CN114745600A - Video label labeling method and device based on SEI - Google Patents
Video label labeling method and device based on SEI Download PDFInfo
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
- G06F16/78—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/7867—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using information manually generated, e.g. tags, keywords, comments, title and artist information, manually generated time, location and usage information, user ratings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/177—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a group of pictures [GOP]
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Abstract
A video label labeling method and device based on SEI belong to the field of video labels, and the method comprises the following steps: receiving TS stream, which is formed by coding serial digital interface signals to form coding frames and adding SEI frames before the coding frames, wherein the SEI frames have video label information; and reading the video label information in the SEI frame, decoding the GOP where the video label information in the TS stream is located when the video label information meets the requirements of a user, recovering the serial digital interface signal, and not decoding the GOP where the video label information does not meet the requirements of the user. The SEI frame adopts the native support of the source coding standard, so that the added custom information does not have the compatibility problem, and the method has better universality. The information in the video tag is convenient for a user to know the related information of the video without decoding the video, and other video tag management systems or cataloging systems do not need to be installed and configured.
Description
Technical Field
The invention relates to the technical field of video labels, in particular to a video label labeling method and device based on SEI.
Background
With the rapid development of video technology, the number of cable televisions and satellite video channels increases, the number of users of internet video platforms increases, video data grows explosively, and the demand for rapid transmission is met. The label of the video can provide powerful support for classification filing and retrieval of video resources.
Although the automation degree of label labeling is increased by assistance of new frames or new technologies such as a cloud media resource system, deep learning and the like in recent years, different video users need to repeatedly label, so that great resources are consumed, or a video management system with labels is purchased, and the labels are only useful in retrieval, so that the cost performance is low.
The current label system and video are separated, a management system is required, when mapping is generated between the label and the video, and the video and the label are shared, the same management system needs to be configured at the same time, and the mode of sharing the video and the label between users is limited.
In summary, the mass videos urgently need to be labeled for resource maintenance, but the current labeling mode is low in cost performance and not beneficial to sharing among users.
Disclosure of Invention
In order to solve the above problems, the present invention provides a video label labeling method based on SEI, comprising:
receiving TS (transport stream) which is formed by coding serial digital interface signals to form coding frames and adding SEI (solid electrolyte interface) frames in front of each coding frame, wherein video label information is written in the SEI frames;
and reading out the video label information in the SEI frame, decoding the GOP where the video label information in the TS stream is located when the video label information meets the requirements of a video user, recovering the serial digital interface signal so that the video user can operate the video, and not decoding the GOP where the video label information which does not meet the requirements of the video user is located.
Optionally, the encoded frame refers to at least one of an I frame, a P frame, and a B frame.
Optionally, the video tag information includes at least one of an inherent attribute tag, a content tag and an extension tag, where the inherent attribute tag refers to production information of a video, and includes at least one of a shooting location, a shooting time, a shooting purpose, video producer information, a video duration, and a video resolution;
the content label refers to information labeled aiming at the content in the video, and comprises at least one of the content, actors, emotion basic tones and subject matters of the video;
the extension tag is user-defined content, and includes at least one of evaluation of the video and usage record of the video.
Alternatively, the attribute tag, the content tag, and the extension tag are dispersedly inserted in several SEI frames of the same GOP, or the attribute tag, the content tag, and the extension tag are all inserted in one SEI frame of the same GOP.
Optionally, the video tag information adopts a UTF-8 or GBK coding mode.
Optionally, the meeting of the user requirement means that the user reads the SEI and performs matching search;
or after all the video tags are read out, the video tags are stored in a text form and then are subjected to matching search, so that the video tag information matched with the user requirement is searched out.
Optionally, the format of the SEI frame includes a start identifier, an SEI message identifier, a custom content length, a custom content, and a frame end identifier, and the video tag information is written in the custom content.
Optionally, the serial digital interface signal is encoded in any one of h.264, h.265, h.266, HEVC, AVS +, AVS2, and AVS 3.
The present invention also provides an electronic device comprising a memory and a processor, wherein an SEI-based video tagging program is stored in the memory, and when the SEI-based video tagging program runs in the processor, the SEI-based video tagging method is performed.
