CN108769791B - System and method for synthesizing image and text subtitles in real time - Google Patents
System and method for synthesizing image and text subtitles in real time Download PDFInfo
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- CN108769791B CN108769791B CN201810559243.7A CN201810559243A CN108769791B CN 108769791 B CN108769791 B CN 108769791B CN 201810559243 A CN201810559243 A CN 201810559243A CN 108769791 B CN108769791 B CN 108769791B
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The invention provides a system for synthesizing image-text captions in real time, which belongs to the technical field of digital televisions and comprises: a non-editing end generates a subtitle file corresponding to the program file; the image-text editing module receives and outputs a program file and a subtitle file; the third auditing module synchronously audits the program file and the subtitle file and judges whether the subtitle file needs to be modified; when the three-audit module judges that the caption file needs to be modified, the image-text editing module receives the caption file fed back by the three audit module, modifies the caption file and generates an SRT (short request for transfer) broadcasting list, and sends the program file and the SRT broadcasting list to the image-text broadcasting control end for broadcasting; the image-text editing module is also used for generating an SRT (short message transmission) broadcasting list according to the subtitle file when the three-audit module judges that the subtitle file does not need to be modified, and the image-text editing module sends the program file and the SRT broadcasting list to the image-text broadcasting control end for broadcasting. The invention has the beneficial effects that: the broadcasting of multi-language lyrics and dialogue programs is determined.
Description
Technical Field
The invention relates to the technical field of digital televisions, in particular to a system and a method for synthesizing image and text subtitles in real time in the process of broadcasting digital television programs.
Background
In the prior art, when a program is produced, a lyric and a dialogue are superposed in the program, and the direct broadcasting is carried out without any treatment during broadcasting.
The existing method is complicated when processing multiple language versions, needs to be re-made and synthesized for each language at a making end, and costs a lot of manpower and material resources each time a program is made, so that the cost is high.
Disclosure of Invention
Aiming at the problems in the prior art, the invention relates to a method for synthesizing a teletext subtitle in real time in the process of broadcasting a digital television program.
The invention adopts the following technical scheme:
a system for synthesizing a text subtitle in real time, comprising:
the non-editing end is used for generating a subtitle file corresponding to the program file and outputting the program file and the subtitle file;
the image-text editing module is connected with the non-editing end and used for receiving the program file and the subtitle file and outputting the program file and the subtitle file;
the three-auditing module is connected with the image-text editing module and is used for receiving the program file and the subtitle file, synchronously auditing the program file and the subtitle file so as to judge whether the subtitle file needs to be modified and carrying out subsequent processing according to a judgment result;
the image-text editing module is also used for receiving the subtitle files fed back by the three reviewing modules and generating an SRT (short request for transfer) broadcasting list after modifying the subtitle files when the three reviewing modules judge that the subtitle files need to be modified, and the image-text editing module sends the program files and the SRT broadcasting list to the image-text broadcasting control end;
the image-text editing module is also used for generating an SRT (short message transmission) broadcasting list according to the subtitle file when the three review modules judge that the subtitle file does not need to be modified, and the image-text editing module sends the program file and the SRT broadcasting list to the image-text broadcasting control end;
and the image-text broadcasting control end is connected with the image-text editing module and is used for receiving the program file and the SRT broadcasting list and broadcasting the program file and the SRT broadcasting list.
Preferably, the non-editing end generates the subtitle file by itself; or
And the non-authoring end generates the subtitle file through the plug-in.
Preferably, the types of the subtitle files include an lyric teletext subtitle and a subtitle.
Preferably, the subtitle file format includes SRT and ASS.
Preferably, the image-text editing module is further configured to bind the program file and the subtitle file and send the program file and the subtitle file to the three-audit module.
Preferably, when the three-audit module judges that the subtitle file needs to be modified, the three-audit module synchronously sets the content of the image-text audit as the audit failure, and marks the text content needing to be modified in the subtitle file.
