WO2017071566A1 - 网络视频播放方法和系统及用户终端、家庭流服务节点 - Google Patents

网络视频播放方法和系统及用户终端、家庭流服务节点 Download PDF

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Publication number
WO2017071566A1
WO2017071566A1 PCT/CN2016/103282 CN2016103282W WO2017071566A1 WO 2017071566 A1 WO2017071566 A1 WO 2017071566A1 CN 2016103282 W CN2016103282 W CN 2016103282W WO 2017071566 A1 WO2017071566 A1 WO 2017071566A1
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Prior art keywords
video
service node
cached
home
video resource
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PCT/CN2016/103282
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English (en)
French (fr)
Inventor
于荣国
熊勤
李青川
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中兴通讯股份有限公司
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Publication of WO2017071566A1 publication Critical patent/WO2017071566A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • 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
    • 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
    • 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
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
    • 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
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a network video playing method and system, a user terminal, and a home streaming service node.
  • IPTV Internet TV
  • OTT video and data service services of the open Internet
  • a traditional CDN system generally pushes media content to the "edge edge service” closest to the user network by adding one or more layers of CDN stream service nodes to the existing CDN operator system and then pushing the media content through various content pushdown policies.
  • Nodes are used to balance the amount of user access so that most users can access the required media content "near”.
  • the hot-spot pushdown and miss pull-down that are currently used by CDNs belong to a lagging PUSH strategy.
  • the pushdown content of various pushdown strategies is still stored in the CDN operator network system, along with the CDN source.
  • the quality of the user has increased greatly and the user's business volume has continued to grow. Under the circumstances that the user's home broadband cost is fixed, the current CDN system is still difficult to achieve high-quality video on demand services, and it is not stuck, especially when the peak hours and holidays come. This drawback will become more prominent.
  • the main technical problem to be solved by the present invention is to provide a network video playing method and system, a user terminal, and a home streaming service node, and to solve the existing video resources stored in the CDN operator network.
  • the network system leads to the problem of high-quality video jamming of hot video on demand services.
  • the present invention provides a network video playing method, including:
  • the user terminal establishes a network connection with the home streaming service node
  • the user terminal sends the cache control information of the video resource to be cached to the home stream service node; the cache control message includes the identifier information of the video resource to be cached;
  • the home stream service node acquires the to-be-cached video resource from the video source streaming media service node according to the control information, and caches the to-be-cached video resource;
  • the user terminal sends a play request to the home streaming service node to acquire the video resource to be cached for video playback.
  • the acquiring, by the home streaming service node, the video resource to be cached from the video source streaming service node according to the control information includes:
  • the home stream service node sends a cache pull-down request for the video resource to be cached to the global scheduling service node according to the cache control information
  • the global scheduling service node sends a cache pull-down request response message to the home stream service node, where the cache pull-down request response message includes identifier information of an optimal video source streaming media service node;
  • the home stream service node obtains the cached video resource to be cached by sending a buffer pull-down request for the video resource to be cached to the optimal video source streaming service node according to the cache pull-down request response message.
  • the sending, by the user terminal, the cache control information of the video resource to be cached to the home streaming service node includes: the user terminal acquiring electronic program information from the electronic program service node, and the electronic program information Determining a video to be cached; sending cache control information of the video to be cached to a home streaming service node;
  • the home streaming service node streams the media service node from the video source according to the control information. After the video resource to be cached is cached, the home streaming service node notifies the electronic program service node to cache the program information corresponding to the video to be cached in the electronic program information.
  • the home streaming service buffering the video resource to be cached includes: the home streaming service node buffering the to-be-cached video resource in an encryption buffer area.
  • the home streaming service node determines whether the video resource to be cached is aged, and if it is aged, performs automatic deletion.
  • the video to be cached includes an encrypted video
  • the cache control information further includes a secret key corresponding to the video to be cached
  • the play request includes a secret key corresponding to the video resource.
  • the home streaming service node acquires the video resource to be cached from the video source streaming service node according to the control information.
  • the code rate is the next code rate of the normal code rate of the video resource to be cached.
  • the manner in which the home streaming service node acquires the video resource to be cached from a video source streaming media service node according to the control information includes: the home streaming service node according to the control information After the fragmented video resource corresponding to the to-be-cached video resource is obtained from the video source media service node, the fragmented video resource is aggregated into a complete video resource.
  • the present invention further provides a network video playing method, including:
  • the user terminal establishes a network connection with the home streaming service node
  • the user terminal sends the cache control information of the video resource to be cached to the home stream service node; the cache control message includes the identifier information of the video resource to be cached;
  • the user terminal sends a play request to the home streaming service node to acquire the video resource to be cached for video playback.
  • the present invention further provides a network video playing method, including:
  • the home streaming service node establishes a network connection with the user terminal
  • the home stream service node receives the cache control information of the video resource to be cached sent by the user terminal; the cache control message includes the identifier information of the video resource to be cached;
  • the home stream service node acquires the to-be-cached video resource from the video source streaming media service node according to the control information, and caches the to-be-cached video resource.
  • the present invention also provides a network video playing system, including a user terminal and a home streaming service node:
  • the user terminal is configured to establish a network connection with a home streaming service node
  • the user terminal is further configured to send the cache control information of the video resource to be cached to the home stream service node; the cache control message includes the identifier information of the video resource to be cached;
  • the home stream service node is configured to acquire the to-be-cached video resource from the video source streaming media service node according to the control information, and cache the video resource to be cached;
  • the user terminal is further configured to send a play request to the home streaming service node to acquire the video resource to be cached for video playback.
  • the method further includes: a global scheduling service node,
  • the home stream service node is further configured to send a cache pulldown request for the video resource to be cached to the global scheduling service node according to the cache control information;
  • the global scheduling service node is configured to determine an optimal video source streaming media service node from all video source streaming media service nodes according to a preset scheduling policy
  • the global scheduling service node is further configured to send a cache pulldown request response message to the home streaming service node, where the cache pulldown request response message includes identifier information of an optimal video source streaming media service node;
  • the home stream service node is further configured to: obtain, according to the cache pull-down request response message, a cache pull-down request for sending a video resource to be cached to an optimal video source streaming service node to obtain the to-be-cached video resource.
  • the method further includes an electronic program service node, wherein the user terminal is further configured to acquire electronic program information from the electronic program service node, determine a video to be cached from the electronic program information, and send the to-be-sent Cache control information of the cached video to the home streaming service node;
  • the home stream service node is further configured to: after the home stream service node acquires the to-be-cached video resource from the video source streaming media service node according to the control information, and cache the video resource to be cached, notify the electronic program service node The program information corresponding to the video to be cached in the electronic program information is cached.
  • the video to be cached includes an encrypted video
  • the cache control information further includes a secret key corresponding to the video to be cached
  • the play request includes a secret key corresponding to the video resource.
  • the home streaming service node acquires the video resource to be cached from the video source streaming service node according to the control information.
  • the code rate is the next code rate of the normal code rate of the video resource to be cached.
  • the home streaming service node is further configured to obtain a fragmented video resource corresponding to the to-be-cached video resource from the video source streaming media service node according to the control information, and obtain the complete After that, the fragmented video resources are aggregated into a complete video resource.
  • the present invention further provides a user terminal, including a first connection module, a sending module, and a play module:
  • the first connection module is configured to establish a network connection with a home streaming service node
  • the sending module is configured to send the cache control information of the video resource to be cached to the home stream service node; the cache control message includes the identifier information of the video resource to be cached;
  • the playing module is configured to send a play request to the home streaming service node to acquire the video resource to be cached for video playback.
  • the present invention further provides a home streaming service node, including a second connection module, a receiving module, and a cache module:
  • the second connection module is configured to establish a network connection with the user terminal
  • the receiving module is configured to receive the cache control information of the video resource to be cached sent by the user terminal, where the cache control message includes the identifier information of the video resource to be cached;
  • the cache module is configured to acquire the video resource to be cached from the video source streaming service node according to the control information, and cache the video resource to be cached.
  • Another embodiment of the present invention provides a computer storage medium storing execution instructions for performing the method in the above embodiments.
  • the invention provides a network video playing method and system, a user terminal and a home stream service node, and the user terminal establishes a network connection with the home stream service node; the user terminal sends the cache control information of the video resource to be cached to the home stream service node, and the cache
  • the control message includes the identifier information of the video resource to be cached; the home stream service node obtains the video resource to be cached from the video source streaming media service node according to the control information, and caches the video resource to be cached; the user terminal sends a play request to the home stream service node to obtain the cache to be cached.
  • Video resources for video playback are examples of video resources for video playback.
  • the user terminal caches the home stream service node by pre-processing the cached video resource, and obtains the video resource from the home stream service node area for playing the video when playing the video, thereby preventing the video resource from being stored in the CDN operator network system.
  • the CDN hotspot video resource is pre-cached to the user's home stream service node, and the instantaneous dependence of the network media access on the broadband speed is minimized, so that the CDN user is at home broadband.
  • FIG. 1 is a schematic flowchart of a network video playing method according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic flowchart of a network video playing method according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic flowchart of a network video playing method according to Embodiment 3 of the present invention.
  • FIG. 4 is a schematic flowchart of a network video playing method according to Embodiment 4 of the present invention.
  • FIG. 5 is a schematic flowchart of a network video playing method according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic structural diagram of a user terminal according to Embodiment 6 of the present invention.
  • FIG. 7 is a schematic structural diagram of a home streaming service node according to Embodiment 6 of the present invention.
  • FIG. 8 is a schematic flowchart 1 of a network video playing system according to Embodiment 3 of the present invention.
  • FIG. 9 is a second schematic flowchart of a network video playing system according to Embodiment 3 of the present invention.
  • FIG. 10 is a third schematic flowchart of a network video playing system according to Embodiment 3 of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the network video playing method in this embodiment is as shown in FIG. 1 , and the method includes:
  • Step S101 The user terminal establishes a network connection with the home streaming service node.
  • the connection between the specific user terminal and the home streaming service node may be a wired network or a wireless network, and the connection is established to facilitate the user terminal to perform management control on the home streaming service node, and the related information of the user terminal is synchronized to Home stream service node.
  • the user terminal here may be a client or a specific device or device. It should be understood that as long as the control configuration of the home stream service node and video playback can be completed, of course, other functions, such as communication functions, may also be provided. .
