On-site video recording method and device

Abstract

The invention relates to an on-site video recording method and device, and belongs to the technical field of video acquisition. Comprising the following steps: receiving a first session invitation for recording a mobile phone; responding to the first session invitation, and connecting the recording platform and the recording mobile phone; receiving audio and video data of the recording mobile phone, and storing the audio and video data to the recording platform; the method comprises the following steps: when a recording mobile phone or a recording platform is in a mute state, periodically sending an active instruction to maintain call continuity between the recording mobile phone and the recording platform, the active instruction comprises a first instruction of sending a mute frame from the recording platform to the recording mobile phone or returning audio and video data from the recording platform to the recording mobile phone and a second instruction of sending a UPDATE signaling from the recording mobile phone to the recording platform; receiving a session termination instruction of recording the mobile phone; and closing the recording platform, and ending recording of the audio and video data. The flexibility of video recording is improved, and the data security is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of video acquisition, and in particular relates to a method and device for recording on-site video. Background Art

[0002] On-site video recording refers to the process of using devices (such as smartphones, cameras, etc.) to capture and save real-time video of events happening on site in a specific place or situation. It is usually used to record on-site conditions in real time, and is common in scenes such as meeting minutes, on-site interviews, and accident investigations.

[0003] During the video recording process, on-site video recording can record the entire recording process, retain the video, and prevent subsequent disputes or conflicts. These video records can be used for court trials, internal investigations or other legal procedures to ensure the legality and transparency of the recording behavior. Recording on-site videos can reduce video recording costs, reduce the number of devices carried, increase the flexibility of video recording, and improve data security on the premise of meeting video recording needs, so as to achieve timely preservation of video forensic data and improve the video's ability to be tamper-proof.

[0004] However, existing on-site video recording often requires dedicated audio and video recording equipment. Recording personnel need to carry a lot of equipment, and the cost of purchase, operation and maintenance is high. The collection and management of audio and video data is inconvenient. The on-site video recording method through wifi or 4G data connection backhaul can no longer meet the data security requirements. At the same time, the flexibility of video recording is also challenged. Summary of the invention

[0005] In view of the above deficiencies in the prior art, the purpose of the invention is to provide a method and device for on-site video recording, which can reduce the cost of video recording, reduce the number of devices carried, increase the flexibility of video recording and improve data security, and realize timely preservation of video data, facilitate remote video extraction and playback by recording personnel, and improve the efficiency of video recording.

[0006] A first aspect of the present invention provides a method for recording a live video, the method comprising: S1, receiving the first session invitation of the recording mobile phone; S2, in response to the first session invitation, connecting the recording platform and the recording mobile phone; S3, receiving the audio and video data of the recorded mobile phone and saving it to the recording platform; S4, when the recording mobile phone or the recording platform is in a silent state, active instructions are periodically sent to maintain the call continuity between the recording mobile phone and the recording platform, wherein the active instructions include a first instruction to send a silent frame from the recording platform to the recording mobile phone or to transmit audio and video data from the recording platform to the recording mobile phone and a second instruction to send an UPDATE signaling from the recording mobile phone to the recording platform; S5, receiving a session termination instruction from the recording mobile phone; S6, close the recording platform and end the recording of audio and video data.

[0007] Furthermore, before S4, it also includes: The threshold in VAD detection is used to determine whether the recording phone or platform is in silent state.

[0008] Furthermore, by periodically sending active instructions, specifically: Active instructions are sent periodically based on the SIP protocol and RTP protocol.

[0009] Furthermore, after S6, it also includes: S7, turn on the file format conversion mode of the recording platform and convert the audio and video data into mp4 format.

[0010] Furthermore, after S7, it also includes: Receive the second session invitation of the recording mobile phone to play back the audio and video data or play back the audio and video data by accessing the recording platform.

[0011] Further, receiving the second session invitation of the recording mobile phone to play back the audio and video data specifically includes: Dial the playback service number through the recording mobile phone to generate a second session invitation to connect to the recording platform; In response to the second session invitation, playing a prompt tone, wherein the prompt tone includes a prompt to enter a playback mobile phone number and a prompt to enter a playback time; Receive input information from the recording mobile phone, and play back audio and video data corresponding to the input information to the recording mobile phone.

