WO2016107197A1 - 一种网络节目的录制方法、装置、系统以及录制节目的播放方法、装置 - Google Patents

一种网络节目的录制方法、装置、系统以及录制节目的播放方法、装置 Download PDF

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Publication number
WO2016107197A1
WO2016107197A1 PCT/CN2015/087942 CN2015087942W WO2016107197A1 WO 2016107197 A1 WO2016107197 A1 WO 2016107197A1 CN 2015087942 W CN2015087942 W CN 2015087942W WO 2016107197 A1 WO2016107197 A1 WO 2016107197A1
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Prior art keywords
file
cdn
program
request message
recording
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PCT/CN2015/087942
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English (en)
French (fr)
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杨晟
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中兴通讯股份有限公司
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Publication of WO2016107197A1 publication Critical patent/WO2016107197A1/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]
    • H04N21/20—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
    • H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
    • 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

Definitions

  • the present application relates to, but is not limited to, the field of CDN (Content Delivery Network) technology, and in particular, to a method, an apparatus, a system for recording a network program, and a method and a device for playing a recorded program.
  • CDN Content Delivery Network
  • the CDN system is widely used as a system for caching video, audio, pictures and web pages in the network.
  • HLS Http Live Streaming, protocol for real-time streaming
  • TVOD True Video On Demand
  • NPVR Network Personal Video Recorder
  • IPTV and OTT TV The current personal recording process in IPTV and OTT TV is that, firstly, the channel has been recorded successfully through the normal program list, and the user operates on the set top box to archive the recorded program as a personal recorded program, and the CDN will record the recorded program. Separate storage, individual users recording the same program on the CDN will only save one copy, this way effectively guarantees the validity of the storage, there is no waste of redundant storage space.
  • personal recording for network program customization cannot be realized without paying off part of the storage space.
  • the embodiment of the invention provides a method, a device and a system for recording a network program, and a method and a device for playing a recorded program, which can realize customized recording of a network program without losing a large amount of storage space.
  • an embodiment of the present invention provides a method for recording a network program, including: a content distribution network CDN channel server downloads a fragment TS file of a program from a channel source station; and the CDN channel server receives a recording request message sent by the user terminal.
  • the recording request message includes a start and end time of the recorded program; the CDN channel server determines, according to the recording request message, a TS file to be recorded in the downloaded TS file, and generates a corresponding index file.
  • the CDN channel server downloads the fragmented TS file from the channel source station, including: downloading an index file of the program from the channel source station, and downloading a corresponding TS file according to the index file.
  • the method further includes: storing the TS file in the distributed file system DFS.
  • index file is an M3U8 file.
  • the method further includes: deleting, by the CDN channel server, the unrecorded TS file according to the delete recording request message sent by the user terminal.
  • the method further includes: the CDN channel server periodically deleting the TS file that is not recorded by the preset time period.
  • the embodiment of the present invention further provides a network program recording device, which is disposed on a CDN channel server, and includes: a downloading module, configured to download a fragmented TS file of the program from the channel source station; and receive a recording request module,
  • the receiving request message is sent to receive the recording request message, where the recording request message includes a start and end time of the recorded program, and the generating indexing module is configured to determine, in the downloaded TS file, that the recording is required according to the recording request message.
  • the TS file and generate the corresponding index file.
  • the recording module includes: a first download unit, configured to download an index file of the program from the channel source station; and a second download unit configured to download the corresponding file according to the index file TS file.
  • the apparatus further comprises: a storage module configured to store the TS file in a distributed file system DFS.
  • index file is an M3U8 file.
  • the device further includes: a first deleting module, configured to delete the unrecorded TS file according to the delete recording request message sent by the user terminal.
  • a first deleting module configured to delete the unrecorded TS file according to the delete recording request message sent by the user terminal.
  • the device further includes: a second deletion module, configured to periodically delete the TS file that is not recorded after the preset time period.
  • a second deletion module configured to periodically delete the TS file that is not recorded after the preset time period.
  • an embodiment of the present invention further provides a method for playing a recorded program, including: a CDN user server receiving a play request message sent by a user terminal, where the play request message includes a start and end time of the recorded program; The CDN user server obtains a corresponding index file according to the play request message, and sends the corresponding index file to the user terminal; the CDN user server receives the request for acquiring a TS file sent by the user terminal, where the TS file is Corresponding to the index file; the CDN user server reads the corresponding TS file according to the request for acquiring the TS file, and sends the corresponding TS file to the user terminal.
  • the CDN user server obtains the corresponding index file according to the play request message, and the method includes: querying, by the CDN user server, the corresponding index file storage path information according to the play request message, and notifying the user Receiving, by the CDN user server, the index file request information sent by the user terminal, where the index file is determined by the terminal according to the storage path information; and acquiring according to the index file request information The index file.
  • index file is an M3U8 file.
  • the embodiment of the present invention further provides a playback device for recording a program, which is disposed on a CDN user server, and includes: a receiving play request module, configured to receive a play request message sent by the user terminal, where the play request The message includes the start and end time of the requested broadcast program; the obtaining index module is configured to acquire a corresponding index file according to the play request message, and send the file to the user terminal; and the third receiving module is configured to receive the user terminal.
  • Sending a request for acquiring a TS file wherein the TS file is corresponding to the index file;
  • a reading module It is set to read the corresponding TS file according to the request for acquiring the TS file and send it to the user terminal.
  • the obtaining the indexing module comprising: a querying unit, configured to query the corresponding index file storage path information according to the play request message, and notify the user terminal; and receive an index requesting unit, and set the receiving location The index file request information sent by the user terminal, wherein the index file is determined by the terminal according to the storage path information; and the acquiring unit is configured to acquire the index file according to the index file request information.
  • index file is an M3U8 file.
  • an embodiment of the present invention further provides a network program recording system, including: a CDN channel server CHANNEL and a distributed file system DFS;
  • the CDN channel server CHANNEL includes: a downloading module, configured to download a fragmented TS file of the program to the channel source station; and a receiving recording requesting module, configured to receive a recording request message sent by the user terminal, where the recording request message is The start and end time of the recorded program is generated, and the indexing module is configured to determine, according to the recording request message, a TS file to be recorded in the downloaded TS file, and generate a corresponding index file;
  • a distributed file system DFS configured to store the TS file.
  • the system further includes: a CDN management platform IAM, configured to forward the recording request message sent by the user terminal to the CDN channel server.
  • a CDN management platform IAM configured to forward the recording request message sent by the user terminal to the CDN channel server.