  • the home stream service node here should be understood as being able to complete the video buffer and provide the user with video playback, etc., and of course other functions, such as security functions.
  • Step S102 The user terminal sends the cache control information of the video resource to be cached to the home stream service node, and the cache control message includes the identifier information of the video resource to be cached.
  • the user terminal causes the home streaming service node to obtain the cache of the video resource to be cached by using the control information, where the cache control information includes the identifier information of the video resource to be cached, so that the home stream service node can identify the specific video resource acquisition.
  • the specific identification information may be information that can be separately identified, such as the name, IP address, and storage identifier of the video resource to be cached.
  • the cache control information also includes information such as timing, that is, a specific acquisition time can be set according to the needs of the user terminal.
  • Step S103 The home stream service node acquires the video resource to be cached from the video source streaming media service node according to the control information, and caches the video resource to be cached.
  • the video source streaming service node herein refers to a device for storing a video resource by a CDN carrier network system, and may be a service node or a node, which should be understood as being capable of providing storage for video resources. And the other device obtains the stored video resource, and the home stream service node obtains the video resource that the user terminal wants from the video source streaming service node, and stores the video resource for subsequent use by the user terminal.
  • obtaining the video resource to be cached from the video source streaming service node may select the time when the network is idle, so that the timeliness of the network may be low, and the problem that the resource is crowded during peak hours is avoided.
  • Step S104 The user terminal sends a play request to the home stream service node to obtain a video resource to be cached for video playback.
  • the user terminal wants to perform video playback, and the electronic program list of the electronic program service node can acquire the video resources to be cached that are cached at the home stream service node, and when playing, the user stream is obtained from the home stream service node.
  • the video resources to be cached are played instead of directly acquiring resources from the content distribution network system CDN, which can avoid the timeliness requirement of the video playing to the network, and can also prevent the high-quality video from being played during the peak period of the network. .
  • the best video source streaming media service node selection may be performed first, and the specific process may be that the home streaming service node is controlled according to the control.
  • Obtaining the video resource to be cached from the video source streaming service node includes: the home stream service node generates the information according to the cache control information Sending a cache pull-down request for the video resource to be cached to the global scheduling service node; the global scheduling service node determines an optimal video source streaming media service node from all the video source streaming media service nodes according to the preset scheduling policy; The service node sends a cache pulldown request response message to the home stream service node, where the cache pulldown request response message includes the identifier information of the optimal video source streaming media service node; and the home stream service node responds to the optimal video source stream according to the cache pulldown request response message.
  • the media service node sends a cache pulldown request of the video resource to be cached to obtain a video resource to be cached.
  • other ways of quickly obtaining video resources to be cached from the video source streaming service node are also included.
  • the user terminal sends the cache control information of the video resource to be cached to the home stream service node, where the user terminal may obtain the electronic program information from the electronic program service node, determine the video to be cached from the electronic program information, and send the video to be cached.
  • the cache control information is sent to the home stream service node; that is, the user first obtains the video resources from the electronic program list of the electronic program service node EPG, and then selects the video to be cached, and can select the one that he or she likes.
  • the selection of the video to be cached herein may also be a random selection or a selection according to a related rule set by the user, such as a hot video, a latest video, or the like, or a recommendation of the video configured by the system.
  • the condition of the system configuration here refers to the recommendation similar video according to the video that the user usually watches, or the preference of the whole system, and of course, it is a random recommendation.
  • other ways to improve user experience are included.
  • the specific process is that the home streaming service node obtains the information from the video source streaming media service node according to the control information. After the video resource is cached and the video resource to be cached is cached, the home stream service node notifies the electronic program service node to cache the program information corresponding to the video to be cached in the electronic program information. After the buffering of the video resource to be cached is completed, the electronic program service node EPG performs an update flag of the electronic program guide.
  • the user terminal know and facilitate subsequent operations are included.
  • the specific process may be that the home streaming service caches the video resource to be cached, including: the home streaming service node is to be cached.
  • the video resource is cached in the encryption buffer.
  • the home stream service caches the video resource to be cached, and further includes: the home stream service node determines whether the video resource to be cached is aged, and if it is aged, automatically deletes the video resource.
  • the home stream service node determines whether the video resource to be cached is aged, and if it is aged, automatically deletes the video resource.
  • the video to be cached includes an encrypted video
  • the cache control information further includes a key corresponding to the video to be cached
  • the play request includes a key corresponding to the video resource. That is, the encrypted key needs a corresponding key to perform corresponding operations.
  • the encrypted video here refers to a video resource that is authorized for some videos.
  • the buffer is not good when the video is played.
  • the specific process is that when the user terminal is playing the video to be cached, the home streaming service node obtains the information from the video source streaming service node according to the control information.
  • the code rate of the cached video resource is the next code rate of the normal code rate of the video resource to be cached. This ensures that the cache is good while ensuring that the video plays well and improves the user experience.
  • other ways to make video resources cache and play well are included.
  • the specific process may be that the home stream service node obtains the video resource to be cached from the video source streaming media service node according to the control information, where the home stream service node flows from the video source according to the control information. After obtaining the fragmented video resource corresponding to the video resource to be cached, the media service node fragment aggregates the fragmented video resource into a complete video resource.
  • the media service node fragment aggregates the fragmented video resource into a complete video resource.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the network video playing method in this embodiment mainly includes the following components: a distributed EPG component, that is, an example of an electronic program service node (referred to as EPG), a global redirect service node (GSLB, Global Server Load Balancing), and a CDN stream.
  • EPG electronic program service node
  • GSLB global redirect service node
  • CDN stream a CDN stream.
  • An example of a service node that is, a source streaming media service node (abbreviated as Node), a user terminal device (UE, User Equipment), and a HomeCDN device, that is, a home streaming service node (HomeCDN), wherein the HomeCDN device includes a control module.
  • a distributed EPG component that is, an example of an electronic program service node (referred to as EPG)
  • GSLB Global Server Load Balancing
  • CDN stream a CDN stream.
  • An example of a service node that is, a source streaming media service node (abbreviated as No
  • Home Control referred to as Home-C
  • Home Service Home Service
  • Home-S service Service module
  • Cache encryption area referred to as Cache
  • storage area referred to as Storage
  • Step S201 Start the HomeCDN device and the user intelligent terminal device UE, respectively access the user home network to implement intelligent monitoring and mounting;
  • the user terminal after installing the HomeCDN client software on the user smart terminal device UE, and configuring the HomeCDN device information through the user terminal configuration interface, the user terminal automatically detects that the Home CDN device establishes a network connection with the home CDN device.
  • the HomeCDN service parameters are configured by the user terminal UE, and the configuration data is automatically synchronized to the HomeCDN device.
  • Step S202 The user terminal UE carries a HomeCDN service parameter to initiate a login request to the EPG.
  • Step S203 Each EPG records the login configuration carried by the user terminal UE when the user logs in, and sends the cached content list and the GSLB information to the user terminal device UE according to the user HomeCDN configuration;
  • Step S204 The user terminal UE receives the EPG message, parses the content list and the GSLB information, and sends the message to the Home CD module of the HomeCDN control layer software, and the Home-C module generates a cache task and writes it into the HomeCDN local small database; Home- The C module periodically selects a cache task to send to the HomeCDN streaming media service software Home-S module according to the HomeCDN cache time;
  • Step S205 The Home-S module receives the cache task, and initiates a cache content cache pull-down request to the GSLB.
  • Step S206 After receiving the cache-down request of the Home-S, the GSLB obtains the optimal streaming service Node according to the HomeCDN content cache scheduling policy principle, and returns a cache pull-down response to the Home-S.
  • Step S207 After receiving the cache pulldown response returned by the GSLB, the Home-S initiates a buffer pulldown request to the source streaming service node.
  • Step S208 After receiving the cache pull-down request from the Home-S, the content source stream service node starts to provide the content fragment cache pull-down service;
  • Step S209 After the Home-S cache pull-down is completed, the Home-C module is notified, and the state of the locally cached content is updated by the Home-C module;
  • Step S210 Home-C periodically integrates the content cache state, and reports the content cache result to the home EPG.
  • the EPG receives the content cache result, updates the page cache status, and sets the cache to succeed;
  • Step S211 For the cached content, when the user initiates the on-demand on the EPG page, the play URL returned by the EPG to the UE carries a special parameter for marking the local HomeCDN play.
  • Step S212 The user terminal UE directly initiates a play request to the local HomeCDN to play the local cache content.
  • Step S213 The Home-S system of the local HomeCDN system receives the play request and provides a local buffer content play service.
  • control of the partial service mechanism of the CDN system is released to the user, so as to implement the home control of the CDN hot content and the new content.
  • Make full use of the home network idle time pre-cache the CDN hotspot source to the user's home, minimize the immediacy dependence of network media access on broadband speed, so that CDN users can enjoy the new home broadband cost.
  • On-line content and hot media security acceleration and smooth on-demand while also greatly improving the utilization of home broadband networks.
  • the HomeCDN device in this embodiment bears the CDN service control software, the streaming media service software, and the small database software, and can receive the user terminal message and the recorded content cache list, and automatically generate the content cache task according to the user terminal configuration information.
  • the pre-cached CDN content from the CDN node can provide users with a large-capacity source buffer function and media security access function.
  • the built-in disk space is divided into a cache encryption area and a storage area, and the space size can be divided according to the configuration delivered by the user terminal, wherein the cache encryption area is used to store the encrypted cache fragment, and the data is not visible to the outside.
  • HomeCDN has a built-in encryption algorithm that supports copying encrypted segments of the buffer to the storage area for decryption, aggregate archiving, and USB external copying.
  • the device also supports autonomous aging of cached content, as well as PC client software management.
  • User intelligent terminal device As a home terminal device, it supports home point live broadcast service. were able Monitor and connect to manage HomeCDN devices by installing the HomeCDN client software. It can monitor the start and stop of the HomeCDN device, visually display the interface configuration operation of the HomeCDN device, and synchronize the configuration information of the user on the terminal to the HomeCDN device, such as: whether to enable the recommended mode, the TOP threshold, the cache open time period, and the cache aging. Configuration items such as time, one-click cleanup, whether to enable online cache, disk space allocation, and detection.