[0012] A second aspect of the present invention provides a live video recording device for implementing any live video recording method of the first aspect, the device comprising: A first receiving module, used for receiving a first conversation invitation of a recording mobile phone; A response module, used for responding to the first session invitation and connecting the recording platform and the recording mobile phone; The saving module is used to receive the audio and video data of the recorded mobile phone and save it to the recording platform; A maintenance module, used to maintain the call continuity between the recording mobile phone and the recording platform by periodically sending active instructions when the recording mobile phone or the recording platform is in a silent state, wherein the active instructions include a first instruction to send a silent frame from the recording platform to the recording mobile phone or to transmit audio and video data from the recording platform to the recording mobile phone and a second instruction to send an UPDATE signaling from the recording mobile phone to the recording platform; A second receiving module is used to receive a session termination instruction from the recording mobile phone; The closing module is used to close the recording platform and end the recording of audio and video data.

[0013] Furthermore, the on-site video recording device also includes: The threshold in VAD detection is used to determine whether the recording phone or platform is in silent state.

[0014] Furthermore, by periodically sending active instructions, specifically: Active instructions are sent periodically based on the SIP protocol and RTP protocol.

[0015] Furthermore, the on-site video recording device also includes: The conversion module is used to enable the file format conversion mode of the recording platform and convert the audio and video data into MP4 format.

[0016] Furthermore, the on-site video recording device also includes: Receive the second session invitation of the recording mobile phone to play back the audio and video data or play back the audio and video data by accessing the recording platform.

[0017] Further, receiving the second session invitation of the recording mobile phone to play back the audio and video data specifically includes: Dial the playback service number through the recording mobile phone to generate a second session invitation to connect to the recording platform; In response to the second session invitation, playing a prompt tone, wherein the prompt tone includes a prompt to enter a playback mobile phone number and a prompt to enter a playback time; Receive input information from the recording mobile phone, and play back audio and video data corresponding to the input information to the recording mobile phone.

[0018] A third aspect of the present invention provides a live video recording system, comprising: a memory and one or more processors.

[0019] One or more application programs are stored in the memory, and the one or more application programs are suitable for being executed by one or more processors to implement the live video recording method of the first aspect.

[0020] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored. The computer program can be loaded and executed by a processor to implement the on-site video recording method according to the first aspect.

[0021] The beneficial effects of the present invention are as follows: In an embodiment of the present invention, the recording personnel dials a special service number when recording a video, and the remote call platform automatically connects the audio and video call and records the audio and video data remotely. Through real-time remote video recording, the video data is saved in time. At the same time, during the recording process, the platform adopts the method of audio and video feedback or periodically sending silent frames to avoid hanging up caused by call timeout. In the entire process of audio and video data recording, the two-way verification of call records and audio and video time records is used to improve the video's ability to be tamper-proof, reduce the cost of video recording, reduce the number of devices carried, increase the flexibility of video recording, and improve data security. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are only used to illustrate specific embodiments and are not considered to limit the present invention. In the entire drawings, the same reference symbols represent the same components. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a flowchart of a method for recording live video provided by an embodiment of the present invention; Figure 2 It is a complete flow chart of video recording and playback provided by an embodiment of the present invention; Figure 3 It is a flowchart of a method for recording live video provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of a video playback process provided by an embodiment of the present invention; Figure 5 is a structural schematic diagram of a live video recording device provided by an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a live video recording system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present invention.

[0025] Furthermore, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concepts disclosed in the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of methods and systems consistent with some aspects of the present invention as detailed in the appended claims.

[0028] The present invention proposes a method and device for on-site video recording, in order to solve the problems that existing on-site video recording requires special audio and video recording equipment, recording personnel need to carry a lot of equipment, the cost of purchase, operation and maintenance is high, the collection and management of audio and video data is inconvenient, the existing recording method can no longer meet the data security, and the flexibility of video recording is also challenged.

[0029] Method Embodiment Refer to the instruction manual Figure 1 , showing a flow chart of a live video recording method provided by an embodiment of the present invention.

[0030] Reference Manual Attached Figure 2 , showing a complete flow chart of video recording and playback provided by an embodiment of the present invention.

