CN109640109B - Method and device for abnormally reproducing transcoding of live video stream - Google Patents
Method and device for abnormally reproducing transcoding of live video stream Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000002159 abnormal effect Effects 0.000 claims abstract description 32
- 230000005856 abnormality Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000010076 replication Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000004590 computer program Methods 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23113—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving housekeeping operations for stored content, e.g. prioritizing content for deletion because of storage space restrictions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
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- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a method and a device for reproducing transcoding abnormity of a live video stream. The video stream is recorded while being transcoded, the recorded file is sent to the analysis server, and the analysis server is simulated into the cache server on the line, so that abnormal transcoding reproduction can be realized according to data analyzed by the analysis server, an abnormal environment is reproduced, and analysis and compatible processing of abnormal streams are facilitated.
Description
Technical Field
The embodiment of the invention relates to the technical field of live video, in particular to a method and a device for abnormally reproducing transcoding of a live video stream.
Background
In live broadcasting, generally, a stream with relatively high resolution and high code rate comes from a push stream, and various requirements such as different resolutions, code rates, frame rates and the like are often required at a stream pulling end, so that source audio/video streams need to be transcoded at a service end.
The live broadcast is characterized in that live video streams are generated and watched in real time, and a large amount of live video streams are stored without recording. Due to the customization of each manufacturer, various online video streams are available, and when transcoding is performed, pulling a stream to a cache (cache) server may cause a problem in forwarding the video stream by the cache server, so that the video stream pulled by transcoding software cannot be transcoded, and a transcoding error occurs, which may be referred to as an abnormal stream.
At present, when an abnormal stream is analyzed, the reason for the abnormality can only be guessed according to an output log, and the environment when the abnormal stream occurs in the video stream cannot be specifically reproduced, so that the reason for the abnormal stream cannot be accurately analyzed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for reproducing the transcoding abnormity of a live video stream, which are used for reproducing the environment when the transcoding of the video stream is abnormal, so that the accuracy of abnormal stream analysis is improved.
The method for abnormally reproducing the transcoding of the live video stream, provided by the embodiment of the invention, comprises the following steps:
acquiring a video stream to be transcoded, and recording the video stream to be transcoded;
when the transcoding abnormality of the video stream to be transcoded is determined, sending a recording file of the video stream to be transcoded to an analysis server for analysis;
and performing transcoding abnormity reproduction according to the data analyzed by the analysis server.
According to the technical scheme, the video stream is transcoded and recorded at the same time, the recorded file is sent to the analysis server, and the analysis server is simulated into the online cache server, so that the abnormal transcoding reappearance can be realized according to the data analyzed by the analysis server, the abnormal environment is reappeared, and the analysis and compatible processing of the abnormal stream are facilitated.
Optionally, the recording the video stream to be transcoded includes:
and recording the bottom layer data of the video stream to be transcoded.
In the technical scheme, the live video stream in the cache server can be restored to the greatest extent by recording the bottom layer data; in addition, since only data is simply stored, system performance consumption is low, and practicability of online environment application is high.
Optionally, the bottom layer data includes data of a TCP (Transmission Control Protocol) layer or data of a UDP (User Datagram Protocol) layer.
Optionally, the performing transcoding exception replication according to the data analyzed by the analysis server includes:
acquiring data analyzed by the analysis server at the same offset moment of performing on-line transcoding on the video stream to be transcoded;
and transcoding the analyzed data.
In the technical scheme, the transcoding is carried out at the same time as the transcoding on line under the line, so that the reproduction of the transcoding of the abnormal stream can be realized.
Optionally, the method further includes:
and deleting the recording file of the video stream to be transcoded when the video stream to be transcoded is determined not to have transcoding abnormality.
According to the technical scheme, the recording file is deleted when the transcoding abnormality does not exist, so that the storage space can be saved.
Correspondingly, the embodiment of the invention also provides a device for abnormally reproducing the transcoding of the live video stream, and the method comprises the following steps:
the acquisition module is used for acquiring a video stream to be transcoded and recording the video stream to be transcoded;
the processing module is used for sending the recording file of the video stream to be transcoded to an analysis server for analysis when the transcoding abnormality of the video stream to be transcoded is determined; and performing transcoding abnormity reproduction according to the data analyzed by the analysis server.
