CN110719495A - Video data processing method and system - Google Patents
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Abstract
The embodiment of the invention provides a method and a system for processing video data, wherein the method comprises the following steps: the first video networking node server receives video data from the second video networking node server, and analyzes the video data to obtain NALU; if NALU indicates that the format type of the video data is in the first video format, performing program stream packaging operation on the video data to obtain a program stream packet with a first format identifier; if NALU indicates that the format type of the video data is in the second video format, performing program stream packaging operation on the video data to obtain a program stream packet with a second format identifier; and sending the program stream packets to an Ethernet monitoring platform, and analyzing and playing the program stream packets by the Ethernet monitoring platform according to the first format identifier or the second format identifier. The embodiment of the invention improves the accuracy of analyzing and playing the program stream packet by the Ethernet monitoring platform.
Description
Technical Field
The present invention relates to the field of video networking technologies, and in particular, to a video data processing method and a video data processing system.
Background
The video network is a special network for transmitting high-definition video and a special protocol at high speed based on Ethernet hardware, is a higher-level form of the Internet and is a real-time network.
At present, a video network sharing platform server packages and encapsulates received video data according to a uniform format type, and then sends the video data to a third-party platform, so that the third-party platform cannot correctly analyze and play the received video data packets.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a video data processing method and a corresponding video data processing system that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention discloses a method for processing video data, where the method is applied to a video network and an ethernet network, the video network includes a first video network node server and a second video network node server, the ethernet network includes an ethernet monitoring platform, and the first video network node server is connected to the second video network node server and the ethernet monitoring platform, respectively, and the method includes: the first video networking node server receives video data from the second video networking node server and analyzes the video data to obtain a network abstraction layer unit NALU of the video data; if the network abstraction layer unit NALU indicates that the format type of the video data is in a first video format, the first video networking node server performs program stream packaging and packaging operation on the video data to obtain a program stream packet with a first format identifier; if the network abstraction layer unit NALU indicates that the format type of the video data is in a second video format, the first video networking node server performs program stream packaging and packaging operation on the video data to obtain a program stream packet with a second format identifier; and the first video networking node server sends the program stream packets to the Ethernet monitoring platform, and the Ethernet monitoring platform is used for analyzing and playing the program stream packets according to the first format identifier or the second format identifier.
Optionally, the parsing, by the first internet of view node, the video data to obtain a network abstraction layer unit NALU of the video data includes: and the first video networking node server analyzes the video data to obtain the network abstraction layer header data and the original data byte stream of the video data.
Optionally, if the network abstraction layer unit NALU indicates that the format type of the video data is in the first video format, the first video network node server performs a program stream packing operation on the video data to obtain a program stream packet with a first format identifier, where the program stream packet includes: if the network abstraction layer header data indicates that the format type of the video data is H.264 format, the first video network node server packages the sequence parameter set, the image parameter set and the instantaneous decoder refresh of the video data into a program stream packet with 0x1B identification.
Optionally, if the network abstraction layer unit NALU indicates that the format type of the video data is in the second video format, the first video network node server performs a program stream packing operation on the video data to obtain a program stream packet with a second format identifier, where the program stream packet includes: if the network abstraction layer header data indicates that the format type of the video data is H.265 format, the first video network node server packages the sequence parameter set, the image parameter set and the live decoder refresh of the video data as a program stream packet with 0x24 identification.
Optionally, before the first video networking node server receives the video data from the second video networking node server, and parses the video data to obtain a network abstraction layer unit NALU of the video data, the method further includes: the first video networking node server receives a first video data monitoring request from the Ethernet monitoring platform and converts the first video data monitoring request into a second video data monitoring request supporting a video networking protocol; and the first video network node server sends the second video data monitoring request to the second video network node server, the second video network node server is used for judging whether the second video data monitoring request is legal or not, and if so, the operation of sending the video data to the first video network node server is executed.
