CN110300339B - Live multimedia playback method, device and system - Google Patents
Live multimedia playback method, device and system Download PDFInfo
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- CN110300339B CN110300339B CN201810239722.0A CN201810239722A CN110300339B CN 110300339 B CN110300339 B CN 110300339B CN 201810239722 A CN201810239722 A CN 201810239722A CN 110300339 B CN110300339 B CN 110300339B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
Abstract
The invention discloses a live multimedia playback method, a device and a system, wherein the method comprises the following steps: receiving a multimedia playback request sent by a client, and determining multimedia data index information corresponding to a multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information; determining a slice file identifier corresponding to a playback starting time point; taking a slice file corresponding to a slice file identifier corresponding to a playback start time point as a start slice file, and acquiring a slice file sequence taking the start slice file as a first slice file; and sending the sequence of slice files to the client. The invention can reduce the processing pressure of the multimedia data storage subsystem and greatly reduce the resource consumption.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a live multimedia playback method, a live multimedia playback device and a live multimedia playback system.
Background
With the development of multimedia data services and internet technologies, live and on-demand multimedia transmission modes are gradually and widely applied, and a more common multimedia transmission protocol is http-flv. In the live broadcast service, users receive real-time multimedia data, and the live broadcast server generally does not store multimedia contents. The multimedia content in the on-demand service is fixed, the user can select which multimedia to order, and the multimedia content for the on-demand service is stored at the server side.
The live broadcast streaming media review is different from live broadcast and on-demand broadcast. When the live streaming media looks back to the streaming media content before the current time, new data at the current time is generated continuously. When the time point of the review is zero relative to the current time, the live streaming review and the live broadcast are synchronized.
The existing multimedia playback function is generally implemented in two ways:
firstly, a central storage edge distribution mode is adopted. After the edge server receives the replay request of the client, the edge server acquires the multimedia content corresponding to the replay request from the central server, and sends the multimedia content to the client according to the replay starting time point in the replay request. Because the replay time points of each user are different, the edge server does not store the multimedia content, but pulls the multimedia content from the central server aiming at each user, the data transmission bandwidth from the edge server to the central server is the same as the data transmission bandwidth from the client to the edge server, the processing pressure of the central server is higher, and the resource internal consumption is higher.
Secondly, with the edge storage and distribution method, multiple edge servers are required to store the same full amount of data. In the whole network, a streaming media server for playback needs to be specially deployed, the streaming media server for playback needs to store the same playback multimedia data, so that the server overhead is too large, and when a service suddenly increases, hardware cannot freely and transversely expand capacity, and a newly added server needs to reserve enough time to store the playback multimedia data.
Of the two methods, the first method has a large processing pressure on the central server and high resource internal consumption, and the second method essentially piles machines at the edge of the network, which consumes a large amount of operation cost and has poor expansibility.
Disclosure of Invention
In order to solve the technical problem, the invention provides a live multimedia playback method, a live multimedia playback device and a live multimedia playback system, so as to reduce the internal consumption of the system and reduce the cost.
The invention provides a live multimedia playback method, which is applied to an edge server and comprises the following steps:
receiving a multimedia playback request sent by a client, wherein the multimedia playback request comprises a multimedia identifier and a playback starting time point;
determining multimedia data index information corresponding to the multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
determining a slice file identifier corresponding to the playback starting time point;
taking a slice file corresponding to the slice file identifier corresponding to the playback start time point as a start slice file, and acquiring a slice file sequence taking the start slice file as a first slice file;
and sending the sequence of slice files to the client.
The live multimedia playback method also has the following characteristics:
the method further comprises the following steps:
synchronizing multimedia data index information within a first preset time period from a current time from a multimedia data storage side at a first preset frequency for one of the following periods:
when the connection between the edge server and the client is not disconnected;
and the time interval between the edge server and the client is after the time point of disconnection of the edge server and the client, and the time interval between the time point of disconnection of the edge server and the time point of disconnection of the edge server is before the time point of second preset time.
