WO2020238065A1

WO2020238065A1 - Media file downloading method and apparatus, and terminal and medium

Info

Publication number: WO2020238065A1
Application number: PCT/CN2019/118543
Authority: WO
Inventors: 马潜; 许可
Original assignee: 平安科技（深圳）有限公司
Priority date: 2019-05-28
Filing date: 2019-11-14
Publication date: 2020-12-03
Also published as: CN110121100B; CN110121100A

Abstract

Provided are a media file downloading method and apparatus, and a terminal and a medium. The method comprises: acquiring an instant speed and an average speed of a network; determining, according to the instant speed and the average speed, whether a network speed of the network is sharply increased or sharply decreased; and if the network speed of the network is sharply increased or sharply decreased, selecting, according to a pre-stored media configuration file, a media file corresponding to a code rate and the instant speed to perform downloading. The problem of audio and videos lagging during playing or taking a relatively long time to enter an optimal playing state due to the fact that a user terminal cannot be switched, in a timely manner, to downloading of a media file corresponding to a code rate and a changed network speed when the network speed fluctuates greatly is solved.

Description

Method, device, terminal and medium for downloading media files

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910461908.5, and the invention title is "media file download method, device, terminal and computer readable storage medium" on May 28, 2019, all of which The content is incorporated in this application by reference.

Technical field

This application belongs to the field of computer technology, and in particular relates to a method, device, terminal and medium for downloading media files.

Background technique

When using streaming technology to download media files such as audio or video on the network, the audio file or video file is continuously and real-time transmitted from the server to the terminal. The user does not have to wait for the entire media file to be downloaded before playing the media. It only takes a few seconds Or media playback can be performed with a startup delay of more than ten seconds, which effectively shortens the startup delay and saves the buffer capacity of the terminal.

For the same audio and video program, the server generally provides multiple media files of different qualities to adapt to downloading and playing under different network conditions. Each media file corresponds to a bit rate, and each media file contains multiple fragments. One fragment is divided into several data packets. After the terminal downloads the data packet corresponding to each fragment, the fragment is the basic playback unit. Audio and video playback.

When the terminal downloads fragments, it generally calculates the network speed of the network, and selects a media file whose bit rate corresponds to the network speed of the network to download. However, based on the current streaming media transmission protocol, when the network speed fluctuates greatly, the terminal generally cannot switch to the download of media files corresponding to the bit rate and the changed network speed in time, causing the terminal's audio and video playback to be prone to freezes Or it takes a long time to enter the best playback state.

Summary of the invention

technical problem

In view of this, the embodiments of the present application provide a method, device, terminal, and medium for downloading media files, which can solve the problem that when the network speed fluctuates greatly, the terminal cannot switch to the code rate corresponding to the changed network speed in time. The downloading of media files causes technical problems in which audio and video playback may freeze or enter the optimal playback state for a long time.

The solution to the problem

Technical solutions

The first aspect of the embodiments of the present application provides a method for downloading media files, including:

Get the real-time speed and average speed of the network;

Judging whether the network speed of the network has a steep rise or fall according to the instant speed and the average speed;

If the network speed of the network rises or drops steeply, the media file with the code rate corresponding to the instant speed is selected for download according to the pre-stored media configuration file.

A device for downloading media files provided in the second aspect of the embodiments of the present application includes:

The acquisition unit is used to acquire the instantaneous speed and average speed of the network;

A judging unit, configured to judge whether the network speed of the network has a steep rise or fall according to the instantaneous speed and the average speed;

The downloading unit is configured to select a media file with a code rate corresponding to the instant speed according to a pre-stored media configuration file for downloading if the network speed of the network rises or drops steeply.

A third aspect of the embodiments of the present application provides a terminal, including a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, and the processor executes the computer-readable instructions When implementing the following steps:

Get the real-time speed and average speed of the network;

The fourth aspect of the embodiments of the present application provides a computer-readable storage medium, the computer-readable storage medium stores computer-readable instructions, and the computer-readable instructions implement the following steps when executed by at least one processor:

Get the real-time speed and average speed of the network;

The beneficial effects of the invention

Beneficial effect

In the embodiment of the present application, the terminal obtains the instantaneous speed and average speed of the network, and judges whether the network speed of the network has a steep rise or drop according to the instantaneous speed and the average speed, instead of judging the network speed only according to the average speed. Whether the network speed of the network has a steep rise or fall, therefore, when the network speed of the network rises or falls steeply, the media with the bit rate corresponding to the instant speed can be selected in time according to the pre-stored media configuration file The file is downloaded, without downloading at least one fragmented data packet after the network speed of the network has a steep rise or fall, in order to calculate the changed network speed, which prevents the terminal from being unable to switch to the code rate and changing in time The download of media files corresponding to the speed of the network causes the audio and video playback to freeze or enter the optimal playback state for a long time.