[0031] exist Figure 2In the recording process, the recording phone sends a session invitation (INVITE) to the recording platform, and the platform responds with a 200 OK signaling and establishes a connection. After that, the audio and video data are transmitted via the RTP protocol, using AMR-WB (audio) and H264 (video) encoding. At the same time, the recorded audio and video data is stored in the database of the recording platform in RTP or MP4 format. The recording personnel can use another recording phone or computer device to send a request to the platform using the SIP protocol to play back or view the recorded video.

[0032] Reference Manual Attached Figure 3 , shows a flow chart of another on-site video recording method provided by an embodiment of the present invention.

[0033] exist Figure 3 In the recording, the mobile phone sends a SIP INVITE request to AS (dial 96110) to request to establish a session connection. AS confirms receipt of the INVITE request and returns 200 OK, indicating that the session is successfully established. At the same time, audio and video data are transmitted between the mobile phone and AS through AMR-WB (wideband voice coding) and H264 (video coding). AS starts to prepare files and export the received audio and video data to ensure that the recorded content is saved. Then the mobile phone sends an UPDATE request for update. AS responds with 200 OK to confirm that the update is successful. When the recording is completed, the mobile phone sends a BYE request to end the session connection. AS returns 200 OK and closes the file, completing the recording and storage.

[0034] An embodiment of the present invention provides a method for recording a live video, the method comprising: Specifically, the method includes steps S1 to S6.

[0035] S1, receiving the first session invitation of the recording mobile phone.

[0036] Among them, the recording mobile phone refers to the dedicated mobile phone used by the recording personnel during the recording process, which is used to dial a specific number to start video recording. The first session invitation refers to the session request sent through the SIP protocol, which is used to establish an audio and video communication connection between the mobile phone and the recording platform.

[0037] It should be noted that by recording the mobile phone dialing a specific service number to generate the first session invitation, this method simplifies the process of starting video recording. Through automated SIP session invitations, recording personnel can quickly establish a connection with the recording platform, reducing the complexity of manual operations and improving work efficiency.

[0038] Specifically, the recording mobile phone can dial a recording service phone to generate a first session invitation. The recording service phone refers to a specific service phone number dialed by the recording personnel for video recording, such as 96110, which is mainly dialed using SIP INVITE (Session Initiation Protocol INVITE).

[0039] Specifically, generating the first session invitation by dialing a special recording service phone number through the recording mobile phone simplifies the process of starting video recording for the recording personnel, making the recording operation more convenient and efficient. The recording personnel does not need to perform complicated manual settings, but only needs to dial the designated number to automatically establish a connection with the recording platform and start audio and video recording.

[0040] S2, in response to the first session invitation, connecting the recording platform and the recording mobile phone.

[0041] Among them, the recording platform is a system or server specially used to receive and store audio and video data during the video recording process, and connection refers to establishing an audio and video communication connection between the recording platform and the recording mobile phone.

[0042] It should be noted that by connecting the recording platform and the recording mobile phone, the rapid response and automated operation of the recording process are ensured. This process avoids human operational errors through the platform's timely response to session invitations and automatic connection, while shortening the time to establish recording. This ensures that important audio and video information is recorded and stored in a timely and accurate manner, reduces the risk of data loss, and improves the reliability and efficiency of evidence collection during video recording.

[0043] In actual application, all recording processes are carried out in public and with the knowledge of the recorded subjects.

[0044] S3, receiving the audio and video data of the recorded mobile phone and saving it to the recording platform.

[0045] Among them, audio and video data refers to the live audio and video files recorded and transmitted by the recording mobile phone. As a video, by receiving the audio and video data of the recording mobile phone and saving it to the recording platform, real-time storage of the live video is realized to ensure data security. The audio and video data are saved in the platform immediately after transmission, avoiding the limitations of mobile phone storage or the risk of data loss. At the same time, the centralized management method makes the subsequent data retrieval and analysis more convenient, providing an efficient and reliable storage solution for video recording, ensuring the integrity and legality of the recording process.

[0046] In a possible implementation manner, before S4, the method further includes: The threshold in VAD detection is used to determine whether the recording phone or platform is in silent state.