Optionally, the obtaining module is specifically configured to:
and recording the bottom layer data of the video stream to be transcoded.
Optionally, the underlying data includes data of a TCP layer or data of a UDP layer.
Optionally, the processing module is specifically configured to:
acquiring data analyzed by the analysis server at the same offset moment of performing on-line transcoding on the video stream to be transcoded;
and transcoding the analyzed data.
Optionally, the processing module is further configured to:
and deleting the recording file of the video stream to be transcoded when the video stream to be transcoded is determined not to have transcoding abnormality.
Correspondingly, the embodiment of the invention also provides a computer-readable storage medium, and the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used for enabling the computer to execute the method for abnormally reproducing the transcoding of the live video stream.
Correspondingly, an embodiment of the present invention further provides a computing device, including:
a memory for storing program instructions;
and the processor is used for calling the program instruction stored in the memory and executing the method for abnormally reproducing the transcoding of the live video stream according to the obtained program.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for abnormal reproduction of transcoding of a live video stream according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a system architecture according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of an apparatus for transcoding an abnormal reproduction of a live video stream according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a system architecture to which the method for abnormally reproducing transcoding of a live video stream according to the embodiment of the present invention is applied. Referring to fig. 1, the system architecture may be a server 100 including a processor 110, a communication interface 120, and a memory 130.
The communication interface 120 is used for the live broadcast terminal device to perform communication, and to receive and transmit information transmitted by the live broadcast terminal device, thereby implementing communication.
The processor 110 is a control center of the server 100, connects various parts of the entire server 100 using various interfaces and lines, performs various functions of the server 100 and processes data by running or executing software programs and/or modules stored in the memory 130 and calling data stored in the memory 130. Alternatively, processor 110 may include one or more processing units.
The memory 130 may be used to store software programs and modules, and the processor 110 executes various functional applications and data processing by operating the software programs and modules stored in the memory 130. The memory 130 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to a business process, and the like. Further, the memory 130 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
It should be noted that the structure shown in fig. 1 is only an example, and the embodiment of the present invention is not limited thereto.
Based on the above description, fig. 2 exemplarily shows a process of transcoding an abnormal reproduction of a live video stream, which may be performed by an apparatus for transcoding an abnormal reproduction of a live video stream according to an embodiment of the present invention.
As shown in fig. 2, the process specifically includes:
The live video stream is generally sent to a cache server for caching, and the transcoding server pulls the stream from the cache server to obtain the video stream to be transcoded. And then transcoding the video stream to be transcoded, and simultaneously recording the video stream to be transcoded by the transcoding server. Specifically, the underlying data of the video stream to be transcoded may be recorded, for example, the data of a TCP layer or the data of a UDP layer. It can also be said that the data is transmitted and received by the TCP layer or the data is transmitted and received by the UDP layer.
The server for transcoding may generally use FFMpeg (Fast forwarding Picture expert group) software to perform transcoding, where FFMpeg transcodes the transceiving data of the TCP layer or the transceiving data of the UDP layer, and records the transcoding data, and mainly records information such as time point, data, length, and the like of transceiving to form a recording file.
For example, to restore the input and output data to the maximum, recording of TCP/UDP layer data, which is the most original raw data received, must be performed. When data is read in the read function of TCP/UDP layer data, the read data is also written into a recording file. When there is write data in the write function of TCP/UDP layer data, the data to be written is also written into a recording file.
The read-write data of the recording file at each time is stored according to a preset format, for example, the storage format shown in table 1 may be used.
TABLE 1
| 1Byte(Read/write) | 4Byte(data_len) | 8Byte(sys_time) | n Byte(data) |
As shown in Table 1, the storage format may include 1 byte of read or write flag bits; a data length of 4 bytes; the system time of receiving and transmitting 8 bytes can be accurate ms; and n bytes of read and write data.
