least one electronic device and the display device, the at least one electronic device stores videos, and the video Including a plurality of video fragments, the client includes a download module, the download module is used to download each video fragment according to the screen ratio and bandwidth variation trend of the video, and the client is downloading In the process of adjusting the real-time bandwidth change trend of the download, the display device is used to play the video downloaded by the client. The present invention further provides a method for dynamically controlling multiple video downloads.

Description

System and method for dynamically controlling multiple video downloads

technical field

The invention relates to the field of communication technology, in particular to a system and method for dynamically controlling multiple video downloads.

Background technique

With the continuous development of network conditions, displaying different images on the same screen has become an increasing demand of future consumers. Usually, when the client selects a video to be played, it will preferentially select a video with a higher bit rate for playback. In this way, when the client has multiple videos to play, the client will play the video according to the bit rate, and the later ones can only choose the video with a lower bit rate to play, so that the quality of the played video is very low. Low.

Contents of the invention

In view of the above, it is necessary to provide a system and method for dynamically controlling multiple video downloads that can guarantee image quality.

A system for dynamically controlling multiple video downloads, comprising at least one electronic device, a display device, and a client connected to the at least one electronic device and the display device, the at least one electronic device stores videos, and the video Including a plurality of video fragments, the client includes a download module, the download module is used to download each video fragment according to the screen ratio and bandwidth variation trend of the video, and the client is downloading In the process of adjusting the real-time bandwidth change trend of the download, the display device is used to play the video downloaded by the client.

Further, the download module downloads each video segment in the order of screen ratio from large to small and bandwidth variation trend from low to high.

Further, the client includes a calculation module for calculating the screen ratio and a real-time bandwidth variation trend, and the calculation module is also used for dividing the video segments to be played of each electronic device according to a real-time buffering status and a real-time buffering status. A real-time bandwidth change trend is classified, and the download module preferentially downloads video fragments with insufficient real-time buffering status and the largest screen ratio according to the video fragments classified by the calculation module, and then according to the real-time bandwidth change trend from low to high The video fragments with insufficient real-time buffering status are sequentially downloaded. When downloading the video fragments with sufficient buffering status, the download module downloads the video fragments in order from low to high according to the real-time bandwidth variation trend.

Further, the bandwidth change trend includes a bandwidth change trend lower limit and a bandwidth change trend upper limit, and the client includes an adjustment module, when the real-time bandwidth change trend is lower than the frequency When the lower limit value of the wide variation trend is higher than the upper limit value of the bandwidth variation trend, the adjustment module is used to adjust the real-time bandwidth variation trend so that the real-time bandwidth variation trend is between the bandwidth variation trend Between the lower limit value and the lower limit value of the bandwidth change trend.

A method for dynamically controlling multiple video downloads, comprising the following steps: a segmentation module of each electronic device divides the video into a plurality of video fragments; a download module of a client terminal performs a step of processing the video according to the screen ratio and bandwidth variation trend Each video segment is downloaded, and the client adjusts the real-time bandwidth change trend of the download during the downloading process; and the display device plays the video downloaded by the client.

Further, the download module downloads each video segment in the order of screen ratio from large to small and bandwidth variation trend from low to high.

Further, the downloading step also includes: the downloading module downloads the first video segment of the video with the lowest bandwidth and records the download speed, and a calculation module of the client calculates the downloading module to download the first segment. The actual time consumption and screen ratio of the video fragments are arranged in descending order according to the screen ratio. The download module downloads the video fragments for each video in descending order of the screen ratio and sends them to the display device.

Further, the downloading step also includes: the calculation module classifies the video fragments to be played of each electronic device according to a real-time buffer state and a real-time bandwidth change trend, and the download module classifies the video segments according to the calculation module Classified video fragments are firstly downloaded with insufficient real-time buffering status and the largest screen ratio, and then download video fragments with insufficient real-time buffering status according to the order of real-time bandwidth change trend from low to high.