The embodiment of the invention also discloses a video data processing system, which is applied to the video network and the Ethernet, wherein the video network comprises a first video network node server and a second video network node server, the Ethernet comprises an Ethernet monitoring platform, the first video network node server is respectively connected with the second video network node server and the Ethernet monitoring platform, and the first video network node server comprises: the analysis module is used for receiving the video data from the second video networking node server and analyzing the video data to obtain a network abstraction layer unit NALU of the video data; the packaging module is used for performing program stream packaging and packaging operation on the video data to obtain a program stream packet with a first format identifier if the network abstraction layer unit NALU indicates that the format type of the video data is a first video format; if the network abstraction layer unit NALU indicates that the format type of the video data is in a second video format, performing program stream packaging operation on the video data to obtain a program stream packet with a second format identifier; and the sending module is used for sending the program stream packets to the Ethernet monitoring platform, and the Ethernet monitoring platform is used for analyzing and playing the program stream packets according to the first format identifier or the second format identifier.
Optionally, the parsing module is configured to parse the video data to obtain network abstraction layer header data and an original data byte stream of the video data.
Optionally, the encapsulating module is configured to, if the network abstraction layer header data indicates that the format type of the video data is an h.264 format, flush-encapsulate the sequence parameter set, the image parameter set, and the live decoder of the video data into a program stream packet having an identifier of 0x 1B.
Optionally, the encapsulating module is configured to, if the network abstraction layer header data indicates that the format type of the video data is h.265 format, flush and encapsulate the sequence parameter set, the image parameter set, and the live decoder of the video data into a program stream packet with 0x24 identifier.
Optionally, the first video networking node server further comprises: the conversion module is used for receiving a first video data monitoring request from the Ethernet monitoring platform and converting the first video data monitoring request into a second video data monitoring request supporting a video networking protocol before the analysis module receives video data from the second video networking node server and analyzes the video data to obtain a network abstraction layer unit NALU of the video data; the sending module is further configured to send the second video data monitoring request to the second video networking node server, where the second video networking node server is configured to determine whether the second video data monitoring request is legal, and if so, send the video data to the first video networking node server.
The embodiment of the invention has the following advantages:
the embodiment of the invention is applied to the video network and the Ethernet, wherein the video network comprises a first video network node server and a second video network node server, the Ethernet comprises an Ethernet monitoring platform, and the first video network node server is respectively connected with the second video network node server and the Ethernet monitoring platform. The second video network node server is used as a video data sending party, the first video network node server is used as a video data forwarding party, and the Ethernet monitoring platform is used as a video data receiving party. The first video networking node server receives video data from the second video networking node server, and analyzes the video data to obtain a Network Abstraction Layer Unit (NALU) of the video data; the first video networking node server determines the format type of the video data according to the NALU, and if the NALU indicates that the format type of the video data is in a first video format, the first video networking node server performs program stream packaging operation on the video data to obtain a program stream packet with a first format identifier; if the NALU indicates that the format type of the video data is in the second video format, the first video networking node server performs program stream packaging and packaging operation on the video data to obtain a program stream packet with a second format identifier; and the first video network node server sends the packaged program stream packets to an Ethernet monitoring platform, and the Ethernet monitoring platform is used for analyzing and playing the program stream packets according to the first format identifications or the second format identifications in the program stream packets.
The embodiment of the invention applies the characteristics of the video network, and the first video network node server distinguishes the format types of the video data through the NALU of the video data, and then packages and encapsulates the video data of different format types into the program stream packets with different format identifications. The Ethernet monitoring platform can perform corresponding analysis and playing according to the different format identifications in the program stream packet, so that the accuracy of analyzing and playing the program stream packet by the Ethernet monitoring platform is improved.
