CN102843351B - A kind of processing method of streaming media service, streaming media server and system - Google Patents

Abstract

The invention discloses a streaming media service processing method, a streaming media server and a system, which are used to solve the problem that the code rate of the transmitted media file cannot be dynamically adjusted according to the link bandwidth during the media file transmission process. A communication system, comprising: a user terminal device, configured to initiate a request for obtaining a streaming media file, and receive and play sliced data sent back by a streaming media server; Request the bandwidth of the current link associated with the request, and the bandwidth is represented by a bandwidth value; according to the bandwidth value, obtain the matching streaming media file from multiple streaming media files with different code rates corresponding to the request corresponding slice data, wherein the code rate corresponding to the streaming media file matches the bandwidth value, and returns the slice data to the user terminal, wherein the code rate corresponding to the streaming media file matches the bandwidth value Bandwidth value matches.

Description

Method for processing streaming media services, streaming media server and system

technical field

The present invention relates to the technical field of communication, in particular to a processing method of a streaming media service, a streaming media server and a system.

Background technique

With the continuous development of 3G (3rd-generation, third-generation mobile communication technology) technology and the continuous maturity of network technology, users' demand for streaming media services has also increased significantly. At present, most streaming media services are streaming media services carried by HTTP (HyperTextTransfer Protocol, hypertext transfer protocol).

In the streaming media business based on HTTP bearer, ProgressiveDownload (progressive download) is the mainstream solution, which downloads media files directly through the HTTP protocol, or provides streaming services by playing while downloading. It is to continuously send media files to the playback terminal, and the playback terminal obtains a part of the content of the media file that can be played, and then plays the media. This method makes the waiting time of the user less, but the code rate of the media file required by the user is already determined when the transmission of the media file is started, and dynamic adjustment cannot be performed. The code rate refers to the number of data bits transmitted per unit time. Since the code rate cannot be dynamically adjusted, media files are transmitted at a constant code rate during transmission, whether in high bandwidth or low bandwidth, resulting in The waste of network transmission resources may cause insufficient network transmission resources, which affects user experience.

Contents of the invention

Embodiments of the present invention provide a streaming media service processing method, streaming media server and system, to a certain extent solve the problem that the code rate of the transmitted media file cannot be dynamically adjusted and adjusted according to the bandwidth of the network during the media file transmission process The problem.

Embodiments of the invention adopt the following technical solutions:

An embodiment of the present invention provides a communication system, including:

The user terminal device is used to initiate a request for obtaining a streaming media file, and receive and play sliced data returned by the streaming media server;

The streaming media server is used to obtain the bandwidth of the current link associated with the request of the user terminal for obtaining the streaming media file, and the bandwidth is represented by a bandwidth value; according to the bandwidth value, from different codes corresponding to the request Acquire the corresponding slice data in the matching stream media file from a plurality of stream media files of the same rate, wherein the code rate corresponding to the stream media file matches the bandwidth value; and return the slice to the user terminal data.

Another embodiment of the present invention provides a method for processing streaming media services, including:

Acquiring the bandwidth of the current link associated with the request of the user terminal for obtaining the streaming media file, the bandwidth is represented by a bandwidth value;

According to the bandwidth value, obtain the corresponding slice data in the matching streaming media file from multiple streaming media files corresponding to the request and different bit rates, wherein the bit rate corresponding to the streaming media file is the same as the bit rate of the streaming media file match the above bandwidth value;

returning the sliced data to the user terminal.

The embodiment of the present invention provides a streaming media server, including:

An acquisition unit, configured to acquire the bandwidth of the current link associated with the user terminal's request for acquiring a streaming media file, the bandwidth being represented by a bandwidth value;

A processing unit, configured to obtain, according to the bandwidth value, corresponding slice data in a matching streaming media file from a plurality of streaming media files corresponding to the request and having different code rates, wherein the streaming media file corresponds to The code rate matches the bandwidth value;

A sending unit, configured to return the slice data to the user terminal.

Embodiments of the present invention provide a streaming media service processing method, streaming media server and system, capable of obtaining the link bandwidth value of the user terminal, and according to the bandwidth value, multiple The corresponding slice data in the matching streaming media file is obtained from a streaming media file, and returned to the user terminal, which realizes the dynamic code rate adjustment of the streaming media file during the transmission process, improves the utilization rate of network transmission, and improves the user experience. .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the communication system block diagram of the embodiment of the invention;

FIG. 2 is a schematic flow diagram of a method for processing a streaming media service according to an embodiment of the invention;

FIG. 3 is a schematic flow diagram of another method for processing a streaming media service according to an embodiment of the invention;

Fig. 4 is a schematic structural diagram of a streaming media server according to an embodiment of the invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The various technologies described herein can be used in various wireless communication systems, such as current 2G, 3G communication systems and next-generation communication systems, such as Global System for Mobile Communications (GSM, Global System for Mobile communications), Code Division Multiple Access (CDMA, CodeDivisionMultipleAccess) system, Time Division Multiple Access (TDMA, TimeDivisionMultipleAccess) system, Wideband Code Division Multiple Access (WCDMA, WidebandCodeDivisionMultipleAccessWireless), Frequency Division Multiple Access (FDMA, FrequencyDivisionMultipleAddressing) system, Orthogonal Frequency Division Multiple Access (OFDMA, OrthogonalFrequency-DivisionMultipleAccess) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS, General Packet Radio Service) system, Long Term Evolution (LTE, Long Term Evolution) system, and other such communication systems.