  • the EPG content cache list can be received, the EPG message is parsed, and delivered to the HomeCDN.
  • the EPG device uses a distributed networking mode to deliver a CDN content playlist, content recommendation information, or subscription information to a user terminal that belongs to the EPG according to the login parameter of the user intelligent terminal.
  • the EPG also visually presents the HomeCDN content cache status to the user in the form of an interface menu and provides various online ordering services to the user.
  • the GSLB global scheduling service node collects performance data of the CDN streaming service node and provides a redirection service for the user. Parsing the content cache request from the user HomeCDN, returning a performance-optimized content source stream service node according to the content distribution data and the HomeCDN cache scheduling policy, providing the user with a fast and accurate content encryption pull-down mechanism.
  • the CDN stream service node as a capability layer device of the CDN, provides a CDN content storage function and a live broadcast stream service function, provides a content cache pull-down or return source service to the HomeCDN device, and reports the node performance to the GSLB in real time.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the network video playing method in this embodiment after the HomeCDN online cache is enabled, can implement the side-pull-side service of the HomeCDN, providing a fast and convenient channel for the user's later replay operation, to some extent. It is also possible to increase the playback rate. It mainly includes the following steps:
  • Step S301 The user starts the online instant cache function on the terminal UE.
  • Step S302 The user terminal UE carries the online cache control parameter when the content on-demand request is initiated to the home EPG.
  • Step S303 The EPG returns a play URL to the user terminal UE, and carries the content information, GSLB. Information and HomeCDN local play tag parameters;
  • Step S304 The user terminal UE directly initiates a play request to the local HomeCDN.
  • Step S305 The local HomeCDN initiates a cache pull-down request directly from the Home-S to the GSLB without content;
  • Step S306 The GSLB selects an optimal streaming service node according to the HomeCDN cache scheduling policy, and returns a cache pulldown response to the Home-S module.
  • Step S307 After receiving the cache pulldown response of the GSLB, the Home-S obtains the content fragment from the designated CDN streaming service node.
  • no-cache when the user UE performs initial playback or positioning playback, the HomeCDN device type is carried in each fragment request of the GSLB;
  • Step S308 The CDN stream service node directly provides a fragment file with a lower code rate, which is used to improve the buffer efficiency of the terminal, and the subsequent fragment is normal code, if it is determined that the terminal device type is HomeCDN. Rate provided;
  • Step S309 The user UE implements an online edge pull function on the local HomeCDN.
  • the content cache data is stored in the encryption buffer area and periodically ages automatically according to the HomeCDN configuration.
  • the control of the CDN content pre-pushing mechanism is released to the user, and the new control of the CDN content and the hot content is realized, and the distribution efficiency of the content cache data is improved.
  • the user installs the HomeCDN client software on the home terminal, manages the HomeCDN device independently, and determines the cache time of the source.
  • the user can fully utilize the paid home network during the working hours and night breaks, which greatly improves the utilization of the home broadband. Rate, the network media access to the instantaneous speed dependence of broadband speed to a minimum, can enhance the user's smooth on-demand experience of hot content and new online content.
  • the HomeCDN disk is divided into a cache encryption area and a storage area.
  • the HomeCDN device is started and connected to the user's home network.
  • the user intelligent terminal device is activated to access the user home network.
  • the user terminal After installing the HomeCDN client software on the user intelligent terminal device and configuring the HomeCDN device information through the user terminal configuration interface, the user terminal can automatically monitor the local area network.
  • HomeCDN device and establish a network connection with it.
  • Subsequent configuration of the HomeCDN service parameters through the user terminal interface can automatically synchronize data to the HomeCDN device.
  • Each EPG records the login configuration carried by the user terminal UE when the user logs in, and sends the cached content list and the GSLB information to the user terminal device according to the user HomeCDN configuration.
  • the user terminal receives the EPG message, parses the content list and the GSLB information, and sends the message to the HomeCDN control layer software, and the control layer software generates a cache task and writes it into the HomeCDN local small database.
  • the HomeCDN streaming media service software periodically queries the content caching task according to the service configuration, and initiates a content cache pull-down request to the GSLB.
  • the GSLB schedules according to the HomeCDN cache content scheduling policy, queries a content source stream service node, and returns a cache pulldown response to the HomeCDN.
  • the HomeCDN initiates a cache pulldown request to the content source service node returned by the GSLB.
  • the content source service node starts to provide the content fragmentation pulldown service.
  • the HomeCDN saves the cached content in the cache encryption area, and after the cache is successfully pulled down, updates the state of the locally cached content, and the HomeCDN control software periodically reports the content cache status to the home EPG.
  • the content fragment of the cache encryption area is not visible to the outside world.
  • the EPG receives the content cache result of the HomeCDN, updates the cache status, and successfully sets the drop-down success to the cache and displays it on the EPG page.
  • the playback URL returned by the EPG carries a special parameter for marking the local HomeCDN cache play.
  • the user terminal directly initiates a play request to the local HomeCDN private network IP address, and the HomeCDN plays the local encrypted area cache source.
  • the HomeCDN can initiate autonomous aging for the locally cached content. After the aging succeeds, the HomeCDN control software can report the aging result to the home EPG.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the network video playing method in this embodiment is also implemented by adding a recommendation engine module, as shown in the module in FIG. 4: CDN statistical service node (referred to as CDNSTAT, for short).
  • CDN Statistics CDN Recommendation Engine
  • CMS Content Management System
  • CDNWEB CDN Service Configuration Portal
  • CDNM CDN Manager
  • This embodiment further enhances user privacy, content copyright, and system security by introducing a secret key mechanism in the content recommendation process.
  • the recommended content distribution data is pushed to the GSLB, which not only achieves precise control of node performance and accurate scheduling of recommended content, but also does not bring performance pressure due to excessive content data. It is controlled by GSLB globally, to a certain extent.
  • the performance conflict between the HomeCDN content cache and the user point live broadcast service to the streaming service node can also be balanced. It mainly includes the following steps:
  • Step S401 The statistical service node CDNSTAT collects the CDN CDR data of the whole network, collects the CDN hotspot data according to the CDR information, and feeds the hotspot data to the recommendation engine CDNRE as a hotspot recommendation;
  • Step S402 The content management platform CMS feeds back the latest CDN content to the CDNRE as a new piece of data recommendation;
  • Step S403 The CDNRE reviews the hotspot data and the new slice data according to the configuration parameters of the TOP list, estimates the content hotspot, and integrates the recommended data in the recommendation period.
  • Step S404 The CDNR sends a recommendation message to the distributed EPG system and the CDNM, including the recommended key and the recommended data;
  • the method further includes the EPG updating the recommended key after receiving the recommendation message, and synchronizing the content recommendation data to the local database.
  • Step S405 After receiving the content recommendation message, the CDNM updates the local recommendation key, and sends a secret key update notification to the GSLB.
  • the method further includes: simultaneously, the CDNM queries the content distribution information of the CDN node according to the content recommendation data, and packages the recommended content distribution information to the GSLB scheduling service node. Subsequently, the data change request is initiated to the GSLB actively when the CDNM content distribution information changes.
  • Step S406 configuring a HomeCDN content cache scheduling policy through the CDNWEB page, and automatically configuring the configuration data to the GSLB scheduling service node;
  • Step S407 The GSLB scheduling service node performs performance collection and recommendation key synchronization
  • the GSLB scheduling service node synchronizes the information to the local in-memory database.
  • the GSLB sends the recommended key to each streaming service node through the performance collection interface.
  • Step S408 Each EPG records the login configuration carried by the user terminal UE when the user logs in;
  • the EPG pushes the recommendation data, the GSLB information, and the recommended key to the terminal device UE belonging to the EPG according to the user terminal configuration information.
  • Step S409 The user sends the recommendation information and the secret key and the recommendation task to the HomeCDN service node;
  • the user terminal UE after receiving the recommendation data, the GSLB information, and the recommendation key of the EPG, the user terminal UE sends the message to the Home-C module of the HomeCDN service node, and the Home-C module writes the local small database; the recommendation information here An example of caching control information.
  • the Home-C module periodically selects a cache task to send to the Home-S module according to the cache open time configured by the UE of the user terminal;
  • Step S410 The Home-S module receives the cache task, generates a encrypted string according to the recommended key by using a built-in encryption algorithm, and initiates a recommended content cache pull-down request to the GSLB, where the request carries the encrypted string;
  • Step S411 After receiving the cache pull-down request of the Home-S, the GSLB checks the encrypted string in the pull-down request according to the local recommended key, and if the check succeeds, the pull-down request starts to be processed, and if the check fails, the direct return fails.
  • the GSLB queries the recommended content distribution information, obtains the optimal Node according to the HomeCDN content cache scheduling policy principle, and returns a cache pulldown response to the Home-S; for the VIP client, the GSLB supports the content distribution information query failure. Or if the node is abnormal, return directly to the source station to provide the source download service.
  • Step S412 After receiving the cache pulldown response returned by the GSLB, the Home-S carries the encrypted string and initiates a buffer pulldown request to the source streaming service node Node.
  • Step S413 After receiving the cache pull-down request from Home-S, the content source stream service node Node checks the encrypted string in the pull-down request according to the local recommendation key, and if the verification succeeds, the content fragmentation buffer pull-down service is started, and the verification is started. If it fails, it will return directly to failure;
  • Step S414 Home-S saves the drop-down content slice in the cache encryption area, and after the content cache pull-down is completed, notifies the Home-C module, and the Home-C module updates the state of the recommended content in the local data;
  • Step S415 Home-C periodically integrates the cache task result, and reports the content recommendation result to the home EPG, and the EPG receives the content recommendation result, updates the page recommendation status, and sets the recommendation success;
  • Step S416 For the content that is successfully recommended, when the user initiates the on-demand on the EPG page, the playback URL returned by the EPG carries a special parameter, which is used to mark the local HomeCDN encryption area cache play;
  • Step S417 The user terminal UE directly initiates a play request to the local HomeCDN.
  • Step S418 The Home-S system of the local Home CDN system receives the play request, parses the URL encryption string according to the local recommended key, and plays the local cache source.
  • the content in this embodiment is an example of a video resource to be cached.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the network video playing method in this embodiment can also copy the content of the cache encryption area to the storage area, decrypt and aggregate the cached fragments into an overall file, and satisfy the user's replay requirement, and provide external information.
