CN102802021B - A kind of method of editing multimedia data and device - Google Patents
A kind of method of editing multimedia data and device Download PDFInfo
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- CN102802021B CN102802021B CN201210279935.9A CN201210279935A CN102802021B CN 102802021 B CN102802021 B CN 102802021B CN 201210279935 A CN201210279935 A CN 201210279935A CN 102802021 B CN102802021 B CN 102802021B
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Abstract
The invention discloses a kind of method and device of editing multimedia data.Described method comprises: pending multi-medium data is reduced into original coding multi-medium data; Described original coding multi-medium data is decoded, obtains high code check multimedia data stream; Decoding re-encoding is carried out to described original coding multi-medium data, obtains low bit-rate multimedia data stream; Synchronous described high code check multimedia data stream and low bit-rate multimedia data stream; To described synchronous after low bit-rate multimedia data stream edit and obtain edit file; According to described edit file, the high code check multi-medium data stream file after synchronous is edited.The invention also discloses the device for realizing described method.
Description
Technical field
The present invention relates to digital television techniques field, particularly relate to a kind of method and device of editing multimedia data.
Background technology
Digital TV in high resolution HDTV(HighDefinitionTV) be one the highest in digital television standard, its video at least must possess 720 line noninterlaced (720p, namely what is often called is line by line) or 1080 line alternating expression interlacing (1080i, namely what is often called interlacing) scanning (DVD:DigitalVersatileDisc standard is 480 lines), aspect ratio is 16:9.It is 5.1 sound channels (Dolby Digital forms) that audio frequency exports, and can the digitized process of going forward side by side of the signal of other lower form of compatible receiver reset simultaneously.
HDTV program has higher image quality and sound quality compared with traditional tv program, also need the huge network bandwidth to carry very high code check simultaneously, this is not also problem in the cable TV of individual transmission, but when needing to edit again HDTV, owing to needing huge Internet Transmission, the problem of transmission bottleneck will be brought.
After the HDTV media stream of broadcasting signal being collected by various receiving and recording equipment, edit needing the file carrying out high-definition multimedia reprocessing, general way is that huge HDTV video file is copied on the computer of multi-media edit, by various editing system (as non-thread compiles software or hardware device), directly HDTV file is edited, then carry out the video content of cutting into slices, transcoding is processed into needs, and then broadcast; Another method comparing compromise is that the HDTV multimedia file of high code check is transcoded into lower and acceptable low bit-rate multimedia file, then at the enterprising edlin of the media stream of this low bit-rate, then produce SDTV(StandardDefinitionTV) multimedia file broadcast.This is a kind of to lose video quality to exchange for the ageing a kind of compromise algorithm of editor; A kind of method is also had to be the HDTV TV signal of directly including the broadcast of the TV station such as satellite or cable TV, then by Internet Transmission on multi-media edit computer, directly edit including the multimedia of getting off, and then the HDTV Multimedia Data Transmission editted is broadcasted to needs broadcast or other desired place.
In above-mentioned existing HDTV multimedia secondary treatment system, there is following shortcoming:
First, because HDTV has very high code check, preserve into file when carrying out reprocessing, need to take very large disk space, simultaneously because needs are transferred to the enterprising edlin of editor's computer, the transmission time is very long, and this will need the cost of very large bandwidth sum memory space, if carry out long-distance video editor by the Internet, this can not realize.
Second, the editing and processing time is long again, editorial staff needs the multi-medium data of complete HDTV to download to this locality, then editor is just started, the time of such editor one section of video cost will be very long, be unfavorable for increasing work efficiency, simultaneously very high to the performance requirement of editor's computer, this will increase the cost of whole editing system.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of editing multimedia data, directly HDTV multi-medium data is edited again for realizing, and do not need to consume huge memory space and the network bandwidth, and actual effect and operating efficiency that HDTV multimedia file is edited can be improved again, reduce equipment cost and personnel cost.