Brief description of the drawings

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the accompanying drawings needed in the description of the embodiments or the prior art. It should be understood that the following drawings only show some of the present application. The embodiments should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative work, other related drawings can be obtained from these drawings.

FIG. 1 is a schematic diagram of the implementation process of a method for downloading media files provided by an embodiment of the present application;

2 is a schematic diagram of a specific implementation flow of step 101 of a method for downloading media files provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a specific implementation process of calculating the current instantaneous speed of the network provided by an embodiment of the present application;

4 is a schematic diagram of a data package downloaded by a terminal according to an embodiment of the present application;

5 is a schematic diagram of a specific implementation flow of step 102 of a method for downloading media files provided by an embodiment of the present application;

6 is a schematic diagram of a first specific implementation flow of step 103 of a method for downloading media files provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a second specific implementation flow of step 103 of a method for downloading media files provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a media file downloading device provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the present application.

Invention embodiment

Embodiments of the invention

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and are not used to limit the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present application.

When using streaming technology (HTTP Live Streaming, HLS) to download media files such as audio or video on the network, the HLS client first receives the configuration file in the m3u8 format issued by the audio and video server, and then calculates the network speed according to the The network speed selects the media file corresponding to the bandwidth (code rate) to download, so that the terminal can play audio and video smoothly.

However, the current method of calculating the network speed of the network is calculated based on the number of bytes of the downloaded 50 data packets divided by the download time. Usually there are less than 50 data packets in a fragment. Therefore, when the network speed fluctuates greatly, it is necessary to download the data of at least one fragment after the network speed fluctuates greatly in order to calculate a more accurate network speed, which leads to the terminal It will not be able to switch to the download of media files corresponding to the bit rate and the changed network speed in time, resulting in the problem that the audio and video playback of the terminal is prone to freeze or enter the optimal playback state for a long time.

For example, according to the 50 data packets downloaded before large fluctuations in network speed, the corresponding network speed when downloading each data packet is 350KBps, that is, the network speed is stabilized at 350KBps. The network speed corresponding to the first data packet is 140KBps, the network speed corresponding to the second data packet downloaded is 160KBps, the network speed corresponding to the third data packet downloaded is 150KBps, and the average speed of these three data packets is 150KBps , About 0.42 times of 350KBps, that is, at this time, the network speed has already fluctuated greatly. However, if you continue to calculate the network speed based on the number of bytes of the downloaded 50 data packets divided by the total download time, the calculated network speed is (350KBps*47+140KBps+160KBps+150KBps)/50=338KBps, however Compared with 350KBps, 338KBps cannot determine that the network speed fluctuates greatly. Therefore, it is necessary to download at least one fragmented data packet after the network speed fluctuates greatly in order to calculate the changed network speed. It is impossible to switch to the download of the media file corresponding to the bit rate and the changed network speed in time, which causes the problem that the audio and video playback of the terminal is prone to freeze or enter the optimal playback state for a long time.

In the embodiment of the present application, the terminal obtains the instantaneous speed and average speed of the network, and judges whether the network speed of the network rises or drops steeply according to the instant speed and the average speed, instead of just judging the network speed of the network based on the average speed Whether there is a steep rise or fall, therefore, when the network speed of the network rises or falls steeply, the media file with the bit rate corresponding to the instant speed can be selected for download in time according to the pre-stored media configuration file, and there is no need to download After the network speed of the network rises or drops steeply, download at least one fragmented data packet to calculate the changed network speed, which prevents the terminal from being unable to switch to the media file corresponding to the changed network speed in time. Download, causing the audio and video playback to freeze or enter the optimal playback state for a long time.

FIG. 1 shows a schematic diagram of the implementation process of a method for downloading media files provided by an embodiment of the present application, including step 101 to step 103.

Step 101: Obtain the instantaneous speed and average speed of the network.

When using the HLS client to play audio and video, the terminal first receives the configuration file in m3u8 format issued by the audio and video server, and stores it, and then uses streaming technology to download media files such as audio or video on the network , Obtain the network speed of the terminal, and select the media file of the corresponding bit rate to download according to the network speed, so that the terminal can play audio and video smoothly.

In the embodiment of the present application, acquiring the network speed of the terminal includes acquiring the instantaneous speed and the average speed of the network.