  • the CDN management platform IAM is further configured to notify the user terminal of the process status information.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for performing the recording and playing method of the network program.
  • the CDN channel server downloads the fragmented TS file of the program from the channel source station; the CDN channel server receives the recording request message sent by the user terminal, where the recording request message includes the start and end time information of the recorded program; the CDN channel The server determines the TS file to be recorded in the downloaded TS file according to the recording request message, and generates a corresponding index file.
  • the user terminal can record the network program in any time period without being limited to the program list specified by the system.
  • FIG. 1 is a flowchart of a network program recording method according to an embodiment of the present invention.
  • FIG. 2 is a flow chart of downloading a TS file by a CDN channel server according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a network program recording application according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a network program recording process according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a TS file rollback according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of NPVR deletion according to an embodiment of the present invention.
  • FIG. 7 is a block diagram 1 of a structure of a network program recording apparatus according to an embodiment of the present invention.
  • FIG. 8 is a block diagram 2 of a network program recording apparatus according to an embodiment of the present invention.
  • FIG. 9 is a flowchart 1 of a method for playing a recorded program according to an embodiment of the present invention.
  • FIG. 10 is a second flowchart of a method for playing a recorded program according to an embodiment of the present invention.
  • FIG. 11 is a block diagram 1 of a structure of a recorded program playing device according to an embodiment of the present invention.
  • FIG. 12 is a block diagram 2 of a structure of a recorded program playing device according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a network program recording system according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for recording a network program according to an embodiment of the present invention. As shown in FIG. 1, the method includes:
  • the CDN channel server downloads a fragment TS file of the program from the channel source station.
  • the CDN channel server receives a recording request message sent by the user terminal, where the recording request message includes start and end time information of the recorded program.
  • the CDN channel server determines, according to the recording request message, a TS file to be recorded in the downloaded TS file, and generates a corresponding index file.
  • the CDN channel server downloads the fragmented TS file of the program from the channel source station; the CDN channel server receives the recording request message sent by the user terminal, where the recording request message includes the start and end time information of the recorded program; the CDN channel The server determines, according to the recording request message, the TS file to be recorded in the downloaded TS file, and generates a corresponding index file.
  • the user terminal can record the network program in any time period without being limited to the program list specified by the system.
  • the CDN channel server downloads the fragmented TS file from the channel source station, including: downloading an index file of the program from the channel source station; and downloading the corresponding TS file according to the index file.
  • the index file in this embodiment is an M3U8 file.
  • FIG. 2 is a flowchart of downloading a TS file by a CDN channel server according to an embodiment of the present invention. As shown in FIG. 2, the method includes:
  • the CDN management platform (IAM, Identity and Access Management, ie, identity and access management) initiates a channel creation request to the CDN channel server (CHANNEL).
  • IAM Identity and Access Management
  • CHANNEL CDN channel server
  • the CDN channel server (CHANNEL) notifies the IAM to receive the channel creation task in response to the channel creation request.
  • CHANNEL performs local processing of creating channels, increases channel data area, and processes preparations for channel download files.
  • CHANNEL reports a channel creation success message to the IAM.
  • the IAM receives a creation success message in response to the CHANNEL.
  • CHANNEL downloads the index M3U8 file and the TS fragment file from the channel source station, wherein CHANNEL first downloads the M3U8 file, and then downloads the TS file according to the index information in the M3U8 file.
  • the channel is a live broadcast stream, so after the channel is successfully created, according to the HLS protocol, CHANNEL periodically requests the M3U8 file and the TS file to be stored locally from the channel source station, or can be stored in the DFS (Distributed File System). .
  • DFS Distributed File System
  • the recording request message sent by the user terminal includes start and end time information of the recorded program, and further includes channel ID (Identity, ID) information and user ID information.
  • FIG. 3 is a flowchart of a network program recording application according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
  • STB Set Top Box, ie, user terminal
  • the most important application message includes the start time, end time, channel ID, and user ID of the NPVR.
  • S304 The IAM returns a response to the NPVR recording request after receiving the STB request.
  • S306 The IAM performs user NPVR function authentication, and the subsequent process is performed after the authentication succeeds.
  • the IAM sends an NPVR request to the CDN channel server CHANNEL, and the application message includes the start time, the end time, the user ID, and the NPVR program ID information of the NPVR.
  • CHANNEL after receiving the NPVR application, CHANNEL returns a response indicating that the application has been received.
  • CHANNEL queries the database whether the current record exists in the NPVR task table, and if it already exists, it is no longer inserted, and if not, inserts the application record into the NPVR task table. The status of the marked NPVR task is pending.
  • IAM shows the user that the NPVR application has been accepted and is being recorded.
  • FIG. 4 is a flowchart of a network program recording process according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:
  • CHANNEL periodically queries the NPVR recording task table.
  • the main query is the recording completion time and start time.
  • CHANNEL determines whether the current time has been completed according to the end time of the NPVR task. It became the recording of the channel TS during the NPVR time period. If the recording is not completed, it will not be processed. If the recording has been completed, the process of step S406 is started.
  • the channel TS has been recorded, and the time period information can be extracted in the TS file.
  • the CHANNEL determines which TS files need to be recorded according to the start time and the end time of the NPVR, and generates an M3U8 file corresponding to the TS file to be recorded.
  • the IAM shows the user that the NPVR recording has been completed.
  • FIG. 5 is a flowchart of a TS file rollback according to an embodiment of the present invention. As shown in FIG. 5, the process includes:
  • CHANNEL determines the maximum recording time when creating a channel. During the maximum time, the channel will record the complete fragmented TS file.
  • CHANNEL can process and generate the corresponding M3U8 file, and insert the TS file list information used by the NPVR into the NPVR recording TS file table of the database. (NPVR_TS table), the TS file is also recorded in the "NPVR recording TS file table", and the repeated TS file records are not repeatedly inserted into the database.
  • CHANNEL rolls back the process of recording files, and periodically queries the "NPVR recording TS file table" in the database to judge the TS files that do not exist in the table and exceed the recording time and delete them.
  • FIG. 6 is a flowchart of NPVR deletion according to an embodiment of the present invention. As shown in FIG. 6, the process includes:
  • the NPVR delete request message is sent from the STB to the IAM, and then sent from the IAM to the CDN channel server CHANNEL.
  • the request message also includes the start time, end time, channel ID, and user ID of the NPVR.
  • CHANNEL queries the time segment information of other NPVR tasks to find out the time period in which the NPVR does not overlap with other NPVR tasks, and the time is not coincident.
  • the segment determines the TS file list, deletes the corresponding TS file record in the NPVR_TS table, and deletes the NPVR information in the NPVR task table of the database.
