Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
• • 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
  • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
  • H04N21/4334—Recording 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]
  • H04N21/40—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
  • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
  • H04N21/44245—Monitoring the upstream path of the transmission network, e.g. its availability, bandwidth
• • 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
  • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
  • H04N21/4425—Monitoring of client processing errors or hardware failure
• • 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]
  • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
  • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
  • H04N21/637—Control signals issued by the client directed to the server or network components
  • H04N21/6375—Control signals issued by the client directed to the server or network components for requesting retransmission, e.g. of data packets lost or corrupted during transmission from 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]
  • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
  • H04N21/65—Transmission of management data between client and server
  • H04N21/658—Transmission by the client directed to the server
  • H04N21/6581—Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Definitions

• Embodiments of the present invention relate to network communication technologies, and in particular, to a method for repairing a media file recording error, a recording terminal, a server, and a system. Background technique
• Video recording can store live TV signals transmitted through cable (Cab le) network, terrestrial transmission network, satellite live network, IP network, etc., on the local storage device or network storage space connected to the terminal for later use.
• Video recording mainly implements core functions such as receiving, descrambling, secondary encryption, and storage of compressed code streams.
• various recording error avoidance methods can be adopted, such as: improving network transmission quality, identifying and correcting transmission errors based on a specific algorithm, ensuring transmission quality based on a reliable transmission protocol, and improving the stability of recording terminal operation (mainly Ensure the stability of the storage unit work) or correct the error in the automatic frame skipping mode during playback.
• circumvention can be used to reduce the recording error of live video, since the transmission link cannot guarantee 100% reliability, recording errors cannot be completely avoided.
• the prior art for repairing a recording error includes: when a recording error of a live video occurs, searching for an identical program in a subsequent time period in an Electronic Program Guide (EPG), if the same program exists, Automatically trigger a new recording task.
• EPG Electronic Program Guide
• the inventors have found that the prior art that repairs the currently recorded error program by recording the same program in the subsequent time period, the repair relies on the same program in different time periods, and thus there is a recording error. Repair technical defects with poor reliability. Summary of the invention
• Embodiments of the present invention provide a method for repairing a media file recording error, a recording terminal, a server, and a system, which are used to improve the reliability of recording error repair and reduce the use of line bandwidth for recording error repair.
• the embodiment of the present invention provides a method for repairing a media file recording error, including: when the recording terminal recognizes a recording error in a live recording of a media file, generating description information of the recording error;
• the description information including the recording error is sent to the network side device through the two-way network between the recording terminal and the network side device. Recording the repair request, and repairing the media files recorded by the network side device according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
• the embodiment of the present invention further provides a recording terminal, including a recording module, and a generating module, configured to generate description information of the recording error when a recording error is recognized in a live recording of the media file;
• a repair requesting module configured to send a recording repair request to the network side device, where the recording repair request includes the description information
• a repairing module configured to: when receiving the repair information sent by the network side device according to the description information, repair the media file recorded by the recording terminal according to the repair information.
• the repair request module sends the description information including the recording error to the network side device through the two-way network between the recording terminal and the network side device.
• the repair request is recorded, and the repair module repairs the media file recorded by the repair device according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
• the embodiment of the invention further provides a network server, including:
• a network recording module configured to perform live recording of media files
• a storage module configured to store data recorded by the recording module
• a recording management module configured to receive a recording repair request, where the recording repair request includes: description information of a recording error recognized by the recording terminal in a live recording of the media file; and acquiring, by the storage module, the recording data that matches the description information, And transmitting the recorded data to the recording terminal.
• the network server provided by the embodiment of the present invention can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send the recording data of the network server matching the request to the recording terminal, so that the recording terminal can Fix the media files recorded by yourself to ensure the reliability of media file recording error repair.
• An embodiment of the present invention further provides another network server, including:
• a repair request receiving module configured to receive a recording repair request, where the recording repair request includes description information of a recording error recognized by the recording terminal in a live recording of the media file;
• a broadcast module configured to broadcast an inquiry request carrying the description information
• a repair request response module configured to send, when the other recording terminal storing the recorded data that matches the description information sends an inquiry response to the second network server, send the other recording terminal information that sends the inquiry response to the Record the terminal.