Further, the downloading step further includes: when downloading the video fragments in sufficient buffer state, the downloading module downloads the video fragments in order from low to high according to the real-time bandwidth change trend.

Further, the bandwidth change trend includes a bandwidth change trend lower limit value and a bandwidth change trend upper limit value, when the real-time bandwidth change trend is lower than the bandwidth change trend lower limit value or higher than When the upper limit value of the bandwidth change trend is reached, an adjustment module of the client is used to adjust the real-time bandwidth change trend so that the real-time bandwidth change trend is between the lower limit value of the bandwidth change trend and the Between the lower limit values of the bandwidth change trend.

Compared with the prior art, in the above-mentioned system for dynamically controlling multiple video downloads and the method for dynamically controlling multiple video downloads, the video is divided into multiple video fragments, and the download module downloads according to the screen Proportion and bandwidth change trend Download each video fragment, and adjust the real-time bandwidth change trend of the download during the download process. In this way, the picture quality of each video can be guaranteed.

Description of drawings

FIG. 1 is a system environment diagram of a preferred embodiment of a system for dynamically controlling multiple video downloads according to the present invention.

FIG. 2 is a schematic structural diagram of the system for dynamically controlling multiple video downloads in FIG. 1 .

FIG. 3 is a flow chart of implementing a method for dynamically controlling multiple video downloads by using the system for dynamically controlling multiple video downloads in FIG. 2 .

FIG. 4 is a flowchart of a method for downloading a next video in the method for dynamically controlling multiple video downloads in FIG. 3 .

Description of main component symbols

A system for dynamically controlling multiple video downloads 100 electronic device 10 Segmentation module 11 sending module 13 memory 15 processor 17, 32 client 30 storage device 31 download module 33 record module 34 computing module 35 search module 36 adjustment module 37 display device 50

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

detailed description

Please refer to Fig. 1, in a preferred embodiment of the present invention, a system 100 for dynamically controlling multiple video downloads includes at least one electronic device 10, a client 30 connected to the at least one electronic device 10, and a connection The display device 50 of the client 30 . In one embodiment, the at least one electronic device 10 , the client 30 and the display device 50 may be connected in a wireless or wired manner. The client 30 may receive the video from the at least one electronic device 10 for processing and send it to the display device 50 for display on the display device 50 .

Please refer to FIG. 2 , in one embodiment, the at least one electronic device 10 can be a server, a personal computer, a cabinet server, etc., which can transmit video files to the client 30 through an existing communication protocol. The communication protocol may be a hypertext transfer protocol (Hyper Text Transport Protocol, HTTP), a transmission control protocol (Transmission Control Protocol, TCP) or a network protocol. In one embodiment, the at least one electronic device 10 includes two or more electronic devices. In this embodiment, the at least one electronic device 10 includes four electronic devices, and each electronic device stores a video that can be played on the display device 50 . Each video is divided into multiple video segments. In one embodiment, each electronic device includes a segmentation module 11 and a sending module 13 connected to the segmentation unit 11 . The segmentation module 11 can be used to divide the video into multiple video slices. The sending module 13 can be used to send the plurality of video fragments to the client 30 . In this embodiment, both the segmentation module 11 and the sending module 13 of the present invention are stored in the memory 15 of the electronic device 10, and are executed by one or more processors (one processor 17 in this embodiment) Execute to complete the present invention.

In this embodiment, the client 30 described in the present invention can also be divided into one or more modules, and the one or more modules are all stored in the storage device 31 of the client 30, and one or more processor (a processor 32 in this embodiment) to complete the present invention. For example, referring to FIG. 2 , the multiple modules of the client 30 of the present invention may include a download module 33 , a record module 34 , a calculation module 35 , a search module 36 , and an adjustment module 37 .