A method of synthesizing a teletext subtitle in real time, comprising:
step S1, generating a caption file corresponding to a program file by using a non-editing end, and outputting the program file and the caption file;
step S2, adopting a picture and text editing module to receive the program file and the caption file and output the program file and the caption file;
step S3, using a three-audit module to receive the program file and the subtitle file, and synchronously audit the program file and the subtitle file to determine whether the subtitle file needs to be modified:
if yes, go to step S4;
if the judgment result is no, go to step S5;
step S4, the image-text editing module receives the subtitle file fed back by the three-examination module, modifies the subtitle file to generate an SRT (short message transmission) broadcasting list, sends the program file and the SRT broadcasting list to the image-text broadcasting control end, and then goes to step S6;
step S5, the image-text editing module generates an SRT broadcast list according to the subtitle file, sends the program file and the SRT broadcast list to the image-text broadcast control end, and then goes to step S6;
and step S6, the image-text playing control terminal receives the program file and the SRT playing list and plays the program file and the SRT playing list.
Preferably, in step S1, the non-authoring end generates the subtitle file by itself; or
And the non-authoring end generates the subtitle file through the plug-in.
Preferably, the types of the subtitle files include an lyric teletext subtitle and a subtitle.
Preferably, the subtitle file format includes SRT and ASS.
Preferably, in step S2, the teletext compiling module binds the program file and the subtitle file and then sends the program file and the subtitle file to the three-audit module.
Preferably, in step S4, when the three-audit module determines that the subtitle file needs to be modified, the three-audit module sets the content of the image-text audit as an audit failure, and marks the text content that needs to be modified in the subtitle file.
The invention has the beneficial effects that: under the condition of not increasing the investment of front-end equipment, the influence of inserted advertisements on time lines is eliminated through flow reconstruction, the relative program time and the absolute broadcasting time of the lyrics and the dialogue are accurately calibrated, and the lyrics and the dialogue image-text subtitles are synthesized and placed at the broadcasting end, so that the real-time synthesis of the lyrics and the dialogue image-text subtitles at the broadcasting end is realized, and the broadcasting of multi-language lyrics and dialogue programs is realized.
Drawings
FIG. 1 is a functional block diagram of a system for synthesizing text subtitles in real time according to a preferred embodiment of the present invention;
fig. 2 is a flow chart of a method for synthesizing teletext subtitles in real time in a preferred embodiment of the invention;
fig. 3 is a flow chart illustrating a method for synthesizing a teletext subtitle in real time according to a preferred embodiment of the invention.
Detailed Description
In the following embodiments, the technical features may be combined with each other without conflict.
The following further describes embodiments of the present invention with reference to the drawings:
as shown in fig. 1, a system for synthesizing text subtitles in real time includes:
a non-creation terminal 1, wherein the non-creation terminal 1 is used for generating a caption file corresponding to a program file and outputting the program file and the caption file;
the image-text editing module 2 is connected with the non-editing terminal 1 and is used for receiving the program file and the subtitle file and outputting the program file and the subtitle file;
a third reviewing module 3, wherein the third reviewing module 3 is connected with the image-text editing module 2 and is used for receiving the program file and the subtitle file, synchronously reviewing the program file and the subtitle file to judge whether the subtitle file needs to be modified and carrying out subsequent processing according to a judgment result;
the image-text editing module 2 is further configured to receive the subtitle file fed back by the three-audit module 3 and modify the subtitle file to generate an SRT broadcast list when the three-audit module 3 determines that the subtitle file needs to be modified, and the image-text editing module 2 sends the program file and the SRT broadcast list to the image-text broadcast control terminal 4;
the image-text editing module 2 is further configured to generate an SRT playlist according to the subtitle file when the three-audit module 3 determines that the subtitle file does not need to be modified, and the image-text editing module 2 sends the program file and the SRT playlist to the image-text playing control terminal 4;
and the image-text broadcasting control end 4 is connected with the image-text editing module 2 module and is used for receiving and broadcasting the program file and the SRT broadcasting list.