  • the embodiment of the present invention further provides a network program recording device, which is disposed on a CDN channel server, the server includes a processor and a program storage device, and FIG. 7 is a block diagram of a network program recording device according to an embodiment of the present invention. As shown in Figure 7, the device includes:
  • the downloading module 702 is adapted to download a sliced TS file of the program from the channel source station;
  • the receiving recording request module 704 is adapted to receive a recording request message sent by the user terminal, where the recording request message includes start and end time information of the recorded program;
  • the generating indexing module 706 is adapted to determine, according to the recording request message, a TS file to be recorded in the downloaded TS file, and generate a corresponding index file.
  • the downloading module 702 downloads the fragmented TS file of the program from the channel source station; the receiving recording requesting module 704 receives the recording request message sent by the user terminal, where the recording request message includes the start and end time information of the recorded program; The generation indexing module 706 determines a TS file to be recorded in the downloaded TS file according to the recording request message, and generates a corresponding index file.
  • the user terminal can record the network program in any time period without being limited to the program list specified by the system.
  • FIG. 8 is a block diagram 2 of a network program recording apparatus according to an embodiment of the present invention.
  • the recording module 802 further includes: a first download unit 8002, which is applicable to a channel source station.
  • the index file M3U8 of the program is downloaded;
  • the second download unit 8004 is adapted to download the corresponding TS file according to the index file M3U8.
  • the apparatus further includes: a storage module 808 adapted to store the TS file in the distributed file system DFS.
  • the apparatus further includes: a first deletion module 810, configured to delete the unrecorded TS file according to the delete recording request message sent by the user terminal.
  • the apparatus may further include: a second deletion module 812 adapted to periodically delete the TS file that has not been recorded for more than a preset period of time.
  • the above two deletion modules can exist at the same time or can be separately set in the device.
  • FIG. 9 is a flowchart 1 of a method for playing a recorded program according to an embodiment of the present invention. As shown in FIG. 9, the method includes the following steps:
  • the CDN user server receives a play request message sent by the user terminal, where the play request message includes start and end time information of the recorded program.
  • the CDN user server acquires a corresponding index file according to the play request message, and sends the corresponding index file to the user terminal.
  • the CDN user server receives a request for acquiring a TS file sent by the user terminal, where the TS file is corresponding to the index file.
  • the CDN user server reads the corresponding TS file according to the request for acquiring the TS file, and sends the corresponding TS file to the user terminal.
  • the CDN user server receives the play request message sent by the user terminal, where the play request message includes start and end time information of the recorded program; the CDN user server acquires the corresponding index file according to the play request message, and sends Providing a user terminal; S906, the CDN user server receives the request for acquiring a TS file sent by the user terminal, wherein the TS file is corresponding to the index file; and S908, the CDN user server reads the corresponding TS file according to the request for acquiring the TS file. And sent to the user terminal.
  • the user terminal can record the network program and play it in any time period without being limited to the program list specified by the system.
  • FIG. 10 is a second flowchart of a method for playing a recorded program according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:
  • S1002 The user terminal (STB) initiates an HTTP request for NPVR play, and the HTTP request includes key information: NPVR start time, end time, channel ID, and user ID.
  • the CDN User Server After receiving the request, the CDN User Server (IAS) queries the path information of the M3U8 file according to the program start time, end time, and channel ID in the NPVR table of the database DB.
  • IAS CDN User Server
  • S1006 The IAS returns a redirect message of the STB, where the message includes the URL of the MBU8 file that the STB next requests.
  • the STB requests the IAS according to the URL of the M3U8 file.
  • the IAS obtains the M3U8 file from the distributed file system DFS according to the path of the M3U8 file.
  • IAS returns the M3U8 file to the STB.
  • the M3U8 file contains all the TS lists required by the STB next request.
  • the STB continuously requests the IAS to obtain the corresponding fragmented TS file according to the URL list of the TS.
  • the embodiment of the present invention further provides a playback device for recording a program, which is disposed on a CDN user server, and the server includes a processor and a program storage device.
  • 11 is a block diagram showing the structure of a recorded program playing device according to an embodiment of the present invention. As shown in FIG. 11, the device includes:
  • the receiving play requesting module 1102 is configured to receive a play request message sent by the user terminal, where the play request message includes start and end time information of the requested broadcast program, and the obtaining index module 1104 is adapted to obtain a corresponding message according to the play request message. Indexing the file and sending it to the user terminal; the third receiving module 1106 is adapted to receive the request for acquiring the TS file sent by the user terminal, wherein the TS file is corresponding to the index file; the reading module 1108 is adapted to obtain the data according to the The TS file requests, reads the corresponding TS file and sends it to the user terminal.
  • the receiving play requesting module 1102 receives the play request message sent by the user terminal, where the play request message includes the start and end time information of the requested broadcast program; the obtaining index module 1104 obtains the corresponding information according to the play request message. Indexing the file and sending it to the user terminal; the third receiving module 1106 receives the request for acquiring the TS file sent by the user terminal, wherein the TS file is corresponding to the index file; the reading module 1108 reads according to the request for acquiring the TS file. The corresponding TS file is sent to the user terminal.
  • the user terminal can record the network program and play it in any time period without being limited to the program list specified by the system.
  • FIG. 12 is a block diagram of a structure of a recorded program playing device according to an embodiment of the present invention.
  • the acquiring index module 1204 further includes:
  • the query unit 12002 is adapted to query the corresponding index file (ie, the M3U8 file) storage path information according to the play request message, and notify the user terminal;
  • the receive index request unit 12004 is adapted to receive the index file request information sent by the user terminal, where The index file is determined by the terminal according to its storage path information;
  • the obtaining unit 12006 is adapted to obtain the index file according to the index file request information.
  • FIG. 13 is a schematic structural diagram of a network program recording system according to an embodiment of the present invention. As shown in FIG. 13, the system is a part of a CDN system, and includes:
  • the CDN channel server CHANNEL includes: a downloading module, configured to download a fragmented TS file from the channel source station; and a receiving recording requesting module, configured to receive a recording request message sent by the user terminal, where the recording request message includes recording The start and end time information of the program; the generating indexing module is adapted to determine, according to the recording request message, a TS file to be recorded in the downloaded TS file, and generate a corresponding index file;
  • a distributed file system DFS is suitable for storing the TS file.
  • the CDN system in which the system is located includes:
  • the interface (A interface) between the terminal STB and the CDN management platform IAM is applicable to the IAM receiving the request message sent by the STB, and displaying the message after the recording is successful;
  • the interface between the IAM and the CDN channel server CHANNEL (B interface) is applicable to the IAM to send a request to CHANNEL, mainly the channel creation request and the NPVR recording request.