When transcoding abnormality occurs in the transcoding process of the video stream to be transcoded, the recording file of the video stream to be transcoded, namely the recording file with the format shown in the table 1, can be stored and sent to the analysis server for analysis.
When the video stream is transcoded, most transcoding streams are normal, and recording files are not required to be reserved, so that when the fact that transcoding abnormality does not occur to the video stream to be transcoded is determined, the recording files of the video stream to be transcoded can be deleted, and the occupation of disk space is prevented. That is, the server calls the delete function to clear the recorded file when transcoding normally ends.
When the transcoding is abnormal, a core (kernel) signal of the FFMpeg can be intercepted, which indicates that the FFMpeg is abnormal. And then, storing the recording file in a callback function.
And 203, performing transcoding abnormity reproduction according to the data analyzed by the analysis server.
When the analysis server analyzes the recording file, the analysis server mainly analyzes the recording file according to a preset format used when the recording file is stored, so as to obtain analyzed data. And then corresponding data can be sent to the transcoding server at corresponding offset time, so that the data of the cache server with the problem on the line can be simulated.
When performing the replication, specifically, the method may be: and acquiring analyzed data sent by the analysis server at the same offset moment of performing on-line transcoding on the video stream to be transcoded, and transcoding the analyzed data. For example, the input source address of the FFMpeg may be modified to an address pointing to the parsing server, and the parsing server may send the parsed data at the same offset time as the on-line transcoding, so that the data environment of the current abnormal stream may be reproduced, and the analysis and compatibility processing may be performed. The offset time instant, i.e. the relative time difference to the transcoding start time.
To better explain the above embodiments, fig. 3 schematically shows a structure of transcoding on-line and reproducing off-line of a video stream.
As shown in fig. 3, the method may specifically include the following steps:
step 1, the live broadcast terminal 510 sends a live broadcast video stream to the cache server 520.
The live terminal 510 generates a video stream in the live process and pushes the video stream to the cache server 520 for caching.
And 2, transcoding online.
After obtaining the stream pulling request of the transcoding server 530, the cache server 520 sends the live video stream to the transcoding server 530 for on-line transcoding, and the transcoding server 530 records the data of the TCP/UDP layer of the video stream while transcoding, so as to obtain a recorded file.
And step 3, the transcoding server 530 sends the recording file to the analysis server 540.
When determining that transcoding is abnormal, transcoding server 530 sends the recorded file to parsing server 540 for parsing.
And 4, performing offline reproduction.
After the analysis server analyzes the recording file, the analyzed data can be sent to the transcoding server at the corresponding offset moment to be transcoded, and offline reproduction is achieved.
The embodiment shows that the video stream to be transcoded is obtained, the video stream to be transcoded is recorded, when the fact that the video stream to be transcoded is abnormal in transcoding is determined, the recorded file of the video stream to be transcoded is sent to the analysis server to be analyzed, and abnormal transcoding reproduction is conducted according to data analyzed by the analysis server. The video stream is recorded while being transcoded, the recorded file is sent to the analysis server, and the analysis server is simulated into the cache server on the line, so that abnormal transcoding reproduction can be realized according to data analyzed by the analysis server, an abnormal environment is reproduced, and analysis and compatible processing of abnormal streams are facilitated.
Based on the same technical concept, fig. 4 exemplarily shows an apparatus for transcoding an abnormal reproduction of a live video stream, which can execute a process for transcoding an abnormal reproduction of a live video stream according to an embodiment of the present invention.
As shown in fig. 4, the apparatus specifically includes:
an obtaining module 401, configured to obtain a video stream to be transcoded and record the video stream to be transcoded;
the processing module 402 is configured to send a recording file of the video stream to be transcoded to an analysis server for analysis when it is determined that the transcoding of the video stream to be transcoded is abnormal; and performing transcoding abnormity reproduction according to the data analyzed by the analysis server.
Optionally, the obtaining module 401 is specifically configured to:
and recording the bottom layer data of the video stream to be transcoded.
Optionally, the underlying data includes data of a TCP layer or data of a UDP layer.