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FIG. 1 is a schematic networking diagram of a video network of the present invention;
FIG. 2 is a schematic diagram of a hardware architecture of a node server according to the present invention;
fig. 3 is a schematic diagram of a hardware structure of an access switch of the present invention;
fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention;
FIG. 5 is a flow chart illustrating steps of a method for processing video data according to an embodiment of the present invention;
FIG. 6 is an exemplary diagram of an operation of a method for a shared platform server to distinguish between H.264 and H.265 code streams of a video network and to separately package the streams;
fig. 7 is a block diagram of an embodiment of a video data processing system according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The video networking is an important milestone for network development, is a real-time network, can realize high-definition video real-time transmission, and pushes a plurality of internet applications to high-definition video, and high-definition faces each other.
The video networking adopts a real-time high-definition video exchange technology, can integrate required services such as dozens of services of video, voice, pictures, characters, communication, data and the like on a system platform on a network platform, such as high-definition video conference, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mail, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like, and realizes high-definition quality video broadcast through a television or a computer.
To better understand the embodiments of the present invention, the following description refers to the internet of view:
some of the technologies applied in the video networking are as follows:
network Technology (Network Technology)
Network technology innovation in video networking has improved over traditional Ethernet (Ethernet) to face the potentially enormous video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network circuit Switching (circuit Switching), the internet of vision technology employs network Packet Switching to satisfy the demand of Streaming (which is interpreted as Streaming, continuous broadcasting, and is a data transmission technology that changes received data into a stable continuous stream and continuously transmits the stream, so that the sound heard or image seen by the user is very smooth, and the user can start browsing on the screen before the whole data is transmitted). The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.
Switching Technology (Switching Technology)
The video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.
Server Technology (Server Technology)
The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.
Storage Technology (Storage Technology)
The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.
Network Security Technology (Network Security Technology)
The structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.
Service Innovation Technology (Service Innovation Technology)
The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes infinite new service innovation.
Networking of the video network is as follows:
the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.
As shown in fig. 1, the video network is divided into an access network and a metropolitan network.
The devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.
The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.
Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.
The node server is a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.
The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.
Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.
The access network part can form a unified video platform (circled part), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.
Video networking device classification
1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.
1.2 wherein the devices of the access network part can be mainly classified into 3 types: node servers, access switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.).
The specific hardware structure of each access network device is as follows:
a node server:
as shown in fig. 2, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204.
The network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.
The access switch:
as shown in fig. 3, the network interface module (downstream network interface module 301, upstream network interface module 302), the switching engine module 303, and the CPU module 304 are mainly included.
Wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the data packet coming from the CPU module 204 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switching engine module 303 polls all packet buffer queues, which in this embodiment of the present invention is divided into two cases:
if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) and obtaining the token generated by the code rate control module.
If the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.
The rate control module 208 is configured by the CPU module 204, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.
The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.
Ethernet protocol conversion gateway：
As shown in fig. 4, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.
Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;
the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, acquires the ethernet MAC DA of the corresponding terminal according to the video networking destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MACSA of the ethernet coordination gateway, and the ethernet length or frame type, and sends the packet.
The other modules in the ethernet protocol gateway function similarly to the access switch.
A terminal:
the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.
1.3 devices of the metropolitan area network part can be mainly classified into 3 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.
2. Video networking packet definition
2.1 Access network packet definition
The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.
As shown in the following table, the data packet of the access network mainly includes the following parts:
| DA | SA | Reserved | Payload | CRC |
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (e.g. various protocol packets, multicast data packets, unicast data packets, etc.), there are at most 256 possibilities, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses.
The Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA).
The reserved byte consists of 2 bytes.
The payload part has different lengths according to types of different datagrams, and is 64 bytes if the type of the datagram is a variety of protocol packets, or is 1056 bytes if the type of the datagram is a unicast packet, but is not limited to the above 2 types.
The CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.
2.2 metropolitan area network packet definition
The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.
In this specification, the definition of the Label is similar to that of a Label of Multi-Protocol Label switching (MPLS), and assuming that there are two connections between a device a and a device B, there are 2 labels for a packet from the device a to the device B, and 2 labels for a packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.
As shown in the following table, the data packet of the metro network mainly includes the following parts:
| DA | SA | Reserved | label (R) | Payload | CRC |
Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.
