CN101909047B - Method and device for acquiring multimedia programs - Google Patents
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- CN101909047B CN101909047B CN200910241317.3A CN200910241317A CN101909047B CN 101909047 B CN101909047 B CN 101909047B CN 200910241317 A CN200910241317 A CN 200910241317A CN 101909047 B CN101909047 B CN 101909047B
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Abstract
The invention discloses a method for acquiring multimedia programs. The multimedia programs are persistently stored in a database; and a material XML (Extensive Makeup Language) file or a program XML file formed by a predefined XML description model organization is used. The method comprises the following steps of: extracting a corresponding material XML file or program XML file according to a user request and analyzing; and outputting the analyzed multimedia program according to the mode designated by the user. The invention can be used for effectively solving the problem on the compatibility of new multimedia content with traditional multimedia content, thereby being greatly convenient for users to acquire and use.
Description
Technical field
The present invention relates to the technical field of multi-medium data processing, particularly relate to a kind of acquisition methods of multimedia programming and a kind of acquisition device of multimedia programming.
Background technology
Along with stream media technology is in the extensive use of the Internet, and each TV station, radio station, website, even telecom operators start IP based network and adopt stream media technology to carry out the issue by all kinds of means of content, as mobile TV, IPTV, mobile TV etc.Simultaneously, material collection various sources till now are also mainly carried out by professional, equipment from original traditional media in the source of video and audio material, as domestic consumer uploads etc., quarry and issue all present development in pluralism, material form is except the conventional video and audio form of tradition simultaneously, also present new media feature, such as some conventional network format.In addition, picture, text even html webpage also become need management new media content.
But in traditional content of multimedia management system, for obtaining of multimedia programming normally adopt fixing standard to video and audio file catalogue, store and management, for new media content, prior art is None-identified or processing often, thereby cause having the user of needs to obtain, have a strong impact on user's experience.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of acquisition methods and device of multimedia programming, effectively to solve the data compatibility problem of new media content and traditional media content, thereby greatly user friendlyly obtains and uses.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of acquisition methods of multimedia programming, described multimedia programming be persistent storage in database, the material XML file or the program XML file that adopt predefined XML descriptive model tissue to form, described method comprises:
Ask to extract corresponding material XML file or program XML file and resolve according to user; The mode of specifying according to user is exported the multimedia programming after parsing; Wherein, in the time that described user's request is program download request, the step of the multimedia programming after described output is resolved comprises: the multimedia programming after described parsing is entered to downloading task queue; Carry out described downloading task queue, described multimedia programming is downloaded to the address that user specifies;
Described user's request is retrieval browse request, described retrieval browse request comprises the object format information that key word information and browsing multimedia program are used, and the material XML file of described extraction or program XML file are material XML file or the program XML file of the described keyword of coupling;
The step of the multimedia programming after described output is resolved comprises:
The multimedia programming that is object format by the multimedia programming transcoding after described parsing, described multimedia programming file is video file; Play described multimedia programming;
The step of the multimedia programming that is wherein, object format by the multimedia programming transcoding after described parsing comprises: the video file after described parsing is carried out to video code conversion;
The process of described video code conversion comprises the following steps:
Step T1, user's request of reception & disposal multi-medium data, the descriptor of the object format of analysis user request, extracts frame per second, video size, bit rate and code check in this descriptor;
Step T2, analyzes the source video format of described video file, extracts frame per second, video size, code check, bit rate and motion vector information in video sequence;
Step T3, judges that whether source video format is identical with the frame per second of object format, if different, the frame rate value of initialization transcoder, and perform step T4; Otherwise, directly perform step T4;
Step T4, judges that whether source video format is identical with the image size of object format, if identical, directly performs step T5; Otherwise the image size of initialization transcoding, then performs step T5;
Step T5, judges that whether source video format is identical with the bit rate size of object format, if so, directly performs step T6; Otherwise the bit rate of initialization transcoder, then performs step T6;
Step T6, starts transcoding, then utilizes the motion vector information in the source video sequence frame of described video file, and motion vector is carried out revaluation and become more meticulous, and obtains the motion vector information of object format video sequence;
Step T7, by the discrete cosine transform domain coefficient of the described motion vector information of the acquisition after conversion, carries out scramble according to 64 keys and algorithm;
Step T8, the data after described scramble is completed encapsulate according to stream media protocol.