• the network server provided by the embodiment of the present invention can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send information of the other recording terminal that stores the recorded data that matches the request to the recording terminal. , so that the recording terminal that sends the recording error repair request can obtain the correct recording data to other recording terminals, and enter the media file recorded by itself. Line repair, thus ensuring the reliability of media file recording error repair.
• the embodiment of the present invention further provides a repairing system for media file recording errors, including a live system head end, a network side device, and a recording terminal;
• the recording terminal is configured to: when the recording error is detected in the live recording of the media file at the head end of the live broadcast system, generate the description information of the recording error; send a recording repair request to the network side device, where the recording repair request includes The description information is: when the repair information sent by the network side device according to the description information is received, the media file recorded by the recording terminal is repaired according to the repair information;
• the network side device is configured to send, to the recording terminal, repair information that matches the description information when receiving the recording repair request.
• the repairing system for the media file recording error provided by the embodiment of the present invention sends a recording error to the network side device through the two-way network between the recording terminal and the network side device when a recording error occurs during the recording of the media file at the head end of the live broadcast system.
• the recording repair request of the description information of the error is recorded, and the media file recorded by the network side device is repaired according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
• FIG. 1 is a flowchart of a first embodiment of a method for repairing a media file recording error according to the present invention
• FIG. 2 is a flowchart of a second embodiment of a method for repairing a media file recording error according to the present invention
• FIG. 4 is a flowchart of a fourth embodiment of a method for repairing a media file recording error according to the present invention
• FIG. 6 is a schematic structural diagram of an embodiment of a network server according to the present invention.
• FIG. 7 is a schematic structural diagram of another embodiment of a network server according to the present invention.
• FIG. 8 is a schematic structural diagram of a first embodiment of a system for repairing a media file recording error according to the present invention
• FIG. 9 is a schematic structural diagram of a second embodiment of a media file recording error repairing system according to the present invention
• FIG. 11 is a schematic structural diagram of a fourth embodiment of a repairing system for media file recording errors according to the present invention.
• the live recording is performed by the recording terminal or the network side device to record the media file played by the head end of the live broadcast system through the live broadcast network; the recording error is due to the network transmission or the recording terminal itself working fault, etc. The reason is that the data recorded by the recording terminal does not match the original data at the head end of the live broadcast system.
• FIG. 1 is a flowchart of a first embodiment of a method for repairing a media file recording error according to the present invention. As shown in Figure 1, this embodiment includes:
• Step 101 When the recording terminal recognizes a recording error in the live recording of the media file, the description information of the recording error is generated.
• Step 103 Send a recording repair request to the network side device, where the recording repair request includes description information of the recording error generated in step 101.
• Step 105 When receiving the repair information sent by the network side device according to the description information of the recording error, repair the media file recorded by the recording terminal according to the repair information.
• the recording repair request including the description information of the recording error is sent to the network side device through the two-way network between the recording terminal and the network side device, and is sent according to the network side device.
• the repair information repairs the media files recorded by itself, thereby ensuring the reliability of media file recording error repair.
• the method to improve the quality of network transmission The key to this method is to improve the quality of the physical link.
• the main factors affecting the quality of the physical link include transmission loss, transmission interference, multipath effect, etc. Generally, link negotiation, line shielding, etc. are adopted. Means to solve; However, in satellite and terrestrial live TV transmission networks, because the transmission medium is air, it is more susceptible to external interference, and its network transmission is not only impossible to transmit without error, but also may cause signals due to strong signal interference. The situation is greatly reduced in quality.
• Handling method for network transmission error correction This method identifies and corrects link transmission errors by introducing redundant information, such as error correction codes, such as linear block codes, cyclic codes, convolutional codes, etc.; but mathematical methods The introduction cannot completely eliminate network transmission errors, such as satellite and terrestrial transmissions, which may result in the failure to receive data fragments due to continuous interference.
• redundant information such as error correction codes, such as linear block codes, cyclic codes, convolutional codes, etc.
• the recording terminal itself is a mechanical electronic device.
• the problem of stability caused by vibration interference, electromagnetic interference, and network impact cannot be completely eliminated.
• structural seismic design and hardware electromagnetic compatibility design can be adopted. Wait for the external interference to be as low as possible, but it is always impossible to eliminate interference 100%.
• Reliable transmission protocol is an error recovery scheme based on two-way communication mechanism.
• the general application is based on the solution of providing live broadcast service based on two-way communication network, for example, live broadcast over TCP based on IP network; reliable transmission protocol
• the error retransmission packet may be required to be retransmitted.