The user terminal may be a wireless terminal or a wired terminal. The wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (for example, RAN, RadioAccessNetwork), and the wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal , for example, may be portable, pocket, handheld, computer built-in, or vehicle-mounted mobile devices that exchange voice and/or data with the radio access network. For example, Personal Communication Service (PCS, Personal Communication Service) phone, Personal Digital Assistant (PDA, Personal Digital Assistant) and other devices. A wireless terminal may also be called a system, a remote terminal (RemoteTerminal), an access terminal (AccessTerminal), a user terminal (UserTerminal), a user agent (UserAgent), a user device (UserDevice), or a user equipment (UserEquipment).

Embodiment one

An embodiment of the present invention provides a communication system, as shown in FIG. 1 , including: a user terminal device 11 and a streaming media server 12 .

The user terminal device 11 is configured to initiate a request for obtaining a streaming media file, and receive and play sliced data returned by the streaming media server.

It should be noted that the streaming media in this embodiment of the present invention includes but is not limited to: video files or video streams or audio files or audio streams.

When the user terminal needs to play an online streaming media file through the network, it first initiates a request for obtaining the streaming media file to the streaming media server, and requests the streaming media server to return the requested streaming media file.

In the embodiment of the present invention, a large number of streaming media files with different code rates are stored in the streaming media server, and each streaming media file has one or more slice data, and the slice data is equal in length continuous data. When the streaming media server obtains the streaming media file request of the user terminal, it periodically returns the selected slice data to the user terminal. The user terminal is also used to receive and play sliced data returned by the streaming media server.

The streaming media server 12 is used to obtain the bandwidth of the current link associated with the request of the user terminal to obtain the streaming media file, and the bandwidth is represented by a bandwidth value; Acquire the corresponding slice data in the matching streaming media file from a plurality of streaming media files of the code rate, wherein, the code rate corresponding to the streaming media file matches the bandwidth value; and return the described slice data.

The so-called link is a section of physical line from one node to an adjacent node. In the embodiment of the present invention, the user terminal sends a request for obtaining the streaming media file to the streaming media server, so that a TCP (Transmission Control Protocol, Transmission Control Protocol) connection is established between the user terminal and the streaming media server, that is, the user terminal and the streaming media server are established. Links associated with requests for streaming media files between servers.

Bandwidth refers to the "highest data rate" that network transmission data can pass from one point to another in a unit of time, that is, how many bits per second (bit/s) can be transmitted. Therefore, the greater the bandwidth, the greater the amount of data that can flow from one end to the other within a given period of time, ie, the faster the data transfer rate. Network bandwidth affects the rate at which data or files are transferred. However, due to changes in the network environment, the available bandwidth of the user terminal changes. Therefore, before streaming media file transmission, first detect and obtain the bandwidth of the current link associated with the streaming media file request, obtain the current bandwidth value of the user, and Slicing data matching the bandwidth value is sent according to the bandwidth value, so as to improve the utilization rate of network bandwidth, ensure the fluency of playing streaming media files, and further improve user experience.

In the communication system provided by the present invention, in an implementation manner, the streaming media server 12 is specifically configured to: acquire the bandwidth of the current link associated with the user terminal's request for acquiring a streaming media file, and the bandwidth is represented by a bandwidth value ; and according to the bandwidth value and the streaming media file identifier carried in the request, search for matching streaming media slice attribute information from the description file, wherein the streaming media slice attribute information corresponds to the streaming media file identifier , and the code rate information associated with the streaming media slice attribute information matches the bandwidth value; and according to the streaming media slice attribute information, obtain and return corresponding slice data to the user terminal, the streaming media slice The attribute information includes the start time, end time and storage address of each slice data included in the streaming media file.

Further, the communication system further includes a bandwidth detection device 13, configured to detect the bandwidth of the current link associated with the request of the user terminal device for obtaining the streaming media file, and the bandwidth is represented by a first bandwidth value;

At this time, the streaming media server 12 is specifically configured to: search for matching streaming media slice attribute information from the description file according to the first bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice The attribute information corresponds to the identifier of the streaming media file, and the code rate information associated with the attribute information of the streaming media slice matches the first bandwidth value, and the attribute information of the streaming media slice includes the The start time, end time and storage address of each slice data; and the storage address of the first slice data sorted in ascending order according to the start time, and obtain and return the corresponding first slice data to the user terminal.