Preferably, described material XML file or program XML file comprise as the material file of XML metadata or the file attribute of program file and contents attribute.
Preferably, described user is the user that process is authorized in advance.
The embodiment of the invention also discloses a kind of acquisition device of multimedia programming, described multimedia programming be persistent storage in database, the material XML file or the program XML file that adopt predefined XML descriptive model tissue to form, described device comprises:
Parsing module, for asking to extract corresponding material XML file or program XML file and resolving according to user;
Wherein, in the time that described user's request is program download request, described output module further comprises: queuing submodule, for the multimedia programming after described parsing being entered to downloading task queue; Download submodule, for carrying out described downloading task queue, described multimedia programming is downloaded to the address that user specifies;
When described user's request is retrieval browse request, described retrieval browse request comprises the object format information that key word information and browsing multimedia program are used, and the material XML file of described extraction or program XML file are material XML file or the program XML file of the described keyword of coupling
Output module, exports the multimedia programming after parsing for the mode of specifying according to user;
Described output module further comprises:
Transcoding submodule, for the multimedia programming that is object format by the multimedia programming transcoding after described parsing;
Play submodule, for playing described multimedia programming;
Wherein, described transcoding submodule is in the time of the multimedia programming that is object format by the multimedia programming transcoding after described parsing: the video file after described parsing is carried out to video code conversion;
The process of described video code conversion comprises:
Step T1, user's request of reception & disposal multi-medium data, the descriptor of the object format of analysis user request, extracts frame per second, video size, bit rate and code check in this descriptor;
Step T2, analyzes the source video format of described video file, extracts frame per second, video size, code check, bit rate and motion vector information in video sequence;
Step T3, judges that whether source video format is identical with the frame per second of object format, if different, the frame rate value of initialization transcoder, and perform step T4; Otherwise, directly perform step T4;
Step T4, judges that whether source video format is identical with the image size of object format, if identical, directly performs step T5; Otherwise the image size of initialization transcoding, then performs step T5;
Step T5, judges that whether source video format is identical with the bit rate size of object format, if so, directly performs step T6; Otherwise the bit rate of initialization transcoder, then performs step T6;
Step T6, starts transcoding, then utilizes the motion vector information in the source video sequence frame of described video file, and motion vector is carried out revaluation and become more meticulous, and obtains the motion vector information of object format video sequence;
Step T7, by the discrete cosine transform domain coefficient of the described motion vector information of the acquisition after conversion, carries out scramble according to 64 keys and algorithm.
Step T8, the data after described scramble is completed encapsulate according to stream media protocol.
Preferably, described material XML file or program XML file comprise as the material file of XML metadata or the file attribute of program file and contents attribute.
Preferably, described file attribute comprises ownership group information, process information-recording, extended attribute information and the classified information of file;
The contents attribute of described material file comprises the format information of script holder's metadata information, version information, entity gauge point metadata information, the format information of audio file, the format information of video file, all include files, information, audiovisual metadata information, material entity file and associated metadata information, image attribute information and/or the text attribute information of entity file;
The contents attribute of described program file comprises the items for information comprising in the information, Storyboard information, manuscript object information, Series Sheet of format information, the entity file of script holder's metadata information, version information, entity gauge point metadata information, the format information of audio file, the format information of video file, all include files, information, audiovisual metadata information, program entity file and associated metadata information, image attribute information and/or the text attribute information of Series Sheet.
Compared with prior art, the present invention has the following advantages:
The present invention is by providing unified data model to upper-layer service, i.e. employing unification, normalized XML descriptive model is organized all kinds of material file or program file, thereby set up the object database of persistence, apply this database, can upwards shield various content of multimedia form, not only can effectively compatible various traditional media and new media content format, meet the storage administration demand of All Files form, also greatly facilitating user retrieves various structurings or unstructured document, browse, the operations such as download, make user obtain better experience.