Optionally, as shown in FIG. 2, the obtaining the instantaneous speed and average speed of the network may include: step 201 to step 202.

Step 201: Obtain the number of bytes and download time of each of the newly downloaded m data packets, and obtain the total number of bytes and total download time of the newly downloaded n data packets; n and m are greater than or equal to 1. An integer of and n is greater than m.

Step 202: Calculate m instantaneous speeds of the network using the number of bytes of each data packet in the m data packets and the download time; use the total number of bytes and the total download time of the n data packets The average speed of the network is calculated.

Wherein, the above-mentioned values of n and m can be selected according to actual application scenarios. This application does not impose any restriction on this. It is only necessary to ensure that n and m are integers greater than or equal to 1, and n is greater than m.

For example, the value of n can be 50, the value of m can be 3, then the number of bytes and download time of each data packet in the 50 latest downloaded data packets is obtained, and the 3 newly downloaded data packets are obtained After the total number of bytes and the total download time of the three data packets, the three instantaneous speeds of the network can be calculated using the number of bytes of each of the three data packets and the download time; The total number of bytes and the total download time are calculated to get the average speed of the network.

Wherein, as shown in FIG. 3, in step 202, calculating the m instantaneous speeds of the network by using the number of bytes of each of the m data packets and the download time may specifically include: step 301 or step 302.

Step 301: Calculate the first instant speed of the network by using the byte count and download time of the last downloaded data packet among the m data packets, and use the last two downloaded data packets among the m data packets. The total number of bytes of each data packet and the total download time are calculated to obtain the second instantaneous speed of the network, and so on, until the mth instantaneous speed of the network is obtained.

For example, as shown in Figure 4, data package 1, data package 2, and data package 3 are the three most recently downloaded data packages, and data package 1 is the last downloaded data package. In this embodiment, data package 1 is used. Divide the number of bytes by its download time to get the first instant speed of the network; use the total number of bytes of packet 1 and packet 2 divided by the download time of both to get the second instant speed of the network; use data The total number of bytes of packet 1, data packet 2, and data packet 3 is divided by the download time of the three to obtain the third instantaneous speed of the network, and the instantaneous speed of 3 networks is obtained in total.

Step 302: Use the number of bytes and download time of each data packet in the m data packets to respectively calculate an instant speed of the network, and obtain a total of m instant speeds of the network.

For example, as shown in Figure 4, data package 1, data package 2, and data package 3 are the three newly downloaded data packages, and data package 1 is the last downloaded data package. In this embodiment, data package 1 is used Divide the number of bytes by its download time to get the first instant speed of the network; divide the number of bytes in packet 2 by its download time to get the second instant speed of the network; divide the number of bytes in packet 3 by it The download time gets the third instant speed of the network, and a total of 3 instant speeds of the network.

Step 102: Judging whether the network speed of the network has a steep rise or fall according to the instantaneous speed and the average speed.

After obtaining the instantaneous speed and average speed of the network, it can be determined whether the network speed of the network has a steep rise or drop according to the instant speed and the average speed.

Optionally, as shown in FIG. 5, judging whether the network speed of the network has a steep rise or fall according to the instant speed and the average speed may include: step 501 to step 502.

Step 501: If the m instantaneous speeds of the network are all greater than the average speed of the first multiple, it is determined that the network speed of the network has risen sharply.

Step 502: If the m instantaneous speeds of the network are all less than the second multiple of the average speed, it is determined that the network speed of the network drops sharply.

Since the average speed is calculated based on more data packets, it can reflect the overall speed level of the network, while the instantaneous speed of the network is the speed calculated based on fewer data packets, which can reflect the latest speed changes of the network Therefore, by comparing the instantaneous speed with the average speed, it can be reasonably judged whether the network speed of the network has a steep rise or a steep drop.

In the embodiment of the present application, the values of the first multiple and the second multiple may be set according to actual application scenarios, which is not limited in this application. For example, the first multiple is 2-5, and the double multiple is 0.7-0.1.

In the embodiment of this application, the m instant speeds of the network are compared with the average speed of the first multiple and/or the average speed of the second multiple, and the m instant speeds of the network are all greater than the first multiple. When the average speed is one multiple, it is determined that the network speed has a steep rise; when the m instantaneous speeds of the network are all less than the average speed of the second multiple, it is determined that the network speed of the network drops sharply, which can make the network It is more accurate to judge whether the network speed has a steep rise or fall.