In the present embodiment, the subtitle file includes a caption dialog and the like. The method is characterized in that a lyric/dialog is synthesized at a broadcasting end in real time, and the process of separating the lyric/dialog from a program relates to the whole program production and broadcasting process and needs the coordination of systems such as production, media asset, broadcasting and the like.
At present, a plurality of non-editing brands of a manufacturing system are provided, and not all non-editing brands have the function of directly outputting subtitle files. Plug-ins for developing subtitle file output or conversion tools for developing subtitle files are required to be customized by various non-editing manufacturers, and unified subtitle file conversion is provided. The software needs to be capable of importing the caption files in batch and outputting the caption files to a specified directory in batch, and has format selection.
The lyric/dialog file and the program file are closely related and should be used as an attachment of the program file to be synchronously put in storage and filed in a media resource system.
As shown in fig. 3, the non-editing terminal 1 generates a caption file of a lyric/dialog by itself or by a plug-in; the subtitle files are uploaded and stored in the image-text editing module 2; three-audition synchronous review video and lyrics/dialogue; if the word or dialog white needs to be modified, the simple modification is carried out on the image-text editing module 2; if the modification is not needed, the picture and text list is submitted to the picture and text broadcasting control terminal 4.
The newly added function module is that a picture and text material warehousing module is added in a picture and text editing interface of the picture and text editing module 2 to carry out unified management on the subtitle files. And synchronously auditing the subtitle file and the video file, if the subtitle is determined to need to be modified by the three auditions, synchronously setting the content of image-text audit as audit failure, and marking the text content needing to be modified.
Under the condition of not increasing the investment of front-end equipment, the influence of inserted advertisements on time lines is eliminated through flow reconstruction, the relative program time and the absolute broadcasting time of the lyrics and the dialogue are accurately calibrated, and the lyrics and the dialogue image-text subtitle files are synthesized and placed at the broadcasting end, so that the real-time synthesis of the lyrics and the dialogue image-text subtitles at the broadcasting end is realized, and the broadcasting of multi-language lyrics and dialogue programs is realized.
After the program and the lyric/dialogue file are produced at the program producing end, the program and the lyric/dialogue file are stored in a media asset library after being checked and verified, and the program and the dialogue file are transmitted to a broadcasting end through a network when the preset broadcasting time is reached. And when the broadcasting end broadcasts the program, the lyrics/dialogues are superposed and synthesized in real time to form the complete television program.
In a preferred embodiment, the non-authoring terminal 1 generates the subtitle file by itself; or the non-authoring end 1 generates the subtitle file through a plug-in.
In a preferred embodiment, the types of subtitle files include lyric subtitles and subtitles.
In a preferred embodiment, the format of the subtitle file includes SRT and ASS.
In the present embodiment, the format of the lyric/dialog file is a common "SRT" or "ASS" file format.
The title file name is the same as the corresponding program file name; the lyric/dialogue file is generated by a later non-editing system; and (5) warehousing the lyric/dialog file into a media resource system and binding the lyric/dialog file with the corresponding program.
In a preferred embodiment, the teletext compiling module 2 is further configured to bind the program file and the subtitle file and send the program file and the subtitle file to the three-audit module 3.
In a preferred embodiment, when the three-audit module 3 determines that the subtitle file needs to be modified, the three-audit module 3 sets the content of the image-text audit as an audit failure and marks the text content that needs to be modified in the subtitle file.
In this embodiment, add plug-in subtitle plug-ins to the film examination software. When a program is played, the lyric file is read and the lyric subtitles are played synchronously, and the position of the lyric subtitles is not consistent with the final playing effect completely.
The subtitle file is stored in the teletext storage of the OA network. The caption file is stored in the subdirectory of the corresponding channel, and the directory name of the channel is the channel code.