Brief description of the drawings
Fig. 1 is the flow chart of steps of the acquisition methods embodiment 1 of a kind of multimedia programming of the present invention;
Fig. 2 is the flow chart of steps of the acquisition methods embodiment 2 of a kind of multimedia programming of the present invention;
Fig. 3 is the flow chart of steps of the acquisition methods embodiment 3 of a kind of multimedia programming of the present invention;
Fig. 4 is the structured flowchart of the acquisition device embodiment of a kind of multimedia programming of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The present invention can be used in numerous general or special purpose computing system environment or configuration.For example: multicomputer system, server, network PC, minicom, mainframe computer, the distributed computing environment (DCE) that comprises above any system or equipment etc.
The present invention can describe in the general context of computer executable instructions, for example program module.Usually, program module comprises and carries out particular task or realize routine, program, object, assembly, data structure of particular abstract data type etc.Also can in distributed computing environment (DCE), put into practice the present invention, in these distributed computing environment (DCE), be executed the task by the teleprocessing equipment being connected by communication network.In distributed computing environment (DCE), program module can be arranged in the local and remote computer-readable storage medium including memory device.
In embodiments of the present invention, described multimedia programming be persistent storage in database, the material XML file or the program XML file that adopt predefined XML descriptive model tissue to form, particularly, can organize formation by following steps:
File attribute and the contents attribute of step S1, extraction material file or program file;
Step S2, adopt predefined XML descriptive model to organize described file attribute and contents attribute, generate the XML object of described material file or program file;
Step S3, described XML object is carried out to persistence, store in database.
Wherein, described file attribute refers to that described contents attribute refers to the descriptor relevant to particular content in material file or program file for material file or program file descriptor generally speaking.In specific implementation, described file attribute can comprise ownership group information, process information-recording, extended attribute information and the classified information of file.The contents attribute of described material file specifically can comprise the format information of script holder's metadata information, version information, entity gauge point metadata information, the format information of audio file, the format information of video file, all include files, information, audiovisual metadata information, material entity file and associated metadata information, image attribute information and/or the text attribute information of entity file.The contents attribute of described program file, with respect to the contents attribute of material file, can further increase the items for information, the information of Series Sheet etc. that in Storyboard information, manuscript object information, Series Sheet, comprise.
In embodiments of the present invention, a large amount of multimedia programming (comprising material) carries out store and management according to normalized consolidation form.
With reference to figure 1, show the flow chart of steps of the acquisition methods embodiment 1 of a kind of multimedia programming of the present invention, specifically can comprise the following steps:
Step 101, ask to extract corresponding material XML file or program XML file and resolve according to user;
Step 102, the mode of specifying according to user are exported the multimedia programming after parsing.
For example, suppose to have in a material XML file code of following description text object type:
<TextFileType>
<TextFileID>CCTV?Subtitle?Sequence?File</TextFileID>
<Size>1000Mb</Size>
<Type>.txt</Type>
<TextFileType>
Can obtain through resolving, the file CCTV Subtitle Sequence File by name of text file, file size is 1000 Mbytes, the text formatting that file format is .txt.
In embodiments of the present invention, for the parsing of described XML file, adopt any mode of the prior art to generate corresponding resolver or analytical tool all can be realized, for example, adopt DOM resolver in internal memory, to set up the tree structure data corresponding with XML file, the mark of XML file, content of text, the entity etc. of mark all can be corresponding with certain node of the data of tree in internal memory.Can operate easily the node of setting in internal memory by an application program with DOM resolver and carry out processing XML document, obtain own required data.Certainly, aforesaid way is only as example, the present invention to this without restricting.
With reference to figure 2, show the flow chart of steps of the acquisition methods embodiment 2 of a kind of multimedia programming of the present invention, specifically can comprise the following steps:
The retrieval browse request that step 201, acquisition user submit to, described retrieval browse request comprises the object format information that key word information and browsing multimedia program are used;
Step 202, the material XML file or the program XML file that mate according to described key word information extraction, and described material XML file or program XML file are resolved;
Step 203, the multimedia programming that is object format by the multimedia programming transcoding after described parsing;
Step 204, play described multimedia programming.