The live multimedia playback method also has the following characteristics:
the determining the multimedia data index information corresponding to the multimedia identifier comprises:
judging whether the edge server caches multimedia data index information corresponding to the multimedia identification or not;
when the edge server caches the multimedia data index information corresponding to the multimedia identifier, acquiring the multimedia data index information corresponding to the multimedia identifier from the cache of the edge server;
and when the edge server does not cache the multimedia data index information corresponding to the multimedia identifier, acquiring the multimedia data index information corresponding to the multimedia identifier from a multimedia data storage party and caching the multimedia data index information.
The live multimedia playback method also has the following characteristics:
the obtaining of the slice file sequence with the start slice file as a first slice file includes:
judging whether the edge server stores a slice file sequence taking the initial slice file as a first slice file or not;
when the edge server stores all or part of the slice files in a slice file sequence taking the starting slice file as a first slice file, acquiring all or part of the slice files from a memory of the edge server;
and when the edge server does not store all or part of the slice files in the slice file sequence taking the starting slice file as the first slice file, acquiring all or part of the slice files from a multimedia data storage party and storing the all or part of the slice files.
The invention provides a live multimedia playback device, which is applied to an edge server and comprises:
the multimedia playback system comprises a receiving module, a playing module and a playing module, wherein the receiving module is used for receiving a multimedia playback request sent by a client, and the multimedia playback request comprises a multimedia identifier and a playback starting time point;
the index information determining module is used for determining multimedia data index information corresponding to the multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
a slice file acquisition module, configured to determine a slice file identifier corresponding to the playback start time point, and use a slice file corresponding to the slice file identifier corresponding to the playback start time point as a start slice file, to acquire a slice file sequence with the start slice file as a first slice file;
and the sending module is used for sending the slice file sequence to the client.
The live multimedia playback device also has the following characteristics:
the index information acquisition module is used for synchronizing the index information of the multimedia data in a first preset time length from the current time from the multimedia data storage party at a first preset frequency in one of the following time intervals:
when the connection between the edge server and the client is not disconnected;
and the time interval between the edge server and the client is after the time point of disconnection of the edge server and the client and before the time point of disconnection of the edge server and the client, wherein the time interval is a second preset time.
The live multimedia playback device also has the following characteristics:
the index information determining module comprises a first judging unit, a first searching unit and a first communication unit;
the first judging unit is used for judging whether the device caches multimedia data index information corresponding to the multimedia identifier or not;
the first searching unit is configured to obtain the multimedia data index information corresponding to the multimedia identifier from the cache of the device when the first determining unit determines that the device has cached the multimedia data index information corresponding to the multimedia identifier;
the first communication unit is configured to, when the determining unit determines that the apparatus does not cache the multimedia data index information corresponding to the multimedia identifier, obtain and cache the multimedia data index information corresponding to the multimedia identifier from a multimedia data storage party.
The live multimedia playback device also has the following characteristics:
the slice file acquisition module comprises a second judgment unit, a second search unit and a second communication unit;
the second judging unit is configured to judge whether the apparatus has stored a slice file sequence with the start slice file as a first slice file;
the second search unit is configured to, when the second determination unit determines that the apparatus has stored all or part of the slice files in a slice file sequence in which the start slice file is a first slice file, acquire all or part of the slice files from a memory of the apparatus;
the second communication unit is configured to, when the second determination unit determines that the apparatus does not store all or part of the slice files in the sequence of slice files in which the start slice file is the first slice file, acquire and store all or part of the slice files from a multimedia data storage side.
The live multimedia playback device also has the following characteristics:
the multimedia data store may be a collection of one or more of the following: the system comprises a central server, a distributed cloud storage network and a block chain network.