In addition, the bandwidth detection device 13 is also configured to periodically detect the request associated with the first threshold time interval after receiving the request for obtaining the streaming media file sent by the user terminal and returning the first slice data. The bandwidth of the current link, or periodically request the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, the bandwidth is represented by a second bandwidth value;

At this time, the streaming media server 12 is specifically configured to: search for matching streaming media slice attribute information from the description file according to the second bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice The attribute information corresponds to the identifier of the streaming media file, and the code rate information associated with the attribute information of the streaming media slice matches the second bandwidth value, and the attribute information of the streaming media slice includes the The start time, end time and storage address of each slice data, as well as the storage address of the slice data whose start time is the same as or continuous with the end time of the first slice data or the last slice data, are acquired and sent to the user The terminal returns the corresponding next slice data.

The next slice data here may be the second slice data, the third slice data, . . . the Nth slice data and so on.

It should be noted that when the bandwidth detection device 13 periodically detects the bandwidth of the current link associated with the request of the user terminal equipment to obtain the streaming media file, the bandwidth value may be the same at different moments, so the The stream media server 12 returns to the user terminal the corresponding first slice data and the second slice data, the third slice data, ... the code rate of the Nth slice data may be the same, but the start of the second slice data The time must be the same as or continuous with the end time of the first slice data, the start time of the third slice data must be the same or continuous with the end time of the second slice data, ... the beginning of the Nth slice data The time must be the same as or continuous with the end time of the N-1th slice data.

Further, the communication system further includes: a transcoding device 14,

For duplicating streaming media files, generating a first copy of the streaming media file and a second copy of the media file;

Transcoding the first copy of the streaming media file and the copy of the second streaming media file respectively to generate a copy of the streaming media file with a first code rate and a copy of the streaming media file with a second code rate;

Slicing the copy of the streaming media file with the first code rate and the copy of the streaming media file with the second code rate to generate several slice data of equal duration.

The transcoding device 14 performs a transcoding operation in advance to convert video sources (video files or video streams) into video files with different code rates. These video files are internally sliced, and the slices are aligned by time, that is, different code rates The start and end time of each slice in the video file of the same rate are the same. The transcoding device 14 simultaneously generates a description file, and records each code rate and slice information of the generated file.

It can be seen that the embodiment of the present invention provides a communication system, which can detect the link bandwidth of the user terminal, and transmit the sliced data after transcoding and slicing according to the link bandwidth, and the bandwidth can be checked each time before slicing data. The selection of detection and slice data realizes the dynamic code rate adjustment of streaming media services, and improves the performance of user terminals and streaming media servers. Specifically,

1) As far as the user terminal is concerned, the code rate is dynamically adjusted according to the bandwidth. In the case of low bandwidth, the smoothness of media files can be guaranteed. When the bandwidth is sufficient, the quality of streaming media (such as audio or video) can be improved, thereby improving the user experience. In addition, compared with the prior art, the user terminal needs to initiate a new HTTP request every time a segment is played, but in the embodiment of the present invention, the user terminal only needs to initiate a request for obtaining the streaming media file once (i.e. The whole process only needs one HTTP request), and the interaction between the user terminal and the streaming media server is greatly reduced. In addition, compared with the traditional technology, the user terminal in the embodiment of the present invention does not need to parse the description file, so the user terminal in the embodiment of the present invention does not need to be customized and has stronger adaptability.

2) As far as the streaming media server is concerned, the streaming media server adjusts the code rate of the streaming media file, so that the streaming media server has the ability to allocate network bandwidth, especially in the case of high concurrency, this feature enables more efficient use of network bandwidth.

Embodiment two

The embodiment of the present invention provides a processing method of streaming media services, which is based on the processing method of streaming media services in the mode of playing while downloading. The method of playing while downloading is to continuously send streaming media files to the user terminal, and the user terminal performs media playback after obtaining a part of the content of the streaming media file that can be played. In the prior art, after the user terminal sends a streaming media file request message, the server sends the streaming media file requested by the user terminal to the user terminal. Once the streaming media file starts to be transmitted, whether it is under high link bandwidth or low link bandwidth , streaming media files are transmitted at a constant bit rate, which cannot be adjusted, resulting in a waste of network transmission resources, or a shortage of network transmission resources.

In order to solve the problem that the bit rate of the transmitted streaming media file cannot be dynamically adjusted and adjusted according to the bandwidth of the network during the streaming media file transmission process, as shown in Figure 2, the embodiment of the present invention provides a streaming media service Processing method, the execution body of this method can be a streaming media server, and this method includes:

S101. Obtain the bandwidth of the current link associated with the user terminal's request for obtaining a streaming media file, where the bandwidth is represented by a bandwidth value.