Based on the above characteristics of the video network, one of the core concepts of the embodiments of the present invention is provided, following a protocol of the video network, the first video network node server distinguishes format types of the video data according to NALUs of the video data, and further packages and encapsulates the video data of different format types into program stream packets with different format identifiers, so as to improve the accuracy of the ethernet monitoring platform in analyzing and playing the program stream packets.
Referring to fig. 5, a flowchart illustrating steps of an embodiment of a method for processing video data according to the present invention is shown, where the method may be applied to a video network and an ethernet network, the video network includes a first video network node server and a second video network node server, the ethernet network includes an ethernet monitoring platform, and the first video network node server is connected to the second video network node server and the ethernet monitoring platform, respectively, and the method specifically includes the following steps:
in step 501, the first video networking node server receives video data from the second video networking node server, and parses the video data to obtain NALU of the video data.
In the embodiment of the present invention, the first node server of the video network may be a shared platform server in the video network, and since the shared platform server needs to connect the video network and the ethernet, the shared platform server may be configured with an internet access for connecting the video network and an internet access for connecting the ethernet. The second node server of the video network can be a monitoring protocol conversion server in the video network, the monitoring protocol conversion server can be accessed to the video monitoring equipment in the Ethernet, and the monitoring protocol conversion server needs to be connected with the video network and the Ethernet, so that the monitoring protocol conversion server can be configured with an internet access connected with the video network and an internet access connected with the Ethernet.
In this embodiment of the present invention, the video data sent by the second video networking node server may be video data collected and sent by a video monitoring device in the ethernet, and the video data may be in a plurality of format types, including but not limited to h.264, h.265, and the like.
In a preferred embodiment of the present invention, the video data is composed of NALUs, each NALU being composed of network abstraction layer header data and a stream of original data bytes. Therefore, when the first video network node server analyzes the video data, the video data can be analyzed into the network abstraction layer header data and the original data byte stream.
In the embodiment of the present invention, the format type of the video data may be represented by NALU in the video data. The first video network node server packages the video data into a program stream packet with a format identifier of the format type according to the format type of the video data, and aims to determine which specific format type the program stream packet is the video data according to the format identifier in the program stream packet by a subsequent Ethernet monitoring platform, and further analyze and play the program stream packet by adopting a correct analysis and play mode.
In a preferred embodiment of the present invention, the video data sent by the second node server to the first node server may be divided into video data of a first format type and video data of a second format type according to different format types, where the first format type may be h.264 and the second format type may be h.265.
If the NALU of the video data indicates that the format type of the video data is in the first video format, the first video networking node server performs program stream packaging operation on the video data to obtain a program stream packet with a first format identifier.
In the embodiment of the present invention, when the NALU of the video data indicates the format type of the video data, the format type of the video data may be indicated by the network abstraction layer header data in the NALU of the video data.
Program Stream (PS) packetization requires differential packetization according to whether video data contains audio data or not and whether the video data is key frame data or not. In practical applications, for key frame Data, the first NALU of video Data is Sequence Parameter Set (SPS), the second NALU is Picture Parameter Set (PPS), and the third NALU is Instantaneous Decoder Refresh (IDR), which encapsulates the SPS, PPS, and IDR into one PS packet including a PS header (PS header), and then adds a PS system header (PS system header), a PS system map (PS system map), a packet original stream header (PES header), and original Data (Raw Data). So the outside-in order of a key frame PS packet is: PS header PS system Map PESheader Data. For the PS packets of other non-key frames, it is much simpler to add the PS header and PES header directly. The sequence is as follows: PS header PES header Raw Data. In the above case where only video data does not contain audio data, if audio data is also packetized and encapsulated, the raw data plus the PES header is put into the video PES. The sequence is as follows: PS packet is PS header PES (video) PES (audio).