The invention provides a live multimedia playback system, which comprises an edge server and a multimedia data storage subsystem;
the edge server includes:
the multimedia playback system comprises a receiving module, a playing module and a playing module, wherein the receiving module is used for receiving a multimedia playback request sent by a client, and the multimedia playback request comprises a multimedia identifier and a playback starting time point;
the index information determining module is used for determining multimedia data index information corresponding to the multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
a slice file acquisition module, configured to determine a slice file identifier corresponding to the playback start time point, and use a slice file corresponding to the slice file identifier corresponding to the playback start time point as a start slice file, to acquire a slice file sequence with the start slice file as a first slice file;
the sending module is used for sending the slice file sequence to the client;
wherein the content of the first and second substances,
the index information determining module comprises a first judging unit, a first searching unit and a first communication unit;
the first judging unit is used for judging whether the device caches multimedia data index information corresponding to the multimedia identifier or not;
the first searching unit is configured to obtain the multimedia data index information corresponding to the multimedia identifier from the cache of the device when the first determining unit determines that the device has cached the multimedia data index information corresponding to the multimedia identifier;
the first communication unit is configured to, when the first determination unit determines that the apparatus does not cache the multimedia data index information corresponding to the multimedia identifier, obtain and cache the multimedia data index information corresponding to the multimedia identifier from a multimedia data storage subsystem;
the slice file acquisition module comprises a second judgment unit, a second search unit and a second communication unit;
the second judging unit is configured to judge whether the apparatus has stored a slice file sequence with the start slice file as a first slice file;
the second search unit is configured to, when the second determination unit determines that the apparatus has stored all or part of the slice files in a slice file sequence in which the start slice file is a first slice file, acquire all or part of the slice files from a memory of the apparatus;
the second communication unit is used for acquiring all or part of the slice files from the multimedia data storage subsystem when the judging unit judges that the device does not store all or part of the slice files in the slice file sequence taking the starting slice file as the first slice file;
the multimedia data storage subsystem comprises:
the multimedia file segmentation module is used for segmenting the content of the multimedia into a plurality of slice files and constructing slice file index information of the slice files, wherein the slice file index information comprises slice file identification and playing information;
the receiving module is used for receiving a multimedia data index information request and a slice file request;
and the sending module is used for sending the multimedia data index information corresponding to the multimedia data index information request and the slice file corresponding to the slice file request.
The live multimedia playback system also has the following characteristics:
the edge server further comprises an index information acquisition module, which is used for synchronizing the multimedia data index information within a first preset time length from the current time from the multimedia data storage party at a first preset frequency in one of the following time intervals:
when the connection between the edge server and the client is not disconnected;
the time interval duration is a second preset time duration after the time point of disconnection between the edge server and the client and before the time point of disconnection;
wherein the multimedia data storage subsystem is a set of one or more of:
the system comprises a central server, a distributed cloud storage network and a block chain network.
The live multimedia playback system also has the following characteristics:
the live multimedia playback system is deployed on a CDN network, wherein the edge server is an edge server of the CDN network, and the multimedia data storage subsystem is deployed at a source station of the CDN network.
The invention can reduce the processing pressure of the multimedia data storage subsystem and reduce the resource consumption to a great extent, improve the service quality and reduce the operation cost, and can support the flexible expansion of the system.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a live multimedia playback method in an embodiment;
fig. 2 is a block diagram of a live multimedia playback apparatus in an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Fig. 1 is a flowchart of a live multimedia playback method in an embodiment, where the method is applied to an edge server, and includes:
step 101, receiving a multimedia playback request sent by a client, wherein the multimedia playback request comprises a multimedia identifier and a playback starting time point;
step 102, determining multimedia data index information corresponding to a multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
step 103, determining a slice file identifier corresponding to a playback start time point;
step 104, taking the slice file corresponding to the slice file identifier corresponding to the playback start time point as a start slice file, and acquiring a slice file sequence taking the start slice file as a first file;
The slice file in the method is a file which is segmented according to multimedia and has the length of one or more GOPs. The multimedia is divided into the slicing files for convenient transmission and buffering, when the multimedia is divided into the slicing files, the slicing files are divided by integral multiple of GOPs, the slicing files requested from any one can be ensured to start playing, and the smaller the number of GOPs contained in each slicing file is, the more accurate the searching of playback time points is. Each slice file has an identification.
When the multimedia is divided into the slice files, slice file index information is generated for each slice file, the slice file index information comprises a slice file identifier, a timestamp and playing information, and the playing information is necessary information for successfully playing the slice file. Compared with the slice file, the data volume of the slice file index information is much smaller, and the edge server acquires the slice file index information or caches the slice file index information, so that the access volume to the multimedia data storage subsystem can be reduced.