[0047] Among them, VAD (Voice Activity Detection) is used to distinguish between voice signals and non-voice signals (such as silence or background noise). It determines whether there is voice by analyzing the audio signal. The threshold is a preset value used to determine whether a certain signal (such as volume) exceeds this value. The threshold in VAD detection determines the standard for distinguishing voice activity from silent state. The silent state means that when no voice signal is detected or the signal is lower than the threshold, the device is considered to be in silent state.

[0048] It should be noted that by using VAD and thresholds to determine the mute state, unnecessary audio data transmission can be effectively reduced, bandwidth consumption and storage space usage can be reduced, while ensuring that only actual voice content is recorded.

[0049] S4, when the recording phone or the recording platform is in silent state, active instructions are periodically sent to maintain the call continuity between the recording phone and the recording platform, wherein the active instructions include a first instruction to send a silent frame from the recording platform to the recording phone or to transmit audio and video data from the recording platform to the recording phone and a second instruction to send an UPDATE signaling from the recording phone to the recording platform.

[0050] Among them, the active command refers to a specific signal or command sent to maintain the call connection when the device is muted, ensuring that the call will not be automatically interrupted due to the lack of audio data transmission. The silent frame refers to a frame sent instead of the actual audio data when the audio signal is in a muted state, which is used to maintain the activity of the call. The UPDATE (Session InitiationProtocol (SIP) UPDATE Request) signaling is a signaling in the SIP protocol, which is used to update the current session status or parameters to ensure that the session remains connected.

[0051] It should be noted that by sending active commands in silent state, the system can avoid disconnection due to audio data interruption, thereby ensuring the integrity and stability of the recording process. This is particularly important for forensic scenarios and can avoid data loss or forensic interruption due to environmental noise or recording pauses. In addition, the use of standardized communication methods such as SIP and RTP protocols allows the system to be seamlessly compatible with different devices and platforms, with high flexibility and adaptability.

[0052] In a possible implementation, by periodically sending an active instruction, specifically: Active instructions are sent periodically based on the SIP protocol and RTP protocol.

[0053] Among them, the SIP protocol (Session Initiation Protocol) is a protocol used to establish, modify and terminate multimedia communication sessions (such as audio, video, etc.), and the RTP protocol (Real-time Transport Protocol) refers to a protocol used to transmit audio and video data on the network, and is particularly suitable for the transmission of real-time data.

[0054] Specifically, by periodically sending active instructions based on the SIP and RTP protocols, the system can maintain the stability of the session even when both parties on the call are in silent state, avoiding automatic disconnection due to no data transmission.

[0055] S5, receiving a session termination instruction from the recording mobile phone.

[0056] Among them, the session termination command refers to the signal sent by the recording mobile phone, which is used to notify the recording platform to end the current audio and video recording. Through the session termination command, the system can end the recording task in an orderly and timely manner after the audio and video recording is completed. This mechanism can effectively prevent unnecessary resource occupation, such as waste of storage space caused by recording for too long. In addition, clear termination instructions ensure the integrity and security of the data, avoid data loss due to accidental disconnection or disorderly recording cessation, thereby improving the reliability and controllability of the video recording system.

[0057] S6, close the recording platform and end the recording of audio and video data.

[0058] It should be noted that during the video recording process, clear session termination instructions can ensure the integrity of the video data and ensure that the recording ends at the appropriate time, preventing recording loss or resource waste due to operational errors. In addition, a clear termination mechanism provides convenience for subsequent video management and calls, and improves the efficiency of the video recording workflow.

[0059] In a possible implementation manner, after S6, the method further includes: S7, turn on the file format conversion mode of the recording platform and convert the audio and video data into mp4 format.

[0060] Among them, the file format conversion mode refers to the process of converting the recorded audio and video data from the original format to another standardized format (such as MP4 format). MP4 (MPEG-4 Part 14, Moving Picture Experts Group Part 4 No. 14 format) is a common multimedia container format used to store video, audio, subtitles and other data. It has the advantages of high compression rate and good compatibility, and is widely used in audio and video storage and transmission.

[0061] It should be noted that the MP4 format has a high compression efficiency while ensuring the quality of audio and video, which can effectively save storage space and reduce bandwidth consumption. For video recording, this format conversion helps to improve the accessibility and portability of recorded videos, ensure the consistency and reliability of data in different devices and scenarios, and facilitate long-term storage and archiving.