  • Content copy function This solution can make the HomeCDN system easier to control the ownership of CDN content, and to some extent, to meet the download requirements of VIP users for hot film sources.
  • Content is cached and aggregated by sharding, which can improve the download efficiency of HomeCDN content. It mainly includes the following steps:
  • Step S501 The recommendation engine CDNRE issues a source release list to the distributed EPG component.
  • Step S502 The EPG receives the release notification, synchronizes the content list to the local, and parses the content list;
  • the content of the user has been cached successfully, and the HOME source archive ordering menu can be displayed on the EPG.
  • Step S503 The user selects the successfully sourced source of the cache and clicks the ‘HOME Archive’ button to trigger the online archiving of the HomeCDN cache source;
  • the EPG sends the HomeCDN content archive list to the user terminal UE, and the delivery request carries the source decryption password.
  • Step S504 After receiving the cache source archive request, the user terminal UE sends the request to the HomeCDN control layer module Home-C;
  • Step S505 The Home-C module parses the cache source archive request, enters the database and periodically scans, and notifies the Home-S module;
  • the Home-S module receives the cache source archive task, copies the cache fragment of the encryption area to the storage area, decrypts and aggregates the cache fragment into an overall content file, completes the cache source archive, and notifies the home- C module.
  • Step S506 The Home-C module updates the content status of the local database, and periodically reports the HomeCDN archive result to the EPG.
  • Step S507 The EPG receives the HomeCDN archive result, and updates the content recommendation status
  • the content is successfully archived, and the user can connect the HomeCDN to the storage area through the USB connection of the PC.
  • Step S508 The user terminal UE initiates HomeCDN archive content on-demand to the EPG;
  • Step S509 the EPG returns an archive content on-demand response to the user terminal UE.
  • the specific archive content on-demand response includes a service parameter carrying a special parameter for marking the playback of the local HomeCDN archive content.
  • GSLB information is additionally added to the service URL.
  • Step S510 The user terminal UE receives the service URL returned by the EPG, and directly goes to the local HomeCDN initiates a play request;
  • Step S511 The Home-S parses the play request and plays the archive source of the local storage area.
  • Home-S can directly return the return source play URL of the GSLB to the user terminal UE.
  • the user terminal 600 provided in this embodiment, as shown in FIG. 6, includes a first connection module 601, a sending module 602, and a playing module 603: wherein the first connection module 601 is configured to establish a network connection with the home streaming service node 700; The module 602 is configured to send the cache control information of the video resource to be cached to the home stream service node 700; the cache control message includes the identifier information of the video resource to be cached; the play module 603 is configured to send a play request to the home stream service node 700 to obtain the video to be cached. Resources for video playback.
  • the home streaming service node 700 provided in this embodiment, as shown in FIG. 7, includes a second connection module 701, a receiving module 702, and a cache module 703: wherein the second connection module 701 is configured to establish a network connection with the user terminal 600; The module 702 is configured to receive the cache control information of the video resource to be cached sent by the user terminal 600; the cache control message includes the identifier information of the video resource to be cached;
  • the cache module 703 is configured to obtain a video resource to be cached from the video source streaming service node according to the control information, and cache the video resource to be cached.
  • the network video playing system includes a user terminal 600 and a home stream service node 700: wherein the user terminal 600 is set to establish a network connection with the home stream service node 700; the user terminal 600 is further configured to Sending the cache control information of the video resource to be cached to the home stream service node 700; the cache control message includes the identifier information of the video resource to be cached; and the home stream service node 700 is configured to obtain the video resource to be cached from the video source streaming service node according to the control information.
  • the video resource to be cached is cached; the user terminal 600 is further configured to send a play request to the home stream service node 700 to obtain a video resource to be cached for video playback.
  • the network video playing system provided in this embodiment, as shown in FIG. 9, further includes global scheduling and setting The service node 800, wherein the home stream service node 700 is further configured to send a cache pulldown request for the video resource to be cached to the global dispatch service node 800 according to the cache control information; the global dispatch service node 800 is set to follow the preset scheduling policy.
  • An optimal video source streaming service node is determined among all the video source streaming service nodes; the global scheduling service node 800 is further configured to send a buffer pulldown request response message to the home streaming service node 700, and the cache pulldown request response message includes an optimal