• error avoidance is limited, and generally can only be limited to the time range of the terminal side live buffer.
• the method for avoiding error correction in recording terminal playback The application of error correction technology is very common. The main idea is to skip frames. The method of frame skipping can not affect the normal playback of recorded files. The user experience is improved to some extent by playing error correction. , but it does not essentially repair the data.
• the above-mentioned circumvention method can reduce the recording errors occurring in the live recording of the media file, the recording error is inevitable, so it is necessary to repair the recording errors occurring during the live recording.
• the recording error of the prior art on the recording terminal is a single broadcast through the media file. To the network, that is, the head end of the live broadcast system can send downlink data to the recording terminal, but the recording terminal cannot send uplink data to the head end of the live broadcast system.
• the embodiment of the present invention supports the recording terminal and the network side device of the live broadcast system, and the two-way network capable of interactive communication through the recording terminal and the network side device, Or recording a recording error caused by the actual recording of the terminal, the recording terminal may send a recording repair request including the recording error description information to the network side device, and repair the media file recorded by the recording terminal according to the repair information sent by the network side device, Thereby ensuring the reliability of media file recording error repair.
• FIG. 2 is a flow chart of a second embodiment of a method for repairing a media file recording error according to the present invention.
• the architecture of the bidirectional network where the recording terminal and the network side device are located is a client/server (C/S) network architecture, where the network side device is the first embodiment of the present invention.
• the network server; the first network server and the recording terminal both support the webcast recording service. As shown in FIG. 2, this embodiment includes:
• Step 201 The recording terminal records the media file broadcasted by the head end of the live broadcast system through the live broadcast network, and identifies whether the recorded media file has a recording error.
• the way to identify recording errors can include:
• the recording terminal receives the live media file from the head end of the live recording system through the live broadcast network.
• the recording terminal recognizes the packet loss, out of order, wrong package, etc. during the data receiving process, If the lost frame or bad frame is caused, the recording terminal recognizes that a recording error has occurred.
• the recording error caused by the network transmission or recording terminal failure during recording of the media file cannot be recognized and recorded in real time, the recording error can be recognized when the recording terminal decodes the recorded media file.
• the recording terminal finds that the recorded media file cannot be correctly decoded, the recording terminal recognizes that a recording error has occurred;
• recording errors can also be made by manual identification. If the recording terminal receives the media file, the recording error is not recognized in real time, and no abnormality is found in the decoded media file, but When a local area flower screen or mosaic phenomenon occurs during the playback of a recorded media file, the recording error that occurs may be recognized by manual recognition.
• Step 203 When a recording error is recognized, information related to the recording error is recorded, and a description information of the recording error is generated.
• the recording terminal When a recording error is recognized, different descriptions of recording errors may be generated according to different types of recording errors; the description information of the generated recording errors includes type information of recording errors. For example: When the media file broadcasted on the head end of the live broadcast system is transmitted in the video frame mode, the recording terminal records the recording error by:
• the type value of the recording error can be set to 1, and the frame loss related information needs to be recorded, including the correct video adjacent to the lost video frame.
• the identification information and the time information of the frame correspondingly, the description information of the generated error type may include: a type of the recording error (type value is 1), identification information and time information of the correct video frame adjacent to the lost video frame.
• the identification information of the correct video frame adjacent to the lost video frame may include the start of the correct video frame adjacent to the lost video frame.
• a code prefix which may be a start code prefix ( s tar t -code-pref ix ) parameter defined by a Network Abs tract Layer (NAL) in the H.264 video coding standard;
• NAL Network Abs tract Layer
• the media file is in a packet-oriented transmission format in the network, and the identification information of the correct video frame adjacent to the lost video frame may include a transmission protocol. I and part of the video frame; and the time information may include a Decoding Time Stamp (DTS) or a calendar time.
• DTS Decoding Time Stamp
• the type value of the recording error can be set to 2, and the bad frame related information, including the identifier of the damaged video frame, needs to be recorded.
• the description information of the generated error type may include: a type of recording error (type value is 2), identification information and time information of a correct video frame adjacent to the lost video frame.
• the type value of the recording error is set to another class.
• Type you can set the type value of this recording error to 3.
• the preset reaction time length is required to be added before and after the recording start and end point.
• the reaction duration is 300 milliseconds.