In the embodiment of the present invention, when playing an online streaming media file through the network, the user terminal initiates a request to the streaming media server for acquiring the streaming media file. After the streaming media server receives the request for obtaining the streaming media file initiated by the user terminal, first, it establishes a TCP connection with the user terminal, that is, establishes the connection between the user terminal and the streaming media server associated with the request for obtaining the streaming media file. link.

Then, the streaming media server obtains the bandwidth of the current link associated with the user terminal's request for obtaining the streaming media file, and the bandwidth is represented by a bandwidth value.

Bandwidth refers to the "highest data rate" that network transmission data can pass from one point to another in a unit of time, that is, how many bits per second (bit/s) can be transmitted. Therefore, the greater the bandwidth, the greater the amount of data that can flow from one end to the other within a given period of time, ie, the faster the data transfer rate. Network bandwidth affects the rate at which data or files are transferred.

S102. According to the bandwidth value, obtain the corresponding slice data in the matching streaming media file from multiple streaming media files corresponding to the request and having different code rates, wherein the code rate corresponding to the streaming media file Match the bandwidth value described.

The slice data is the data obtained after the transcoding device processes the streaming media file, and the specific processing process includes:

First, copy the streaming media file to generate a first streaming media file copy and a second streaming media file copy;

Secondly, the first stream media file copy and the second stream media file copy are respectively transcoded to generate a stream media file copy with a first code rate and a stream media file copy with a second code rate; wherein the code rate is Refers to the number of data bits transmitted per unit time.

Finally, slice the stream media file copy with the first code rate and the stream media file copy with the second code rate to generate several sub-slice data of equal duration. During the slicing process, the slicing is performed according to time, for example, slicing can be performed every ten seconds. This ensures that the duration of each slice of data is the same.

Preferably, in order to enable the server to more accurately select slice data suitable for the bandwidth, the server can also:

Duplicating the streaming media file to generate a third streaming media file copy and a fourth streaming media file copy, and then transcoding the third streaming media file copy and the fourth streaming media file copy to generate a stream with a third code rate A copy of the media file and a copy of the streaming media file with a fourth bit rate;

Then slice the copy of the streaming media file with the third code rate and the copy of the streaming media file with the fourth code rate to generate several slice data of equal duration.

It can be seen that the generated copy of the streaming media file with the first bit rate, the copy of the streaming media file with the second bit rate, the copy of the streaming media file with the third bit rate and the copy of the streaming media file with the fourth bit rate have different Therefore, when selecting slice data suitable for the bandwidth according to the server, there are more bit rate options.

The slice data can be stored in the streaming media server or in the data storage device, and can be obtained directly when the streaming media server needs it.

Preferably, in order to quickly match the required slice data for the user terminal, the description file is generated after the transcoding device completes the transcoding. The description file is used to describe the attributes of each slice data, and the streaming media slice attribute information includes: the start time, end time and storage address of the slice data. Specifically, the description file has two description methods:

In the first way, the description file contains the same stream media file identifier, different code rate information, and different stream media file slice attribute information under different code rates (that is, each stream media file included in different code rates) The relationship between the start time, the end time and the storage address) of slice data, as an example, a video file is used as an example for illustration, and the identifier of the streaming media file is the name of the video file, using "Movie 1" Indicates, as shown in Table 1:

Table 1

The second way involves a complete description file. The description file includes different stream media file identifiers, different code rate information, and different stream media file slice attribute information under different code rates (that is, different stream media file slice attribute information under different code rates) The relationship between the start time, end time and storage address of each slice data included in the streaming media file, for example, a video file is used as an example for illustration, and the identifier of the streaming media file is the name of the video file , using "Movie 1", "Movie 2", and "Movie 3" to represent three different video files, as shown in Table 2:

Table 2

Wherein, the streaming media file identifier is used to match the streaming media file identifier carried in the user terminal's request for obtaining the streaming media file, and the streaming media file identifier is not limited to the name of the streaming media file, but may also be a stream The code or identifier of the media file. Exemplarily, the stream media file identifier carried in the user terminal's request for acquiring the stream media file may be a Uniform Resource Locator (URL, UniformResourceLocator). URL is a concise representation of the location and access method of resources that can be obtained from the Internet. As long as the resource can be located, the system can perform various operations on the resource, such as access, update, replace and search for its attributes. A URL is equivalent to a network-wide extension of a file name, so a URL is a pointer to any accessible object on a machine connected to the Internet.

In this embodiment of the present invention, the streaming media server may search for matching streaming media slice attribute information from the description file according to the bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information is the same as The streaming media file identifier corresponds, and the code rate information associated with the streaming media slice attribute information matches the bandwidth value, and according to the streaming media slice attribute information, the corresponding slice data is obtained, and the streaming media The slice attribute information includes the start time, end time and storage address of each slice data included in the streaming media file.