[0062] Reference Manual Attached Figure 4 , showing a schematic diagram of a video playback process provided by an embodiment of the present invention.

[0063] The mobile phone sends a SIP INVITE request to AS (dial 96110), requesting to connect to the server for playback operation. AS confirms receipt of the request and returns 200 OK, indicating that the session is successfully established. Then AS plays a prompt tone to inform the user that he can enter instructions and is ready to receive the user's playback instructions. After the user enters the playback instruction, AS performs intelligent file selection according to the instruction and finds the corresponding audio and video file. AS transmits the played audio and video files to the mobile phone through AMR-WB (voice encoding) and H264 (video encoding). When the playback is completed, the mobile phone sends a BYE request to end the session, and AS returns 200 OK to confirm the end of the session.

[0064] In a possible implementation manner, after S7, the method further includes: Receive the second session invitation of the recording mobile phone to play back the audio and video data or play back the audio and video data by accessing the recording platform.

[0065] Among them, the second session invitation refers to another session request sent by the recording mobile phone, which is used to establish a new connection with the recording platform to play back the previously recorded audio and video data. Through the second session invitation or direct access to the recording platform for audio and video playback, flexible video viewing and review can be achieved, ensuring that the recording personnel can retrieve and play back the required audio and video data at any time. This not only improves the efficiency of video recording, but also facilitates event review and examination, especially in scenarios such as interrogation or court. This playback mechanism can ensure the integrity and accuracy of the video, avoid data loss or tampering, provide reliable support for the event, and help improve the transparency of video recording.

[0066] In a possible implementation, receiving a second session invitation from a recording mobile phone to play back audio and video data specifically includes: Dial the playback service number through the recording mobile phone to generate a second session invitation to connect to the recording platform; Among them, the special playback service number refers to a dedicated service number used to play back recorded audio and video data. Dialing this number can initiate a connection with the recording platform, similar to dialing a specific hotline to activate a specific function.

[0067] In response to the second session invitation, a prompt tone is played, wherein the prompt tone includes a prompt to input a playback mobile phone number and a prompt to input a playback time.

[0068] Among them, the prompt tone refers to the audio prompt played when the recording platform receives the second session invitation, which is usually used to guide the recording personnel to complete the next steps or operations. The playback mobile phone number refers to the mobile phone number that needs to be entered, which is used to identify the recording personnel or specific session data, so as to retrieve the audio and video recording content related to the mobile phone number. The playback time refers to the specific time that the recording personnel needs to enter, which is used to locate and play back the audio and video data recorded during this time period.

[0069] Receive input information from the recording mobile phone, and play back audio and video data corresponding to the input information to the recording mobile phone.

[0070] Among them, input information refers to the data entered by the recording person through the recording mobile phone during the playback operation, including the playback mobile phone number and playback time, etc., which is used to retrieve audio and video data related to specific time and people.

[0071] Specifically, by dialing a specific number to establish a connection with the recording platform, the required video can be accurately located through simple input, avoiding tedious manual search, improving the work efficiency of the recording personnel, and at the same time, ensuring the accurate retrieval of audio and video, which helps to improve the security and reliability of data during video recording. This playback method is particularly suitable for quickly obtaining the required video in an emergency, enhancing the flexibility of video recording work.

[0072] In actual use, the on-site video recording method adopts a mobile phone terminal with video call capabilities such as 4G or 5G networks. The recording personnel dials a special service number when recording, and the remote call platform automatically connects the audio and video call and records the audio and video data remotely. The fixing and uploading of audio and video data do not require offline human intervention, and are real-time and automatic. In the process of video viewing, you can dial the special service number through the mobile phone, input the required video by voice or key to play it to the mobile phone terminal, or directly view the video data through a computer. This method reduces the cost of video recording, reduces the number of devices carried, increases the flexibility of video recording, improves data security, and improves the ability of the video to be tamper-proof, while meeting the video recording needs.