Optionally, the processing module 402 is specifically configured to:
acquiring data analyzed by the analysis server at the same offset moment of performing on-line transcoding on the video stream to be transcoded;
and transcoding the analyzed data.
Optionally, the processing module 402 is further configured to:
and deleting the recording file of the video stream to be transcoded when the video stream to be transcoded is determined not to have transcoding abnormality.
Based on the same technical concept, the embodiment of the present invention further provides a computer-readable storage medium, where computer-executable instructions are stored, and the computer-executable instructions are used to enable the computer to execute the above method for abnormally reproducing transcoding of a live video stream.
Based on the same technical concept, an embodiment of the present invention further provides a computing device, including:
a memory for storing program instructions;
and the processor is used for calling the program instruction stored in the memory and executing the method for abnormally reproducing the transcoding of the live video stream according to the obtained program.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (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 apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, 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 apparatus 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 apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus 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 in those 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 invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for abnormal reproduction of transcoding of a live video stream is characterized by comprising the following steps:
acquiring a video stream to be transcoded, and recording the video stream to be transcoded;
when the transcoding abnormality of the video stream to be transcoded is determined, sending a recording file of the video stream to be transcoded to an analysis server for analysis;
performing transcoding abnormity reproduction according to the data analyzed by the analysis server;
the recording the video stream to be transcoded comprises:
and recording the bottom layer data of the video stream to be transcoded.
2. The method of claim 1, wherein the underlying data comprises data of a Transmission Control Protocol (TCP) layer or data of a User Datagram Protocol (UDP) layer.
3. The method of claim 1, wherein performing transcoding anomaly replication according to the data parsed by the parsing server comprises:
acquiring data analyzed by the analysis server at the same offset moment of performing on-line transcoding on the video stream to be transcoded;
and transcoding the analyzed data.
4. The method according to any one of claims 1 to 3, further comprising:
and deleting the recording file of the video stream to be transcoded when the video stream to be transcoded is determined not to have transcoding abnormality.
5. An apparatus for transcoding an abnormal reproduction of a live video stream, the apparatus comprising:
the acquisition module is used for acquiring a video stream to be transcoded and recording the video stream to be transcoded;
the processing module is used for sending the recording file of the video stream to be transcoded to an analysis server for analysis when the transcoding abnormality of the video stream to be transcoded is determined; and performing transcoding abnormity reproduction according to the data analyzed by the analysis server;
the acquisition module is specifically configured to:
and recording the bottom layer data of the video stream to be transcoded.
6. The apparatus of claim 5, wherein the underlying data comprises data of a Transmission Control Protocol (TCP) layer or data of a User Datagram Protocol (UDP) layer.
7. The apparatus of claim 5, wherein the processing module is specifically configured to:
acquiring data analyzed by the analysis server at the same offset moment of performing on-line transcoding on the video stream to be transcoded;
and transcoding the analyzed data.
8. The apparatus of any of claims 5 to 7, wherein the processing module is further configured to:
and deleting the recording file of the video stream to be transcoded when the video stream to be transcoded is determined not to have transcoding abnormality.
9. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 1 to 4.
10. A computing device, comprising:
a memory for storing program instructions;
a processor for calling program instructions stored in said memory to execute the method of any one of claims 1 to 4 in accordance with the obtained program.
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| CN104380758A (en) * | 2012-04-11 | 2015-02-25 | 谷歌公司 | Scalable, live transcoding with support for adaptive streaming and failover |
| CN108174226A (en) * | 2017-12-19 | 2018-06-15 | 平安科技（深圳）有限公司 | Transcoding device, method and the computer readable storage medium of live video |
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| US9184884B2 (en) * | 2012-05-18 | 2015-11-10 | Futurewei Technologies, Inc. | System and method for cloud-based live media ingestion and transcoding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104380758A (en) * | 2012-04-11 | 2015-02-25 | 谷歌公司 | Scalable, live transcoding with support for adaptive streaming and failover |
| CN108174226A (en) * | 2017-12-19 | 2018-06-15 | 平安科技（深圳）有限公司 | Transcoding device, method and the computer readable storage medium of live video |
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