  • CHANNEL is located in the CDN node, and the IAM can manage multiple CDN nodes at the same time;
  • the interface between the STB and the user management server IAS (C interface) is suitable for the user to access the CDN through the STB and play the recorded program.
  • CHANNEL downloads the slice TS file of the program from the channel source station; the DFS stores the downloaded TS file; CHANNEL receives the recording request message sent by the user terminal with the start and end time information of the recorded program; CHANNEL according to the recording
  • the request message determines the TS file to be recorded in the downloaded TS file and generates a corresponding index file.
  • the user terminal can record the network program in any time period without being limited to the program list specified by the system.
  • the system may further include: a CDN management platform IAM, which can be sent to CHANNEL The information created by the channel is sent, and the recording request sent by the user terminal is received and processed, and forwarded to CHANNEL.
  • a CDN management platform IAM which can be sent to CHANNEL The information created by the channel is sent, and the recording request sent by the user terminal is received and processed, and forwarded to CHANNEL.
  • the IAM can also notify the user terminal of various process status information, such as a message that the CHANNEL creates a channel success, a message that the NPVR application has been accepted, and a message that the NPVR is successfully recorded.
  • process status information such as a message that the CHANNEL creates a channel success, a message that the NPVR application has been accepted, and a message that the NPVR is successfully recorded.
  • the network program recording system in the embodiment of the present invention further includes a database, which is a general-purpose database in the prior art, and is suitable for storing data in a network program recording process, such as storing a NPVR task table, creating a CHANNEL file. Channel record, M3U8 file name and storage path information, NPVR_TS table, etc.
  • a database which is a general-purpose database in the prior art, and is suitable for storing data in a network program recording process, such as storing a NPVR task table, creating a CHANNEL file. Channel record, M3U8 file name and storage path information, NPVR_TS table, etc.
  • the NPVR in the embodiment of the present invention is a personal customized recording, and the time period is set by the terminal user.
  • the TS file is the smallest storage unit. The smaller the TS file is divided, the more accurate the storage is. However, it means that the more files, the more can be divided according to the actual situation.
  • the commonly used segmentation of HLS is a TS slice playback. 10 seconds of video.
  • the CDN system only generates the corresponding m3u8 file, and only one copy of the TS file, which effectively saves the storage space and improves the user experience.
  • the personal recording in the traditional IPTV it also has an advantage.
  • the way of media file segmentation storage makes the NPVR storage more precise, which is a great advantage.
  • IPTV system there are three NPVR personal recordings as shown in the figure.
  • the smallest unit stored in the system is the program, so the system needs to store at least three complete programs to meet the requirements of NPVR.