• Step 205 The recording terminal sends a recording repair request to the first network server, where the repair recording repair request includes description information of the recording error.
• Step 207 The first network server receives the recording repair request, parses the recording repair request, searches for the recording data that matches the recording error description information in the media file recorded by the first network server, and sends the recorded data as the repair information to the recording terminal. .
• Step 209 The recording terminal repairs the media file recorded by the recording terminal according to the recorded data sent by the first network server.
• the method of initiating the recording error of the media file recorded by itself is very flexible, for example: the recording terminal can automatically start when receiving the repair information from the first network server.
• the error repair process is recorded; or the repair process of the recording error is automatically started when the preset condition is met; or the repair process of the recording error is initiated when an external trigger (such as a user manual start, etc.).
• the recording terminal can correct and repair the recorded content based on the delayed transmission of the program, and delay the transmission of the same program through another channel.
• the inventor finds that for a live channel program, the existing technology transmitted through another channel after delay, in the process of recording error repair, the media file recorded by the recording terminal needs to be performed as a whole. Replacement, therefore, it takes a long time to occupy one channel, and the line bandwidth utilization is low.
• the recording terminal when the recording terminal initiates the recording error repair in the embodiment of the present invention, it may be different according to the recorded data sent by the first network server.
• the type of recording error corresponding to the specific data fragment in the recorded media file where the recording error occurred; for example: When the type of the recording error is frame loss, the recording terminal will repair the letter from the first network server when the type of the recording error is a bad frame, and the recording terminal replaces the media file recorded by the recording terminal with the repair information from the first network server. Corrupting the corresponding data of the video frame;
• the recording terminal replaces the corresponding data to be repaired in the media file recorded by the recording terminal with the repair information from the first web server.
• Step 211 After the recording terminal completes the repair processing of the media file recorded by itself, the recording test is performed on the repaired segment.
• the recording terminal can automatically start the decoding test of the repaired segment in the idle state, for example: When the user does not use the recording terminal, the recording terminal can automatically start the decoding test of the repaired segment. , the video is not output during the decoding test.
• the recording terminal ends the recording error repair process; if the repaired segment fails the decoding test, the recording terminal regenerates the description of the recording error and resends the recording repair request to the first network server. Steps 207-211 are repeated until the recording error repair is completed. Therefore, the decoding test by the repair segment can further ensure that the repaired data can be decoded normally, and the accuracy and reliability of the recording repair are guaranteed.
• the recording terminal that supports the live recording service communicates with the first network server to realize the recording error correction in the media file recorded by the recording terminal, and ensures the reliable recovery of the media file recording error.
• the description information of the recording error generated by the recording terminal includes the detailed information of the recording error, which is beneficial for the first network server to accurately obtain the matching repair information according to the description information, thereby facilitating the accuracy of the recording terminal to perform the recording error repairing;
• the recording terminal can perform the repair processing of the recording error according to actual needs, and the method is flexible.
• the recording terminal can record a recording error in the media file recorded by the recording terminal according to the obtained repair information.
• the specific data segment is subjected to repair processing such as insertion or replacement. Therefore, it is not necessary to replace the media file recorded by the recording terminal as a whole, which can reduce the use of the line bandwidth by the media file recording error repair, thereby facilitating the improvement of the line bandwidth. The usage rate is further improved.
• the repairing segment detects the repaired segment until the repaired segment ends the recording error repair process, thereby improving the reliability and accuracy of the recording error repair.
• FIG. 3 is a flowchart of a third embodiment of a method for repairing a media file recording error according to the present invention.
• the network side device includes a point-to-point (P2P) node server and other recording terminals that are in communication with the P2P node server, where the P2P node server is the second network server in the embodiment of the present invention;
• the network architecture on which the recording terminal and other recording terminals are based is a P2P network architecture. As shown in FIG. 3, this embodiment includes:
• Step 301 The recording terminal records the media file broadcasted by the head end of the live broadcast system through the live broadcast network, and identifies whether the recorded media file has a recording error.
• Step 303 When a recording error is recognized, the recording terminal generates a description information of the recording error.
• a recording error is recognized, different descriptions of recording errors may be generated according to different types of recording errors; the description information of the generated recording errors includes type information of recording errors. For example: When the media file broadcasted at the head end of the live broadcast system is transmitted in the data fragmentation mode, the recording terminal records the recording error including:
• the type value of the recording error can be set to 4.