A method for editing multimedia data, comprises the following steps: pending multi-medium data is reduced into original coding multi-medium data; Described original coding multi-medium data is decoded, obtains high code check multimedia data stream; Decoding re-encoding is carried out to described original coding multi-medium data, obtains low bit-rate multimedia data stream; Synchronous described high code check multimedia data stream and low bit-rate multimedia data stream; To described synchronous after low bit-rate multimedia data stream edit and obtain edit file; According to described edit file, the high code check multi-medium data stream file after synchronous is edited.Adopt this technical scheme, the high processing cost that the huge memory space that consumes when directly editing again multi-medium data and the high network bandwidth bring can be solved, by obtaining edit file to low bit-rate multimedia file editor and editing synchronous high code check multimedia file again according to edit file, do not need to transmit high code check multimedia file in a network, save the network bandwidth and editor's cost.Improve the operating efficiency to the ageing and editor that multi-medium data is edited again simultaneously, reduce equipment cost and personnel cost.
In technique scheme, preferably, described described pending multi-medium data is reduced into original coding multi-medium data step before also comprise: gather high-definition multimedia data.Current most of high-definition multimedia data all derive from digital TV in high resolution, from TV programme, directly gather high-definition multimedia data to go forward side by side edlin, can promote editorial efficiency.
In technique scheme, preferably, described decoding re-encoding is carried out to described original coding multi-medium data, also comprise after obtaining the step of low bit-rate multimedia data stream: carry out multiplexing to described high code check multimedia data stream and low bit-rate multimedia data stream.Two kinds of different decode operations can be carried out by a communication line to original multimedia data by multiplex technique simultaneously, save Internet resources and bandwidth.
In technique scheme, preferably, described high-definition multimedia data comprise digital television program, high-definition television programs or standard clarity television program.
In technique scheme, preferably, described described original coding multi-medium data to be decoded, obtain high code check multi-medium data flow step and comprise further, when including, described original coding high-definition multimedia data are alignd.Adopting this technical scheme, the error occurred when can eliminate Internet Transmission and encoding and decoding when including high code check multimedia file, obtaining the multi-medium data of better quality.
Adopting this technical scheme, the error occurred when can eliminate Internet Transmission and encoding and decoding when including high code check multimedia file, obtaining the multi-medium data of better quality.Also comprise after the step of described synchronous described high code check multimedia data stream and low bit-rate multimedia data stream: the high code check multimedia data stream and low bit-rate multimedia data stream that carry out frame synchronization are exported the file into predetermined format respectively.Better can adapt to the edit tool of editorial staff by exporting predetermined format file, promoting treatment effeciency.
Present invention also offers the device for realizing the method.
A kind of device of editing multimedia data, it is characterized in that, comprise recovery module, high code check decoder module, low bit-rate decoder module, synchronization module, low bit-rate editor module and high code check editor module, wherein said recovery module, for being reduced into original coding multi-medium data by pending multi-medium data; Described high code check decoder module, for decoding to described original coding multi-medium data, obtains high code check multimedia data stream; Described low bit-rate decoder module, for re-encoding after decoding to described original coding multi-medium data, obtains low bit-rate multimedia data stream; Described synchronization module, for synchronous described high code check multimedia data stream and low bit-rate multimedia data stream; Described low bit-rate editor module, for described synchronous after low bit-rate multimedia data stream edit and obtain edit file; Described high code check editor module, for editing the high code check multi-medium data stream file after synchronous according to described edit file.
In technique scheme, preferably, also comprise acquisition module, be connected with described recovery module, for gathering high-definition multimedia data.
In technique scheme, preferably, also Multiplexing module is comprised, side is connected with recovery module, opposite side is connected with high code check decoder module and low bit-rate decoder module, described Multiplexing module, for carrying out multiplexing to described high code check multimedia data stream and low bit-rate multimedia data stream.
In technique scheme, preferably, when described decoder module is also for including, described original coding high-definition multimedia data are alignd.
In technique scheme, preferably, also comprise output module, be connected with described low bit-rate editor module and high code check editor module, described output module, for exporting the file into predetermined format respectively by the high code check multimedia data stream and low bit-rate multimedia data stream that carry out frame synchronization.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart of the method for a kind of editing multimedia data in the embodiment of the present invention;
Fig. 2 is the flow chart of the method for another kind of editing multimedia data in the embodiment of the present invention;
Fig. 3 is the structural representation of the device of a kind of editing multimedia data in the embodiment of the present invention;
Fig. 4 is the structural representation of the device of another kind of editing multimedia data in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Core concept of the present invention is, by producing two high low bit-rate but the multimedia file of frame synchronization simultaneously, then in the enterprising edlin mark of the media stream of low bit-rate, and identification information is returned to server, suit with the media stream of information to high code check of low bit-rate mark on the server, doing so avoids media stream at transmission over networks height code check with cost-saving, improve editorial efficiency simultaneously.