Described transcoding refers to the multimedia data stream that a kind of multimedia data stream of Standards and formats is processed into the another kind of Standards and formats that is more adapted to certain application-specific.Taking video code conversion as example, it is usually directed to code check conversion, conversion of resolution (if high definition TV is to standard definition television), frame rate conversion (as video monitoring) and format conversion (as the mobile phone for MPEG-4 receives MPEG-2 digital television program) etc.In a concrete example, the process of video code conversion can comprise the following steps:
The user request of step T1, reception & disposal multi-medium data, the descriptor of analysis user request form, extracts the information such as frame per second, video size, bit rate and code check in this descriptor;
Step T2, source video format is analyzed, extracted frame per second, video size, code check, bit rate and motion vector information in video sequence;
Step T3, judge that whether source format is identical with the frame per second of object format, if different, the frame rate value of initialization transcoder, and perform step T4; Otherwise, directly perform step T4;
Step T4, judge that whether source format is identical with the image size of object format, if identical, directly perform step T5; Otherwise the image size of initialization transcoding, then performs step T5;
Step T5: judge that whether source format is identical with the bit rate size of object format, if so, directly perform step T6; Otherwise the bit rate of initialization transcoder, then performs step T6;
Step T6, beginning transcoding, then utilize the motion vector information in the video sequence frame of source, motion vector carried out revaluation and become more meticulous, by the time the motion vector information of object format video sequence:
Step T7, by the DTC domain coefficient of acquisition after conversion, carry out according to 64 keys, DTC domain coefficient is carried out to scramble according to algorithm;
Step T8, data after transcoding is completed encapsulate according to stream media protocol.
Certainly, the mode of above-mentioned transcoding processing is only as example, it is all feasible that those skilled in the art adopt any a few days ago popular Video Transcoding Technology, for example, motion vector (MV) mapping, the conversion of DCT (discrete cosine transform) territory and residual error revaluation (residual re-estimation) etc.
The present embodiment not only can facilitate user to obtain the program material that they want whenever and wherever possible, also provide content to support to new media business such as current Digital Television, the network media, mobile TV, mobile TVs, make the multi-medium data can be between heterogeneous network, between different types of access device and transparent exchange between different-format.
With reference to figure 3, show the flow chart of steps of the acquisition methods embodiment 2 of a kind of multimedia programming of the present invention, specifically can comprise the following steps:
The program download request that step 301, acquisition user submit to;
Step 302, the described program download request of foundation are extracted corresponding material XML file or program XML file, and described material XML file or program XML file are resolved;
Step 303, the multimedia programming after described parsing is entered to downloading task queue;
Step 304, carry out described downloading task queue, described multimedia programming is downloaded to the address that user specifies.
In specific implementation, user can submit download request to after retrieving, browsing, this request can enter into downloading task queue after examination & approval, by system control outbound, can also according to actual needs program or material be moved to each operational plates such as platform Intranet news, making, broadcast.Certainly, described downloading task also can specify medium to download by downloading work station, realizes the recycling of program or material various ways.
Consider the copyright problem of video and audio works in reality, in embodiments of the present invention, described user can be the user that process is authorized in advance.
It should be noted that, for aforesaid each embodiment of the method, for simple description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.And, in the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part of detailed description, can be referring to the associated description of other embodiment.
With reference to figure 4, show the structured flowchart of the acquisition device embodiment of a kind of multimedia programming of the present invention, wherein, described multimedia programming is that persistent storage is in database, the material XML file or the program XML file that adopt predefined XML descriptive model tissue to form, particularly, described material XML file or program XML file comprise as the material file of XML metadata or the file attribute of program file and contents attribute.Described file attribute specifically can comprise following information: ownership group information, process information-recording, extended attribute information and the classified information of file.The contents attribute of described material file specifically can comprise following information:
The format information of script holder's metadata information, version information, entity gauge point metadata information, the format information of audio file, the format information of video file, all include files, information, audiovisual metadata information, material entity file and associated metadata information, image attribute information and/or the text attribute information of entity file;
The contents attribute of described program file specifically can comprise following information:
The items for information comprising in the format information of script holder's metadata information, version information, entity gauge point metadata information, the format information of audio file, the format information of video file, all include files, the information of entity file, Storyboard information, manuscript object information, Series Sheet, information, audiovisual metadata information, program entity file and associated metadata information, image attribute information and/or the text attribute information of Series Sheet.