The invention also provides a video label labeling method based on SEI, which comprises the following steps:
coding the serial digital interface signal to generate coding frames, adding an SEI frame in front of each coding frame to synthesize a TS stream, wherein video label information is written in the SEI frame;
and sending the TS stream to read out the video label information in the SEI frame after receiving the TS stream, decoding the GOP where the video label information is located in the TS stream when the video label information meets the requirements of a video user, and recovering the serial digital interface signal so that the video user can operate the video, and not decoding the GOP where the video label information which does not meet the requirements of the video user is located.
The invention has the following beneficial effects:
(1) the SEI frame is native support of source coding standards such as HEVC and AVS and is used for adding some extension information, so that the added video tag information does not have compatibility problem. Meanwhile, the SEI frame does not depend on a specific network transmission protocol and a specific closed format, and has better universality, so that the SEI frame is very suitable for carrying video label information such as inherent attributes, contents, extensions and the like.
(2) The video label information is attached to the video itself, sharing and reading are facilitated, and the label marking mode has good sharing property.
(3) The video label information is convenient for a user to know the related information of the video without decoding the video, and other video label management systems or cataloging systems do not need to be installed and configured.
(4) The video label information is used as an open label, a user can add own label content into the video label information and delete labels marked by other people, and great flexibility and individuation are brought to the use of the video.
(5) The video producer information in the inherent attribute label and the use record identification in the extension label can be matched with an encryption method for use and can be used as a proof of video copyright, so that the possibility of tampering is eliminated.
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The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
Fig. 1 is a flowchart illustrating an SEI-based video tagging method according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
Fig. 1 is a flowchart illustrating an SEI-based video tagging method according to an embodiment of the present invention. As shown in fig. 1, the method for labeling a video label based on SEI according to this embodiment includes the following steps:
step S1, encoding an SDI (serial digital interface) signal to generate an encoded frame, which may be encoded by a video encoder, where the encoded frame is at least one of an I frame, a P frame, and a B frame, adding an SEI frame before each encoded frame, writing video tag information in the SEI frame, and then synthesizing a TS stream (transport stream). Specifically, when video coding an SDI signal, an SEI (supplemental enhancement information) frame is inserted before each frame of the signal, or an SEI frame is inserted only before an I frame (in the case of using an I frame).
The SEI frame format comprises a start identifier, an SEI message identifier, a user-defined content length, a user-defined content and a frame end identifier. The custom content part has no maximum length limitation, so that video label information can be written into the custom content part, and an SEI frame and an encoding frame are combined into a TS stream. The TS stream may be encapsulated into an IP code stream by a network protocol for network transmission, and the network protocol may be one of the protocols such as SRT, RTMP, RTSP, UDP, and WebRTC.
As in fig. 1, the SDI signal generates coded frame 1, coded frame 2, … … coded frame n, and accordingly SEI1 is inserted before coded frame 1, SEI2 is inserted before coded frame 2, and SEIn is inserted before coded frame n.
The video tag information may include an inherent attribute tag, a content tag, and an extension tag. The inherent attribute label refers to the production information of the video, including shooting place, shooting time, shooting purpose, video producer information, video duration, video resolution and the like; the content label refers to information labeled for the content in the video, including the content, actors, emotion basic tones, subject matters and the like of the video; the extension tag refers to user-defined content and may include evaluation of the video, usage record of the video, and the like. The Chinese in the video tag information can adopt UTF-8 (a variable length character code of UNICODE) or GBK (Chinese character internal code extension specification) and other coding modes, and can also adopt a self-defined coding mode. The programming method inserted into the SEI frame is consistent with the programming language selected for video coding.
The video coding can adopt the coding mode of supporting SEI frames such as H.264, H.265, H.266, HEVC, AVS +, AVS2, AVS3 and the like, the coded video coding has I frames, B frames and P frames, the coded video coding is in the form of SEI frames, I frames, SEI frames, P frames, SEI frames and B frames … …, and video label information is written in the SEI frames.