  • the home stream service node 700 is further configured to: send a cached video resource to the cached video resource to be cached according to the cache pulldown request response message to the optimal video source streaming service node.
  • the network video playing system provided in this embodiment, as shown in FIG. 10, further includes an electronic program service node 900, wherein the user terminal 600 is further configured to acquire electronic program information from the electronic program service node 900, and determine from the electronic program information.
  • the electronic program service node 900 is notified to cache the program information corresponding to the video to be cached in the electronic program information.
  • the video to be cached includes an encrypted video
  • the cache control information further includes a key corresponding to the video to be cached
  • the play request includes a key corresponding to the video resource.
  • the home stream service node 700 acquires the code rate of the video resource to be cached from the video source streaming service node according to the control information, and the next rate of the normal code rate of the video resource to be cached. File rate.
  • the home stream service node 700 is further configured to: after obtaining the fragmented video resource corresponding to the video resource to be cached from the video source streaming media service node according to the control information, after acquiring the complete, the fragmented video resource is aggregated into a complete Video resources.
  • Embodiments of the present invention also provide a storage medium.
  • an execution instruction is stored in the storage medium, and the execution instruction is used to execute the foregoing method.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a random access memory (Random).
  • Access Memory referred to as RAM
  • mobile hard disk disk or optical disk, and other media that can store program code.
  • the network video playing method and system, the user terminal, and the home streaming service node provided by the embodiments of the present invention have the following beneficial effects: the user terminal caches the home streaming service node by pre-processing the cached video resource, and plays the video when playing the video.
  • Obtaining video resources from the home stream service node area for playing can avoid the problem that the video resource is stored in the CDN carrier network system during peak usage period, and the CDN hotspot video resource is pre-cached to the user's home stream service.
  • the instant dependence of the network media access on the broadband speed is minimized, so that the CDN user can enjoy the security acceleration and smooth on-demand of the new online content and the hot media when the home broadband cost is determined, and at the same time, Significantly improve the utilization of home broadband networks.

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Abstract

本发明提供的网络视频播放方法和系统及用户终端、家庭流服务节点，应用于通信领域。用户终端与家庭流服务节点建立网络连接；用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点；缓存控制消息包括待缓存视频资源的标识信息；家庭流服务节点根据控制信息从视频源流媒体服务器获取待缓存视频资源，缓存待缓存视频资源；用户终端发送播放请求给家庭流服务节点获取待缓存视频资源进行视频播放。与现有技术相比，用户终端通过预先对待缓存视频资源进行家庭流服务节点的缓存，播放视频时从家庭流服务节点区获取视频资源进行播放，能够避免从视频资源存储于CDN运营商网络系统在高峰使用期导致高画质卡顿的问题。

Description

网络视频播放方法和系统及用户终端、家庭流服务节点 技术领域
本发明涉及通信领域，具体涉及一种网络视频播放方法和系统及用户终端、家庭流服务节点。
背景技术
随着通讯技术及半导体技术的飞速发展，高分辨率液晶技术不断提升，网络电视用户数急速增加，交互式网络电视(Internet Protocol Television，IPTV)技术及开放互联网的各种视频及数据服务业务(Over The Top，OTT)技术也得到了快速推广，已陆续开始在世界各地大规模采用和部署。尤其是当下4K及8K技术在家庭应用方面的推广，对我国方兴未艾的内容分发网络(Content Delivery Network，CDN)视频产业带来了更多需求，对家用用户终端设备、CDN内容分发技术以及用户体验等都提出了更高的要求。
传统CDN系统一般是通过在现有的CDN运营商系统中增加了一层或多层CDN流服务节点，然后通过各种内容下推策略，将媒体内容推送到最接近用户网络的“边缘流服务节点”，用来均衡用户访问量，使得多数用户能够“就近”访问到所需要的媒体内容。然而，当前CDN所惯用的热点下推、未命中下拉等均属于一种滞后的PUSH策略，各种下推策略下推后的内容依旧存储于CDN运营商网络系统之中，随着CDN片源质量的大幅提升以及用户业务量的不断壮大，在用户家用宽带成本既定的情况下，当前CDN系统依旧难以实现热点视频点播业务高画质、不卡顿，尤其在下班高峰期及节假日到来时，这一弊端会显现的更为突出。
发明内容
本发明要解决的主要技术问题是提供一种网络视频播放方法和系统及用户终端、家庭流服务节点，解决现有视频资源存储于CDN运营商网 络系统导致实现热点视频点播业务高画质卡顿的问题。
为解决上述问题，本发明提供一种网络视频播放方法,包括：
用户终端与家庭流服务节点建立网络连接；
所述用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点；所述缓存控制消息包括所述待缓存视频资源的标识信息；
所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源；
所述用户终端发送播放请求给所述家庭流服务节点获取所述待缓存视频资源进行视频播放。
在本发明的一种实施例中，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源包括：
所述家庭流服务节点根据所述缓存控制信息生向全局调度定服务节点发送待缓存视频资源的缓存下拉请求；
所述全局调度定服务节点根据预设调度策略从所有视频源流媒体服务节点中确定一个最优的视频源流媒体服务节点；
所述全局调度定服务节点向所述家庭流服务节点发送缓存下拉请求响应消息，所述缓存下拉请求响应消息包括最优的视频源流媒体服务节点的标识信息；
所述家庭流服务节点根据所述缓存下拉请求响应消息向最优的视频源流媒体服务节点发送待缓存视频资源的缓存下拉请求获取所述待缓存视频资源。
在本发明的一种实施例中，所述用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点包括：所述用户终端从电子节目服务节点获取电子节目信息，从所述电子节目信息中确定待缓存视频；发送所述待缓存视频的缓存控制信息给家庭流服务节点；
在所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点 获取所述待缓存视频资源，缓存所述待缓存视频资源后，还包括：所述家庭流服务节点通知电子节目服务节点对电子节目信息中所述待缓存视频对应的节目信息进行缓存标记。
在本发明的一种实施例中，所述家庭流服缓存所述待缓存视频资源包括：所述家庭流服务节点将所述待缓存视频资源缓存在加密缓存区中。
在本发明的一种实施例中，所述家庭流服缓存所述待缓存视频资源之后还包括：所述家庭流服务节点判断所述待缓存视频资源是否老化，如果老化，进行自动删除。
在本发明的一种实施例中，所述待缓存视频包括加密视频，所述缓存控制信息还包括所述待缓存视频对应的秘钥，所述播放请求包括所述视频资源对应的秘钥。
在本发明的一种实施例中，当所述用户终端正在播放所述待缓存视频时，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源的码率为所述待缓存视频资源的正常码率的下一档码率。
在本发明的一种实施例中，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源的方式包括：所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点分片从获取所述待缓存视频资源对应的分片视频资源，获取完整后，将分片视频资源聚合成完整的视频资源。
为解决上述问题，本发明还提供一种网络视频播放方法,包括：
用户终端与家庭流服务节点建立网络连接；
所述用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点；所述缓存控制消息包括所述待缓存视频资源的标识信息；
所述用户终端发送播放请求给所述家庭流服务节点获取所述待缓存视频资源进行视频播放。
为解决上述问题，本发明还提供一种网络视频播放方法,包括：
家庭流服务节点与用户终端建立网络连接；
所述家庭流服务节点接收所述用户终端发送的待缓存视频资源的缓存控制信息；所述缓存控制消息包括所述待缓存视频资源的标识信息；