For example, when video data with a format type of h.264 format is encapsulated, the first video networking node server may encapsulate SPS, PPS, and IDR into one PS packet with 0x1B identifier, where the format identifier of the PS packet of the video data with the h.264 format is not limited to only 0x1B identifier, and the format identifier of the PS packet of the video data with the h.264 format is not limited in the embodiment of the present invention.
And (II) if the NALU of the video data indicates that the format type of the video data is in the second video format, the first video networking node server performs program stream packaging operation on the video data to obtain a program stream packet with a second format identifier.
As an example, when encapsulating the video data with the format type of h.265 format, the first video network node server may encapsulate SPS, PPS, and IDR into one PS packet with 0x24 identifier, where the format identifier of the PS packet of the video data with the h.265 format is not limited to the 0x24 identifier, and the format identifier of the PS packet of the video data with the h.265 format is not limited in this embodiment of the present invention.
In the embodiment of the invention, after the Ethernet monitoring platform receives the program stream packet, the specific format type of the video data corresponding to the program stream packet can be determined according to the format identifier in the program stream packet, and then the program stream is analyzed and played by adopting an analysis and playing mode relative to the format type.
In a preferred embodiment of the present invention, before step 501, the ethernet monitoring platform sends a first video data monitoring request to the first video network node server through the IP network, and the first video network node server converts the first video data monitoring request into a second video data monitoring request supporting the video network protocol, so as to transmit the monitoring request sent by the ethernet monitoring platform to the second video network node server in the video network. After receiving the second video data monitoring request, the second video network node server makes a legal determination on the second video data monitoring request, and specifically may search for whether there is an ID of video data included in the second video data monitoring request in the second video network node server, if so, determine that the second video data monitoring request is a legal monitoring request, and if not, determine that the second video data monitoring request is an illegal monitoring request. And when the second video data monitoring request is a legal monitoring request, the second video networking node server sends the video data corresponding to the ID of the video data in the second video data monitoring request to the first video networking node server. And when the second video data monitoring request is an illegal monitoring request, the second video networking node server returns a notification message of request failure to the first video networking node server, and the first video networking node server forwards the notification message to the Ethernet monitoring platform.
Based on the above description about the embodiment of the video data processing method, a method for a shared platform server to distinguish between an h.264 code stream and an h.265 code stream of a video network and package and encapsulate the two separately is introduced below, as shown in fig. 6, the method involves a third party platform, a video network shared platform server, a video network and a monitoring transfer server. And the third-party platform sends a monitoring request of the video data to the video networking sharing platform server through the IP network. The video networking sharing platform server converts the received monitoring request of the video data into a monitoring request supporting a video networking protocol, and sends the monitoring request to the monitoring protocol conversion server through a video networking extension message. And the monitoring co-transformation server sends video data to the video networking sharing platform server under the condition of determining that the monitoring request is legal. And the video networking sharing platform server receives the video data of the H.264 code stream and the H.265 code stream, analyzes the video data, respectively packages and encapsulates the video data according to different code streams to obtain PS packets with different identifications, and then sends the PS packets to a third-party platform. And the third-party platform analyzes and plays the PS packet according to different identifications of the PS packet.
The embodiment of the invention is applied to the video network and the Ethernet, wherein the video network comprises a first video network node server and a second video network node server, the Ethernet comprises an Ethernet monitoring platform, and the first video network node server is respectively connected with the second video network node server and the Ethernet monitoring platform. The second video network node server is used as a video data sending party, the first video network node server is used as a video data forwarding party, and the Ethernet monitoring platform is used as a video data receiving party. The first video networking node server receives video data from the second video networking node server, and analyzes the video data to obtain a Network Abstraction Layer Unit (NALU) of the video data; the first video networking node server determines the format type of the video data according to the NALU, and if the NALU indicates that the format type of the video data is in a first video format, the first video networking node server performs program stream packaging operation on the video data to obtain a program stream packet with a first format identifier; if the NALU indicates that the format type of the video data is in the second video format, the first video networking node server performs program stream packaging and packaging operation on the video data to obtain a program stream packet with a second format identifier; and the first video network node server sends the packaged program stream packets to an Ethernet monitoring platform, and the Ethernet monitoring platform is used for analyzing and playing the program stream packets according to the first format identifications or the second format identifications in the program stream packets.