[0073] The beneficial effects of the present invention are as follows: In the embodiment of the present invention, when recording a video, the recording personnel dials a special service number, and the remote call platform automatically connects the audio and video call and records the audio and video data remotely. Through real-time remote video recording, the video data is saved in time. At the same time, during the recording process, the platform adopts the method of audio and video feedback or periodically sending silent frames to avoid hanging up caused by call timeout. In the whole process of recording audio and video data, the two-way verification of call records and audio and video time records is used to improve the video's ability to be tamper-proof, reduce the cost of video recording, reduce the number of devices carried, increase the flexibility of video recording, and improve data security. Device Embodiment Another specific embodiment of the present invention discloses a live video recording device, which is used to implement any live video recording method in the method embodiment. The live video recording device 20 includes: The first receiving module 201 is used to receive a first conversation invitation of a recording mobile phone.

[0074] The response module 202 is used to connect the recording platform and the recording mobile phone in response to the first session invitation.

[0075] The saving module 203 is used to receive the audio and video data of the recorded mobile phone and save it to the recording platform.

[0076] The maintenance module 204 is used to maintain the call continuity between the recording mobile phone and the recording platform by periodically sending active instructions when the recording mobile phone or the recording platform is in a silent state, wherein the active instructions include a first instruction for sending a silent frame from the recording platform to the recording mobile phone or for transmitting audio and video data from the recording platform to the recording mobile phone and a second instruction for sending an UPDATE signaling from the recording mobile phone to the recording platform.

[0077] The second receiving module 205 is used to receive a session termination instruction from the recording mobile phone.

[0078] The closing module 206 is used to close the recording platform and end the recording of the audio and video data.

[0079] In a possible implementation manner, the on-site video recording device further includes: The threshold in VAD detection is used to determine whether the recording phone or platform is in silent state.

[0080] In a possible implementation, by periodically sending the activity instruction, specifically: periodically sending the activity instruction according to the SIP protocol and the RTP protocol.

[0081] In a possible implementation manner, the on-site video recording device further includes: The conversion module is used to enable the file format conversion mode of the recording platform and convert the audio and video data into MP4 format.

[0082] In a possible implementation manner, the on-site video recording device further includes: Receive the second session invitation of the recording mobile phone to play back the audio and video data or play back the audio and video data by accessing the recording platform.

[0083] In a possible implementation, receiving a second session invitation from a recording mobile phone to play back audio and video data specifically includes: Dial the playback service number through the recording mobile phone to generate a second session invitation to connect to the recording platform.

[0084] In response to the second session invitation, a prompt tone is played, wherein the prompt tone includes a prompt to input a playback mobile phone number and a prompt to input a playback time.

[0085] Receive input information from the recording mobile phone, and play back audio and video data corresponding to the input information to the recording mobile phone.

[0086] The device provided in the embodiment of the present invention can implement each process and step in the above method embodiment, and can obtain the same or similar technical effects. To avoid repetition, the present invention will not go into details.

[0087] The beneficial effects of the present invention are as follows: In the embodiment of the present invention, when recording a video, the recording personnel dials a special service number, and the remote call platform automatically connects the audio and video call and records the audio and video data remotely. Through real-time remote video recording, the video data is saved in time. At the same time, during the recording process, the platform adopts the method of audio and video feedback or periodically sending silent frames to avoid hanging up caused by call timeout. In the whole process of recording audio and video data, the two-way verification of call records and audio and video time records is used to improve the video's ability to be tamper-proof, reduce the cost of video recording, reduce the number of devices carried, increase the flexibility of video recording, and improve data security. System Example Reference Manual Attached Figure 6 , showing a schematic structural diagram of a live video recording system provided by an embodiment of the present invention.

[0088] The present invention provides a live video recording system 30 , comprising: a memory 303 and one or more processors 301 .

[0089] One or more application programs are stored in the memory 303 , and the one or more application programs are suitable for being executed by the one or more processors 301 to implement the on-site video recording method of the method embodiment.

[0090] The on-site video recording system 30 includes: a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, for example, via a bus 302.

[0091] The structure of the on-site video recording system 30 does not constitute a limitation on the embodiment of the present invention.