The download module 33 is used for downloading the video screen segments in each electronic device 10 . During the specific implementation process, the download module 33 first downloads the first video segment of each first electronic device 10 with the lowest bandwidth, and the record module 34 records the download speed. The calculating module 35 is used to calculate the ratio of the actual time consumed by the downloading module 33 for downloading the first video segment to the frame size of the video of each electronic device 10 that needs to be displayed on the display device 50 . In one embodiment, the screen proportions of the videos of each electronic device 10 that need to be displayed on the display device 50 are arranged in descending order. When the screen ratios of the videos are arranged smoothly in descending order, the download module 33 is used to download N video fragments for each video according to the order of the screen ratios from large to small, and predict the next video fragment actual time-consuming. When the videos of all electronic devices 10 are downloaded, the display device 50 can play the videos of each electronic device 10 . In one embodiment, the download module 33 downloads 3 video segments for each video in descending order of screen ratio, and then plays them on the display device 50 , that is, N=3.

When the display device 50 needs to play the next video of each electronic device 10, the calculation module 35 is used to classify all video segments of each electronic device 10 according to the real-time buffer status and real-time bandwidth change trend, The download module 33 can download the next video segment according to the order of classification by the calculation module 35 . In one embodiment, the real-time buffer status includes a real-time buffer sufficient status and a real-time buffer insufficient status. Generally speaking, the bandwidth variation trend includes a bandwidth variation trend upper limit and a bandwidth variation trend lower limit. For example, the upper limit value of the bandwidth change trend is 1.05, and the lower limit value of the bandwidth change trend is 0.95. When the real-time bandwidth change trend is higher than the bandwidth change trend upper limit value, the real-time The bandwidth change trend is too fast; when the real-time bandwidth change trend is lower than the lower limit value of 0.95; the real-time bandwidth change trend is too slow, when the real-time bandwidth change trend is between the When the lower limit of the bandwidth change trend is between 0.95 and 1.05, the real-time bandwidth change trend is moderate.

Specifically, when the difference between the total number of downloaded video fragments and the number of played video fragments is greater than N (N=3), the calculation module 35 puts the video fragments into a real-time buffer An area with a sufficient state, and the video fragments are classified according to the real-time bandwidth change trend. That is, the first type of real-time buffering status is sufficient video fragmentation: the real-time bandwidth change trend is too slow video fragmentation (the real-time bandwidth change trend is lower than the lower limit of the bandwidth change trend of 0.95); the second type of real-time buffering Sufficient state video fragmentation: video fragmentation with moderate real-time bandwidth change trend (the real-time bandwidth change trend is between the lower limit value of the bandwidth change trend of 0.95 and the lower limit value of the bandwidth change trend of 1.05 ); the third type of video fragmentation with sufficient real-time buffering status: video fragmentation with too fast real-time bandwidth change trend (the real-time bandwidth change trend is higher than the upper limit value of 1.05 of the bandwidth change trend).

When the difference between the total number of downloaded video fragments and the number of played video fragments is less than N (N=3), the calculation module 35 puts the video into an insufficient real-time buffer state area. And the video fragments are classified according to the real-time bandwidth change trend. That is, the first type of real-time buffering status is insufficient for video fragmentation: the real-time bandwidth change trend is too slow for video fragmentation (the real-time bandwidth change trend is lower than the lower limit of the bandwidth change trend of 0.95); the second type of real-time buffering Insufficient video fragmentation: the real-time bandwidth change trend is moderate video fragmentation (the real-time bandwidth change trend is between the lower limit value of the bandwidth change trend of 0.95 and the lower limit value of the bandwidth change trend of 1.05 ); the third type of video fragmentation with insufficient real-time buffering status: video fragmentation with too fast real-time bandwidth change trend (the real-time bandwidth change trend is higher than the upper limit value of 1.05 of the bandwidth change trend).