• the information about the lost frame in the fragment including: the data fragmentation information of the lost video frame, the identification information and the time information of the correct video frame adjacent to the lost video frame, and correspondingly, the generated error type
• the description information may include: a type of recording error (type value is 4), data fragmentation information in which the lost video frame is located, identification information and time information of the correct video frame adjacent to the lost video frame.
• the identification information of the correct video frame adjacent to the lost video frame may include the start of the correct video frame adjacent to the lost video frame.
• Code prefix which can be the network abstraction layer in the H.264 video coding standard ( Ne twork Abs t rac t Layer, NAL for short) defined start code prefix ( s tar t _code_ pref ix ) parameter; if the live media file is in the network through a packet-oriented transmission format, with the lost video frame
• the identification information of the adjacent correct video frame may include a transmission protocol and a partial byte of the video frame; and the time information may include DTS or calendar time, and the like.
• the description information of the generated error type may include: a type of recording error (type value is 5), and correct data fragmentation information adjacent to the lost data fragment.
• the recording error includes both the loss of part of the data fragment and the incomplete data fragmentation information is incomplete, the data fragment with incomplete information may be processed in the manner of missing data fragmentation, and the recording error type is regarded as Bad type error type (type value is 5).
• the type value of the recording error can be set to 6, and the fragmentation needs to be recorded.
• the inner bad frame related information includes data fragmentation information in which the damaged video frame is located, identification information and time information of the correct video frame adjacent to the damaged video frame.
• the description information of the generated error type may include: a type of recording error (type value is 6), data fragmentation information in which the video frame is damaged, identification information and time information of the correct video frame adjacent to the damaged video frame.
• the type value of the recording error can be set to 7, and the bad piece related information, including the corrupted data fragmentation information, needs to be recorded. Identification information and time information of the correct data fragment adjacent to the damaged data fragment. .
• the description information of the generated error type may include: the type of the recording error (type value is 7), the corrupted data fragmentation information, the identification information and the time information of the correct data fragment adjacent to the corrupted data fragment.
• the type value of the recording error is set to other types, and the type value of the recording error can be set to 3, at which time the start and end point of the local area flower screen or mosaic phenomenon is recorded. Duration information. Due to the manual recognition of the recording error, considering the reaction error of the manual identification, the preset reaction time is required before and after the start and end of the recording time. The response time is 300 milliseconds.
• Step 305 The recording terminal sends a recording repair request to the P2P node server (the second network server), where the recording repair request includes description information of the recording error.
• Step 307 The P2P node server (the second network server) parses the received recording repair request, and broadcasts an inquiry request carrying the description information of the recording error to the other recording terminal.
• Step 309 The other recording terminal storing the recorded data matching the description information of the recording error sends an inquiry response to the P2P node server (the second network server).
• Step 31 The P2P node server (second network server) sends the other recording terminal information that sends the inquiry response to the recording terminal that issues the recording repair request.
• Step 31 The recording terminal acquires, according to other recording terminal information sent by the second network server, the recording data that matches the description information of the recording error to the other recording terminal, and the recorded data is used as the repairing information for the recording terminal to perform the recording error repair.
• Step 315 The recording terminal repairs the media file recorded by itself.
• the recording error of the media file that is recorded by itself is very flexible, for example: the recording terminal can automatically start the repair process of the recording error when receiving the repair information; or The repair process of the recording error is automatically started when the preset condition is met; or the repair process of the recording error is started when an external trigger (for example, the user manually starts).
• the recording terminal initiates a recording error repair the recording error of the recorded media file may be repaired according to the type of different recording errors according to the recording data of other recording terminals. The type of the recording error is framed or lost in the fragment.
• the recording terminal inserts the repair information from other recording terminals into the recording.
• the recording terminal uses the repair information from other recording terminals.
• the recording terminal replaces the corresponding data to be repaired in the media file recorded by the recording terminal with the repair information from the first network server.
• Step 317 After the recording terminal finishes repairing the media file recorded by itself, the recording terminal performs decoding test on the repaired segment.
• the recording terminal can automatically start the decoding test of the repaired segment in the idle state, for example: When the user does not use the recording terminal, the recording terminal can automatically start the decoding test of the repaired segment. , the video is not output during the decoding test.