  • the shard-based storage if the same three NPVR personal recordings, can be accurate to the start time of personal recording 1 and the end time of personal recording 3, effectively saving storage space, is a great advantage.
  • modules or steps of the embodiments of the present invention can be implemented by a general computing device, which can be concentrated on a single computing device or distributed among multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the CDN channel server downloads the fragment TS file of the program from the channel source station; the CDN channel server receives the recording request message sent by the user terminal and includes the start and end time of the recorded program; the CDN channel server according to the recording request message
  • the downloaded TS file determines the TS file to be recorded, and generates a corresponding index file, so that the user terminal can record the network program in any time period without being restricted to the program list specified by the system.

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Abstract

一种网络节目的录制方法、装置、系统以及录制节目的播放方法、装置，其中，所述方法包括：CDN频道服务器从频道源站下载节目的分片TS文件；所述CDN频道服务器接收用户终端发送的录制请求消息，其中，所述录制请求消息中包含录制节目的起止时间；所述CDN频道服务器根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。通过本发明实施例，用户终端可以不受限于系统指定的节目单，在任意时间段内录制网络节目。

Description

一种网络节目的录制方法、装置、系统以及录制节目的播放方法、装置 技术领域
本申请涉及但不限于CDN(Content Delivery Network，内容分发网络)技术领域，尤其涉及一种网络节目的录制方法、装置、系统以及录制节目的播放方法、装置。
背景技术
网络带宽的提高和3G/4G无线通信技术的发展，为在电信网络上开展基于媒体内容的增值服务业务提供了可能。CDN系统作为网络中缓存视频、音频、图片和网页的系统，得到进一步广泛的应用。在电信网络中开展多媒体业务，如IPTV网络电视、OTT TV(开放互联网的视频服务)，CDN系统也发挥着越来越重要的作用。
当前的OTT TV中比较主流的直播频道服务都是基于HLS(Http Live Streaming，用于实时流传输的协议)，TVOD(True Video On Demand，节目录制)、NPVR(Network Personal Video Recorder，个人录制)等业务也都需要基于HLS进行开发；
目前在IPTV和OTT TV中常规的个人录制流程是，首先频道通过正常的节目单已录制成功有节目，用户在机顶盒上操作将已录制的节目归档为个人录制节目，CDN会将已录制的节目单独存储，不同用户针对同一节目的个人录制在CDN上只会存一份，这种方式有效地保证了存储的有效性，不会有多余的存储空间浪费。在相关技术中，如果不以损失部分存储空间为代价，则无法实现对网络节目定制化的个人录制。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种网络节目的录制方法、装置、系统以及录制节目的播放方法、装置，在不损失大量存储空间的前提下，可以实现对网络节目的定制化录制。
一方面，本发明实施例提供了一种网络节目的录制方法，包括：内容分发网络CDN频道服务器从频道源站下载节目的分片TS文件；所述CDN频道服务器接收用户终端发送的录制请求消息，其中，所述录制请求消息中包含录制节目的起止时间；所述CDN频道服务器根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。
可选地，其中，所述CDN频道服务器从频道源站下载分片TS文件，包括：从所述频道源站下载节目的索引文件，根据所述索引文件下载相应的TS文件。
可选地，其中，在所述CDN频道服务器从频道源站下载节目的分片TS文件之后，还包括：将所述TS文件存储在分布式文件系统DFS中。
可选地，其中，所述索引文件为M3U8文件。
可选地，其中，在CDN频道服务器从频道源站下载节目的分片TS文件之后，还包括：所述CDN频道服务器根据用户终端发送的删除录制请求消息，删除未被录制的TS文件。
可选地，在CDN频道服务器从频道源站下载节目的分片TS文件之后，还包括：所述CDN频道服务器定时删除超过预设时间段且未被录制的TS文件。
另一个方面，本发明实施例还提供了一种网络节目的录制装置，设置于CDN频道服务器上，包括：下载模块，设置为从频道源站下载节目的分片TS文件；接收录制请求模块，设置为接收用户终端发送的录制请求消息，其中，所述录制请求消息中包括录制节目的起止时间；生成索引模块，设置为根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。
可选地，所述录制模块，包括：第一下载单元，设置为从所述频道源站下载节目的索引文件；第二下载单元，设置为根据所述索引文件下载相应的 TS文件。
可选地，所述装置还包括：存储模块，设置为将所述TS文件存储在分布式文件系统DFS中。
可选地，其中，所述索引文件为M3U8文件。
可选地，该装置还包括：第一删除模块，设置为根据用户终端发送的删除录制请求消息，删除未被录制的TS文件。
可选地，该装置还包括：第二删除模块，设置为定时删除超过预设时间段且未被录制的TS文件。
又一个方面，本发明实施例还提供了一种录制节目的播放方法，包括：CDN用户服务器接收用户终端发送的播放请求消息，其中，所述播放请求消息中包含录制节目的起止时间；所述CDN用户服务器根据所述播放请求消息获取对应的索引文件，并发送给所述用户终端；所述CDN用户服务器接收所述用户终端发送的获取TS文件请求，其中，所述TS文件是与所述索引文件对应的；所述CDN用户服务器根据所述获取TS文件请求，读取相应的TS文件并发送给所述用户终端。
可选地，其中，所述CDN用户服务器根据所述播放请求消息获取对应的索引文件，包括：所述CDN用户服务器根据所述播放请求消息查询对应的索引文件存储路径信息，并通知所述用户终端；所述CDN用户服务器接收所述用户终端发送的所述索引文件请求信息，其中，所述索引文件是由所述终端根据所述存储路径信息确定的；根据所述索引文件请求信息，获取所述索引文件。
可选地，其中，所述索引文件为M3U8文件。
再一个方面，本发明实施例还提供了一种录制节目的播放装置，设置于CDN用户服务器上，包括：接收播放请求模块，设置为接收用户终端发送的播放请求消息，其中，所述播放请求消息中包括所请求播放录制节目的起止时间；获取索引模块，设置为根据所述播放请求消息获取对应的索引文件，并发送给所述用户终端；第三接收模块，设置为接收所述用户终端发送的获取TS文件请求，其中，所述TS文件是与所述索引文件对应的；读取模块， 设置为根据所述获取TS文件请求，读取相应的TS文件并发送给所述用户终端。