When downloading, the downloading module 33 first downloads the video fragments in the area where the real-time buffer state is insufficient. When downloading the video fragments in the area where the real-time buffering status is insufficient, the search module 36 is used to search for the video fragment with the largest frame ratio in the video fragments. When there is a video segment with the largest frame ratio in the video segment in the area where the real-time buffer state is insufficient, the download module 33 first downloads the video segment with the largest frame ratio. When there is no video fragment with the largest screen ratio in the video fragments of the insufficient real-time buffer state area, the search module 36 is used to search for the video fragment with the lowest real-time bandwidth variation trend, and the download module 33 can According to the order of the real-time bandwidth change trend from low to high, download the real-time bandwidth change trend too slow video fragment, the real-time bandwidth change trend moderate video fragment and the real-time bandwidth change trend too fast video fragment.

When the video fragments in the area with insufficient real-time buffering state are downloaded, the download module 33 can download the video fragments in the area with sufficient real-time buffering state. When downloading the video fragments in the region with sufficient real-time buffering status, the download module 33 downloads the video fragments whose real-time bandwidth change trend is too slow and whose real-time bandwidth change trend is moderate according to the order of real-time bandwidth change trend from low to high Video fragmentation and real-time bandwidth change trend is too fast Video fragmentation.

When all the video segments of the next video are downloaded, the display device 50 can play the next video.

Certainly, when the downloading module 33 downloads fragments, if the real-time bandwidth change trend of the downloaded video fragments is lower than the lower limit of the bandwidth change trend of 0.95 or higher than the bandwidth change trend upper limit of 1.05, the The adjustment module 37 can be used to adjust the real-time bandwidth change trend, so that the real-time bandwidth change trend is between 0.95 and 1.05. .

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units or modules according to needs. The completion of the modules means that the internal structure of the storage device is divided into different functional units or modules, so as to complete all or part of the functions described above. Each functional unit and module in the implementation manner may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application.

Please refer to FIG. 3 . FIG. 3 is a flowchart of a method 300 for dynamically controlling multiple video downloads implemented by the system 100 for dynamically controlling multiple video downloads in an embodiment of the present invention. The method 300 for dynamically controlling multiple video downloads includes the following steps:

Step 301: The download module 33 downloads the first video segment of each first electronic device 10 with the lowest bandwidth and the record module 34 records the download speed.

Step 302: The calculation module 35 calculates the actual time-consuming of downloading the first video segment by the download module 33 and the screen ratio that the video of each electronic device 10 needs to display on the display device 50, and according to the size of the screen ratio descending sort.

Step 303: The downloading module 33 downloads three video fragments for each video in each electronic device 10 according to the order of screen ratio from large to small, and predicts the actual time consumption of the next video fragment. In an embodiment, the download module 33 may download more than 3 video segments, and may also be less than 3 or more than 3.

Step 304: The client terminal 30 judges whether the download module 33 has downloaded the 3 video segments of each video, if yes, proceed to step 305, if not, return to step 303.

Step 305: When all three video segments of each video are downloaded, the client 30 can transmit the video to the display device 50 for playback.

Please refer to FIG. 4 . FIG. 4 is a flow chart of downloading the next video in a method 300 for dynamically controlling multiple video downloads in an embodiment of the present invention. The downloading method of described downloading next video comprises the following steps:

Step 401: The calculation module 35 classifies all video segments of each electronic device 10 according to real-time buffering status and real-time bandwidth change trend. The real-time buffer status includes a real-time buffer insufficient status and a real-time buffer sufficient status. When classifying, if the gap between the total number of downloaded video fragments and the number of played video fragments is greater than N (N=3), the calculation module 35 puts the video fragments into a real-time buffer State sufficient area; if the gap between the total number of downloaded video fragments and the number of played video fragments is less than N (N=3), the calculation module 35 puts the video into a real-time buffer state insufficient area . If the video segment belongs to the state of insufficient real-time buffer, proceed to step 402; if the video segment belongs to the state of sufficient real-time buffer, proceed to step 403.