• the recording terminal ends the recording error repair process; if the repaired segment fails the decoding test, the recording terminal regenerates the description of the recording error and resends the recording repair request to the second network server. Repeat steps 307-317 until the recording error repair is complete. Therefore, the decoding test by the repair segment can further ensure that the repaired data can be decoded normally, and the accuracy and reliability of the recording repair are guaranteed.
• the recording terminal performs the live recording of the media file through the live broadcast network, and can also record the media file recorded by the recording terminal through the two-way network that supports the recording terminal of the live recording service and other recording terminals based on the P2P communication technology.
• the error is fixed to ensure the reliability of the media file recording error repair.
• the description information of the recording error generated by the recording terminal includes the detailed information of the recording error, which is beneficial for other recording terminals to accurately obtain the matching repair information according to the description information, thereby facilitating the error correction. Improve the accuracy of the recording terminal for recording error repair;
• the recording terminal can perform the recording error repair processing according to the actual needs, and the method is flexible, which is beneficial to reduce the media file recording error and repair the line bandwidth. Further, after the recording terminal repairs the recording error in this embodiment, the repairing segment is detected, until the repairing segment ends the recording error repair process by the detecting party, thereby improving the recording error. Repair of reliability and accuracy.
• FIG. 4 is a flowchart of a fourth embodiment of a method for repairing a media file recording error according to the present invention.
• the bidirectional network architecture to which the recording terminal is communicatively connected includes a C/S network architecture.
• the P2P network architecture; the server supporting the live recording service in the C/S network architecture is the first network server; the P2P node server in the P2P network is the second network server in the embodiment of the present invention, and the P2P network may include multiple other recordings.
• Terminal As shown in FIG. 4, this embodiment includes:
• Step 401 The recording terminal records the media file broadcasted by the head end of the live broadcast system through the live broadcast network, and identifies whether the recorded media file has a recording error.
• Step 403 When a recording error is recognized, the recording terminal generates a description information of the recording error.
• Step 405 The recording terminal sends a recording repair request to the first network server and the P2P node server (the second network server), where the recording repair request includes description information of the recording error.
• the recording terminal may separately send a recording repair request to the first network server and the P2P node server (the second network server); or, the recording terminal may separately send the recording repair to the first network server and the P2P node server (the second network server) request.
• the recording terminal In the case of sending a recording repair request in succession, if the recording terminal first sends a recording repair request to a network server, when the recording terminal receives the correct response from the network server, it may abandon sending a recording repair request to another network server; otherwise, Another web server sends a recording repair request.
• the recording terminal may send the recording repair cancellation to another network server. request.
• the recording error is repaired by recording the heterogeneous two-way network associated with the terminal.
• the recording terminal fails to obtain the repair information in the interactive communication with a network server
• the network server can obtain the repair recording error.
• the recording information helps to improve the reliability of recording error repair.
• FIG. 5 is a schematic structural diagram of an embodiment of a recording terminal according to the present invention.
• the recording terminal of this embodiment includes a recording module 51, a generating module 52, a repair requesting module 53 and a repairing module 54.
• the recording module 51 is configured to record a media file played by the head end of the live broadcast system through the live broadcast network.
• the generating module 52 is configured to generate a recording when a recording error is recognized in the live recording of the media file. Wrong description.
• the repair request module 53 is configured to send a record repair request to the network side device, where the record repair request includes description information of the recording error generated by the generating module 52.
• the repairing module 54 is configured to repair the media file recorded by the recording module 51 according to the repair information when receiving the repair information sent by the network side device according to the description information.
• the repairing module 54 may further include: a receiving unit 541, an inserting unit 542, and a replacing unit 543.
• the receiving unit 541 is configured to receive the repair information sent by the network side device according to the description information of the recording error.
• the inserting unit 542 is configured to insert the repair information into the replacing unit 543 when the type of the recording error is frame dropping or losing, and replace the information with the repair information when the type of the recording error is a bad frame or a bad piece.
• the repair request module 53 may further include: a first repair request unit 531 and a second repair request unit 532.
• the first repair request unit 531 is configured to send a recording repair request to the first network server.
• the second repair request unit 532 is configured to send a recording repair request to the second network server.
• the repair request module 53 supports the function of transmitting the record repair request to the first network server and the second network server in turn, and also supports the function of simultaneously transmitting the record repair request to the first network server and the second network server.