The embodiment of the invention applies the characteristics of the video network, and the first video network node server distinguishes the format types of the video data through the NALU of the video data, and then packages and encapsulates the video data of different format types into the program stream packets with different format identifications. The Ethernet monitoring platform can perform corresponding analysis and playing according to the different format identifications in the program stream packet, so that the accuracy of analyzing and playing the program stream packet by the Ethernet monitoring platform is improved.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 7, a block diagram of an embodiment of a video data processing system according to the present invention is shown, where the system may be applied to an internet of view network and an ethernet network, the internet of view network includes a first internet of view node server and a second internet of view node server, the ethernet network includes an ethernet monitoring platform, the first internet of view node server is connected to the second internet of view node server and the ethernet monitoring platform, and the system may specifically include the following modules:
the parsing module 701 is configured to receive video data from the second video networking node server, and parse the video data to obtain NALUs of the video data.
A packaging module 702, configured to perform program stream packaging and packaging operation on the video data to obtain a program stream packet with a first format identifier if the NALU indicates that the format type of the video data is the first video format; and if the NALU indicates that the format type of the video data is in the second video format, performing program stream packaging operation on the video data to obtain a program stream packet with a second format identifier.
The sending module 703 is configured to send the program stream packet to an ethernet monitoring platform, where the ethernet monitoring platform is configured to parse and play the program stream packet according to the first format identifier or the second format identifier.
In a preferred embodiment of the present invention, the parsing module 701 is configured to parse the video data to obtain a network abstraction layer header data and an original data byte stream of the video data.
In a preferred embodiment of the present invention, the encapsulating module 702 is configured to encapsulate the sequence parameter set, the image parameter set, and the instantaneous decoder refresh of the video data into a program stream packet having an identifier of 0x1B, if the network abstraction layer header data indicates that the format type of the video data is h.264 format.
In a preferred embodiment of the present invention, the encapsulating module 702 is configured to encapsulate the sequence parameter set, the image parameter set, and the instantaneous decoder refresh of the video data into a program stream packet having an identifier of 0x24 if the network abstraction layer header data indicates that the format type of the video data is h.265 format.
In a preferred embodiment of the present invention, the first video network node server further comprises: a conversion module 704, configured to receive a first video data monitoring request from the ethernet monitoring platform and convert the first video data monitoring request into a second video data monitoring request supporting a video networking protocol before the parsing module 701 receives video data from the second video networking node server and parses the video data to obtain NALUs of the video data; the sending module 703 is further configured to send the second video data monitoring request to a second video networking node server, where the second video networking node server is configured to determine whether the second video data monitoring request is legal, and if so, send the video data to the first video networking node server.
For the system embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The present invention provides a method and a system for processing video data, which are described in detail above, and the present invention applies specific examples to illustrate the principles and embodiments of the present invention, and the descriptions of the above examples are only used to help understanding the method and the core ideas of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for processing video data is applied to a video network and an Ethernet, wherein the video network comprises a first video network node server and a second video network node server, the Ethernet comprises an Ethernet monitoring platform, and the first video network node server is respectively connected with the second video network node server and the Ethernet monitoring platform, and the method comprises the following steps:
the first video networking node server receives video data from the second video networking node server and analyzes the video data to obtain a network abstraction layer unit NALU of the video data;
if the network abstraction layer unit NALU indicates that the format type of the video data is in a first video format, the first video networking node server performs program stream packaging and packaging operation on the video data to obtain a program stream packet with a first format identifier;
if the network abstraction layer unit NALU indicates that the format type of the video data is in a second video format, the first video networking node server performs program stream packaging and packaging operation on the video data to obtain a program stream packet with a second format identifier;
and the first video networking node server sends the program stream packets to the Ethernet monitoring platform, and the Ethernet monitoring platform is used for analyzing and playing the program stream packets according to the first format identifier or the second format identifier.