The present embodiment specifically can comprise with lower module:
Parsing module 401, for asking to extract corresponding material XML file or program XML file and resolving according to user;
Output module 402, exports the multimedia programming after parsing for the mode of specifying according to user.
In a preferred embodiment of the present invention, described user's request can be retrieval browse request, described retrieval browse request comprises the object format information that key word information and browsing multimedia program are used, in this case, the material XML file of described extraction or program XML file are material XML file or the program XML file of the described keyword of coupling, and described output module may further include following submodule:
Transcoding submodule, for the multimedia programming that is object format by the multimedia programming transcoding after described parsing;
Play submodule, for playing described multimedia programming.
In a preferred embodiment of the present invention, described user's request can be program download request, and in this case, described output module may further include following submodule:
Queuing submodule, for entering downloading task queue by the multimedia programming after described parsing;
Download submodule, for carrying out described downloading task queue, described multimedia programming is downloaded to the address that user specifies.
Because the present embodiment is substantially corresponding to preceding method embodiment, therefore not detailed part in the description of the present embodiment can, referring to the related description in previous embodiment, just not repeat at this.
The acquisition device of the acquisition methods to a kind of multimedia programming provided by the present invention and a kind of multimedia programming is described in detail above, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (6)
1. an acquisition methods for multimedia programming, is characterized in that, described multimedia programming be persistent storage in database, the material XML file or the program XML file that adopt predefined XML descriptive model tissue to form, described method comprises:
Ask to extract corresponding material XML file or program XML file and resolve according to user;
The mode of specifying according to user is exported the multimedia programming after parsing;
Wherein,
In the time that described user's request is program download request, the step of the multimedia programming after described output is resolved comprises: the multimedia programming after described parsing is entered to downloading task queue; Carry out described downloading task queue, described multimedia programming is downloaded to the address that user specifies;
In the time that described user's request is retrieval browse request, described retrieval browse request comprises the object format information that key word information and browsing multimedia program are used, and the material XML file of described extraction or program XML file are material XML file or the program XML file of the described keyword of coupling; The step of the multimedia programming after described output is resolved comprises: the multimedia programming that is object format by the multimedia programming transcoding after described parsing, and described multimedia programming file is video file; Play described multimedia programming;
The step of the multimedia programming that is wherein, object format by the multimedia programming transcoding after described parsing comprises: the video file after described parsing is carried out to video code conversion;
The process of described video code conversion comprises the following steps:
Step T1, user's request of reception & disposal multi-medium data, the descriptor of the object format of analysis user request, extracts frame per second, video size, bit rate and code check in this descriptor;
Step T2, analyzes the source video format of described video file, extracts frame per second, video size, code check, bit rate and motion vector information in video sequence;
Step T3, judges that whether source video format is identical with the frame per second of object format, if different, the frame rate value of initialization transcoder, and perform step T4; Otherwise, directly perform step T4;
Step T4, judges that whether source video format is identical with the image size of object format, if identical, directly performs step T5; Otherwise the image size of initialization transcoding, then performs step T5;
Step T5, judges that whether source video format is identical with the bit rate size of object format, if so, directly performs step T6; Otherwise the bit rate of initialization transcoder, then performs step T6;
Step T6, starts transcoding, then utilizes the motion vector information in the source video sequence frame of described video file, and motion vector is carried out revaluation and become more meticulous, and obtains the motion vector information of object format video sequence;
Step T7, by the discrete cosine transform domain coefficient of the described motion vector information of the acquisition after conversion, carries out scramble according to 64 keys and algorithm;
Step T8, the data after described scramble is completed encapsulate according to stream media protocol.
2. the method for claim 1, is characterized in that, described material XML file or program XML file comprise as the material file of XML metadata or the file attribute of program file and contents attribute.