• the recording terminal may further include: a timing module 55.
• the timing module 55 is configured to activate the first repair request unit 531 to send a recording repair request to the first network server and start a timer, and the repair module 54 activates the second when the correct response of the first network server is not received within a preset time. Repair request unit 532 sends a recording fix to the second web server Request
• the timing module 55 is configured to activate the second repair request unit 532 to send a recording repair request to the second network server and start a timer, and the repair module 54 activates when the correct response of the second network server is not received within a preset time.
• the first repair request unit 531 sends a recording repair request to the first web server.
• the recording terminal may further include: a repair request revocation module 56.
• the repair request revocation module 56 is configured to send a recording repair request to the second network server when the repair module 54 receives the first web server response; or, when the repair module 54 receives the second web server response, The first web server sends a recording repair request.
• the repair request module sends a record repair request including the description information of the recording error to the network side device through the two-way network between the recording terminal and the network side device, and the repair module compares the repair information sent by the network side device to the network side device.
• the recorded media file is repaired to ensure the reliability of the media file recording error repair.
• the recording error is fixed based on the bidirectional channel of the two-way network in this embodiment, the use of the line bandwidth can be reduced by the media file recording error repair.
• FIG. 6 is a schematic structural diagram of an embodiment of a network server according to the present invention.
• the network server of this embodiment includes: a network recording module 61, a storage module 62, and a recording management module 63.
• the network recording module 61 is used for performing live recording of media files.
• the storage module 62 is configured to store data recorded by the recording module.
• the recording management module 63 is configured to receive a recording repair request, where the recording repair request includes: description information of a recording error recognized by the recording terminal in a live recording of the media file; and acquiring, by the storage module, the recording data that matches the description information, And transmitting the recorded data to the recording terminal.
• the network server can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send the recording data of the network server matching the request to the recording terminal, so that the recording terminal can record the self.
• Media files are repaired to protect The reliability of the media file recording error repair.
• the repair module of the embodiment may perform the process of inserting or replacing the specific data segment in which the recording error occurs in the media file recorded by the recording terminal according to the received repair information, thereby reducing the media file recording error and repairing the line bandwidth. The use of it is beneficial to improve the utilization of line bandwidth.
• FIG. 7 is a schematic structural diagram of another embodiment of a network server according to the present invention.
• the network server of this embodiment includes: a repair request receiving module 71, a broadcast module 72, and a repair request response module 73.
• the repair request receiving module 71 is configured to receive a recording repair request, which includes description information of a recording error recognized by the recording terminal in the live recording of the media file.
• the broadcast module 72 is for broadcasting an inquiry request carrying the description information.
• the repair request response module 73 is configured to send another recording terminal information that sends the inquiry response to the recording terminal when receiving the inquiry response by the other recording terminal storing the recording data matching the description information.
• the network server can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send information of other recording terminals storing the recorded data matching the request to the recording terminal, so that the sending is performed.
• the recording terminal that records the error repair request can obtain the correct recording data from other recording terminals, and repair the media files recorded by itself, thereby ensuring the reliability of the media file recording error repair.
• FIG. 8 is a schematic structural diagram of a first embodiment of a system for repairing a media file recording error according to the present invention.
• the repair system for recording media file errors in this embodiment includes: a live system head end 81, a recording terminal 82, and a network side device 83; a live system head end 81 via a one-way communication network (eg, a live broadcast network, etc.)
• the recording terminal 82 and the network side device 83 are separately connected to the recording terminal 82 and the network side device 83 via a two-way communication network.
• the live system head end 81 is used to broadcast media files through a one-way communication network.
• the recording terminal 82 is configured to generate the description information of the recording error when the recording error is recognized in the live recording of the media file of the live system head 81; send the recording repair to the network side device 83 Re-requesting, the recording repair request includes description information of the recording error; when receiving the repair information sent by the network-side device 8.3 according to the description information, performing the media file recorded by the recording terminal according to the repair information repair.
• the network side device 83 is configured to send the repair information matching the recording error description information to the recording terminal 82 upon receiving the recording repair request sent by the recording terminal 82.
• the recording device when a recording error occurs during the recording of the media file at the head end of the live broadcast system, the recording device sends a description including the recording error to the network side device through the two-way network between the recording terminal and the network side device.
• the information is recorded and repaired, and the media files recorded by the network side device are repaired according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
• FIG. 9 is a schematic structural diagram of a second embodiment of a system for repairing a media file recording error according to the present invention.