2. The method as claimed in claim 1, wherein the parsing the video data by the first video networking node to obtain a network abstraction layer unit NALU of the video data comprises:
and the first video networking node server analyzes the video data to obtain the network abstraction layer header data and the original data byte stream of the video data.
3. The method of claim 2, wherein if the network abstraction layer unit NALU indicates that the format type of the video data is the first video format, the first video network node server performs a program stream packing operation on the video data to obtain a program stream packet with a first format identifier, comprising:
if the network abstraction layer header data indicates that the format type of the video data is H.264 format, the first video network node server packages the sequence parameter set, the image parameter set and the instantaneous decoder refresh of the video data into a program stream packet with 0x1B identification.
4. The method of claim 2, wherein if the network abstraction layer unit NALU indicates that the format type of the video data is the second video format, the first video network node server performs a program stream packing operation on the video data to obtain a program stream packet with a second format identifier, comprising:
if the network abstraction layer header data indicates that the format type of the video data is H.265 format, the first video network node server packages the sequence parameter set, the image parameter set and the live decoder refresh of the video data as a program stream packet with 0x24 identification.
5. The method of claim 1, wherein before the first video networking node server receives the video data from the second video networking node server and parses the video data to obtain a network abstraction layer unit NALU of the video data, the method further comprises:
the first video networking node server receives a first video data monitoring request from the Ethernet monitoring platform and converts the first video data monitoring request into a second video data monitoring request supporting a video networking protocol;
and the first video network node server sends the second video data monitoring request to the second video network node server, the second video network node server is used for judging whether the second video data monitoring request is legal or not, and if so, the operation of sending the video data to the first video network node server is executed.
6. A processing system of video data is applied to a video network and an Ethernet, wherein the video network comprises a first video network node server and a second video network node server, the Ethernet comprises an Ethernet monitoring platform, the first video network node server is respectively connected with the second video network node server and the Ethernet monitoring platform, and the first video network node server comprises:
the analysis module is used for receiving the video data from the second video networking node server and analyzing the video data to obtain a network abstraction layer unit NALU of the video data;
the packaging module is used for performing program stream packaging and packaging operation on the video data to obtain a program stream packet with a first format identifier if the network abstraction layer unit NALU indicates that the format type of the video data is a first video format; if the network abstraction layer unit NALU indicates that the format type of the video data is in a second video format, performing program stream packaging operation on the video data to obtain a program stream packet with a second format identifier;
and the sending module is used for sending the program stream packets to the Ethernet monitoring platform, and the Ethernet monitoring platform is used for analyzing and playing the program stream packets according to the first format identifier or the second format identifier.
7. The system for processing video data according to claim 6, wherein the parsing module is configured to parse the video data to obtain a network abstraction layer header data and an original data byte stream of the video data.
8. The system for processing video data according to claim 7, wherein said encapsulation module is configured to encapsulate the sequence parameter set, the image parameter set, and the instantaneous decoder refresh of the video data into a program stream packet having an identifier of 0x1B if the network abstraction layer header data indicates that the format type of the video data is h.264 format.
9. The system of claim 7, wherein the encapsulation module is configured to encapsulate the sequence parameter set, the image parameter set, and the instantaneous decoder refresh of the video data into a program stream packet with a 0x24 identifier if the network abstraction layer header data indicates that the format type of the video data is h.265 format.
10. The system for processing video data according to claim 6, wherein said first video networking node server further comprises:
the conversion module is used for receiving a first video data monitoring request from the Ethernet monitoring platform and converting the first video data monitoring request into a second video data monitoring request supporting a video networking protocol before the analysis module receives video data from the second video networking node server and analyzes the video data to obtain a network abstraction layer unit NALU of the video data;
the sending module is further configured to send the second video data monitoring request to the second video networking node server, where the second video networking node server is configured to determine whether the second video data monitoring request is legal, and if so, send the video data to the first video networking node server.
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