The subtitle file directory of the corresponding channel needs to be configurable, so that the subtitle file directory can be modified conveniently later.
For the modification of the lyric file, the subtitle is modified simply through third-party subtitle editing software, and the complex modification is returned to the post-production. And (5) warehousing the modified image-text data into an image-text system again.
And for the transmission and broadcasting of the lyric file, the lyric/dialogue file is used as an image-text material file and is uploaded and stored in a warehouse through a television image-text broadcasting system platform. The picture and text matching is automatically carried out in the picture and text program list of the program file with the bar code during the picture and text program list making, and the function can be completed by adding a function of content matching.
For word-of-speech file broadcast
The lyric/dialogue file is analyzed in the image-text single ring section. In the text list, the lyrics are already broken into small text items according to the time line of the lyric file, and the text content in the lyrics is used as a replaceable item. And reading and analyzing the lyric file during image-text list making, and generating image-text broadcasting items one by one according to the time line. And broadcasting according to the content in the image-text list during broadcasting.
A method of synthesizing a teletext subtitle in real time, comprising:
step S1, generating a caption file corresponding to the program file by using a non-editing terminal 1, and outputting the program file and the caption file;
step S2, adopting a picture and text editing module 2 to receive the program file and the caption file and output the program file and the caption file;
step S3, using a triple-check module 3 to receive the program file and the subtitle file, and synchronously check the program file and the subtitle file to determine whether the subtitle file needs to be modified:
if yes, go to step S4;
if the judgment result is no, go to step S5;
step S4, the teletext menu module 2 receives the subtitle file fed back by the three-audit module 3, modifies the subtitle file to generate an SRT playlist, and sends the program file and the SRT playlist to the teletext control end 4, and then goes to step S6;
step S5, the teletext menu module 2 generates an SRT playlist according to the subtitle file, and sends the program file and the SRT playlist to the teletext control terminal 4, and then goes to step S6;
step S6, the teletext player control terminal 4 receives and plays the program file and the SRT playlist.
In a preferred embodiment, in the step S1, the non-authoring terminal 1 generates the subtitle file by itself; or
The non-authoring end 1 generates the subtitle file through the plug-in.
In a preferred embodiment, the types of subtitle files include lyric subtitles and subtitles.
In a preferred embodiment, the format of the subtitle file includes SRT and ASS.
In a preferred embodiment, in the step S2, the teletext module 2 binds the program file and the subtitle file and sends the program file and the subtitle file to the triple-view module 3.
In a preferred embodiment, in the step S4, when the triple-audit module 3 determines that the subtitle file needs to be modified, the content that is checked by the graphics and text is set as a failure in the triple-audit module 3, and the text content that needs to be modified in the subtitle file is marked.
While the specification concludes with claims defining exemplary embodiments of particular structures for practicing the invention, it is believed that other modifications will be made in the spirit of the invention. While the above invention sets forth presently preferred embodiments, these are not intended as limitations.
Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.