Step 402: The video segments with insufficient buffering status are classified according to the real-time bandwidth change trend. That is, the first type of real-time buffering status is insufficient for video fragmentation: the real-time bandwidth change trend is too slow for video fragmentation (the real-time bandwidth change trend is lower than the lower limit of the bandwidth change trend of 0.95); the second type of real-time buffering Insufficient video fragmentation: the real-time bandwidth change trend is moderate video fragmentation (the real-time bandwidth change trend is between the lower limit value of the bandwidth change trend of 0.95 and the lower limit value of the bandwidth change trend of 1.05 ); the third type of video fragmentation with insufficient real-time buffering status: video fragmentation with too fast real-time bandwidth change trend (the real-time bandwidth change trend is higher than the upper limit value of 1.05 of the bandwidth change trend).

Step 403: The video segments with sufficient buffering status are classified according to the real-time bandwidth variation trend. That is, the first type of real-time buffering status is sufficient video fragmentation: the real-time bandwidth change trend is too slow video fragmentation (the real-time bandwidth change trend is lower than the lower limit of the bandwidth change trend of 0.95); the second type of real-time buffering Sufficient state video fragmentation: video fragmentation with moderate real-time bandwidth change trend (the real-time bandwidth change trend is between the lower limit value of the bandwidth change trend of 0.95 and the lower limit value of the bandwidth change trend of 1.05 ); the third type of video fragmentation with sufficient real-time buffering status: video fragmentation with too fast real-time bandwidth change trend (the real-time bandwidth change trend is higher than the upper limit value of 1.05 of the bandwidth change trend).

Step 404: The search module 36 first searches whether there is a video segment with the largest frame ratio among the video segments with insufficient buffer status, if yes, proceed to step 405, if not, proceed to step 406.

Step 405: The download module 33 first downloads the video segment with the largest screen ratio.

Step 406: The search module 36 searches for the video segment with the lowest real-time bandwidth variation trend.

Step 407: The download module 33 sequentially downloads the real-time bandwidth changing trend too slow video fragment, the real-time bandwidth changing trend moderate video fragment and the real-time bandwidth changing trend too fast according to the order of the real-time bandwidth changing trend from low to high Video fragmentation. In one embodiment, when there is no video segment with the largest screen ratio in the video segment with insufficient buffering status, the download module 33 firstly downloads the video segment according to the real-time bandwidth in the video segment with insufficient buffering status. The change trend is downloaded in order from low to high in order of slow real-time bandwidth change trend video fragments, moderate real-time bandwidth change trend video fragments and fast real-time bandwidth change trend video fragments. When the video fragments with insufficient buffering status have been downloaded, the download module 33 downloads the real-time bandwidth changes successively according to the order of the real-time bandwidth variation trend from low to high in the video fragments with sufficient buffering state. The trend is too slow video fragmentation, the real-time bandwidth change trend is moderate video fragmentation, and the real-time bandwidth change trend is too fast video fragmentation. It can be understood that when the downloading module 33 downloads fragments, if the real-time bandwidth change trend of the downloaded video fragments is lower than the lower limit of the bandwidth change trend of 0.95 or higher than the upper limit of the bandwidth change trend of 1.05, The adjustment module 37 can be used to adjust the real-time bandwidth change trend, so that the real-time bandwidth change trend is between the lower limit value of the bandwidth change trend of 0.95 and the lower limit value of the bandwidth change trend of 1.05 between.

Step 408: The client 30 judges whether all the video segments have been downloaded, if yes, the whole process ends, if not, return to step 401 to continue downloading.

Those skilled in the art can understand that the composition structure shown in FIG. 2 does not constitute a limitation to the system 100 for dynamically controlling multiple video downloads, and may include more or less components than those shown in the figure, or combine certain components, Or different component arrangements, and the method for dynamically controlling multiple video downloads in Fig. 3 and Fig. 4 also adopts more or less components shown in Fig. 2, or combines some components, or different component arrangements accomplish.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, several equivalent substitutions or obvious modifications are made without departing from the concept of the present invention, and the performance or use is the same, all should be regarded as belonging to the present invention by the submitted claims The scope of patent protection determined by the book.