所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源。
为解决上述问题，本发明还提供一种网络视频播放系统,包括用户终端和家庭流服务节点：
所述用户终端设置为与家庭流服务节点建立网络连接；
所述用户终端还设置为发送待缓存视频资源的缓存控制信息给家庭流服务节点；所述缓存控制消息包括所述待缓存视频资源的标识信息；
所述家庭流服务节点设置为根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源；
所述用户终端还设置为发送播放请求给所述家庭流服务节点获取所述待缓存视频资源进行视频播放。
在本发明的一种实施例中，还包括全局调度定服务节点，
所述家庭流服务节点还设置为根据所述缓存控制信息生向全局调度定服务节点发送待缓存视频资源的缓存下拉请求；
所述全局调度定服务节点设置为根据预设调度策略从所有视频源流媒体服务节点中确定一个最优的视频源流媒体服务节点；
所述全局调度定服务节点还设置为向所述家庭流服务节点发送缓存下拉请求响应消息，所述缓存下拉请求响应消息包括最优的视频源流媒体服务节点的标识信息；
所述家庭流服务节点还设置为根据所述缓存下拉请求响应消息向最优的视频源流媒体服务节点发送待缓存视频资源的缓存下拉请求获取所述待缓存视频资源。
在本发明的一种实施例中，还包括电子节目服务节点，所述用户终端还设置为从电子节目服务节点获取电子节目信息，从所述电子节目信息中确定待缓存视频；发送所述待缓存视频的缓存控制信息给家庭流服务节点；
所述家庭流服务节点还设置为在所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源后，通知电子节目服务节点对电子节目信息中所述待缓存视频对应的节目信息进行缓存标记。
在本发明的一种实施例中，所述待缓存视频包括加密视频，所述缓存控制信息还包括所述待缓存视频对应的秘钥，所述播放请求包括所述视频资源对应的秘钥。
在本发明的一种实施例中，当所述用户终端正在播放所述待缓存视频时，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源的码率为所述待缓存视频资源的正常码率的下一档码率。
在本发明的一种实施例中，所述家庭流服务节点还设置为根据所述控制信息从视频源流媒体服务节点分片从获取所述待缓存视频资源对应的分片视频资源，获取完整后，将分片视频资源聚合成完整的视频资源。
为解决上述问题，本发明还提供一种用户终端,包括第一连接模块、发送模块和播放模块：
所述第一连接模块设置为与家庭流服务节点建立网络连接；
所述发送模块设置为发送待缓存视频资源的缓存控制信息给家庭流服务节点；所述缓存控制消息包括所述待缓存视频资源的标识信息；
所述播放模块设置为发送播放请求给所述家庭流服务节点获取所述待缓存视频资源进行视频播放。
为解决上述问题，本发明还提供一种家庭流服务节点,包括第二连接模块、接收模块和缓存模块：
所述第二连接模块设置为与用户终端建立网络连接；
所述接收模块设置为接收所述用户终端发送的待缓存视频资源的缓存控制信息；所述缓存控制消息包括所述待缓存视频资源的标识信息；
所述缓存模块设置为根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源。
本发明另一实施例提供了一种计算机存储介质，所述计算机存储介质存储有执行指令，所述执行指令用于执行上述实施例中的方法。
本发明的有益效果是：
本发明提供的一种网络视频播放方法和系统及用户终端、家庭流服务节点，用户终端与家庭流服务节点建立网络连接；用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点，缓存控制消息包括待缓存视频资源的标识信息；家庭流服务节点根据控制信息从视频源流媒体服务节点获取待缓存视频资源，缓存待缓存视频资源；用户终端发送播放请求给家庭流服务节点获取待缓存视频资源进行视频播放。与现有技术相比，用户终端通过预先对待缓存视频资源进行家庭流服务节点的缓存，播放视频时从家庭流服务节点区获取视频资源进行播放，能够避免从视频资源存储于CDN运营商网络系统在高峰使用期导致高画质卡顿的问题，将CDN热点视频资源预缓存至用户的家庭流服务节点中，将网络媒体访问对宽带速度的即时性依赖降到最低，使得CDN用户在家用宽带成本既定的情况下，也可以享受到新上线内容及热点媒体的安全加速与流畅点播，同时还可以大幅提升家用宽带网络的利用率。
附图说明
图1为本发明实施例一提供的网络视频播放方法流程示意图；
图2为本发明实施例二提供的网络视频播放方法流程示意图；
图3为本发明实施例三提供的网络视频播放方法流程示意图；
图4为本发明实施例四提供的网络视频播放方法流程示意图；
图5为本发明实施例五提供的网络视频播放方法流程示意图；
图6为本发明实施例六提供的用户终端结构示意图；
图7为本发明实施例六提供的家庭流服务节点结构示意图；
图8为本发明实施例三提供的网络视频播放系统流程示意图一；
图9为本发明实施例三提供的网络视频播放系统流程示意图二；
图10为本发明实施例三提供的网络视频播放系统流程示意图三。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一：
本实施例的网络视频播放方法，如图1所示，该方法包括：
步骤S101：用户终端与家庭流服务节点建立网络连接；
在该步骤中，具体的用户终端与家庭流服务节点建立连接可以是有线网络，也可以是无线网络，建立连接便于用户终端来对家庭流服务节点进行管理控制，以及用户终端的相关信息同步到家庭流服务节点。这里的用户终端可以是一个客户端，也可以是一个特定的装置或者设备，应该理解为只要能够完成对家庭流服务节点的控制配置以及进行视频播放等，当然还可以具有其他功能，比如通信功能。这里的家庭流服务节点应该理解为能够完成视频的缓存并且能够为用户提供视频播放等，当然还可以具有其他功能，比如安全功能。
步骤S102：用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点，缓存控制消息包括待缓存视频资源的标识信息；
在该步骤中，用户终端通过控制信息让家庭流服务节点进行待缓存视频资源的获取缓存，这里的缓存控制信息包含待缓存视频资源的标识信息便于家庭流服务节点能够识别具体的视频资源获取，具体的标识信息可以是待缓存视频资源的名称、IP地址、存储标识等能够区别识别的信息。缓存控制信息还包含定时等信息，即可以根据用户终端的需要设置好具体的获取时间等。
步骤S103：家庭流服务节点根据控制信息从视频源流媒体服务节点获取待缓存视频资源，缓存待缓存视频资源；
在该步骤中，这里的视频源流媒体服务节点是指CDN运营商网络系统存储视频资源的设备等，具体可以是一个服务节点，也可以是一个节点，应该理解为能够为提供视频资源的存储以及让其他设备获取存储的视频资源即可，家庭流服务节点从视频源流媒体服务节点获取用户终端想要的视频资源，存储后，便于用户终端后续使用。优选的，从视频源流媒体服务节点获取待缓存视频资源可以选择网络空闲时候，这样可以对网络的及时性要求低，避免高峰时间获取资源较拥挤的问题。
步骤S104：用户终端发送播放请求给家庭流服务节点获取待缓存视频资源进行视频播放。
在该步骤中，用户终端想进行视频播放，可以通过电子节目服务节点的电子节目单获取那些事在家庭流服务节点进行缓存的待缓存视频资源，进行播放时，是从家庭流服务节点进行获取待缓存视频资源进行播放，而不是直接从内容分发网络系统CDN中去获取资源进行播放，可以避免进行视频播放对网络的及时性要求，也能避免在网络高峰使用期不能进行视频高质量的播放。
由于内容分发网络系统CDN存在多个视频源流媒体服务节点，为了便于快速获取待缓存视频资源，可以通过先进行最佳的视频源流媒体服务节点选择，具体过程可以是家庭流服务节点根据控制信息从视频源流媒体服务节点获取待缓存视频资源包括：家庭流服务节点根据缓存控制信息生 向全局调度定服务节点发送待缓存视频资源的缓存下拉请求；全局调度定服务节点根据预设调度策略从所有视频源流媒体服务节点中确定一个最优的视频源流媒体服务节点；全局调度定服务节点向家庭流服务节点发送缓存下拉请求响应消息，缓存下拉请求响应消息包括最优的视频源流媒体服务节点的标识信息；家庭流服务节点根据缓存下拉请求响应消息向最优的视频源流媒体服务节点发送待缓存视频资源的缓存下拉请求获取待缓存视频资源。当然，其他进行能够快速从视频源流媒体服务节点获取待缓存视频资源的方式也包含在内。
在上述步骤S102中用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点具体可以是用户终端从电子节目服务节点获取电子节目信息，从电子节目信息中确定待缓存视频；发送待缓存视频的缓存控制信息给家庭流服务节点；即用户先从电子节目服务节点EPG的电子节目单获取具有哪些视频资源，然后进行待缓存视频的选择，可以选择自己喜欢的。这里的待缓存视频的选择还可以是随机选择或者根据用户设置的相关规则进行选择，例如热点视频，最新视频等，还可是系统配置好的条件进行视频的推荐。这里的系统配置好的条件是指根据用户平时所观看的视频进行推荐类同视频，或者整个系统大众的喜好等，当然也可是是随机推荐等。当然，其他提高用户体验度的方式也包含在内。
可选地，为了便于用户得知哪些视频资源是已经进行缓存的，避免用户进行重复缓存以及便于用户进行后续操作，具体流程为在家庭流服务节点根据控制信息从视频源流媒体服务节点获取待缓存视频资源，缓存待缓存视频资源后，还包括：家庭流服务节点通知电子节目服务节点对电子节目信息中待缓存视频对应的节目信息进行缓存标记。在待缓存视频资源进行缓存完成后，电子节目服务节点EPG进行电子节目单的更新标记。当然其他能够让用户终端进行得知以及便于后续操作的方式都包含在内。
可选地，为了提高视频资源的安全性，特别针对某些付费视频资源，为了提高对视频资源的版权保护，具体过程可以是家庭流服缓存待缓存视频资源包括：家庭流服务节点将待缓存视频资源缓存在加密缓存区中。
可选地，为了节约存储空间降低成本，家庭流服缓存待缓存视频资源之后还包括：家庭流服务节点判断待缓存视频资源是否老化，如果老化，进行自动删除。当然，其他可以降低存储成本的方式都包含在内。
可选地，为了提高对视频资源的保护，待缓存视频包括加密视频，缓存控制信息还包括待缓存视频对应的秘钥，播放请求包括视频资源对应的秘钥。即对加密视频需要对应的秘钥才能进行相应操作，这里的加密视频是指对于某些视频进行授权的视频资源。
可选地，为了提高边缓存边播放的功能，避免播放视频时缓存不好，具体过程为当用户终端正在播放待缓存视频时，家庭流服务节点根据控制信息从视频源流媒体服务节点获取待缓存视频资源的码率为待缓存视频资源的正常码率的下一档码率。这样就可以保证缓存良好的同时保证视频能够良好播放，提高用户体验度。当然，其他可以让视频资源缓存和播放良好进行方式也包含在内。
可选地，为了提高获取视频资源的效率，具体过程可以是家庭流服务节点根据控制信息从视频源流媒体服务节点获取待缓存视频资源的方式包括：家庭流服务节点根据控制信息从视频源流媒体服务节点分片从获取待缓存视频资源对应的分片视频资源，获取完整后，将分片视频资源聚合成完整的视频资源。当然，其他能够提高视频资源的获取效率的方式也包含在内。
实施例二：
本实施例的网络视频播放方法，主要包括以下组件：分布式EPG组件也即电子节目服务节点的一种示例(简称EPG)、全局重定向服务节点(简称GSLB，Global Server Load Balancing)、CDN流服务节点即频源流媒体服务节点一种示例(简称Node)、用户终端设备(简称UE，User Equipment)、HomeCDN设备即家庭流服务节点一种示例(简称HomeCDN)，其中HomeCDN设备又包含控制模块(Home Control，简称Home-C)、服 务模块(Home Service，简称Home-S)，内置磁盘空间划分(缓存加密区，简称Cache；存储区，简称Storage)；具体过程如图2所示，包括：
步骤S201：启动HomeCDN设备和用户智能终端设备UE，分别接入用户家庭网络实现智能监测及挂载；
可选地，在用户智能终端设备UE上安装HomeCDN客户端软件，通过用户终端配置界面配置HomeCDN设备信息之后，用户终端自动监测到HomeCDN设备与其建立网络连接。通过用户终端UE配置HomeCDN业务参数，配置数据自动同步至HomeCDN设备。
步骤S202：用户终端UE携带HomeCDN业务参数向EPG发起登录请求；
步骤S203：各EPG在用户登录时记录用户终端UE所携带的登录配置，按照用户HomeCDN配置，将缓存内容列表及GSLB信息发送到用户终端设备UE；
步骤S204：用户终端UE接收到EPG消息，解析内容列表和GSLB信息，将消息发送给HomeCDN控制层软件Home-C模块，由Home-C模块生成缓存任务，写入HomeCDN本地小型数据库当中；Home-C模块根据HomeCDN缓存时间，定时选择缓存任务发送给HomeCDN流媒体服务软件Home-S模块；
步骤S205：Home-S模块收到缓存任务，向GSLB发起缓存内容缓存下拉请求；
步骤S206：GSLB收到Home-S的缓存下拉请求之后，按照HomeCDN内容缓存调度策略原则获取最优流服务Node，向Home-S返回缓存下拉响应；
步骤S207：Home-S收到GSLB返回的缓存下拉响应之后，向源流服务Node发起缓存下拉请求；