Since the bandwidth value refers to the number of bits (bit/s) that can be transmitted per unit time, and the code rate also refers to the number of data bits (bit/s) transmitted per unit time, you can choose the code rate that is closest to the bandwidth value but not greater than is the code rate of the slice data to be sent, the code rate of the streaming media file is directly proportional to the quality, the higher the code rate, the higher the quality of the media file, however, when the network data is transmitted, the more demanding the network is High, so, according to the bandwidth value, the implementation of the present invention can select the code rate closest to the bandwidth value but not greater than the code rate of the slice data to be sent, which can realize the transmission of low code rate when the bandwidth is low The sliced data ensures the smoothness of the media files. When the bandwidth is high, the sliced media files with a high bit rate are transmitted, which improves the utilization of network resources.

S103. Return the slice data to the user terminal.

The streaming media server can select the slice data currently required by the user terminal according to the start time, end time and storage address of each slice data included in the streaming media file in the stream media slice attribute information, and return the slice data to the user terminal, so that the user terminal can play.

In the embodiment of the present invention, searching for the matching streaming media slice attribute information from the description file, and returning the slice data according to the streaming media slice attribute information are all completed by the streaming media server, and the user terminal only needs to send the acquisition stream once. The request of the media file is enough, which can reduce the interaction between the user and the streaming media server. Furthermore, the user terminal only needs to play the segmented data returned by the streaming media server, and does not need to perform an additional search or parsing process. Therefore, the user terminal does not need to be a customized playback device, and thus the adaptability is stronger.

It should be noted that since the bandwidth of the current link is variable and unstable, the code rate of the slice data returned each time may be different, but the time of the slice data returned by the streaming server to the user terminal must be continuous , so as to ensure that the streaming media files played by the user terminal are continuous and uninterrupted.

As shown in Figure 3, the embodiment of the present invention also provides a method for processing a streaming media service, including:

S201. The user terminal sends a request for acquiring a streaming media file to the streaming media server.

S202. The streaming media server requests the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, where the bandwidth is represented by a first bandwidth value.

It should be noted that the bandwidth detection device can be a separate device connected to the streaming media server for detecting the bandwidth of the current link associated with the request of the user terminal device to obtain the streaming media file, or it can be set on the streaming media server The detecting unit in the method is configured to acquire the bandwidth of the current link associated with the request of the user terminal equipment for acquiring the streaming media file.

S203. The bandwidth detection device returns the first bandwidth value to the streaming media server.

S204. The streaming media server searches for matching streaming media slice attribute information from the description file according to the first bandwidth value and the streaming media file identifier carried in the request.

Wherein, the streaming media slice attribute information corresponds to the streaming media file identifier, and the code rate information associated with the streaming media slice attribute information matches the first bandwidth value, and the streaming media slice attribute information includes The start time, end time and storage address of each slice data included in the streaming media file.

S205. The streaming media server sorts the storage addresses of the first slice data in ascending order according to the start time, acquires and sends the corresponding first slice data to the user terminal.

According to the start time of the slice data, the streaming media server selects the storage address of the slice data of the first slice data in ascending order of the start time, and obtains the corresponding first slice data according to the storage address of the slice data, and stores the first slice data One piece of data is returned to the user terminal.

S206. The user terminal plays the first slice data.

It should be understood that, after step S206, a piece of slice data is sent to the user terminal at intervals. Repeat steps 207-211 at regular intervals until the streaming media file is played completely.

In the embodiment of the present invention, after the streaming media server sends the first slice data corresponding to the user terminal, it also includes:

S207. The streaming media server periodically detects the bandwidth of the current link associated with the request at a first threshold time interval, or periodically requests the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, the The bandwidth is represented by a second bandwidth value. It should be noted that the first threshold time interval here can be flexibly set according to actual application scenarios, and can also be changed during use.

S208. The bandwidth detection device returns the second bandwidth value for bandwidth to the streaming media server.

S209. The streaming media server searches for matching streaming media slice attribute information from the description file according to the second bandwidth value and the streaming media file identifier carried in the request.

Wherein, the streaming media slice attribute information corresponds to the streaming media file identifier, and the code rate information associated with the streaming media slice attribute information matches the second bandwidth value, and the streaming media slice attribute information includes The start time, end time and storage address of each slice data included in the streaming media file.

S210. The streaming media server obtains the corresponding next slice data and returns the corresponding next slice data to the user terminal according to the storage address of the slice data whose start time is the same as the end time of the first slice data or the previous slice data or is continuous. A slice of data (for example, the second slice of data, the third slice of data ... the Nth slice of data).

S211. The user terminal plays the next data slice.

It should be noted that, for example, the code rates of the first slice data and the second slice data match the link bandwidth, so the code rates of the first slice data and the second slice data can be the same, or can be Not the same, however, the start time of the second slice data is the same as or continuous with the end time of the first slice data.