In some embodiments of the present application, the judging whether the network speed of the network has a steep rise or fall according to the real-time speed and the average speed may also include: if one of the m real-time speeds of the network is preset If the instantaneous speeds of the number are greater than the average speed of the first multiple, it is determined that the network speed has risen sharply; if the preset number of instantaneous speeds in the m instant speeds of the network are all less than the average speed of the second multiple , It is determined that the network speed has dropped sharply. Wherein, the preset number may be a number of m greater than the set multiple. For example, the set multiple may be 0.9, 0.85, or 0.8.

That is to say, when judging whether the network speed of the network has a steep rise or fall based on the instant speed and the average speed, it may not be necessary for the m instant speeds of the network to be all greater than the first multiple or less than the second multiple. It is determined that the network speed has a steep rise or fall, and only a part of the m real-time speeds of the network need to be greater than the first multiple or less than the second multiple of the average speed, It can be determined that the network speed has a steep rise or fall, so that there is a certain degree of redundancy in the judgment of whether the network speed has a steep rise or fall.

Step 103: If the network speed of the network rises or drops sharply, a media file with a code rate corresponding to the instant speed is selected for download according to a pre-stored media configuration file.

The pre-stored media configuration file stores audio and video stream information, and the audio and video stream information may include: a correspondence between a bit rate and a media file, and content type information of the media file.

For example, the corresponding relationship between the code rate stored in the pre-stored media configuration file and the media file, and the content type information of the media file are:

Audio and video stream 00: 40Kbps; there is audio stream, no video stream, there is 1 JPEG picture;

Audio and video stream 01: 120Kbps; there is audio stream, there is video stream (video stream resolution 176x144);

Audio and video stream 02: 300Kbps; there is audio stream and video stream (video stream resolution 320x180);

Audio and video stream 03: 500Kbps; there is audio stream, there is video stream (video stream resolution 400x224);

Audio and video stream 04: 800Kbps; there is audio stream and video stream (video stream resolution 480x270);

Audio and video stream 05: 1300Kbps; there is audio stream and video stream (video stream resolution 640x360);

Audio and video stream 06: 2200Kbps; there is audio stream and video stream (video stream resolution 1024x576).

In the embodiment of the present application, when it is determined that the network speed of the network has a steep rise or fall, the media file with the bit rate corresponding to the instant speed can be selected for downloading according to the pre-stored media configuration file, which avoids the network speed When large fluctuations occur, the terminal cannot switch to the download of media files corresponding to the bit rate and the changed network speed in time, resulting in a problem that audio and video playback is stuck or it takes a long time to enter the optimal playback state.

Wherein, when the number of instant speeds is greater than 2, the selecting a media file with a code rate corresponding to the instant speed according to a pre-stored media configuration file to download includes: selecting a code rate according to the pre-stored media configuration file and The media file corresponding to the average speed of the instant speed is downloaded.

For example, the currently playing audio and video stream is 300KBps audio and video stream 02, the average network speed is 350KBps, the second multiple is 0.5, and the calculated average speed of the three instant speeds is 150KBps, where the first instant speed is 150KBps; the second instantaneous speed is 160KBps; the third instantaneous speed is 140KBps; because the three instantaneous speeds of the network are all less than the second multiple of the average speed, it can be determined that the network speed has dropped sharply. At this time, the media file audio and video stream 01 with a bit rate corresponding to the average speed of 150KBps of the instant speed can be selected according to the pre-stored media configuration file for download. That is to say, it is possible to switch to the download of media files corresponding to the bit rate and the changed network speed in time starting from the fourth data packet after the network speed of the network has changed significantly, avoiding the terminal audio Video playback is prone to stalling or a long time to enter the best playback state.

For example, as shown in Table 1, through testing, it can be seen that when using the audio and video stream download method of this application to download audio and video files, the stall time of audio and video playback can be effectively reduced, and the audio and video playback can be effectively shortened The time to enter the best playback state avoids the problem that the terminal's audio and video playback is prone to freeze or enters the best playback state for a long time.

Table I:

Optionally, in some embodiments of the present application, as shown in FIG. 6, in the above step 103, if the network speed of the network rises sharply, the bit rate and the bit rate are selected according to the pre-stored media configuration file. The downloading of the media file corresponding to the instant speed may include: step 601 to step 603.

Step 601: If the network speed of the network rises sharply, it is determined whether the proportion of the downloaded segments of the media file that have been downloaded is greater than a first preset threshold.

Step 602: If it is less than the first preset threshold, directly select a media file with a code rate corresponding to the instant speed according to a pre-stored media configuration file to download.

Step 603: If it is greater than or equal to the first preset threshold, after the download of the segment of the media file being downloaded is completed, select a media file with a bit rate corresponding to the instant speed according to a pre-stored media configuration file. download.