步骤S208：内容源流服务Node收到来自Home-S的缓存下拉请求之后，开始提供内容分片缓存下拉服务；
步骤S209：Home-S缓存下拉完成之后，通知Home-C模块，由Home-C模块更新本地缓存内容的状态；
步骤S210：Home-C定时整合内容缓存状态，向归属EPG上报内容缓存结果。EPG收到内容缓存结果，更新页面缓存状态，置为缓存成功；
步骤S211：针对已缓存的内容，当该用户在EPG页面发起点播的时候，EPG返回给UE的播放URL中携带特殊参数，用于标记支持本地HomeCDN播放；
步骤S212：用户终端UE直接向本地HomeCDN发起播放请求，播放本地缓存内容；
步骤S213：本地HomeCDN系统Home-S模块收到播放请求，提供本地缓存区内容播放服务。
本实施例将CDN系统部分业务机制的控制权释放给用户，用以实现CDN热点内容及新内容的Home化控制。充分利用家用网络空闲时间，将CDN热点片源预缓存至用户家中，将网络媒体访问对宽带速度的即时性依赖降到最低，使得CDN用户在家用宽带成本既定的情况下，也可以享受到新上线内容及热点媒体的安全加速与流畅点播，同时还可以大幅提升家用宽带网络的利用率。
值得注意的是，本实施例中的HomeCDN设备：承载CDN业务控制软件、流媒体服务软件以及小型数据库软件，能够接收用户终端消息以及记录内容缓存列表，根据用户终端配置信息，自动生成内容缓存任务，定时从CDN节点预缓存CDN内容，能够为用户提供大容量的片源缓存功能和媒体安全访问功能。其内置磁盘空间分为缓存加密区和存储区，并能够根据用户终端下发的配置划分空间大小，其中缓存加密区用于存储已加密的缓存分片，数据对外不可见。HomeCDN内置加密算法，可支持将缓存区的加密分片拷贝至存储区进行解密、聚合归档以及USB对外拷贝功能。此外，该设备还支持缓存内容的自主老化，以及PC机客户端软件管理。
用户智能终端设备：作为家用终端设备，支持家庭点直播业务。能够 通过安装HomeCDN客户端软件，监测并连接管理HomeCDN设备。能够监测HomeCDN设备的启停，向用户直观展示HomeCDN设备的界面配置操作，并将用户在终端上的配置信息同步到HomeCDN设备，如：是否开启推荐模式、TOP阈值、缓存开启时间段、缓存老化时间、一键清理、是否开启在线缓存、磁盘空间分配及检测等配置项。能够接收EPG内容缓存列表，解析EPG消息，并将其下发到HomeCDN。
EPG设备：采用分布式组网模式，根据用户智能终端的登录参数向归属在本EPG下的用户终端下发CDN内容播放列表、内容推荐信息或订购信息。此外，EPG还以界面菜单的形式直观地向用户展示HomeCDN内容缓存状态，并向用户提供各种在线订购业务。
GSLB全局调度服务节点：采集CDN流服务节点的性能数据，为用户提供重定向服务。解析来自用户HomeCDN的内容缓存请求，根据内容分布数据和HomeCDN缓存调度策略返回一个性能最优的内容源流服务节点，为用户提供一种快速精确的内容加密下拉机制。
CDN流服务节点：作为CDN的能力层设备，提供CDN内容存储功能以及点直播流服务功能，向HomeCDN设备提供内容缓存下拉或回源服务，并向GSLB实时上报节点性能。
实施例三：
本实施例的网络视频播放方法，如图3所示，开启HomeCDN在线缓存之后，可以实现HomeCDN的边拉边放业务，为用户的后期重播操作提供一种快速、便捷通道，在某种程度上也可以提高播放速率。主要包括以下步骤：
步骤S301：用户在终端UE上开启在线即时缓存功能；
步骤S302：用户终端UE向归属EPG发起内容点播请求时，携带已开启在线缓存控制参数；
步骤S303：EPG向用户终端UE返回播放URL，携带内容信息、GSLB 信息以及HomeCDN本地播放标记参数；
步骤S304：用户终端UE直接向本地HomeCDN发起播放请求；
步骤S305：本地HomeCDN在没有内容的情况下，由Home-S直接向GSLB发起缓存下拉请求；
步骤S306：GSLB根据HomeCDN缓存调度策略，选取一个最优的流服务节点，向Home-S模块返回缓存下拉响应；
步骤S307：Home-S收到GSLB的缓存下拉响应之后，到指定的CDN流服务节点获取内容分片。HomeCDN在无缓存情况下，当用户UE进行初始播放或者定位播放时，向GSLB每一次的分片请求中都携带HomeCDN设备类型；
步骤S308：CDN流服务节点在每次收到HomeCDN请求时，如果判断终端设备类型为HomeCDN，则直接提供低一档码率的分片文件，用于提升终端缓存效率，后续分片以正常码率提供；
步骤S309：用户UE在本地HomeCDN上实现在线边拉边放功能。内容缓存数据保存在加密缓存区，根据HomeCDN配置定期自动老化。
本实施例中将CDN内容预下推机制的控制权释放给用户，实现了CDN新内容及热点内容的Home化控制，提高了内容缓存数据的分发效率。用户在家用终端上安装HomeCDN客户端软件，自主管理HomeCDN设备，自主决定片源的缓存时机，在用户上班时间及夜间休息时间也可以充分利用已付费的家庭网络，大幅度提升了家用宽带的利用率，将网络媒体访问对宽带速度的即时性依赖降到了最低，能够提升用户对热点内容及新上线内容的流畅点播体验。同时，将HomeCDN磁盘分为缓存加密区和存储区，引入聚合归档机制更容易满足用户播放需求以及下载需求，能够保障用户隐私、内容版权以及系统安全。即启动HomeCDN设备，将其接入用户家庭网络。启动用户智能终端设备，接入用户家庭网络。在用户智能终端设备上安装HomeCDN客户端软件，通过用户终端配置界面配置HomeCDN设备信息之后，用户终端能够自动监测本局域网内的 HomeCDN设备，并与其建立网络连接。后续通过用户终端界面配置HomeCDN业务参数，可自动同步数据至HomeCDN设备。各EPG在用户登录时记录用户终端UE所携带的登录配置，按照用户HomeCDN配置，将缓存内容列表及GSLB信息发送到用户终端设备。
用户终端接收到EPG消息，解析内容列表和GSLB信息，将消息发送给HomeCDN控制层软件，由控制层软件生成缓存任务，写入HomeCDN本地小型数据库当中。
HomeCDN流媒体服务软件，根据业务配置，定时查询内容缓存任务，向GSLB发起内容缓存下拉请求。GSLB收到HomeCDN的缓存下拉请求之后，按照HomeCDN缓存内容调度策略进行调度，查询一个内容源流服务节点，向HomeCDN返回缓存下拉响应。HomeCDN收到GSLB返回的缓存下拉响应之后，向GSLB返回的内容源流服务节点发起缓存下拉请求。内容源流服务节点收到来自HomeCDN的缓存下拉请求之后，开始提供内容分片下拉服务。HomeCDN将缓存后的内容分片保存在缓存加密区，缓存下拉成功之后，更新本地缓存内容的状态，HomeCDN控制软件定时向归属EPG上报内容缓存状态。缓存加密区的内容分片对外不可见。
EPG收到HomeCDN的内容缓存结果上报，更新缓存状态，下拉成功的置为缓存成功，并在EPG页面进行展示。针对已缓存的内容，当该用户在EPG页面发起点播的时候，EPG返回的播放URL中携带特殊参数，用于标记本地HomeCDN缓存播放。用户终端直接向本地HomeCDN私网IP地址发起播放请求，HomeCDN播放本地加密区缓存片源。此外，HomeCDN对于本地已缓存的内容可以发起自主老化，老化成功之后可由HomeCDN控制软件向归属EPG上报老化结果。
实施例四：
本实施例的网络视频播放方法，如图4所示，本实施还通过增加推荐引擎模块，如图4中的模块分别表示：CDN统计服务节点(简称CDNSTAT， CDN Statistics)、CDN推荐引擎(简称CDNRE，CDN Recommendations Engine)、内容管理平台(简称CMS，Content Management System)、CDN业务配置门户(简称为CDNWEB)、CDN业务管理平台(简称CDNM，CDN Manager)。该实施方案通过在内容推荐流程中引入秘钥机制，更容加保障了用户隐私、内容版权以及系统安全。另外，还将推荐内容分布数据推送到GSLB，不但实现了对节点性能的精确控制以及推荐内容的精确调度，也不会因内容数据量过大带来性能压力，由GSLB全局管控，在一定程度上还可以均衡HomeCDN内容缓存与用户点直播服务给流服务节点带来的性能冲突。主要包括以下步骤：
步骤S401：统计服务节点CDNSTAT采集全网CDN话单数据，根据话单信息统计出CDN热点数据，并将热点数据反馈给推荐引擎CDNRE，作为热点推荐；
步骤S402：内容管理平台CMS将最新上线的CDN内容，反馈给CDNRE，作为新片数据推荐；
步骤S403：CDNRE按照自身的TOP榜单配置参数，审核热点数据和新片数据，预估内容热点，整合本推荐周期内的推荐数据。
步骤S404：CDNR向分布式EPG系统和CDNM发送推荐消息，含推荐秘钥和推荐数据；
可选地，还包括EPG收到推荐消息之后，更新推荐秘钥，并将内容推荐数据同步至本地数据库。
步骤S405：CDNM收到内容推荐消息之后，更新本地推荐秘钥，并向GSLB发送秘钥更新通知；
可选地，还包括同时CDNM根据内容推荐数据查询在CDN节点的内容分布信息，将推荐内容分布信息打包同步至GSLB调度服务节点。后续在CDNM内容分布信息变化时主动向GSLB发起数据变更请求。
步骤S406：通过CDNWEB页面配置HomeCDN内容缓存调度策略，配置数据自动同步至GSLB调度服务节点；
步骤S407：GSLB调度服务节点进行性能采集和推荐秘钥同步；
可选地，GSLB调度服务节点获取到推荐秘钥、HomeCDN缓存调度策略、推荐内容分布信息之后，分别将其同步至本地内存数据库。同时，GSLB将推荐秘钥通过性能采集接口发送给各流服务节点。
步骤S408：各EPG在用户登录时记录用户终端UE所携带的登录配置；
可选地，是否接收推荐功能、所需要的TOP内容数等重要参数。EPG在用户终端UE登录或者内容推荐信息发生变化时，按照用户终端配置信息，将推荐数据、GSLB信息及推荐秘钥推送至归属在本EPG下的终端设备UE。
步骤S409：用户将推荐信息以及秘钥和推荐任务发送给HomeCDN服务节点；
可选地，用户终端UE接收到EPG的推荐数据、GSLB信息及推荐秘钥之后，将消息发送给HomeCDN服务节点Home-C模块，由Home-C模块写入本地小型数据库当中；这里的推荐信息为缓存控制信息的一种示例。Home-C模块根据用户终端UE配置的缓存开启时间，定时选择缓存任务发送给Home-S模块；
步骤S410：Home-S模块收到缓存任务，采用内置加密算法按照推荐秘钥生成加密串，向GSLB发起推荐内容缓存下拉请求，请求中携带加密串；
步骤S411：GSLB收到Home-S的缓存下拉请求之后，根据本地推荐秘钥校验下拉请求中的加密串，校验成功，则开始处理下拉请求，校验失败，则直接返回失败；
可选地，针对校验成功的，GSLB查询推荐内容分布信息，按照HomeCDN内容缓存调度策略原则获取最优Node，向Home-S返回缓存下拉响应；针对VIP客户，GSLB支持在内容分布信息查询失败或者节点异常的情况下，直接返回源站提供回源下载服务。
步骤S412：Home-S收到GSLB返回的缓存下拉响应之后，携带加密串，向源流服务节点Node发起缓存下拉请求；
步骤S413：内容源流服务节点Node收到来自Home-S的缓存下拉请求之后，根据本地推荐秘钥校验下拉请求中的加密串，校验成功，则开始提供内容分片缓存下拉服务，校验失败，则直接返回失败；
步骤S414：Home-S将下拉的内容分片保存在缓存加密区，在内容缓存下拉完成之后，通知Home-C模块，由Home-C模块更新本地数据中推荐内容的状态；
步骤S415：Home-C定时整合缓存任务结果，向归属EPG上报内容推荐结果，EPG收到内容推荐结果，更新页面推荐状态，置为推荐成功；
步骤S416：针对推荐成功的内容，当该用户在EPG页面发起点播的时候，EPG返回的播放URL中携带特殊参数，用于标记本地HomeCDN加密区缓存播放；
步骤S417：用户终端UE直接向本地HomeCDN发起播放请求；
步骤S418：本地HomeCDN系统Home-S模块收到播放请求，根据本地推荐秘钥解析URL加密串，播放本地缓存片源。
值得注意的是，本实施例中的内容为待缓存视频资源的一种示例。
实施例五：
本实施例的网络视频播放方法，如图5所示，本实施还能够将缓存加密区的内容拷贝至存储区，将缓存分片解密、聚合为整体文件，满足用户的重播需求,并对外提供内容拷贝功能。该方案能够使得HomeCDN系统更容易控制CDN内容的所有权，在一定程度上还可以满足VIP用户对热点片源的下载需求。内容按分片先缓存再聚合，可以提高HomeCDN内容的下载效率。主要包括以下步骤：
步骤S501：推荐引擎CDNRE向分布式EPG组件下发片源解禁列表；
步骤S502：EPG收到解禁通知，将内容列表同步至本地，并解析内容列表；
具体还包括针对用户已缓存成功的内容，EPG上可以展示HOME片源归档订购菜单。
步骤S503：用户批量选择已缓存成功的片源，点击‘HOME归档’按钮，触发HomeCDN缓存片源在线归档；
具体还包括EPG将HomeCDN内容归档列表下发给用户终端UE，下发请求中携带片源解密口令。
步骤S504：用户终端UE收到缓存片源归档请求之后，将其下发给HomeCDN控制层模块Home-C；
步骤S505：Home-C模块解析缓存片源归档请求，入库并定时扫描，通知到Home-S模块；