As shown in Figure 1, a kind of method of editing multimedia data, comprises the following steps:
Step 101, pending multi-medium data is reduced into original coding multi-medium data;
Step 102, described original coding multi-medium data to be decoded, obtain high code check multimedia data stream;
Step 103, decoding re-encoding is carried out to described original coding multi-medium data, obtain low bit-rate multimedia data stream;
Step 104, synchronous described high code check multimedia data stream and low bit-rate multimedia data stream;
Step 105, to described synchronous after low bit-rate multimedia data stream edit and obtain edit file;
Step 106, according to described edit file, the high code check multi-medium data stream file after synchronous to be edited.
As shown in Figure 2, the embodiment of the present invention additionally provides the method for another kind of editing multimedia data, comprises the following steps:
Step 201, collection multi-medium data, generate pending multimedia data stream;
Described multi-medium data is digital television program DTV(DigitalTelevision), high-definition television programs HDTV(HighDefinitionTV) high definition TV or standard clarity television program SDTV(StandardDefinitionTV).
Step 202, described pending media stream is carried out data demultiplexing, be reduced into original coding multi-medium data; Original coding multi-medium data after demultiplexing needs respectively through step 103 and 104 process.
Step 203, described original coding multi-medium data to be included, obtain high code check multimedia data stream; This step does not need to carry out encoding and decoding to original video, in order to obtain the high code check multimedia data stream of more good quality, can align when including to described original coding multi-medium data.
Step 204, decoding re-encoding is carried out to described original coding multi-medium data, obtain low bit-rate multimedia data stream; Through the process of re-encoding, original coding multi-medium data just becomes the lower multimedia data stream of the code check that is suitable for Internet Transmission.
Step 205, carry out multiplexing to described high code check multimedia data stream and low bit-rate multimedia data stream.
Step 206, synchronous described high code check multimedia data stream and low bit-rate multimedia data stream; Because high code check multimedia data stream and low bit-rate multimedia data stream are not synchronous on time point, therefore need through a synchronous process, the multimedia controlling each vertical frame dimension low bit-rate exports and reaches high code check and include frame synchronization between low bit-rate editor.Synchronously process when step 205 is multiplexing to high low bit-rate multimedia data stream, just can make the high low bit-rate multimedia data stream Complete Synchronization after output.
Step 207, the high code check multimedia data stream and low bit-rate multimedia data stream that carry out frame synchronization are exported the file into predetermined format respectively.The file of predetermined format is applicable to editorial staff and edits it.
Step 208, low bit-rate multi-medium data stream file is edited and obtained edit file; This edit file comprises: speech recognition, video frame content analysis, advertisement analysis, the edit files such as video demolition.
Step 209, according to described edit file, high code check multi-medium data stream file to be edited.According to advertisement analysis information the advertising message in high code check multi-medium data stream file torn open and cut; According to video demolition information, different video content in high code check multi-medium data stream file is split into, independent vide program file one by one; Extract the text message in video and the text message after speech recognition according to video content analysis and carry out information binding, so that this section of video can be retrieved through the high code check multi-medium data stream file of editor.
Have employed technical scheme of the present invention, high definition can be solved and include the huge network bandwidth and carrying cost pressure editing and bring, such as: the HD video of 1.5 hours, calculate by 20Mbps code check, will produce: the file of 1.5*3600*20=108000Mbps, if the editor's computer needing this file to be sent to editorial staff in 5 minutes needs bandwidth be: the bandwidth of 108000/ (5*60)=360Mbps, this or a high-definition data, if want 10 HD videos, so just need the bandwidth of 360*10=3.6Gbps; If employing the technical program, what the computer being sent to editor carried out editing is low bit-rate multimedia, if the code check pressing low bit-rate 0.512Mbps calculates, the file that low bit-rate generates is: 1.5*3600*0.512=2764.8Mbps size, the bandwidth also needed by the computer being sent to editor in 5 minutes is: 2764.8/ (5*60)=9.216Mbps bandwidth, if 10 videos i.e. 100Mbps bandwidth, so greatly save the significant cost that the network bandwidth brings.