After playing the second slice data, the user terminal will continue to periodically detect the current link bandwidth of the request association at the first threshold time interval, or periodically request the bandwidth detection device to detect and provide the request association The bandwidth of the current link, and according to the bandwidth value and the streaming media file identifier carried in the request, search for the matching streaming media slice attribute information from the description file, and obtain and send the matching streaming media slice attribute information to the The user terminal returns the corresponding third and fourth slice data, etc., until the transmission of a complete streaming media file ends. It should be noted that all the sliced data returned are stream media files with the same identifier, and the user terminal only needs to send a request for obtaining the stream media file to the server once, thus reducing the interaction between the user terminal and the server. Further, after receiving the slice data sent by the server, the user terminal plays it. From the user's point of view, it is a continuous and complete streaming media file (such as a video file), and it will not be the code rate of the selected slice data. Differently affect the user's viewing effect. For the streaming media server, the selection and transmission of sliced media files can be performed according to the bandwidth value, which can ensure the normal transmission of the media files, and then the user terminal can play smoothly.

It should be noted that, in the embodiment of the present invention, before step S201, S2011 is also included.

S2011. The transcoding device transcodes the streaming media file to obtain one or more slice data in the streaming media file with different code rates, and generates a corresponding description file.

There may be one or more description files in the embodiment of the present invention. It should be understood that if it is one description file, the association relationship described therein may refer to the aforementioned Table 2; if there are multiple description files, relative to different code rates Each streaming media file corresponds to a description file, and the association relationship described therein can refer to the aforementioned Table 1.

Specifically, the transcoding device first copies the streaming media file to generate a first copy of the streaming media file and a second copy of the media file;

Then, the first stream media file copy and the second stream media file copy are respectively transcoded to generate a stream media file copy with a first code rate and a stream media file copy with a second code rate;

Finally, slice the stream media file copy with the first code rate and the stream media file copy with the second code rate to generate several slice data of equal duration.

S2012. The transcoding device sends the generated slice data and description file to the streaming media server.

The stream media server saves the received slice data and description file, and when the stream media server receives a request from the user terminal to obtain the stream media file, the stream media server can search and obtain the slice data according to the description file.

However, in the embodiment of the present invention, steps S2011 and S2012 are the preconditions of steps S201-S211. Once the slice data is generated, it can be obtained directly by the streaming media server, and it is not necessary to perform transcoding every time the user terminal sends a streaming media request. process.

It can be seen that the embodiment of the present invention provides a dynamic code rate adjustment method, which can detect the link bandwidth of the user terminal, and transmit the sliced data after transcoding and slicing according to the link bandwidth, and each time before slicing the data Both can perform bandwidth detection and slice data selection, realize dynamic code rate adjustment of streaming media services, and improve user terminals, streaming media servers, etc. Specifically,

1) As far as the user terminal is concerned, the code rate is dynamically adjusted according to the bandwidth. In the case of low bandwidth, the smoothness of media files can be guaranteed. When the bandwidth is sufficient, the quality of streaming media (such as audio or video) can be improved, thereby improving the user experience. In addition, compared with the prior art, the user terminal needs to initiate a new HTTP request every time a segment is played, but in the embodiment of the present invention, the user terminal only needs to initiate a request for obtaining the streaming media file once (i.e. The whole process only needs one HTTP request), and the interaction between the user terminal and the streaming media server is greatly reduced. In addition, compared with the traditional technology, the user terminal in the embodiment of the present invention does not need to parse the description file, so the user terminal in the embodiment of the present invention does not need to be customized and has stronger adaptability.

2) As far as the streaming media server is concerned, the streaming media server adjusts the code rate of the streaming media file, so that the streaming media server has the ability to allocate network bandwidth, especially in the case of high concurrency, this feature enables more efficient use of network bandwidth.

Embodiment three

As shown in FIG. 4 , an embodiment of the present invention provides a streaming media server 400, including: an acquisition unit 401, a processing unit 402, and a sending unit 403, wherein,

The obtaining unit 401 is configured to obtain the bandwidth of the current link associated with the user terminal's request for obtaining the streaming media file, and the bandwidth is represented by a bandwidth value;

The processing unit 402 is configured to obtain, according to the bandwidth value, corresponding slice data in a matching streaming media file from multiple streaming media files corresponding to the request and having different code rates, wherein the streaming media file The corresponding code rate matches the bandwidth value;

A sending unit 403, configured to return the slice data to the user terminal.

In the embodiment of the present invention, in an implementation manner, the processing unit 402 is specifically configured to:

Searching for matching streaming media slice attribute information from the description file according to the bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information corresponds to the streaming media file identifier, and The code rate information associated with the streaming media slice attribute information matches the bandwidth value, and according to the streaming media slice attribute information, corresponding slice data is obtained, and the streaming media slice attribute information includes that the streaming media file includes The start time, end time and storage address of each slice data of .