具体还包括Home-S模块收到缓存片源归档任务，将加密区的缓存分片拷贝至存储区，将缓存分片解密、聚合为整体内容文件，完成缓存片源归档，并通知到Home-C模块。
步骤S506：Home-C模块更新本地数据库中的内容状态，定时向EPG上报HomeCDN归档结果；
步骤S507：EPG收到HomeCDN归档结果，更新内容推荐状态；
具体还包括针对归档成功的内容，用户可通过PC机USB连接HomeCDN将其从存储区拷出。
步骤S508：用户终端UE向EPG发起HomeCDN归档内容点播；
步骤S509：EPG向用户终端UE返回归档内容点播响应；
具体归档内容点播响应包括的服务URL中携带特殊参数，用于标记本地HomeCDN归档内容播放。此外，在服务URL中额外附加GSLB信息。
步骤S510：用户终端UE收到EPG返回的服务URL，直接向本地 HomeCDN发起播放请求；
步骤S511：Home-S解析播放请求，播放本地存储区的归档片源。当存储区的归档内容已被删掉时，Home-S可直接向用户终端UE返回GSLB的回源播放URL。
实施例六：
本实施例提供的用户终端600,如图6所示，包括第一连接模块601、发送模块602和播放模块603：其中，第一连接模块601设置为与家庭流服务节点700建立网络连接；发送模块602设置为发送待缓存视频资源的缓存控制信息给家庭流服务节点700；缓存控制消息包括待缓存视频资源的标识信息；播放模块603设置为发送播放请求给家庭流服务节点700获取待缓存视频资源进行视频播放。
本实施例提供的家庭流服务节点700,如图7所示，包括第二连接模块701、接收模块702和缓存模块703：其中，第二连接模块701设置为与用户终端600建立网络连接；接收模块702设置为接收用户终端600发送的待缓存视频资源的缓存控制信息；缓存控制消息包括待缓存视频资源的标识信息；
缓存模块703设置为根据控制信息从视频源流媒体服务节点获取待缓存视频资源，缓存待缓存视频资源。
本实施例提供的网络视频播放系统,如图8所示，包括用户终端600和家庭流服务节点700：其中，用户终端600设置为与家庭流服务节点700建立网络连接；用户终端600还设置为发送待缓存视频资源的缓存控制信息给家庭流服务节点700；缓存控制消息包括待缓存视频资源的标识信息；家庭流服务节点700设置为根据控制信息从视频源流媒体服务节点获取待缓存视频资源，缓存待缓存视频资源；用户终端600还设置为发送播放请求给家庭流服务节点700获取待缓存视频资源进行视频播放。
本实施例提供的网络视频播放系统,如图9所示，还包括全局调度定服 务节点800，其中，家庭流服务节点700还设置为根据缓存控制信息生向全局调度定服务节点800发送待缓存视频资源的缓存下拉请求；全局调度定服务节点800设置为根据预设调度策略从所有视频源流媒体服务节点中确定一个最优的视频源流媒体服务节点；全局调度定服务节点800还设置为向家庭流服务节点700发送缓存下拉请求响应消息，缓存下拉请求响应消息包括最优的视频源流媒体服务节点的标识信息；家庭流服务节点700还设置为根据缓存下拉请求响应消息向最优的视频源流媒体服务节点发送待缓存视频资源的缓存下拉请求获取待缓存视频资源。
本实施例提供的网络视频播放系统,如图10所示，还包括电子节目服务节点900，其中，用户终端600还设置为从电子节目服务节点900获取电子节目信息，从电子节目信息中确定待缓存视频；发送待缓存视频的缓存控制信息给家庭流服务节点700；家庭流服务节点700还设置为在家庭流服务节点700根据控制信息从视频源流媒体服务节点获取待缓存视频资源，缓存待缓存视频资源后，通知电子节目服务节点900对电子节目信息中待缓存视频对应的节目信息进行缓存标记。
可选地，待缓存视频包括加密视频，缓存控制信息还包括待缓存视频对应的秘钥，播放请求包括视频资源对应的秘钥。
可选地，当用户终端600正在播放待缓存视频时，家庭流服务节点700根据控制信息从视频源流媒体服务节点获取待缓存视频资源的码率为待缓存视频资源的正常码率的下一档码率。
可选地，家庭流服务节点700还设置为根据控制信息从视频源流媒体服务节点分片从获取待缓存视频资源对应的分片视频资源，获取完整后，将分片视频资源聚合成完整的视频资源。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质中存储有执行指令，该执行指令用于执行上述的方法。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random  Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件完成，上述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。本发明不限制于任何特定形式的硬件和软件的结合。
以上实施例仅用以说明本发明的技术方案而非限制，仅仅参照较佳实施例对本发明进行了详细说明。本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围当中。
工业实用性
如上所述，本发明实施例提供的一种网络视频播放方法和系统及用户终端、家庭流服务节点具有以下有益效果：用户终端通过预先对待缓存视频资源进行家庭流服务节点的缓存，播放视频时从家庭流服务节点区获取视频资源进行播放，能够避免从视频资源存储于CDN运营商网络系统在高峰使用期导致高画质卡顿的问题，将CDN热点视频资源预缓存至用户的家庭流服务节点中，将网络媒体访问对宽带速度的即时性依赖降到最低，使得CDN用户在家用宽带成本既定的情况下，也可以享受到新上线内容及热点媒体的安全加速与流畅点播，同时还可以大幅提升家用宽带网络的利用率。

Claims (18)

  1. 一种网络视频播放方法，包括：
    用户终端与家庭流服务节点建立网络连接；
    所述用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点，所述缓存控制消息包括所述待缓存视频资源的标识信息；
    所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源；
    所述用户终端发送播放请求给所述家庭流服务节点获取所述待缓存视频资源进行视频播放。
  2. 如权利要求1所述的网络视频播放方法，其中，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源包括：
    所述家庭流服务节点根据所述缓存控制信息生向全局调度定服务节点发送待缓存视频资源的缓存下拉请求；
    所述全局调度定服务节点根据预设调度策略从所有视频源流媒体服务节点中确定一个最优的视频源流媒体服务节点；
    所述全局调度定服务节点向所述家庭流服务节点发送缓存下拉请求响应消息，所述缓存下拉请求响应消息包括最优的视频源流媒体服务节点的标识信息；
    所述家庭流服务节点根据所述缓存下拉请求响应消息向最优的视频源流媒体服务节点发送待缓存视频资源的缓存下拉请求获取所述待缓存视频资源。
  3. 如权利要求1所述的网络视频播放方法，其中,
    所述用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点包括：所述用户终端从电子节目服务节点获取电子节目信息，从所述电子节目信息中确定待缓存视频；发送所述待缓存视频的缓存控制信息给家庭流服务节点；
    在所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源后，还包括：所述家庭流服务节点通知电子节目服务节点对电子节目信息中所述待缓存视频对应的节目信息进行缓存标记。
  4. 如权利要求1所述的网络视频播放方法，其中,所述家庭流服缓存所述待缓存视频资源包括：所述家庭流服务节点将所述待缓存视频资源缓存在加密缓存区中。
  5. 如权利要求1所述的网络视频播放方法，其中,所述家庭流服缓存所述待缓存视频资源之后还包括：所述家庭流服务节点判断所述待缓存视频资源是否老化，如果老化，进行自动删除。
  6. 如权利要求1-5任一项所述的网络视频播放方法，其中,所述待缓存视频包括加密视频，所述缓存控制信息还包括所述待缓存视频对应的秘钥，所述播放请求包括所述视频资源对应的秘钥。
  7. 如权利要求1-5任一项所述的网络视频播放方法，其中,当所述用户终端正在播放所述待缓存视频时，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源的码率为所述待缓存视频资源的正常码率的下一档码率。
  8. 如权利要求1-5任一项所述的网络视频播放方法，其中，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源的方式包括：所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点分片从获取所述待缓存视频资源对应的分片视频资源，获取完整后，将分片视频资源聚合成完整的视频资源。
  9. 一种网络视频播放方法，包括：
    用户终端与家庭流服务节点建立网络连接；
    所述用户终端发送待缓存视频资源的缓存控制信息给家庭流服务节点；所述缓存控制消息包括所述待缓存视频资源的标识信息；
    所述用户终端发送播放请求给所述家庭流服务节点获取所述待缓 存视频资源进行视频播放。
  10. 一种网络视频播放方法，包括：
    家庭流服务节点与用户终端建立网络连接；
    所述家庭流服务节点接收所述用户终端发送的待缓存视频资源的缓存控制信息；所述缓存控制消息包括所述待缓存视频资源的标识信息；
    所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源。
  11. 一种网络视频播放系统，其中，包括用户终端和家庭流服务节点：
    所述用户终端设置为与家庭流服务节点建立网络连接；
    所述用户终端还设置为发送待缓存视频资源的缓存控制信息给家庭流服务节点，所述缓存控制消息包括所述待缓存视频资源的标识信息；
    所述家庭流服务节点设置为根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源；
    所述用户终端还设置为发送播放请求给所述家庭流服务节点获取所述待缓存视频资源进行视频播放。
  12. 如权利要求11所述的网络视频播放系统，其中，还包括全局调度定服务节点，
    所述家庭流服务节点还设置为根据所述缓存控制信息生向全局调度定服务节点发送待缓存视频资源的缓存下拉请求；
    所述全局调度定服务节点设置为根据预设调度策略从所有视频源流媒体服务节点中确定一个最优的视频源流媒体服务节点；
    所述全局调度定服务节点还设置为向所述家庭流服务节点发送缓存下拉请求响应消息，所述缓存下拉请求响应消息包括最优的视频源 流媒体服务节点的标识信息；
    所述家庭流服务节点还设置为根据所述缓存下拉请求响应消息向最优的视频源流媒体服务节点发送待缓存视频资源的缓存下拉请求获取所述待缓存视频资源。
  13. 如权利要求11所述的网络视频播放系统，其中，还包括电子节目服务节点，所述用户终端还设置为从电子节目服务节点获取电子节目信息，从所述电子节目信息中确定待缓存视频；发送所述待缓存视频的缓存控制信息给家庭流服务节点；
    所述家庭流服务节点还设置为在所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源后，通知电子节目服务节点对电子节目信息中所述待缓存视频对应的节目信息进行缓存标记。
  14. 如权利要求11-13任一项所述的网络视频播放系统，其中，所述待缓存视频包括加密视频，所述缓存控制信息还包括所述待缓存视频对应的秘钥，所述播放请求包括所述视频资源对应的秘钥。
  15. 如权利要求11-13任一项所述的网络视频播放系统，其中，当所述用户终端正在播放所述待缓存视频时，所述家庭流服务节点根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源的码率为所述待缓存视频资源的正常码率的下一档码率。
  16. 如权利要求11-13任一项所述的网络视频播放系统，其中，所述家庭流服务节点还设置为根据所述控制信息从视频源流媒体服务节点分片从获取所述待缓存视频资源对应的分片视频资源，获取完整后，将分片视频资源聚合成完整的视频资源。
  17. 一种用户终端，包括第一连接模块、发送模块和播放模块：
    所述第一连接模块设置为与家庭流服务节点建立网络连接；
    所述发送模块设置为发送待缓存视频资源的缓存控制信息给家庭流服务节点；所述缓存控制消息包括所述待缓存视频资源的标识信息；
    所述播放模块设置为发送播放请求给所述家庭流服务节点获取所述待缓存视频资源进行视频播放。
  18. 一种家庭流服务节点，包括第二连接模块、接收模块和缓存模块：
    所述第二连接模块设置为与用户终端建立网络连接；
    所述接收模块设置为接收所述用户终端发送的待缓存视频资源的缓存控制信息；所述缓存控制消息包括所述待缓存视频资源的标识信息；
    所述缓存模块设置为根据所述控制信息从视频源流媒体服务节点获取所述待缓存视频资源，缓存所述待缓存视频资源。
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