In addition because bandwidth requirement reduces, the time of transfer files also shortens greatly, simultaneously owing to using the media stream of low bit-rate to edit, also greatly reduces, but also improve the editorial efficiency of editorial staff to the performance requirement of editor's computer.
As shown in Figure 3, present invention also offers a kind of device for realizing the method.
Comprise recovery module 301, high code check decoder module 302, low bit-rate decoder module 303, synchronization module 304, low bit-rate editor module 305 and high code check editor module 306, wherein
Described recovery module 301, for being reduced into original coding multi-medium data by pending multi-medium data; Described high code check decoder module 302, for decoding to described original coding multi-medium data, obtains high code check multimedia data stream; Described low bit-rate decoder module 303, for re-encoding after decoding to described original coding multi-medium data, obtains low bit-rate multimedia data stream; Described synchronization module 304, for synchronous described high code check multimedia data stream and low bit-rate multimedia data stream; Described low bit-rate editor module 305, for described synchronous after low bit-rate multimedia data stream edit and obtain edit file; Described high code check editor module 306, for editing the high code check multi-medium data stream file after synchronous according to described edit file.
As shown in Figure 4, the embodiment of the present invention additionally provides the device that another kind realizes the method, comprises acquisition module 401, recovery module 402, Multiplexing module 403, high code check decoder module 404, low bit-rate decoder module 405, synchronization module 406, low bit-rate editor module 407, high code check editor module 408 and output module 409.
Acquisition module 401, is connected with described recovery module 402, for gathering high-definition multimedia data.
Multiplexing module 403, side is connected with recovery module 402, and opposite side is connected with high code check decoder module 404 and low bit-rate decoder module 405, for carrying out multiplexing to described high code check multimedia data stream and low bit-rate multimedia data stream.
Output module 409, is connected with low bit-rate editor module 407 and high code check editor module 408 respectively, for the high code check multimedia data stream and low bit-rate multimedia data stream that carry out frame synchronization being exported respectively the file into predetermined format.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a method for editing multimedia data, is characterized in that, comprises the following steps:
Pending multi-medium data is reduced into original coding multi-medium data;
Described original coding multi-medium data is decoded, obtains high code check multimedia data stream;
Decoding re-encoding is carried out to described original coding multi-medium data, obtains low bit-rate multimedia data stream;
Synchronous described high code check multimedia data stream and low bit-rate multimedia data stream;
To described synchronous after low bit-rate multimedia data stream edit and obtain edit file, described edit file comprises: speech recognition, video frame content analysis, advertisement analysis, the edit files such as video demolition;
According to described edit file, the high code check multi-medium data stream file after synchronous is edited, comprising: according to advertisement analysis information the advertising message in high code check multi-medium data stream file torn open and cut; According to video demolition information, different video content in high code check multi-medium data stream file is split into, independent vide program file one by one; Extract the text message in video and the text message after speech recognition according to video content analysis and carry out information binding through the high code check multi-medium data stream file of editor;
Described decoding re-encoding is carried out to described original coding multi-medium data, also comprises after obtaining the step of low bit-rate multimedia data stream:
Carry out multiplexing to described high code check multimedia data stream and low bit-rate multimedia data stream.
2. the method for claim 1, is characterized in that, described described pending multi-medium data is reduced into original coding multi-medium data step before also comprise: gather high-definition multimedia data.
3. method as claimed in claim 2, it is characterized in that, described high-definition multimedia data comprise digital television program, high-definition television programs or standard clarity television program.
4. the method for claim 1, is characterized in that, describedly decodes to described original coding multi-medium data, obtains high code check multi-medium data flow step and comprises further, align when including to described original coding high-definition multimedia data.
5. the method for claim 1, is characterized in that, also comprises after the step of described synchronous described high code check multimedia data stream and low bit-rate multimedia data stream:
The high code check multimedia data stream and low bit-rate multimedia data stream that carry out frame synchronization are exported the file into predetermined format respectively.