When downloading audio and video streams, fragments are the most basic playback unit. For a fragment, there are only two options: either download it completely and play it, or not download it or discard a part after downloading it. Therefore, when the network speed of the network rises sharply and it is necessary to switch to the download of a higher bit rate audio and video stream, it can be judged whether the proportion of the completed fragments of the media file being downloaded is greater than the preset threshold, if it is greater than , The download of the audio and video stream with a higher bit rate will be switched to after the download of the segment of the media file being downloaded is completed, so as to avoid switching to the download of the audio and video stream with a higher bit rate when the cache is insufficient. Fragments that have not been downloaded are discarded, causing a freeze.

Wherein, the value of the first preset threshold may be determined according to actual application scenarios, which is not limited in this application. For example, the first preset threshold may be 95% or 90%.

Optionally, in some embodiments of the present application, as shown in FIG. 7, when the network speed fluctuates frequently, in order to avoid switching audio and video streams too frequently, in step 103, if the network speed of the network When a steep rise or fall occurs, the selection of a media file with a code rate corresponding to the instant speed according to a pre-stored media configuration file to download may further include: step 701 to step 703.

In step 701, if the network speed of the network rises or drops sharply, obtain the time interval between the steep rise and the steep drop in the network speed within a preset time period.

Step 702: If the number of times the time interval is less than the second preset threshold is less than the preset number of times, a media file with a code rate corresponding to the instant speed is selected for download according to a pre-stored media configuration file.

Step 703: If the number of times that the time interval is less than the second preset threshold is greater than or equal to the preset number of times, when the network speed rises sharply, the download of the media file of the current bit rate is maintained.

For example, the preset time period is 2 minutes. If the network speed of the network rises and drops continuously for 5 times within 2 minutes, it means that the network speed stability of the network is poor, and the network speed needs to be When the speed rises sharply, the download of the media file with the current bit rate is maintained to avoid frequent switching of audio and video streams, which may cause the video playback to freeze.

As shown in FIG. 8, an embodiment of the present application provides an apparatus 800 for downloading media files, including:

The obtaining unit 801 is configured to obtain the instantaneous speed and average speed of the network.

The judging unit 802 is configured to judge whether the network speed of the network has a steep rise or fall according to the instantaneous speed and the average speed.

The downloading unit 803 is configured to select a media file with a code rate corresponding to the instant speed according to a pre-stored media configuration file to download if the network speed of the network rises or drops steeply.

Optionally, the obtaining unit 801 is further specifically configured to:

Get the number of bytes and download time of each data packet in the latest downloaded m data packets, and get the total number of bytes and total download time of the latest n data packets downloaded; n and m are integers greater than or equal to 1, And n is greater than m;

The m instantaneous speeds of the network are calculated using the number of bytes of each data packet in the m data packets and the download time; the total number of bytes of the n data packets and the total download time are used to calculate the total speed State the average speed of the network.

Optionally, the obtaining unit 801 is further specifically configured to:

Calculate the first instant speed of the network by using the byte count and download time of the last downloaded data packet among the m data packets, and use the last two data packets downloaded in the m data packets The total number of bytes and the total download time are calculated to obtain the second instantaneous speed of the network, and so on, until the mth instantaneous speed of the network is obtained;

or,

The number of bytes and the download time of each data packet in the m data packets are respectively calculated to obtain an instant speed of the network, and a total of m instant speeds of the network are obtained.

Optionally, the determining unit 802 is further specifically configured to:

If the m instantaneous speeds of the network are all greater than the average speed of the first multiple, it is determined that the network speed of the network has risen sharply;

If the m instantaneous speeds of the network are all less than the second multiple of the average speed, it is determined that the network speed of the network drops sharply.

Optionally, the download unit 803 is also specifically configured to:

If the network speed of the network rises sharply, determining whether the proportion of the downloaded segments of the media file that have been downloaded is greater than a first preset threshold;

If it is less than the first preset threshold, directly select a media file with a code rate corresponding to the instant speed according to a pre-stored media configuration file for download;

If it is greater than or equal to the first preset threshold, after the download of the downloading segment of the media file is completed, a media file with a code rate corresponding to the instant speed is selected for download according to a pre-stored media configuration file.

Optionally, the download unit 803 is also specifically configured to:

If the network speed of the network rises or drops steeply, the time interval between the steep rise and the steep drop of the network speed within the preset time period is acquired;

If the number of times the time interval is less than the second preset threshold is less than the preset number of times, selecting a media file with a bit rate corresponding to the instant speed according to a pre-stored media configuration file for downloading;

If the number of times that the time interval is less than the second preset threshold is greater than or equal to the preset number of times, the download of the media file of the current bit rate is maintained when the network speed rises sharply.