The multimedia of the method can refer to a multimedia program on a broadcast channel, and the mode for a multimedia data storage party to acquire a multimedia file comprises two modes, one mode is to fixedly pull the data of a certain channel or certain channels for storage, the other mode is to dynamically pull the data of the certain channel or certain channels for storage, and generally, the data needs to be played back for storage when the multimedia program exists in the certain channel.
Wherein the content of the first and second substances,
the first preset time period in step 102 is a parameter that can be modified, for example, the first preset time period is 1 day, and can be modified to 12 hours after the user's requirement changes.
The step 102 of determining the multimedia data index information corresponding to the multimedia identifier includes:
judging whether the edge server caches multimedia data index information corresponding to the multimedia identifier or not;
when the edge server caches the multimedia data index information corresponding to the multimedia identifier, the edge server acquires the multimedia data index information corresponding to the multimedia identifier from the cache of the edge server;
and when the edge server does not cache the multimedia data index information corresponding to the multimedia identifier, the edge server acquires the multimedia data index information corresponding to the multimedia identifier from a multimedia data storage party and caches the multimedia data index information.
The multimedia data storage party is a set of one or more of the following:
the system comprises a central server, a distributed cloud storage network and a block chain network.
Step 103 also determines a termination time point and a termination slice file, the termination time point being one of the following:
taking the time point of disconnection of the multimedia playback request sent by the client received in the step 101 as the playback ending time point;
and taking the time point after a second preset time (for example, 1 hour) after the disconnection requesting time point as a termination time point.
In step 103, the slice file corresponding to the slice file identifier corresponding to the playback end time point is used as an end slice file, and the slice file sequence taking the start slice file as the first slice file is a file sequence taking the start slice file as the start file and taking the end slice file as the end file.
The step 104 of obtaining a slice file sequence with the start slice file as a first slice file includes:
judging whether the edge server stores a slice file sequence taking the initial slice file as a first slice file or not;
when the edge server stores all or part of the slice files in a slice file sequence taking the initial slice file as a first slice file, acquiring all or part of the slice files from a memory of the edge server;
and when the edge server does not store all or part of the slice files in the slice file sequence taking the initial slice file as the first slice file, acquiring all or part of the slice files from the multimedia data storage side and storing the slice files.
When the edge server stores a slice file sequence taking the starting slice file as the starting file, the edge server can only store the starting slice file for a period of time, and after a fixed time or a latest preset time period, the edge server does not receive a playback request aiming at the slice file in the slice file sequence, and deletes the stored slice file sequence.
The method has the following advantages:
1. the edge server obtains all or newly generated multimedia data index information from the multimedia data storage party, so that the edge server can respond to the replay request corresponding to the multimedia at any time.
2. The edge server caches the multimedia data index information, and can directly acquire the multimedia data index information from local without frequently acquiring the multimedia data index information from a multimedia data storage party when receiving playback requests of different starting time points, so that the processing pressure of the multimedia data storage party can be effectively reduced, and the resource consumption is reduced.
3. The edge server stores the requested slice file, and can directly obtain the slice file from the local place when receiving the replay request without frequently obtaining the slice file from the multimedia data storage party, thereby effectively reducing the processing pressure of the multimedia data storage party and reducing the resource consumption.
Fig. 2 is a block diagram of a live multimedia playback apparatus applied to an edge server, the apparatus comprising:
the multimedia playback system comprises a receiving module, a playing module and a playing module, wherein the receiving module is used for receiving a multimedia playback request sent by a client, and the multimedia playback request comprises a multimedia identifier and a playback starting time point;
the index information determining module is used for determining multimedia data index information corresponding to the multimedia identifier, the multimedia data index information comprises slice file index information of all slice files of the multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
the slicing file acquisition module is used for determining a slicing file identifier corresponding to the playback starting time point, taking the slicing file corresponding to the slicing file identifier corresponding to the playback starting time point as a starting slicing file, and acquiring a slicing file sequence taking the starting slicing file as the starting file;
and the sending module is used for sending the slice file sequence to the client.