6. a device for editing multimedia data, is characterized in that, comprises recovery module, high code check decoder module, low bit-rate decoder module, synchronization module, low bit-rate editor module and high code check editor module, wherein
Described recovery module, for being reduced into original coding multi-medium data by pending multi-medium data;
Described high code check decoder module, for decoding to described original coding multi-medium data, obtains high code check multimedia data stream;
Described low bit-rate decoder module, for re-encoding after decoding to described original coding multi-medium data, obtains low bit-rate multimedia data stream;
Described synchronization module, for synchronous described high code check multimedia data stream and low bit-rate multimedia data stream;
Described low bit-rate editor module, for described synchronous after low bit-rate multimedia data stream edit and obtain edit file, described edit file comprises: speech recognition, video frame content analysis, advertisement analysis, the edit files such as video demolition;
Described high code check editor module, for editing the high code check multi-medium data stream file after synchronous according to described edit file, comprising: according to advertisement analysis information the advertising message in high code check multi-medium data stream file torn open and cut; According to video demolition information, different video content in high code check multi-medium data stream file is split into, independent vide program file one by one; Extract the text message in video and the text message after speech recognition according to video content analysis and carry out information binding through the high code check multi-medium data stream file of editor;
Multiplexing module, side is connected with recovery module, and opposite side is connected with high code check decoder module and low bit-rate decoder module, described Multiplexing module, for carrying out multiplexing to described high code check multimedia data stream and low bit-rate multimedia data stream.
7. device as claimed in claim 6, is characterized in that, also comprise acquisition module, be connected with described recovery module, for gathering high-definition multimedia data.
8. device as claimed in claim 6, is characterized in that, aliging when described decoder module is also for including to described original coding high-definition multimedia data.
9. device as claimed in claim 6, it is characterized in that, also comprise output module, side is connected with described synchronization module, opposite side is connected with described low bit-rate editor module, described output module, for exporting the file into predetermined format respectively by the high code check multimedia data stream and low bit-rate multimedia data stream that carry out frame synchronization.
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| CN104052912B (en) * | 2013-03-11 | 2019-03-15 | 腾讯科技（深圳）有限公司 | Handle the method and device of video |
| CN104703051B (en) * | 2014-01-06 | 2018-06-05 | 杭州海康威视数字技术股份有限公司 | Code stream sending method and device |
| CN104796732B (en) * | 2015-04-21 | 2018-05-08 | 无锡天脉聚源传媒科技有限公司 | A kind of audio and video edit methods and device |
| CN104780389B (en) * | 2015-04-21 | 2018-01-05 | 无锡天脉聚源传媒科技有限公司 | A kind of method for processing video frequency and device |
| EP3308548A1 (en) | 2015-06-15 | 2018-04-18 | Piksel, Inc. | Processing content streaming |
| CN106162225A (en) * | 2016-07-28 | 2016-11-23 | 杭州当虹科技有限公司 | A kind of high timeliness editor's live video method based on agency's stream |
| CN108881472B (en) * | 2018-07-09 | 2019-03-29 | 掌阅科技股份有限公司 | The processing method of electronic book documentary, electronic equipment, storage medium |
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| CN1404302A (en) * | 2001-09-05 | 2003-03-19 | 北京中科大洋科技发展股份有限公司 | TV program making system and method with double-bit rate video stream |
| CN101223595A (en) * | 2005-07-15 | 2008-07-16 | 汤姆森许可贸易公司 | Method and system for remote digital editing by narrow-band channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1404302A (en) * | 2001-09-05 | 2003-03-19 | 北京中科大洋科技发展股份有限公司 | TV program making system and method with double-bit rate video stream |
| CN101223595A (en) * | 2005-07-15 | 2008-07-16 | 汤姆森许可贸易公司 | Method and system for remote digital editing by narrow-band channel |
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Denomination of invention: Method and device for editing multi-media data Effective date of registration: 20170401 Granted publication date: 20160120 Pledgee: Silicon Valley Bank Co.,Ltd. Pledgor: WUXI TVMINING MEDIA SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: 2017310000018 |
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