[0092] Processor 301 may be a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. Processor 301 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0093] The bus 302 may include a path to transmit information between the above components. The bus 302 may be a PCI bus or an EISA bus, etc. The bus 302 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0094] The memory 303 can be a ROM or other type of static storage device that can store static information and instructions, a RAM or other type of dynamic storage device that can store information and instructions, or an EEPROM, a CD-ROM or other optical disk storage, an optical disk storage (including a compressed optical disk, a laser disk, an optical disk, a digital versatile disk, a Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0095] Computer Readable Storage Medium Embodiments The present invention provides a computer-readable storage medium having a computer program stored thereon. The computer program can be loaded and executed by a processor to implement the on-site video recording method of the first aspect.

[0096] The applicant of the present invention has made a detailed explanation and description of the implementation examples of the present invention in conjunction with the drawings in the specification. However, those skilled in the art should understand that the above implementation examples are only preferred implementation schemes of the present invention, and the detailed description is only to help readers better understand the spirit of the present invention, but not to limit the scope of protection of the present invention. On the contrary, any improvements or modifications based on the inventive spirit of the present invention should fall within the scope of protection of the present invention.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any changes or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for recording live video, characterized in that: The on-site video recording method comprises: S1, receiving the first session invitation of the recording mobile phone; S2, in response to the first session invitation, connecting the recording platform and the recording mobile phone; S3, receiving the audio and video data of the recording mobile phone and saving it to the recording platform; S4, when the recording mobile phone or the recording platform is in a silent state, periodically sending active instructions to maintain the call continuity between the recording mobile phone and the recording platform, wherein the active instructions include a first instruction to send a silent frame from the recording platform to the recording mobile phone or to return the audio and video data from the recording platform to the recording mobile phone and a second instruction to send an UPDATE signaling from the recording mobile phone to the recording platform; S5, receiving a session termination instruction from the recording mobile phone; S6, closing the recording platform and ending the recording of the audio and video data.

2. The method for recording live video according to claim 1, characterized in that: Before the S4, it also includes: It is determined whether the recording mobile phone or the recording platform is in a silent state through a threshold in VAD detection.

3. The on-site video recording method according to claim 1, characterized in that: The periodic sending of active instructions is specifically: Active instructions are sent periodically based on the SIP protocol and RTP protocol.

4. The on-site video recording method according to claim 1, characterized in that: After S6, the method further includes: S7, start the file format conversion mode of the recording platform and convert the audio and video data into mp4 format.

5. The method for recording live video according to claim 4, characterized in that: After S7, the method further includes: Receive a second session invitation from the recording mobile phone to play back the audio and video data or play back the audio and video data by accessing the recording platform.

6. The method for recording live video according to claim 5, characterized in that: The receiving of the second session invitation from the recording mobile phone to play back the audio and video data specifically includes: Dial the playback special service number through the recording mobile phone to generate a second session invitation to connect to the recording platform; In response to the second session invitation, playing a prompt tone, wherein the prompt tone includes a prompt to enter a playback mobile phone number and a prompt to enter a playback time; Receive input information from the recording mobile phone, and play back audio and video data corresponding to the input information to the recording mobile phone.

7. A live video recording device, characterized in that: The on-site video recording device comprises: A first receiving module, used for receiving a first conversation invitation of a recording mobile phone; A response module, configured to connect the recording platform and the recording mobile phone in response to the first session invitation; A saving module, used to receive the audio and video data of the recording mobile phone and save it to the recording platform; A maintenance module, used to maintain the call continuity between the recording mobile phone and the recording platform by periodically sending active instructions when the recording mobile phone or the recording platform is in a silent state, wherein the active instructions include a first instruction for sending a silent frame from the recording platform to the recording mobile phone or for transmitting the audio and video data from the recording platform to the recording mobile phone and a second instruction for sending an UPDATE signaling from the recording mobile phone to the recording platform; A second receiving module is used to receive a session termination instruction from the recording mobile phone; The closing module is used to close the recording platform and end the recording of the audio and video data.

8. The live video recording device according to claim 7, characterized in that: The on-site video recording device also includes: It is determined whether the recording mobile phone or the recording platform is in a silent state through a threshold in VAD detection.

9. The live video recording device according to claim 7, characterized in that: The periodic sending of active instructions is specifically: Active instructions are sent periodically based on the SIP protocol and RTP protocol.

10. The live video recording device according to claim 9, characterized in that: The on-site video recording device also includes: The conversion module is used to start the file format conversion mode of the recording platform and convert the audio and video data into MP4 format.

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