Wherein the content of the first and second substances,
the device also comprises an index information acquisition module, which is used for synchronizing the index information of the multimedia data in a first preset time length from the current time from the multimedia data storage party at a first preset frequency in one of the following time intervals:
when the connection between the edge server and the client is not disconnected;
and the time interval between the edge server and the client is after the time point of disconnection of the edge server and the client and before the time point of disconnection of the edge server and the client, wherein the time interval is a second preset time.
Wherein the multimedia data storage party is a set of one or more of:
the system comprises a central server, a distributed cloud storage network and a block chain network.
The index information determining module comprises a first judging unit, a first searching unit and a first communication unit;
the first judging unit is used for judging whether the device caches the multimedia data index information corresponding to the multimedia identifier or not;
the first searching unit is used for acquiring the multimedia data index information corresponding to the multimedia identifier from the cache of the device when the first judging unit judges that the multimedia data index information corresponding to the multimedia identifier is cached by the device;
and the first communication unit is used for acquiring and caching the multimedia data index information corresponding to the multimedia identifier from the multimedia data storage party when the judgment unit judges that the multimedia data index information corresponding to the multimedia identifier is not cached by the device.
The slice file acquisition module comprises a second judgment unit, a second search unit and a second communication unit.
A second judging unit configured to judge whether the apparatus has stored a slice file sequence having a start slice file as a first slice file;
a second search unit configured to acquire all or part of the slice files from a memory of the apparatus when the second determination unit determines that the apparatus has stored all or part of the slice files in a slice file sequence in which the start slice file is the first slice file;
and a second communication unit configured to acquire and store all or part of the slice file from the multimedia data storage side when the second determination unit determines that the apparatus does not store all or part of the slice file in the slice file sequence with the start slice file as the first slice file.
The multimedia data store may be a collection of one or more of the following: the system comprises a central server, a distributed cloud storage network and a block chain network.
The invention also provides a live multimedia playback system which comprises an edge server and a multimedia data storage subsystem.
The edge server includes:
the multimedia playback system comprises a receiving module, a playing module and a playing module, wherein the receiving module is used for receiving a multimedia playback request sent by a client, and the multimedia playback request comprises a multimedia identifier and a playback starting time point;
the index information determining module is used for determining multimedia data index information corresponding to the multimedia identifier, the multimedia data index information comprises slice file index information of all slice files of the multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
the slicing file acquisition module is used for determining a slicing file identifier corresponding to the playback starting time point, taking a slicing file corresponding to the slicing file identifier corresponding to the playback starting time point as a starting slicing file, and acquiring a slicing file sequence taking the starting slicing file as a first slicing file;
the sending module is used for sending the sequence of the slice files to the client;
wherein the content of the first and second substances,
the index information determining module comprises a first judging unit, a first searching unit and a first communication unit;
the first judging unit is used for judging whether the device caches the multimedia data index information corresponding to the multimedia identifier or not;
the first searching unit is used for acquiring the multimedia data index information corresponding to the multimedia identifier from the cache of the device when the judging unit judges that the multimedia data index information corresponding to the multimedia identifier is cached by the device;
the first communication unit is used for acquiring and caching the multimedia data index information corresponding to the multimedia identifier from the multimedia data storage subsystem when the first judgment unit judges that the device does not cache the multimedia data index information corresponding to the multimedia identifier;
the slice file acquisition module comprises a second judgment unit, a second search unit and a second communication unit;
a second judging unit configured to judge whether the apparatus has stored a slice file sequence having a start slice file as a first slice file;
a second search unit configured to acquire all or part of the slice files from the memory of the apparatus when the determination unit determines that the apparatus has stored all or part of the slice files in the sequence of slice files with the start slice file as the first slice file;
a second communication unit for acquiring all or part of the slice files from the multimedia data storage subsystem when the judging unit judges that the device does not store all or part of the slice files in the slice file sequence with the initial slice file as the first slice file;
the multimedia data storage subsystem comprises:
the multimedia file segmentation module is used for segmenting the content of the multimedia into a plurality of slice files and constructing slice file index information of the slice files, wherein the slice file index information comprises slice file identification and playing information;
the receiving module is used for receiving a multimedia data index information request and a slice file request;
and the sending module is used for sending the multimedia data index information corresponding to the multimedia data index information request and the slice file corresponding to the slice file request.