Since SEI is native support for video coding protocol (e.g. h.264, h.265, h.266, AVS +, AVS2, AVS3 video compression standard) for adding some extension information, the added custom information does not have compatibility problem. In addition, SEI does not depend on specific network transmission protocols and closed formats, and has better universality, so that the SEI is very suitable for carrying auxiliary information such as video label information and the like.
Step S2, sending the TS stream, so that the decoder reads out the video tag information in the SEI frame (the SEI frame is a 16-ary character representation, and decoding is to decode the 16-ary character into a text), where the video tag information is convenient for the user to know the related information of the video without decoding the video. When the video tag information meets the requirements of the video user, the GOP (group of pictures) where the video tag information is located in the TS stream is decoded, the SDI signal is recovered, and then the video can be edited and the like. And the GOPs with video tag information not meeting the requirements are not decoded.
The meeting of the user requirement means that the user can read the SEI, namely, the 16-system character in the SEI is decoded into a character, and a programming language is adopted to match a target search word, for example, a function strcmp () in a C language can compare character strings; or after all the documents are read, the documents may be stored as text documents and the like, and then the matching search may be performed.
The video label information is used as an open label, and a user can add own label content into the video label information and delete labels marked by other people, so that great flexibility and individuation are brought to the use of the video.
The video producer information in the inherent attribute label and the use record identification in the extension label can also be used as a proof of video copyright, and the video producer information and the use record identification can be matched with an encryption method for use, so that the possibility of tampering is avoided.
Taking h.265 coding as an example, the SEI frame format is as follows:
00 00 00 014e 01 05216c 63 70 73 62 35 64 61
39 66 34 36 35 64 33 6601 0f32 30 30 36 32 34
31 34 31 35 33 30 31 32 33 80
wherein, the numerical meaning from front to back is that 000000014 e 0105 is a fixed SEI frame feature (including head and tail); identifying the length of the following custom bag body (if the length exceeds 255, a plurality of bytes are automatically expanded to represent); 6c 637073623564613966343635643366 is a uuid of 16 bytes, which is fixed; 01 is a sub-category for identifying this extension, frame sync is fixed as 01; 0f is 01 this classification body length, i.e. the following 323030363234313431353330313233, length 15 (also denoted by extension multi-byte if the body length is larger than 255), 80 is the SEI terminator.
In an alternative embodiment, the video tag information may be dispersedly inserted into several SEI frames of the same GOP, for example, an inherent attribute tag is written into the first SEI frame of the GOP, a content tag is written into the second SEI frame of the GOP, and an extension tag is written into the third SEI frame of the GOP, so as to facilitate tag classification reading at a later stage. Of course, a simplified method may be adopted to insert all the attribute tag, the content tag, and the extension tag into one SEI frame of the same GOP.
The invention also provides a video label labeling method based on SEI, which comprises the following steps:
step S1, receiving TS stream, wherein the TS stream is formed by encoding serial digital interface signals to form encoding frames and adding SEI frames before each encoding frame, and the SEI frames are all written with video label information;
step S2, the video tag information in the SEI frame is read out, and when the video tag information meets the requirements of the video user, the GOP where the video tag information in the TS stream is located is decoded, and the serial digital interface signal is recovered, so that the video user can operate the video, and when the video tag information does not meet the requirements of the video user, the GOP is not decoded.
The present invention also provides an electronic device, which is an apparatus capable of automatically performing numerical calculation and/or information processing according to a preset or stored instruction. For example, it may be a smartphone, tablet, laptop, desktop computer, server, etc. The electronic device includes at least, but is not limited to, a memory, a processor, which are communicatively coupled to each other. Wherein: the memory includes at least one type of computer-readable storage medium including flash memory, hard disks, multimedia cards, card-type memory (e.g., SD or DX memory, etc.), Random Access Memory (RAM), Static Random Access Memory (SRAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Programmable Read Only Memory (PROM), magnetic memory, magnetic disks, optical disks, etc. In some embodiments, the storage may be an internal storage unit of the electronic device, such as a hard disk or a memory of the electronic device. In other embodiments, the memory may also be an external storage device of the electronic apparatus, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the electronic apparatus. Of course, the memory may also include both an internal storage unit of the electronic apparatus and an external storage device thereof. In this embodiment, the memory is typically used for storing the operating system and various types of application software installed on the electronic device, such as the SEI-based video tagging program code and the like. In addition, the memory may also be used to temporarily store various types of data that have been output or are to be output.