3. the method for claim 1, is characterized in that, described user is the user that process is authorized in advance.
4. an acquisition device for multimedia programming, is characterized in that, described multimedia programming be persistent storage in database, the material XML file or the program XML file that adopt predefined XML descriptive model tissue to form, described device comprises:
Parsing module, for asking to extract corresponding material XML file or program XML file and resolving according to user;
Output module, exports the multimedia programming after parsing for the mode of specifying according to user;
Wherein, in the time that described user's request is program download request, described output module further comprises: queuing submodule, for the multimedia programming after described parsing being entered to downloading task queue; Download submodule, for carrying out described downloading task queue, described multimedia programming is downloaded to the address that user specifies;
In the time that described user's request is retrieval browse request, described retrieval browse request comprises the object format information that key word information and browsing multimedia program are used, and the material XML file of described extraction or program XML file are material XML file or the program XML file of the described keyword of coupling; Described output module further comprises: transcoding submodule, for the multimedia programming that is object format by the multimedia programming transcoding after described parsing; Play submodule, for playing described multimedia programming;
Wherein, described transcoding submodule is in the time of the multimedia programming that is object format by the multimedia programming transcoding after described parsing: the video file after described parsing is carried out to video code conversion;
The process of described video code conversion comprises:
Step T1, user's request of reception & disposal multi-medium data, the descriptor of the object format of analysis user request, extracts frame per second, video size, bit rate and code check in this descriptor;
Step T2, analyzes the source video format of described video file, extracts frame per second, video size, code check, bit rate and motion vector information in video sequence;
Step T3, judges that whether source video format is identical with the frame per second of object format, if different, the frame rate value of initialization transcoder, and perform step T4; Otherwise, directly perform step T4;
Step T4, judges that whether source video format is identical with the image size of object format, if identical, directly performs step T5; Otherwise the image size of initialization transcoding, then performs step T5;
Step T5, judges that whether source video format is identical with the bit rate size of object format, if so, directly performs step T6; Otherwise the bit rate of initialization transcoder, then performs step T6;
Step T6, starts transcoding, then utilizes the motion vector information in the source video sequence frame of described video file, and motion vector is carried out revaluation and become more meticulous, and obtains the motion vector information of object format video sequence;
Step T7, by the discrete cosine transform domain coefficient of the described motion vector information of the acquisition after conversion, carries out scramble according to 64 keys and algorithm;
Step T8, the data after described scramble is completed encapsulate according to stream media protocol.
5. device as claimed in claim 4, is characterized in that, described material XML file or program XML file comprise as the material file of XML metadata or the file attribute of program file and contents attribute.
6. device as claimed in claim 5, is characterized in that, described file attribute comprises ownership group information, process information-recording, extended attribute information and the classified information of file;
The contents attribute of described material file comprises the format information of script holder's metadata information, version information, entity gauge point metadata information, the format information of audio file, the format information of video file, all include files, information, audiovisual metadata information, material entity file and associated metadata information, image attribute information and/or the text attribute information of entity file;
The contents attribute of described program file comprises the items for information comprising in the information, Storyboard information, manuscript object information, Series Sheet of format information, the entity file of script holder's metadata information, version information, entity gauge point metadata information, the format information of audio file, the format information of video file, all include files, information, audiovisual metadata information, program entity file and associated metadata information, image attribute information and/or the text attribute information of Series Sheet.
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| CN102760146A (en) * | 2011-12-29 | 2012-10-31 | 新奥特（北京）视频技术有限公司 | Method and system for releasing and interacting news contents |
| US20130232144A1 (en) * | 2012-03-01 | 2013-09-05 | Sony Pictures Technologies, Inc. | Managing storyboards |
| CN103002336A (en) * | 2012-11-15 | 2013-03-27 | 深圳市九洲电器有限公司 | Data browsing method and device and set-top box |
| CN103546725A (en) * | 2013-10-24 | 2014-01-29 | 北京百纳威尔科技有限公司 | Mobile phone client and remote video monitor and control system and method |
| CN108268432B (en) * | 2017-12-14 | 2022-02-01 | 中央电视台 | Program engineering file conversion method and device |
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