Wherein the content of the first and second substances,
the edge server also comprises an index information acquisition module, which is used for synchronizing the multimedia data index information within a first preset time length from the current time from the multimedia data storage party at a first preset frequency in one of the following time intervals:
when the connection between the edge server and the client is not disconnected;
the time interval between the edge server and the client is a second preset time;
wherein the multimedia data storage subsystem is a collection of one or more of:
the system comprises a central server, a distributed cloud storage network and a block chain network.
The live multimedia playback system is deployed on the CDN, wherein the edge server is an edge server of the CDN, and the multimedia data storage subsystem is deployed at a source station of the CDN.
The system has the following advantages: the existing CDN can be reused, corresponding software and a cache strategy are operated, the replay service can be provided for the client side, time for storing replay multimedia data does not need to be reserved, and therefore flexible expansion of the network is achieved. Moreover, when a problem occurs in the edge server or the network of a certain area, the edge server providing service for the area can be switched quickly, and the reliability of the service is ensured.
The embodiment of the invention also provides a live broadcast playback method, which is applied to the edge server and comprises the following steps:
step 301, receiving a multimedia playback request sent by a client, wherein the multimedia playback request comprises a multimedia identifier and a playback start time point;
step 302, requesting a slice file from a source station according to the multimedia identifier and the playback starting time point;
step 303, receiving the slice file and the identifier of the next slice file from the source station;
step 304, sending the slice file to a client; this step also includes storing the slice file.
Step 305 to step 306 are executed in a loop:
wherein the slice file received from the source station is one or more consecutive sequences of slice files in step 303. For example: if the received slice file is the first slice file in step 303, the identifier of the second slice file is also received; for another example: when the received slice file in step 303 is the first N slice files, the identifier of the (N + 1) th slice file is also received.
Step 305, determining whether the edge server has cached the slice file corresponding to the identifier of the next slice file, if not, requesting the source station for the slice file corresponding to the identifier of the next slice file;
step 306, receiving the slicing file from the source station, and sending the slicing file received from the source station to the client.
Step 306 also includes storing the slice file received from the source station.
The method can effectively deal with the conditions that the index file is large and the time for downloading the index data for the first time is long, only the source station needs to maintain the content of the index, and the edge server does not need to download all indexes, thereby shortening the response time; when the initial slicing file received from the source station is a plurality of continuous slicing file sequences when the review request is made, the first screen time can be further shortened, the delay is reduced, and the user experience is improved.
The embodiment of the invention also provides a live broadcast playback device, which is applied to the edge server, and the device comprises:
the first receiving module is used for receiving a multimedia playback request sent by a client, wherein the multimedia playback request comprises a multimedia identifier and a playback starting time point;
the first request module is used for requesting the slice file from the source station according to the multimedia identifier and the playback starting time point;
the second receiving module is used for receiving the slice file and the identifier of the next slice file from the source station;
and the first sending module is used for sending the slice file received by the second receiving module to the client.
The judging module is used for judging whether the edge server caches the slice file corresponding to the next slice file identifier or not;
a second request module, configured to request, from a source station, a sliced file corresponding to an identifier of the next sliced file when the edge server does not cache the sliced file corresponding to the identifier of the next sliced file;
a third receiving module, which receives the slice file from the source station;
and the second sending module is used for sending the slice file received by the third receiving module from the source station to the client.
The apparatus also includes a storage module to store the slice file received from the source station.
The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer-readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits, and accordingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (9)
1. A live multimedia playback method is applied to an edge server and comprises the following steps:
receiving a multimedia playback request sent by a client, wherein the multimedia playback request comprises a multimedia identifier and a playback starting time point;
determining multimedia data index information corresponding to the multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
determining a slice file identifier corresponding to the playback starting time point;
taking the slice file corresponding to the slice file identifier corresponding to the playback starting time point as a starting slice file;
taking the time point of disconnection of the multimedia playback request sent by the client as a playback ending time point, or taking the time point of second preset duration after the time point of disconnection of the multimedia playback request as the playback ending time point;
taking the slicing file corresponding to the slicing file identification corresponding to the playback ending time point as an ending slicing file;
acquiring a slice file sequence which takes the starting slice file as a first slice file and takes the terminal slice file as a terminal file;
sending the sequence of slice files to the client;
the method further comprises the following steps:
multimedia data index information within a first preset time period from the current time is synchronized from a multimedia data storage side at a first preset frequency.