It should be noted that, for the convenience and conciseness of the description, the specific working process of the media file downloading apparatus 800 described above can be referred to the corresponding process of the method described in FIG. 1 and FIG. 7, which will not be repeated here.

FIG. 9 is a schematic diagram of a terminal provided by an embodiment of the present application. As shown in FIG. 9, the terminal 9 includes a processor 90, a memory 91, and computer-readable instructions 92 stored in the memory 91 and running on the processor 90, such as a media file download program. When the processor 90 executes the computer-readable instructions 92, the steps in the above embodiments of the method for downloading various media files, such as steps 101 to 103 shown in FIG. 1, are implemented. Alternatively, when the processor 90 executes the computer-readable instructions 92, the functions of the modules/units in the foregoing device embodiments are implemented, for example, the functions of the modules 801 to 803 shown in FIG. 8.

The computer-readable instructions may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 91 and executed by the processor 90 to complete the application. The one or more modules/units may be a series of computer-readable instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer-readable instructions in the terminal. For example, the computer-readable instructions can be divided into an acquisition unit, a judgment unit, and a download unit. The specific functions of each unit are as follows: the acquisition unit is used to obtain the instantaneous speed and average speed of the network; The speed and the average speed determine whether the network speed of the network has a steep rise or fall; the download unit is used to select the bit rate and the bit rate according to the pre-stored media configuration file if the network speed of the network rises or falls steeply The media file corresponding to the instant speed is downloaded.

The terminal may be a mobile terminal such as a smart phone, or a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud server. The terminal may include, but is not limited to, a processor 90 and a memory 91. Those skilled in the art can understand that FIG. 9 is only an example of a terminal, and does not constitute a limitation on the terminal. It may include more or less components than those shown in the figure, or a combination of certain components, or different components, such as the The terminal may also include input and output devices, network access devices, buses, and so on.

The so-called processor 90 may be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (ASIC), Ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

The memory 91 may be an internal storage unit of the terminal, such as a hard disk or memory of the terminal. The memory 91 may also be an external storage device of the terminal, for example, a plug-in hard disk equipped on the terminal, a smart memory card (Smart Media Card, SMC), a Secure Digital (SD) card, and a flash memory card. (Flash Card) etc. Further, the memory 91 may also include both an internal storage unit of the terminal and an external storage device. The memory 91 is used to store the computer-readable instructions and other programs and data required by the terminal. The memory 91 can also be used to temporarily store data that has been output or will be output.

Those skilled in the art can clearly understand that for the convenience and conciseness of description, only the division of the above-mentioned functional units and modules is used as an example. In practical applications, the above-mentioned functions can be allocated to different functional units and modules as required. Module completion means dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist alone physically, or two or more units can be integrated into one unit. The above-mentioned integrated units can be hardware-based Formal realization can also be realized in the form of software functional units. In addition, the specific names of the functional units and modules are only used to facilitate distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working process of the units and modules in the foregoing system, reference may be made to the corresponding process in the foregoing method embodiment, which is not repeated here.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail or recorded in an embodiment, reference may be made to related descriptions of other embodiments.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the device/terminal embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or Components can be combined or integrated into another system, or some features can be omitted or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through computer-readable instructions, which can be stored in a non-volatile computer. In a readable storage medium, when the computer-readable instructions are executed, they may include the processes of the above-mentioned method embodiments. Wherein, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and/or volatile memory. The non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not a limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still implement the foregoing The technical solutions recorded in the examples are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application, and should be included in Within the scope of protection of this application.

Claims

A method for downloading media files, characterized in that it comprises:

Get the real-time speed and average speed of the network;

Judging whether the network speed of the network has a steep rise or fall according to the instant speed and the average speed;

If the network speed of the network rises or drops steeply, the media file with the code rate corresponding to the instant speed is selected for download according to the pre-stored media configuration file.
The download method according to claim 1, wherein said obtaining the instantaneous speed and average speed of the network comprises:

Get the number of bytes and download time of each data packet in the latest downloaded m data packets, and get the total number of bytes and total download time of the latest n data packets downloaded; n and m are integers greater than or equal to 1, And n is greater than m;

The m instantaneous speeds of the network are calculated using the number of bytes of each data packet in the m data packets and the download time; the total number of bytes of the n data packets and the total download time are used to calculate the total speed State the average speed of the network.
The download method according to claim 2, wherein said calculating the m instant speeds of the network by using the number of bytes of each of the m data packets and the download time comprises:

Calculate the first instant speed of the network by using the byte count and download time of the last downloaded data packet among the m data packets, and use the last two data packets downloaded in the m data packets The total number of bytes and the total download time are calculated to obtain the second instantaneous speed of the network, and so on, until the mth instantaneous speed of the network is obtained;

or,

The number of bytes and the download time of each data packet in the m data packets are respectively calculated to obtain an instant speed of the network, and a total of m instant speeds of the network are obtained.
The download method according to any one of claims 1 to 3, wherein the judging whether the network speed of the network has a steep rise or fall according to the instantaneous speed and the average speed comprises:

If the m instantaneous speeds of the network are all greater than the average speed of the first multiple, it is determined that the network speed of the network has risen sharply;

If the m instantaneous speeds of the network are all less than the second multiple of the average speed, it is determined that the network speed of the network drops sharply.
The download method according to any one of claims 1-3, wherein if the network speed of the network rises sharply, the code rate corresponding to the instant speed is selected according to the pre-stored media configuration file Media files for download, including:

If the network speed of the network rises sharply, determining whether the proportion of the downloaded segments of the media file that have been downloaded is greater than a first preset threshold;

If it is less than the first preset threshold, directly select a media file with a bit rate corresponding to the instant speed according to a pre-stored media configuration file to download;

If it is greater than or equal to the first preset threshold, after the download of the downloading segment of the media file is completed, a media file with a code rate corresponding to the instant speed is selected for download according to a pre-stored media configuration file.
The download method according to any one of claims 1-3, wherein if the network speed of the network rises or drops steeply, the code rate and the real-time speed are selected according to a pre-stored media configuration file. Download the corresponding media files, including:

If the network speed of the network rises or drops steeply, the time interval between the steep rise and the steep drop of the network speed within the preset time period is acquired;

If the number of times the time interval is less than the second preset threshold is less than the preset number of times, selecting a media file with a bit rate corresponding to the instant speed according to a pre-stored media configuration file for downloading;

If the number of times that the time interval is less than the second preset threshold is greater than or equal to the preset number of times, the download of the media file of the current bit rate is maintained when the network speed rises sharply.
A device for downloading media files is characterized by comprising:

The acquisition unit is used to acquire the instantaneous speed and average speed of the network;

A judging unit, configured to judge whether the network speed of the network has a steep rise or fall according to the instantaneous speed and the average speed;

The downloading unit is configured to select a media file with a code rate corresponding to the instant speed according to a pre-stored media configuration file for downloading if the network speed of the network rises or drops steeply.
8. The download device of claim 7, wherein the acquiring unit is further configured to:

Get the number of bytes and download time of each data packet in the latest downloaded m data packets, and get the total number of bytes and total download time of the latest n data packets downloaded; n and m are integers greater than or equal to 1, And n is greater than m;

The m instantaneous speeds of the network are calculated using the number of bytes of each data packet in the m data packets and the download time; the total number of bytes of the n data packets and the total download time are used to calculate the total speed State the average speed of the network.
8. The download device of claim 7, wherein the acquiring unit is further configured to:

Calculate the first instant speed of the network by using the byte count and download time of the last downloaded data packet among the m data packets, and use the last two data packets downloaded in the m data packets The total number of bytes and the total download time are calculated to obtain the second instantaneous speed of the network, and so on, until the mth instantaneous speed of the network is obtained;

or,

The number of bytes and the download time of each data packet in the m data packets are respectively calculated to obtain an instant speed of the network, and a total of m instant speeds of the network are obtained.
8. The download device according to any one of claims 7-9, wherein the judgment unit is further configured to:

If the m instantaneous speeds of the network are all greater than the first multiple of the average speed, it is determined that the network speed of the network has risen sharply;

If the m instantaneous speeds of the network are all less than the second multiple of the average speed, it is determined that the network speed of the network drops sharply.
A terminal, characterized in that the terminal includes a memory and a processor, the memory stores computer-readable instructions that can run on the processor, and the processor executes the computer-readable instructions to implement The following steps:

Get the real-time speed and average speed of the network;

Judging whether the network speed of the network has a steep rise or fall according to the instant speed and the average speed;

If the network speed of the network rises or drops steeply, the media file with the code rate corresponding to the instant speed is selected for download according to the pre-stored media configuration file.
The terminal according to claim 11, wherein said obtaining the instantaneous speed and average speed of the network comprises:

Get the number of bytes and download time of each data packet in the latest downloaded m data packets, and get the total number of bytes and total download time of the latest n data packets downloaded; n and m are integers greater than or equal to 1, And n is greater than m;

The m instantaneous speeds of the network are calculated using the number of bytes of each data packet in the m data packets and the download time; the total number of bytes of the n data packets and the total download time are used to calculate the total speed State the average speed of the network.
The terminal according to claim 12, wherein said calculating the m instant speeds of the network by using the number of bytes of each of the m data packets and the download time comprises:

Calculate the first instant speed of the network by using the byte count and download time of the last downloaded data packet among the m data packets, and use the last two data packets downloaded in the m data packets The total number of bytes and the total download time are calculated to obtain the second instantaneous speed of the network, and so on, until the mth instantaneous speed of the network is obtained;

or,

The number of bytes and the download time of each data packet in the m data packets are respectively calculated to obtain an instant speed of the network, and a total of m instant speeds of the network are obtained.
The terminal according to any one of claims 11-13, wherein the judging whether the network speed of the network has a steep rise or fall according to the instantaneous speed and the average speed comprises:

If the m instantaneous speeds of the network are all greater than the average speed of the first multiple, it is determined that the network speed of the network has risen sharply;

If the m instantaneous speeds of the network are all less than the second multiple of the average speed, it is determined that the network speed of the network drops sharply.
The terminal according to any one of claims 11-13, wherein if the network speed of the network rises sharply, the code rate corresponding to the instant speed is selected according to a pre-stored media configuration file. Download media files, including:

If the network speed of the network rises sharply, determining whether the proportion of the downloaded segments of the media file that have been downloaded is greater than a first preset threshold;

If it is less than the first preset threshold, directly select a media file with a bit rate corresponding to the instant speed according to a pre-stored media configuration file to download;

If it is greater than or equal to the first preset threshold, after the download of the downloading segment of the media file is completed, a media file with a code rate corresponding to the instant speed is selected for download according to a pre-stored media configuration file.
The terminal according to any one of claims 11-13, wherein if the network speed of the network rises sharply or drops sharply, the bit rate selected according to the pre-stored media configuration file corresponds to the instant speed Media files for download, including:

If the network speed of the network rises or drops steeply, the time interval between the steep rise and the steep drop of the network speed within the preset time period is acquired;

If the number of times the time interval is less than the second preset threshold is less than the preset number of times, selecting a media file with a bit rate corresponding to the instant speed according to a pre-stored media configuration file for downloading;

If the number of times that the time interval is less than the second preset threshold is greater than or equal to the preset number of times, the download of the media file of the current bit rate is maintained when the network speed rises sharply.
A computer-readable storage medium that stores computer-readable instructions, wherein the computer-readable instructions are executed by at least one processor to implement the following steps:

Get the real-time speed and average speed of the network;

Judging whether the network speed of the network has a steep rise or fall according to the instant speed and the average speed;

If the network speed of the network rises or drops steeply, the media file with the code rate corresponding to the instant speed is selected for download according to the pre-stored media configuration file.
17. The computer-readable storage medium of claim 17, wherein said acquiring the instantaneous speed and average speed of the network comprises:

Get the number of bytes and download time of each data packet in the latest downloaded m data packets, and get the total number of bytes and total download time of the latest n data packets downloaded; n and m are integers greater than or equal to 1, And n is greater than m;

The m instantaneous speeds of the network are calculated using the number of bytes of each data packet in the m data packets and the download time; the total number of bytes of the n data packets and the total download time are used to calculate the total speed State the average speed of the network.
The computer-readable storage medium of claim 18, wherein the use of the m

The number of bytes of each data packet in the data packet and the download time calculate the m instantaneous speeds of the network including:

Calculate the first instant speed of the network by using the byte count and download time of the last downloaded data packet among the m data packets, and use the last two data packets downloaded in the m data packets The total number of bytes and the total download time are calculated to obtain the second instantaneous speed of the network, and so on, until the mth instantaneous speed of the network is obtained;

or,

The number of bytes and the download time of each data packet in the m data packets are respectively calculated to obtain an instant speed of the network, and a total of m instant speeds of the network are obtained.
22. The computer-readable storage medium according to any one of claims 17-19, wherein the judging whether the network speed of the network has a steep rise or fall according to the instantaneous speed and the average speed comprises:

If the m instantaneous speeds of the network are all greater than the average speed of the first multiple, it is determined that the network speed of the network has risen sharply;

If the m instantaneous speeds of the network are all less than the second multiple of the average speed, it is determined that the network speed of the network drops sharply.