可选地，其中，所述获取索引模块，包括：查询单元，设置为根据所述播放请求消息查询对应的索引文件存储路径信息，并通知所述用户终端；接收索引请求单元，设置为接收所述用户终端发送的所述索引文件请求信息，其中，所述索引文件是由所述终端根据所述存储路径信息确定的；获取单元，设置为根据所述索引文件请求信息，获取所述索引文件。
可选地，其中，所述索引文件为M3U8文件。
还一个方面，本发明实施例还提供了一种网络节目的录制系统，包括：CDN频道服务器CHANNEL和分布式文件系统DFS；
所述CDN频道服务器CHANNEL，包括：下载模块，设置为向频道源站下载节目的分片TS文件；接收录制请求模块，设置为接收用户终端发送的录制请求消息，其中，所述录制请求消息中包括录制节目的起止时间；生成索引模块，设置为根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件；
分布式文件系统DFS，设置为存储所述TS文件。
可选地，该系统还包括：CDN管理平台IAM，设置为将用户终端发送的所述录制请求消息转发给所述CDN频道服务器。
可选地，其中，所述CDN管理平台IAM，还设置为将流程状态信息通知所述用户终端。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述网络节目的录制与播放方法。
通过本发明实施例，CDN频道服务器从频道源站下载节目的分片TS文件；CDN频道服务器接收用户终端发送的录制请求消息，其中，该录制请求消息中包含录制节目的起止时间信息；CDN频道服务器根据该录制请求消息，在下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。使得用户终端可以不受限于系统指定的节目单，在任意时间段内录制网络节目。
在阅读并理解了附图和详细描述后，可以明白其它方面。
附图概述
此处所说明的附图用来提供对本发明实施例的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的网络节目录制方法流程图；
图2是根据本发明实施例的CDN频道服务器下载TS文件流程图；
图3是根据本发明实施例的网络节目录制申请流程图；
图4是根据本发明实施例的网络节目录制处理流程图；
图5是根据本发明实施例的TS文件回滚流程图；
图6是根据本发明实施例的NPVR删除流程图；
图7是根据本发明实施例的网络节目的录制装置结构框图一；
图8是根据本发明实施例的网络节目录制装置结构框图二；
图9是根据本发明实施例的录制节目播放方法流程图一；
图10是根据本发明实施例的录制节目播放方法流程图二；
图11是根据本发明实施例的录制节目播放装置结构框图一；
图12是根据本发明实施例的录制节目播放装置结构框图二；
图13是根据本发明实施例的网络节目录制系统结构示意图。
本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
本发明实施例提供了一种网络节目的录制方法，图1是根据本发明实施例的网络节目录制方法流程图，如图1所示，该方法包括：
S102，CDN频道服务器从频道源站下载节目的分片TS文件；
S104，CDN频道服务器接收用户终端发送的录制请求消息，其中，所述录制请求消息中包含录制节目的起止时间信息；
S106，CDN频道服务器根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。
通过本发明实施例，CDN频道服务器从频道源站下载节目的分片TS文件；CDN频道服务器接收用户终端发送的录制请求消息，其中，该录制请求消息中包含录制节目的起止时间信息；CDN频道服务器根据该录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。使用户终端可以不受限于系统指定的节目单，在任意时间段内录制网络节目。
在本发明的一个实施方式中，CDN频道服务器从频道源站下载分片TS文件，包括：从频道源站下载节目的索引文件；根据索引文件下载相应的TS文件。其中，该实施例中的索引文件为M3U8文件。图2是根据本发明实施例的CDN频道服务器下载TS文件流程图，如图2所示，该方法包括：
S202，CDN管理平台(本实施例为IAM，Identity and Access Management，即身份识别与访问管理)向CDN频道服务器(CHANNEL)发起频道创建请求。
S204，CDN频道服务器(CHANNEL)响应频道创建请求，通知IAM收到频道创建任务。
S206，CHANNEL进行本地创建频道的处理，增加频道数据区，处理频道下载文件的准备工作。
S208，CHANNEL的本地频道创建任务处理完成后，在数据库(DB,DataBase)中插入频道记录，频道状态为工作中。
S210，CHANNEL向IAM上报频道创建成功消息。
S212，IAM向CHANNEL响应收到创建成功消息。
S214，本地频道创建成功后，CHANNEL从频道源站下载索引M3U8文件和TS分片文件，其中，CHANNEL先下载M3U8文件，然后根据M3U8文件中的索引信息下载TS文件。
其中，频道为实时直播流，所以频道创建成功后，按照HLS协议，CHANNEL定时从频道源站请求M3U8文件和TS文件在本地存储，也可以存储在DFS(Distributed File System，分布式文件系统)中。
在本发明的一个实施方式中，用户终端发送的录制请求消息中包含录制节目的起止时间信息，还包含频道ID(Identity，即身份识别码)信息、用户ID信息。图3是根据本发明实施例的网络节目录制申请流程图，如图3所示，该流程包括以下步骤：
S302，STB(Set Top Box，机顶盒，即用户终端)向IAM发送NPVR录制申请，申请消息最主要的是包含NPVR的开始时间、结束时间、频道ID和用户ID。
S304，IAM收到STB请求后返回收到NPVR录制申请的响应。
S306，IAM进行用户NPVR功能鉴权，鉴权成功后再执行后续流程。
S308，IAM下发NPVR请求到CDN频道服务器CHANNEL，申请消息中包含NPVR的开始时间、结束时间、用户ID和NPVR节目ID信息。
S310，CHANNEL收到NPVR申请后，返回响应，表示收到申请。
S312，CHANNEL从数据库查询NPVR任务表中是否已存在当前记录，如果已存在则不再插入，如果不存在则将申请记录插入NPVR任务表。标记NPVR任务的状态为待处理。
S314，CHANNEL向IAM上报NPVR申请已成功受理。
S316，IAM向用户展示NPVR申请已受理，在录制中。
在本发明的一个实施方式中，CDN频道服务器CHANNEL定时查询数据库NPVR表，查找到待处理的NPVR任务则开始处理该任务。处理任务前，不区分NPVR任务开始时间和结束时间的情况，只要在频道录制TS回滚时间之前的任务都是可以处理的。图4是根据本发明实施例的网络节目录制处理流程图，如图4所示，该流程包括以下步骤：
S402，CHANNEL定时查询NPVR录制任务表。主要查询录制完成时间和开始时间。
S404，CHANNEL根据NPVR任务的结束时间，判断当前时间是否已完 成了频道TS在NPVR时间段的录制。如果未完成录制，则不处理。如果已完成录制则开始执行S406步骤。
S406，频道TS已录制完成，TS文件中可以提取时间段信息，CHANNEL根据NPVR的开始时间和结束时间确定需要录制哪些TS文件，生成与需要录制的TS文件所对应的M3U8文件。
S408，M3U8文件生成成功后，将数据库的NPVR任务表中的任务状态更新为已完成，数据库中记录M3U8文件名称和存储路径。
S410，CHANNEL向IAM上报NPVR录制成功。
S412，IAM向用户展示NPVR录制已完成。
在本发明的一个实施方式中，只要是NPVR未使用的并且超出频道录制时间的TS文件，都进行删除处理。图5是根据本发明实施例的TS文件回滚流程图，如图5所示，该流程包括：
CHANNEL在创建频道时会确定最大录制时间，在最大时间内，频道会录制完整的分片TS文件。在处理NPVR任务时，只要满足频道在录制TS文件，并且时间到达NPVR任务的结束时间，CHANNEL即可处理生成相应的M3U8文件，并将NPVR使用的TS文件列表信息插入数据库的NPVR录制TS文件表(NPVR_TS表)，还在“NPVR录制TS文件表”中记录下TS文件，重复的TS文件记录不重复插入数据库。
CHANNEL回滚录制文件的进程，定时在数据库中查询“NPVR录制TS文件表”，判断表中不存在的并且超出录制时间的TS文件并进行删除。