2. The live multimedia playback method of claim 1,
the determining the multimedia data index information corresponding to the multimedia identifier comprises:
judging whether the edge server caches multimedia data index information corresponding to the multimedia identification or not;
when the edge server caches the multimedia data index information corresponding to the multimedia identifier, acquiring the multimedia data index information corresponding to the multimedia identifier from the cache of the edge server;
and when the edge server does not cache the multimedia data index information corresponding to the multimedia identifier, acquiring the multimedia data index information corresponding to the multimedia identifier from a multimedia data storage party and caching the multimedia data index information.
3. The live multimedia playback method of claim 1,
the obtaining of the slice file sequence with the start slice file as a first slice file includes:
judging whether the edge server stores a slice file sequence taking the initial slice file as a first slice file or not;
when the edge server stores all or part of the slice files in a slice file sequence taking the starting slice file as a first slice file, acquiring all or part of the slice files from a memory of the edge server;
and when the edge server does not store all or part of the slice files in the slice file sequence taking the starting slice file as the first slice file, acquiring all or part of the slice files from a multimedia data storage party and storing the all or part of the slice files.
4. A live multimedia playback device is applied to an edge server and is characterized by comprising:
the multimedia playback system comprises a receiving module, a playing module and a playing module, wherein the receiving module is used for receiving a multimedia playback request sent by a client, and the multimedia playback request comprises a multimedia identifier and a playback starting time point;
the index information determining module is used for determining multimedia data index information corresponding to the multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
the slicing file acquisition module is used for determining a slicing file identifier corresponding to the playback starting time point and taking a slicing file corresponding to the slicing file identifier corresponding to the playback starting time point as a starting slicing file; the system is also used for determining a slicing file identifier corresponding to the playback ending time point and taking the slicing file corresponding to the slicing file identifier corresponding to the playback ending time point as an ending slicing file; taking a time point of disconnection of a multimedia playback request sent by the client as a playback termination time point, or taking a time point after a second preset time after the time point of disconnection of the request as a playback termination time point; acquiring a slice file sequence which takes the starting slice file as a first slice file and takes the terminal slice file as a terminal file;
the sending module is used for sending the slice file sequence to the client;
the multimedia data storage system further comprises an index information acquisition module, which is used for synchronizing the multimedia data index information within a first preset time length from the current time from the multimedia data storage party at a first preset frequency.
5. The live multimedia playback apparatus of claim 4,
the index information determining module comprises a first judging unit, a first searching unit and a first communication unit;
the first judging unit is used for judging whether the device caches multimedia data index information corresponding to the multimedia identifier or not;
the first searching unit is configured to obtain the multimedia data index information corresponding to the multimedia identifier from the cache of the device when the first determining unit determines that the device has cached the multimedia data index information corresponding to the multimedia identifier;
the first communication unit is configured to, when the determining unit determines that the apparatus does not cache the multimedia data index information corresponding to the multimedia identifier, obtain and cache the multimedia data index information corresponding to the multimedia identifier from a multimedia data storage party.
6. The live multimedia playback apparatus of claim 4,
the slice file acquisition module comprises a second judgment unit, a second search unit and a second communication unit;
the second judging unit is configured to judge whether the apparatus has stored a slice file sequence with the start slice file as a first slice file;
the second search unit is configured to, when the second determination unit determines that the apparatus has stored all or part of the slice files in a slice file sequence in which the start slice file is a first slice file, acquire all or part of the slice files from a memory of the apparatus;
the second communication unit is configured to, when the second determination unit determines that the apparatus does not store all or part of the slice files in the sequence of slice files in which the start slice file is the first slice file, acquire and store all or part of the slice files from a multimedia data storage side.
7. The live multimedia playback apparatus of any one of claims 4 to 6,
the multimedia data store may be a collection of one or more of the following: the system comprises a central server, a distributed cloud storage network and a block chain network.