• the network side device includes a first network server 831; the repair information sent by the network side device to the recording terminal includes the first network server. 831 Recorded recording data that matches the description of the recording error.
• the first network server 831 includes: a network recording module 8311, a storage module 8 312, and a recording management module 8 31 3.
• the network recording module 831 1 is used to record the media files of the live end 81 of the live broadcast system.
• the storage module 8312 is used to store data recorded by the network recording module 831 1.
• the recording management module 831 3 is configured to receive a recording repair request sent by the recording terminal 82, where the recording repair request includes description information of a recording error recognized by the recording terminal 82 in the live recording of the media file; and the description information is obtained from the storage module 8312. The recorded data is matched, and the recorded data is transmitted to the recording terminal 82.
• FIG. 10 is a schematic structural diagram of a third embodiment of a system for repairing a media file recording error according to the present invention.
• the network side device includes a second network server 832 and other recording terminals 833; and the network side device sends repair information to the recording terminal. Including: Recording data recorded by other recording terminal 833 that matches the description information.
• the second network server 832 includes: a repair request receiving module 8321, a broadcast module 8322, and a repair request response module 8323.
• the repair request receiving module 8321 is configured to receive a recording repair request, which includes description information of the recording error recognized by the recording terminal 82 in the live recording of the media file.
• the broadcast module 8322 is for broadcasting an inquiry request carrying the description information.
• the repair request response module 8323 is configured to transmit, to the recording terminal 82, other recording terminal information that transmits the inquiry response when the other recording terminal 833 that has received the recording data matching the description information receives the inquiry response to the second network server 832.
• the other recording terminal 833 is configured to determine, according to the description information carried in the inquiry request, whether the storage data matching the description information is stored, when the other recording terminal 833 itself stores the same When the recorded data matching the information is described, an inquiry response is sent to the second web server 832.
• the recording repair request may be sent to the second network server through a two-way network (P2P network architecture) that supports the recording terminal of the live recording service, the second network server, and other recording terminals, And acquiring, according to the other recording terminal information that is recorded by the second network server and storing the recording data that matches the recording error description information, acquiring the repair information to the corresponding other recording terminal, thereby realizing the repairing of the recording error in the media file recorded by the recording terminal, thereby Guarantee the reliability of media file recording error repair
• FIG. 11 is a schematic structural diagram of a fourth embodiment of a system for repairing a media file recording error according to the present invention.
• the network side device may include a first network server 831 in a first two-way network architecture (such as a C/S network architecture), and a second two-way network.
• the recording terminal 82 is further configured to separately send a recording repair request to the first web server 831 and the second web server 832, respectively.
• the recording terminal 82 may respectively send a recording repair request to the first network server 831 and the second network server 832; or, the recording terminal 82 may simultaneously send a recording repair request to the first network server 831 and the second network server 832, respectively.
• the recording terminal 82 may abandon sending a recording repair request to another network server; otherwise, Send a recording fix request to another web server.
• the recording terminal 82 For the case where the recording terminal 82 simultaneously sends a recording repair request to the first network server 831 and the second network server 832, if the recording terminal 82 receives any of the network servers to return to the correct response, the recording terminal can go to another network server. Send a recording fix and a charge request.
• the implementation of the recording error repair is implemented based on the first two-way network in which the recording terminal 82 communicates with the first network server 831.
• the description of the refinement function module of the second network server 832 refer to the description of FIG. 10, and the second bidirectional network based on the communication between the recording terminal 82, the second web server 832 and the other recording terminal 833 is implemented.
• the implementation of the recording error repair refer to the description of the corresponding embodiment in FIG. 3, and details are not described herein again.
• the recording error is repaired by recording the heterogeneous two-way network associated with the terminal.
• the recording terminal fails to obtain the repair information in the interactive communication with a network server
• the network server can obtain the repair recording error.
• the recording information helps to improve the reliability of recording error repair.
• modules in the device in the embodiment can be implemented according to the implementation.
• the description is distributed among the devices of the embodiment, and the corresponding changes may also be made in one or more devices different from the embodiment.
• the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

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• Computer Networks & Wireless Communication (AREA)
• Databases & Information Systems (AREA)
• Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
• Television Signal Processing For Recording (AREA)

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• 2008
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• 2009
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