在本发明的一个实施方式中，CHANNEL根据用户终端发送的删除录制请求消息，将未被录制的TS文件删除。图6是根据本发明实施例的NPVR删除流程图，如图6所示，该流程包括：
NPVR的删除请求消息，从STB下发到IAM，再从IAM下发到CDN频道服务器CHANNEL，该请求消息中同样包含NPVR的开始时间、结束时间、频道ID和用户ID。
CHANNEL根据该NPVR任务的时间段，查询其他NPVR任务的时间段信息，找出该NPVR与其他NPVR任务不重复的时间段，针对不重合的时间 段确定TS文件列表，在NPVR_TS表中删除相应的TS文件记录，并且在数据库的NPVR任务表中删除该NPVR信息。
本发明实施例还提供了一种网络节目的录制装置，设置于CDN频道服务器上，所述服务器包括处理器和程序存储设备，图7是根据本发明实施例的网络节目录制装置结构框图一，如图7所示，该装置包括：
下载模块702，适用于从频道源站下载节目的分片TS文件；
接收录制请求模块704，适用于接收用户终端发送的录制请求消息，其中，该录制请求消息中包括录制节目的起止时间信息；
生成索引模块706，适用于根据该录制请求消息，在上述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。
通过本发明实施例，下载模块702从频道源站下载节目的分片TS文件；接收录制请求模块704接收用户终端发送的录制请求消息，其中，该录制请求消息中包含录制节目的起止时间信息；生成索引模块706根据该录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。使用户终端可以不受限于系统指定的节目单，在任意时间段内录制网络节目。
图8是根据本发明实施例的网络节目录制装置结构框图二，在本发明的一个实施方式中，如图8所示，录制模块802还包括：第一下载单元8002，适用于从频道源站下载节目的索引文件M3U8；第二下载单元8004，适用于根据该索引文件M3U8下载相应的TS文件。
在本发明的一个实施方式中，如图8所示，该装置还包括：存储模块808，适用于将上述TS文件存储在分布式文件系统DFS中。
在本发明的一个实施方式中，如图8所示，该装置还包括：第一删除模块810，适用于根据用户终端发送的删除录制请求消息，将未被录制的TS文件删除。该装置还可以包括：第二删除模块812，适用于定时将超过预设时间段且未被录制的TS文件删除。当然上述两个删除模块既可以同时存在，也可以单独设置在该装置中。
本发明实施例还提供了一种录制节目的播放方法，NPVR录制成功之后， 用户即可以通过终端访问并进行播放。图9是根据本发明实施例的录制节目播放方法流程图一，如图9所示，该方法包括以下步骤：
S902，CDN用户服务器接收用户终端发送的播放请求消息，其中，所述播放请求消息中包含录制节目的起止时间信息；
S904，CDN用户服务器根据该播放请求消息获取对应的索引文件，并发送给用户终端；
S906，CDN用户服务器接收用户终端发送的获取TS文件请求，其中，该TS文件是与上述索引文件对应的；
S908，CDN用户服务器根据该获取TS文件请求，读取相应的TS文件并发送给用户终端。
通过本发明实施例，CDN用户服务器接收用户终端发送的播放请求消息，其中，所述播放请求消息中包含录制节目的起止时间信息；CDN用户服务器根据该播放请求消息获取对应的索引文件，并发送给用户终端；S906，CDN用户服务器接收用户终端发送的获取TS文件请求，其中，该TS文件是与上述索引文件对应的；S908，CDN用户服务器根据该获取TS文件请求，读取相应的TS文件并发送给用户终端。使用户终端可以不受限于系统指定的节目单，在任意时间段内录制网络节目，并进行播放。
在本法的一个实施方式中，用户通过HTTP消息请求NPVR播放，用户发起播放NPVR的流程消息中包含NPVR开始时间、结束时间以及频道ID信息。图10是根据本发明实施例的录制节目播放方法流程图二，如图2所示，该方法包括以下步骤：
S1002，用户终端(STB)发起HTTP请求NPVR播放，HTTP请求中包含关键信息：NPVR开始时间、结束时间、频道ID、用户ID。
S1004，CDN用户服务器(IAS)收到请求后，在数据库DB的NPVR表中根据节目开始时间、结束时间和频道ID，查询到M3U8文件的路径信息。
S1006，IAS返回STB一个重定向消息，消息中包含了STB下一步请求M3U8文件的URL。
S1008，STB再根据M3U8文件的URL请求IAS。
S1010，IAS根据M3U8文件的路径从分布式文件系统DFS中获取到M3U8文件。
S1012，IAS将M3U8文件返回给STB。
S1014，根据HLS协议，M3U8文件中包含了STB下一步请求所需要的所有TS列表。STB根据TS的URL列表持续请求IAS去获取相应的分片TS文件。
S1016，IAS每次收到STB请求TS文件的消息，则从DFS中读取TS文件。
S1018，IAS每次收到STB请求TS文件的消息，IAS将读取到的TS文件返回给STB。这个流程重复到STB请求完成所有的TS文件为止。
本发明实施例还提供了一种录制节目的播放装置，设置于CDN用户服务器上，所述服务器包括处理器和程序存储设备。图11是根据本发明实施例的录制节目播放装置结构框图一，如图11所示，该装置包括：
接收播放请求模块1102，适用于接收用户终端发送的播放请求消息，其中，该播放请求消息中包括所请求播放录制节目的起止时间信息；获取索引模块1104，适用于根据该播放请求消息获取对应的索引文件，并发送给用户终端；第三接收模块1106，适用于接收用户终端发送的获取TS文件请求，其中，该TS文件是与上述索引文件对应的；读取模块1108，适用于根据该获取TS文件请求，读取相应的TS文件并发送给用户终端。
通过本发明实施例，接收播放请求模块1102接收用户终端发送的播放请求消息，其中，该播放请求消息中包括所请求播放录制节目的起止时间信息；获取索引模块1104根据该播放请求消息获取对应的索引文件，并发送给用户终端；第三接收模块1106接收用户终端发送的获取TS文件请求，其中，该TS文件是与上述索引文件对应的；读取模块1108根据该获取TS文件请求，读取相应的TS文件并发送给用户终端。使用户终端可以不受限于系统指定的节目单，在任意时间段内录制网络节目，并进行播放。
图12是根据本发明实施例的录制节目播放装置结构框图二，在本发明的一个实施方式中，如图12所示，获取索引模块1204还包括：
查询单元12002，适用于根据播放请求消息查询对应的索引文件(即M3U8文件)存储路径信息，并通知用户终端；接收索引请求单元12004，适用于接收用户终端发送的索引文件请求信息，其中，该索引文件是由终端根据其存储路径信息确定的；获取单元12006，适用于根据该索引文件请求信息，获取索引文件。
本发明实施例还提供了一种网络节目的录制系统，图13是根据本发明实施例的网络节目录制系统结构示意图，如图13所示，该系统是CDN系统的一部分，包括：
CDN频道服务器CHANNEL，包括：下载模块，适用于从频道源站下载节目的分片TS文件；接收录制请求模块，适用于接收用户终端发送的录制请求消息，其中，所述录制请求消息中包括录制节目的起止时间信息；生成索引模块，适用于根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件；
分布式文件系统DFS，适用于存储所述TS文件。
其中，该系统所在的CDN系统中包括：
终端STB与CDN管理平台IAM的接口(A接口)，适用于IAM接收STB发送的请求消息，以及展示录制成功后的消息；
IAM与CDN频道服务器CHANNEL的接口(B接口)，适用于IAM给CHANNEL下发请求，主要是频道创建请求和NPVR录制请求，CHANNEL位于CDN节点中，IAM可以同时管理多个CDN节点；
STB与用户管理服务器IAS的接口(C接口)，适用于用户通过STB访问CDN，并播放所录制的节目。
通过本发明实施例，CHANNEL从频道源站下载节目的分片TS文件；DFS对下载的TS文件进行存储；CHANNEL接收用户终端发送的附有录制节目起止时间信息的录制请求消息；CHANNEL根据该录制请求消息，在下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。使用户终端可以不受限于系统指定的节目单，在任意时间段内录制网络节目。