8. A live multimedia playback system is characterized by comprising an edge server and a multimedia data storage subsystem;
the edge server includes:
the multimedia playback system comprises a receiving module, a playing module and a playing module, wherein the receiving module is used for receiving a multimedia playback request sent by a client, and the multimedia playback request comprises a multimedia identifier and a playback starting time point;
the index information determining module is used for determining multimedia data index information corresponding to the multimedia identifier, wherein the multimedia data index information comprises slice file index information of all slice files of a multimedia corresponding to the multimedia identifier within a first preset time from the current time, and the slice file index information comprises a slice file identifier, a timestamp and playing information;
the slicing file acquisition module is used for determining a slicing file identifier corresponding to the playback starting time point and taking a slicing file corresponding to the slicing file identifier corresponding to the playback starting time point as a starting slicing file; the system is also used for determining a slicing file identifier corresponding to the playback ending time point and taking the slicing file corresponding to the slicing file identifier corresponding to the playback ending time point as an ending slicing file; taking a time point of disconnection of a multimedia playback request sent by the client as a playback termination time point, or taking a time point after a second preset time after the time point of disconnection of the request as a playback termination time point; acquiring a slice file sequence which takes the starting slice file as a first slice file and takes the terminal slice file as a terminal file;
the sending module is used for sending the slice file sequence to the client;
wherein the content of the first and second substances,
the index information determining module comprises a first judging unit, a first searching unit and a first communication unit;
the first judging unit is used for judging whether a live multimedia playback device applied to the edge server caches multimedia data index information corresponding to the multimedia identifier or not;
the first searching unit is configured to obtain the multimedia data index information corresponding to the multimedia identifier from the cache of the device when the first determining unit determines that the device has cached the multimedia data index information corresponding to the multimedia identifier;
the first communication unit is configured to, when the first determination unit determines that the apparatus does not cache the multimedia data index information corresponding to the multimedia identifier, obtain and cache the multimedia data index information corresponding to the multimedia identifier from a multimedia data storage subsystem;
the slice file acquisition module comprises a second judgment unit, a second search unit and a second communication unit;
the second judging unit is configured to judge whether the apparatus has stored a slice file sequence with the start slice file as a first slice file;
the second search unit is configured to, when the second determination unit determines that the apparatus has stored all or part of the slice files in a slice file sequence in which the start slice file is a first slice file, acquire all or part of the slice files from a memory of the apparatus;
the second communication unit is used for acquiring all or part of the slice files from the multimedia data storage subsystem when the judging unit judges that the device does not store all or part of the slice files in the slice file sequence taking the starting slice file as the first slice file;
the multimedia data storage subsystem comprises:
the multimedia file segmentation module is used for segmenting the content of the multimedia into a plurality of slice files and constructing slice file index information of the slice files, wherein the slice file index information comprises slice file identification and playing information;
the receiving module is used for receiving a multimedia data index information request and a slice file request;
the sending module is used for sending multimedia data index information corresponding to the multimedia data index information request and a slice file corresponding to the slice file request;
the edge server also comprises an index information acquisition module which is used for synchronizing the multimedia data index information within a first preset time length from the current time from the multimedia data storage party at a first preset frequency.
9. The live multimedia playback system of claim 8, wherein the live multimedia playback system is deployed over a CDN network, wherein the edge server is an edge server of the CDN network, and wherein the multimedia data storage subsystem is deployed at a source station of the CDN network.
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| CN113485966A (en) * | 2021-07-05 | 2021-10-08 | 中国联合网络通信集团有限公司 | Multimedia storage method and device, electronic equipment and readable storage medium |
| CN113891176B (en) * | 2021-10-08 | 2023-12-08 | 中移（杭州）信息技术有限公司 | HLS-based on-demand flow control method, device, equipment and storage medium |
| CN114501044B (en) * | 2021-12-23 | 2023-12-08 | 百果园技术(新加坡)有限公司 | Live broadcast data processing method, device, equipment and storage medium |
| CN115297095B (en) * | 2022-08-08 | 2024-03-08 | 上海哔哩哔哩科技有限公司 | Back source processing method, device, computing equipment and storage medium |
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