Claims (10)

1. A system for dynamically controlling multiple video downloads, comprising at least one electronic device, a display device and a client connected to the at least one electronic device and the display device, the at least one electronic device stores videos, so The video includes a plurality of video fragments, and it is characterized in that: the client includes a download module, and the download module is used to download each video fragment according to the picture ratio and bandwidth variation trend of the video, During the downloading process, the client adjusts the changing trend of the downloaded real-time bandwidth, and the display device is used to play the video downloaded by the client. 2. The system for dynamically controlling a plurality of video downloads as claimed in claim 1, wherein the download module downloads each video fragment according to the order of screen ratio from large to small and bandwidth variation trend from low to high . 3. the system for dynamically controlling a plurality of video downloads as claimed in claim 2, is characterized in that: described client comprises a calculation module that is used for calculating picture ratio and a real-time bandwidth variation trend, and described calculation module also uses Classify the video fragments to be played of each electronic device according to a real-time buffer state and a real-time bandwidth change trend, the download module prioritizes downloading of the video fragments classified by the calculation module if the real-time buffer state is insufficient and the screen is insufficient Video fragments with the largest ratio, then download the video fragments with insufficient real-time buffering status according to the order of real-time bandwidth variation trend from low to high, when downloading the video fragments in the sufficient buffering state, the download module according to the real-time The video fragments are downloaded in descending order of bandwidth variation trends. 4. The system for dynamically controlling a plurality of video downloads as claimed in claim 1, wherein the bandwidth variation trend includes a bandwidth variation trend lower limit and a bandwidth variation trend upper limit, and the customer The terminal includes an adjustment module, and when the real-time bandwidth change trend is lower than the lower limit of the bandwidth change trend or higher than the upper limit of the bandwidth change trend, the adjustment module is used to adjust the real-time bandwidth change trend, so that the real-time bandwidth change trend is between the bandwidth change trend lower limit value and the bandwidth change trend lower limit value. 5. A method for dynamically controlling multiple video downloads, comprising the following steps: Segmentation step: a segmentation module of each electronic device divides the video into a plurality of video segments; Downloading step: a download module of a client downloads each video segment according to the picture ratio and bandwidth variation trend of the video, and the client adjusts the real-time bandwidth variation trend of downloading during the downloading process; and Playing step: the display device plays the video downloaded by the client. 6. The method for dynamically controlling a plurality of video downloads according to claim 5, wherein the download module downloads each video segment in the order of screen ratio from large to small and bandwidth variation trend from low to high . 7. The method for dynamically controlling multiple video downloads as claimed in claim 6, said downloading step further comprising: said downloading module downloads the first video segment of said video with the lowest bandwidth and records the download speed, so A calculation module of the client calculates the actual time-consuming and picture ratio of downloading the first video segment by the download module, and arranges them in descending order according to the picture proportion, and the download module calculates each video according to the picture proportion from large to small The video segments are downloaded in sequence and sent to the display device. 8. The method for dynamically controlling a plurality of video downloads as claimed in claim 7, the downloading step further comprising: the calculation module divides the video fragments to be played of each electronic device according to a real-time buffer state and a real-time frequency Wide variation trends are classified, and the download module preferentially downloads the video fragments with insufficient real-time buffering status and the largest screen ratio according to the video fragments classified by the calculation module, and then downloads the real-time Video fragments with insufficient buffering status. 9. The method for dynamically controlling a plurality of video downloads as claimed in claim 8, the downloading step further comprising: when downloading the video fragments in the sufficient buffer state, the downloading module is configured according to the real-time bandwidth variation trend The video segments are downloaded in descending order. 10. The method for dynamically controlling a plurality of video downloads as claimed in claim 5, wherein the bandwidth variation trend includes a bandwidth variation trend lower limit and a bandwidth variation trend upper limit, when the When the real-time bandwidth change trend is lower than the lower limit value of the bandwidth change trend or higher than the upper limit value of the bandwidth change trend, an adjustment module of the client is used to adjust the real-time bandwidth change trend, so that the The real-time bandwidth change trend is between the bandwidth change trend lower limit value and the bandwidth change trend lower limit value.