可选地，该系统还可以包括：CDN管理平台IAM，可以向CHANNEL 下发频道创建的信息，接收并处理用户终端发送的录制申请，并转发给CHANNEL。
可选地，IAM还可以将多种流程状态信息通知用户终端，比如CHANNEL创建频道成功的消息、NPVR申请已受理的消息、NPVR录制成功的消息等。
当然，本发明实施例中的网络节目录制系统还包括有数据库，这种数据库是现有技术中的通用数据库即可，适用于存储网络节目录制过程中的数据，比如存储NPVR任务表、CHANNEL创建的频道记录、M3U8文件的名称和存储路径信息、NPVR_TS表等。
需要说明的是，本发明实施例的中的NPVR是个人定制化的录制，时间段由终端用户设置。存储空间占用方面，以TS文件为最小的存储单元，TS文件分割的越小，存储越精确，但也意味着文件越多，可以根据实际情况分割，目前HLS常用的分割是一个TS分片播放10秒钟的视频。不同的个人录制，CDN系统只生成对应的m3u8文件，TS文件仅存储一份，有效地节省了存储空间占用，并同时提高了用户体验。另外对比传统IPTV中的个人录制也更具有优势，媒体文件分片存储的方式，使得NPVR存储更加精确化，是一个极大的优势。在传统的IPTV系统中，有如图所示的三个NPVR个人录制，系统中存储的最小单元是节目，所以系统至少需要存储三个完整的节目，来满足NPVR的要求。而基于分片的存储，如果也是一样的三个NPVR个人录制，则可以精确到个人录制1的开始时间和个人录制3的结束时间，有效节省了存储空间占用，是一个极大的优势。
最后，本领域的技术人员应该明白，上述的本发明实施例的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本 领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
通过本发明实施例，CDN频道服务器从频道源站下载节目的分片TS文件；CDN频道服务器接收用户终端发送的包含录制节目的起止时间的录制请求消息；CDN频道服务器根据该录制请求消息，在下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件，可以使用户终端不受限于系统指定的节目单，在任意时间段内录制网络节目。

Claims (22)

  1. 一种网络节目的录制方法，包括：
    内容分发网络CDN频道服务器从频道源站下载节目的分片TS文件；
    所述CDN频道服务器接收用户终端发送的录制请求消息，其中，所述录制请求消息中包含录制节目的起止时间；
    所述CDN频道服务器根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。
  2. 根据权利要求1所述的方法，其中，所述CDN频道服务器从频道源站下载分片TS文件，包括：
    从所述频道源站下载节目的索引文件；
    根据所述索引文件下载相应的TS文件。
  3. 根据权利要求2所述的方法，其中，在所述CDN频道服务器从频道源站下载节目的分片TS文件之后，还包括：
    将所述TS文件存储在分布式文件系统DFS中。
  4. 根据权利要求3所述的方法，其中，所述索引文件为M3U8文件。
  5. 根据权利要求1至4任一项所述的方法，其中，在CDN频道服务器从频道源站下载节目的分片TS文件之后，还包括：
    所述CDN频道服务器根据用户终端发送的删除录制请求消息，删除未被录制的TS文件。
  6. 根据权利要求5所述的方法，其中，在CDN频道服务器从频道源站下载节目的分片TS文件之后，还包括：
    所述CDN频道服务器定时删除超过预设时间段且未被录制的TS文件。
  7. 一种网络节目的录制装置，设置于CDN频道服务器上，包括：
    下载模块，设置为从频道源站下载节目的分片TS文件；
    接收录制请求模块，设置为接收用户终端发送的录制请求消息，其中，所述录制请求消息中包括录制节目的起止时间；
    生成索引模块，设置为根据所述录制请求消息，在所述下载的TS文件中确定需要录制的TS文件，并生成对应的索引文件。
  8. 根据权利要求7所述的装置，其中，所述录制模块包括：
    第一下载单元，设置为从所述频道源站下载节目的索引文件；
    第二下载单元，设置为根据所述索引文件下载相应的TS文件。
  9. 根据权利要求8所述的装置，还包括：
    存储模块，设置为将所述TS文件存储在分布式文件系统DFS中。
  10. 根据权利要求9所述的装置，其中，所述索引文件为M3U8文件。
  11. 根据权利要求7至10任一项所述的装置，还包括：
    第一删除模块，设置为根据用户终端发送的删除录制请求消息，删除未被录制的TS文件。
  12. 根据权利要求11所述的装置，还包括：
    第二删除模块，设置为定时删除超过预设时间段且未被录制的TS文件。
  13. 一种录制节目的播放方法，包括：
    CDN用户服务器接收用户终端发送的播放请求消息，其中，所述播放请求消息中包含录制节目的起止时间；
    所述CDN用户服务器根据所述播放请求消息获取对应的索引文件，并发送给所述用户终端；
    所述CDN用户服务器接收所述用户终端发送的获取TS文件请求，其中，所述TS文件是与所述索引文件对应的；
    所述CDN用户服务器根据所述获取TS文件请求，读取相应的TS文件并发送给所述用户终端。
  14. 根据权利要求13所述的方法，其中，所述CDN用户服务器根据所述播放请求消息获取对应的索引文件，包括：
    所述CDN用户服务器根据所述播放请求消息查询对应的索引文件存储路径信息，并通知所述用户终端；
    所述CDN用户服务器接收所述用户终端发送的所述索引文件请求信息，其中，所述索引文件是由所述终端根据所述存储路径信息确定的；
    根据所述索引文件请求信息，获取所述索引文件。
  15. 根据权利要求14所述的方法，其中，所述索引文件为M3U8文件。
  16. 一种录制节目的播放装置，设置于CDN用户服务器上，包括：
    接收播放请求模块，设置为接收用户终端发送的播放请求消息，其中，所述播放请求消息中包括所请求播放录制节目的起止时间；
    获取索引模块，设置为根据所述播放请求消息获取对应的索引文件，并发送给所述用户终端；
    第三接收模块，设置为接收所述用户终端发送的获取TS文件请求，其中，所述TS文件是与所述索引文件对应的；
    读取模块，设置为根据所述获取TS文件请求，读取相应的TS文件并发送给所述用户终端。
  17. 根据权利要求16所述的装置，其中，所述获取索引模块包括：
    查询单元，设置为根据所述播放请求消息查询对应的索引文件存储路径信息，并通知所述用户终端；
    接收索引请求单元，设置为接收所述用户终端发送的所述索引文件请求信息，其中，所述索引文件是由所述终端根据所述存储路径信息确定的；
    获取单元，设置为根据所述索引文件请求信息，获取所述索引文件。
  18. 根据权利要求17所述的装置，其中，所述索引文件为M3U8文件。
  19. 一种网络节目的录制系统，包括：CDN频道服务器CHANNEL和分布式文件系统DFS；
    所述CDN频道服务器CHANNEL，包括：
    下载模块，设置为向频道源站下载节目的分片TS文件；
    接收录制请求模块，设置为接收用户终端发送的录制请求消息，其中，所述录制请求消息中包括录制节目的起止时间信息；
    生成索引模块，设置为根据所述录制请求消息，在所述下载的TS 文件中确定需要录制的TS文件，并生成对应的索引文件；
    所述分布式文件系统DFS，设置为存储所述TS文件。
  20. 根据权利要求19所述的系统，还包括：
    CDN管理平台IAM，设置为将用户终端发送的所述录制请求消息转发给所述CDN频道服务器。
  21. 根据权利要求20所述的系统，其中，所述CDN管理平台IAM，还设置为将流程状态信息通知所述用户终端。
  22. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1-6，13-15任一项的方法。
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