It should be understood that a complete streaming media file includes one or more slices. From the perspective of the time axis, slices can be divided into header slices, middle slices and tail slices. It should be understood that these slices can be slices with the same code rate , can also be slices with different bit rates, depending on the bandwidth in the actual application scenario;

For header slices, the obtaining unit 401 is specifically configured to: after receiving a request for obtaining a streaming media file sent by a user terminal, detect the current link bandwidth associated with the request, or request the bandwidth detection device to detect and provide the The bandwidth of the current link associated with the request is represented by the first bandwidth value.

The processing unit 402 is specifically configured to: search for matching streaming media slice attribute information from the description file according to the first bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information Corresponding to the streaming media file identifier, and the code rate information associated with the streaming media slice attribute information matches the first bandwidth value, the streaming media slice attribute information includes each The start time, end time and storage address of the slice data; sort the storage address of the first slice data in ascending order according to the start time, and obtain the corresponding first slice data.

The sending unit 403 is specifically configured to: return the first slice data to the user terminal.

For the middle slice or tail slice, in the embodiment of the present invention, the acquiring unit 401 is specifically configured to: when receiving a request for acquiring a streaming media file sent by the user terminal and returning the first slice data, Periodically detect the bandwidth of the current link associated with the request at a first threshold time interval, or periodically request the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, and the bandwidth uses the second bandwidth Value representation.

The processing unit 402 is specifically configured to: search for matching streaming media slice attribute information from the description file according to the second bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information Corresponding to the streaming media file identifier, and the code rate information associated with the streaming media slice attribute information matches the second bandwidth value, the streaming media slice attribute information includes each The start time, end time and storage address of the slice data; and, according to the storage address of the slice data whose start time is the same as the end time of the first slice data or the last slice data or continuous, obtain the corresponding next Slice data (eg second slice data, third slice data... Nth slice data).

The sending unit 403 is specifically configured to: return the next slice data (for example, the second slice data, the third slice data...the Nth slice data) to the user terminal.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

The embodiment of the present invention provides a streaming media server, which can obtain the link bandwidth value of the user terminal, and send sliced data after transcoding and slicing according to the bandwidth value, and can perform bandwidth detection and slicing before each slicing data The selection of data realizes the dynamic code rate adjustment of streaming media files during transmission, improves the utilization rate of network transmission, and enhances user experience.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (7)