The processor may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor, or other data Processing chip in some embodiments. The processor is generally configured to control the overall operation of the electronic device, such as performing control and processing related to data interaction or communication with the electronic device. In this embodiment, the processor is configured to execute the program code stored in the memory or process data, for example, execute the SEI-based video tag marking program.
The memory containing the readable storage medium may include an operating system, an SEI-based video tagging program, and the like. The steps of S1 to S2 described above are implemented when the processor executes the SEI-based video tagging program in the memory, and are not described herein again. In this embodiment, the SEI-based video tagging program stored in memory can be partitioned into one or more program modules stored in memory and executable by one or more processors to complete the present application. The program modules referred to in this application refer to a series of computer program instruction segments capable of performing specific functions, and the specific implementation of each module of the electronic device is substantially the same as the specific implementation of the steps of the SEI-based video tagging method, and thus, the detailed description thereof is omitted here.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A video label labeling method based on SEI is characterized by comprising the following steps:
receiving TS (transport stream) which is formed by coding serial digital interface signals to form coding frames and adding SEI (solid electrolyte interface) frames in front of each coding frame, wherein video label information is written in the SEI frames;
and reading out the video label information in the SEI frame, decoding the GOP where the video label information in the TS stream is located when the video label information meets the requirements of a video user, recovering the serial digital interface signal so that the video user can operate the video, and not decoding the GOP where the video label information which does not meet the requirements of the video user is located.
2. The SEI-based video tag marking method of claim 1, wherein the encoding frame refers to at least one of an I frame, a P frame and a B frame.
3. The SEI-based video tag labeling method according to claim 1, wherein the video tag information comprises at least one of an inherent attribute tag, a content tag and an extension tag, wherein the inherent attribute tag refers to production information of the video, including at least one of a shooting location, a shooting time, a shooting purpose, video producer information, a video duration and a video resolution;
the content label refers to information labeled aiming at the content in the video, and comprises at least one of the content, actors, emotion basic tones and subject matters of the video;
the extension tag is user-defined content, and comprises at least one of evaluation of the video and usage record of the video.
4. The SEI-based video label labeling method of claim 3,
the attribute tag, the content tag, and the extension tag are dispersedly inserted into several SEI frames of the same GOP, or the attribute tag, the content tag, and the extension tag are all inserted into one SEI frame of the same GOP.
5. The SEI-based video label labeling method of claim 1,
and the video label information adopts a UTF-8 or GBK coding mode.
6. The SEI-based video tagging method of claim 1, wherein the meeting of the video user requirement means that the user performs matching search while reading the SEI;
or after all the video tags are read out, the video tags are stored in a text form and then are subjected to matching search, so that the video tag information matched with the user requirement is searched out.
7. The SEI-based video tag labeling method according to claim 1, wherein the SEI frame format comprises a frame start identifier, an SEI message identifier, a custom content length, a custom content, and a frame end identifier, and the video tag information is written in the custom content.
8. The SEI-based video tag labeling method of claim 1, wherein the serial digital interface signal is encoded in any one of H.264, H.265, H.266, HEVC, AVS, AVS +, AVS2, and AVS 3.
9. An electronic device comprising a memory and a processor, wherein the memory stores an SEI-based video tagging program, and the SEI-based video tagging program, when executed in the processor, performs the SEI-based video tagging method of any one of claims 1 to 8.
10. A video label labeling method based on SEI is characterized by comprising the following steps:
coding the serial digital interface signal to generate coding frames, adding an SEI frame in front of each coding frame to synthesize a TS (transport stream), wherein video label information is written in the SEI frame;
and sending the TS stream to read out the video label information in the SEI frame after receiving the TS stream, decoding the GOP where the video label information is located in the TS stream when the video label information meets the requirements of a video user, and recovering the serial digital interface signal so that the video user can operate the video, and not decoding the GOP where the video label information which does not meet the requirements of the video user is located.
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