Claims (11)
1. A system for synthesizing a text subtitle in real time, comprising:
the non-editing end is used for generating a subtitle file corresponding to the program file and outputting the program file and the subtitle file; the non-production end is provided with a caption plug-in, and the lyric file is read and the lyric caption is played synchronously when the program is played;
the image-text editing module is connected with the non-editing end and used for receiving the program file and the subtitle file, analyzing the subtitle file according to a time line of the subtitle file, splitting the subtitle file into a plurality of image-text items corresponding to the time line to be included in the subtitle file, and outputting the program file and the subtitle file, wherein the text content in the subtitle file can be replaced;
the three-auditing module is connected with the image-text editing module and is used for receiving the program file and the subtitle file, synchronously auditing the program file and the subtitle file so as to judge whether the subtitle file needs to be modified and carrying out subsequent processing according to a judgment result;
the image-text editing module is also used for receiving the subtitle files fed back by the three reviewing modules and generating an SRT (short request for transfer) broadcasting list after modifying the subtitle files when the three reviewing modules judge that the subtitle files need to be modified, and the image-text editing module sends the program files and the SRT broadcasting list to an image-text broadcasting control end;
the image-text editing module is also used for generating an SRT (short message transmission) broadcasting list according to the subtitle file when the three review modules judge that the subtitle file does not need to be modified, and the image-text editing module sends the program file and the SRT broadcasting list to the image-text broadcasting control end;
when the SRT broadcasting list is generated, the image-text editing module reads and analyzes the caption file, and generates image-text broadcasting items one by one according to a time line and all the image-text items included in the caption file and includes the image-text broadcasting items in the SRT broadcasting list;
and the image-text broadcasting control end is connected with the image-text editing module and is used for receiving the program file and the SRT broadcasting list and broadcasting the program file and the SRT broadcasting list.
2. The system according to claim 1, wherein the non-authoring end generates the subtitle file by itself; or
And the non-authoring end generates the subtitle file through the plug-in.
3. The system of claim 1, wherein the types of subtitle files include an lyric teletext subtitle and a subtitle.
4. The system of claim 1, wherein the subtitle file format comprises SRT and ASS.
5. The system of claim 1, wherein the teletext billing module is further configured to bind the program file and the subtitle file and send the program file and the subtitle file to the triple-view module.
6. The system according to claim 1, wherein when the triple-audit module determines that the subtitle file needs to be modified, the triple-audit module synchronously sets the content of the image-text audit as an audit failure, and marks the text content needing to be modified in the subtitle file.
7. A method for synthesizing teletext subtitles in real time, wherein a system for synthesizing teletext subtitles in real time according to any one of claims 1 to 6 is applied, comprising:
step S1, generating a caption file corresponding to a program file by using a non-editing end, and outputting the program file and the caption file; the non-production end is provided with a caption plug-in, and the lyric file is read and the lyric caption is played synchronously when the program is played;
step S2, adopting a picture and text editing module to receive the program file and the caption file, analyzing and splitting the caption file into a plurality of picture and text items corresponding to the time line according to the time line of the caption file so as to be included in the caption file, and outputting the program file and the caption file, wherein the text content in the caption file can be replaced;
step S3, using a three-audit module to receive the program file and the subtitle file, and synchronously audit the program file and the subtitle file to determine whether the subtitle file needs to be modified:
if yes, go to step S4;
if the judgment result is no, go to step S5;
step S4, the image-text editing module receives the subtitle file fed back by the three-examination module, modifies the subtitle file to generate an SRT (short message transmission) broadcasting list, sends the program file and the SRT broadcasting list to an image-text broadcasting control end, and then goes to step S6;
step S5, the image-text editing module generates an SRT broadcast list according to the subtitle file, sends the program file and the SRT broadcast list to the image-text broadcast control end, and then goes to step S6;
step S6, the image-text playing control end receives and plays the program file and the SRT playing list;
when the SRT broadcast list is generated, the image-text editing module reads and analyzes the caption file, and generates image-text broadcast items one by one according to a time line and all the image-text items included in the caption file and includes the image-text broadcast items in the SRT broadcast list.
8. The method according to claim 7, wherein in step S1, the non-authoring end generates the subtitle file by itself; or
And the non-authoring end generates the subtitle file through the plug-in.
9. The method of claim 7, wherein the subtitle file format comprises an SRT and an ASS.
10. The method according to claim 7, wherein in step S2, the teletext module binds the program file and the subtitle file and sends the program file and the subtitle file to the triple-view module.
11. The method according to claim 7, wherein in step S4, when the triple-audit module determines that the subtitle file needs to be modified, the triple-audit module sets the content that is checked for the graphics and text as a failure of the audit, and marks the text that needs to be modified in the subtitle file.
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