1. A communication system, characterized in that, comprising: A user terminal device, configured to initiate a request to a streaming media server for obtaining a streaming media file, and receive and play sliced data returned by the streaming media server; The bandwidth detection device is used to detect the bandwidth of the current link associated with the request of the user terminal equipment to obtain the streaming media file, and the bandwidth is represented by a first bandwidth value; The streaming media server is specifically configured to: search for matching streaming media slice attribute information from the description file according to the first bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information Corresponding to the streaming media file identifier, and the code rate information associated with the streaming media slice attribute information matches the first bandwidth value, the streaming media slice attribute information includes each The start time, end time and storage address of the slice data; and the storage address of the first slice data in ascending order according to the start time, acquire and return the corresponding first slice data to the user terminal. 2. The system of claim 1, wherein: The bandwidth detection device is further configured to periodically detect the bandwidth associated with the request at a first threshold time interval after receiving a request for obtaining a streaming media file sent by a user terminal and returning the first slice data. The bandwidth of the current link, or periodically requesting the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, where the bandwidth is represented by a second bandwidth value; The streaming media server is specifically configured to: search for matching streaming media slice attribute information from the description file according to the second bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information Corresponding to the streaming media file identifier, and the code rate information associated with the streaming media slice attribute information matches the second bandwidth value, the streaming media slice attribute information includes each The start time, end time and storage address of the slice data, and the storage address of the slice data whose start time is the same as or continuous with the end time of the first slice data or the last slice data, acquire and return to the user terminal The corresponding next slice data. 3. The system according to claim 1, further comprising: A transcoding device is used to copy the streaming media file to generate a first copy of the streaming media file and a second copy of the streaming media file; Transcoding the first copy of the streaming media file and the copy of the second streaming media file respectively to generate a copy of the streaming media file with a first code rate and a copy of the streaming media file with a second code rate; Slicing the copy of the streaming media file with the first code rate and the copy of the streaming media file with the second code rate to generate several slice data of equal duration. 4. A processing method for a streaming media service, characterized in that it is applied to a streaming media server, comprising: Acquiring the bandwidth of the current link associated with the request of the user terminal for obtaining the streaming media file, the bandwidth is represented by a bandwidth value; According to the bandwidth value, obtain the corresponding slice data in the matching streaming media file from multiple streaming media files corresponding to the request and different bit rates, wherein the bit rate corresponding to the streaming media file is the same as the bit rate of the streaming media file match the above bandwidth value; returning the sliced data to the user terminal; Wherein, the acquisition and the bandwidth of the current link associated with the request of the user terminal to acquire the streaming media file, the bandwidth is represented by a bandwidth value, including: After receiving the request from the user terminal to obtain the streaming media file, detect the bandwidth of the current link associated with the request, or request the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, and the bandwidth uses the first A bandwidth value representation; Wherein, according to the bandwidth value, obtaining the corresponding slice data in the matching streaming media file from multiple streaming media files corresponding to the request and with different code rates includes: Search for matching streaming media slice attribute information from the description file according to the first bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information corresponds to the streaming media file identifier , and the code rate information associated with the streaming media slice attribute information matches the first bandwidth value, and the streaming media slice attribute information includes the start time and end time of each slice data included in the streaming media file and storage address; Sort the storage address of the first slice data in ascending order according to the start time, and obtain the corresponding first slice data; Wherein, the returning the slice data to the user terminal includes: returning the first slice data to the user terminal. 5. The method of claim 4, wherein, The acquisition is related to the bandwidth of the current link associated with the user terminal's request for obtaining the streaming media file, and the bandwidth is represented by a bandwidth value, including: After receiving the request from the user terminal to obtain the streaming media file and returning the first slice data, periodically detect the current link bandwidth associated with the request at the first threshold time interval, or periodically The request bandwidth detection device detects and provides the bandwidth of the current link associated with the request, and the bandwidth is represented by a second bandwidth value; Wherein, according to the bandwidth value and the streaming media file identification carried in the request, search for matching streaming media slice attribute information from the description file, wherein the streaming media slice attribute information is consistent with the streaming media file identification Correspondingly, and the code rate information associated with the streaming media slice attribute information matches the bandwidth value, and according to the streaming media slice attribute information, obtain the corresponding slice data, and the streaming media slice attribute information includes the The start time, end time and storage address of each slice data included in the streaming media file, including: Search for matching streaming media slice attribute information from the description file according to the second bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information corresponds to the streaming media file identifier , and the code rate information associated with the streaming media slice attribute information matches the second bandwidth value, the streaming media slice attribute information includes the start time and end time of each slice data included in the streaming media file and storage address; Acquiring the corresponding next slice data according to the storage address of the slice data whose starting time is the same as or continuous with the end time of the first slice data or the last slice data; Wherein, the returning the slice data to the user terminal includes: returning the next slice data to the user terminal. 6. A streaming media server, characterized in that, comprising: An acquisition unit, configured to acquire the bandwidth of the current link associated with the user terminal's request for acquiring a streaming media file, the bandwidth being represented by a bandwidth value; A processing unit, configured to obtain, according to the bandwidth value, corresponding slice data in a matching streaming media file from a plurality of streaming media files corresponding to the request and having different code rates, wherein the streaming media file corresponds to The code rate matches the bandwidth value; a sending unit, configured to return the sliced data to the user terminal; Wherein, the obtaining unit obtains the bandwidth of the current link associated with the user terminal's request for obtaining the streaming media file, and is specifically used for: after receiving the request for obtaining the streaming media file sent by the user terminal, detecting the association of the request The bandwidth of the current link, or request the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, the bandwidth is represented by a first bandwidth value; According to the bandwidth value, the processing unit obtains the corresponding slice data in the matching streaming media file from multiple streaming media files corresponding to the request and with different code rates, specifically for: according to the first The bandwidth value and the streaming media file identifier carried in the request, and search for matching streaming media slice attribute information from the description file, wherein the streaming media slice attribute information corresponds to the streaming media file identifier, and the stream The code rate information associated with the media slice attribute information matches the first bandwidth value, and the stream media slice attribute information includes the start time, end time and storage address of each slice data included in the stream media file; according to Sort the storage address of the first slice data in ascending order by the start time, and obtain the corresponding first slice data; The sending unit returns the slice data to the user terminal, and is specifically configured to: return the first slice data to the user terminal. 7. streaming media server according to claim 6, is characterized in that, The obtaining unit is specifically configured to: when receiving a request for obtaining a streaming media file sent by a user terminal and returning the first slice data, periodically detect the current file associated with the request at a first threshold time interval. link bandwidth, or periodically request the bandwidth detection device to detect and provide the bandwidth of the current link associated with the request, where the bandwidth is represented by a second bandwidth value; The processing unit is specifically configured to: search for matching streaming media slice attribute information from the description file according to the second bandwidth value and the streaming media file identifier carried in the request, wherein the streaming media slice attribute information is the same as The streaming media file identifier corresponds, and the code rate information associated with the streaming media slice attribute information matches the second bandwidth value, and the streaming media slice attribute information includes each slice included in the streaming media file The start time, end time and storage address of the data; and, according to the storage address of the slice data whose start time is the same as the end time of the first slice data or the last slice data or continuous, obtain the corresponding next slice data; The sending unit is specifically configured to: return the next slice data to the user terminal.