CN106791539A - A kind of storage of film digital program and extracting method - Google Patents
A kind of storage of film digital program and extracting method Download PDFInfo
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- CN106791539A CN106791539A CN201611217598.5A CN201611217598A CN106791539A CN 106791539 A CN106791539 A CN 106791539A CN 201611217598 A CN201611217598 A CN 201611217598A CN 106791539 A CN106791539 A CN 106791539A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N5/91—Television signal processing therefor
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Abstract
Storage and extracting method the present invention relates to a kind of film digital program, including the step of：Picture file is gathered；Picture file compresses；Audio files is gathered；Sound picture synchronization；Turn low bit- rate；Cataloguing；Storage issue.Retrieval film；Browse substance film；Submit download request to；Transcoding synthesizes；Output.The present invention is by picture compression and browses the modes such as increase multilingual, on the premise of at utmost film sound picture quality is ensured, reduces the memory space of film multi version, and optimization film storage manufacturing process improves efficiency during film application.Simultaneously by way of speech and picture are stored separately, it is allowed to which the dialogue and captions of various speeches are produced, form picture and captions, the miscellaneous editions of language, to adapt to various users the need for.
Description
Technical field
Storage and extracting method the present invention relates to a kind of film digital program, are a kind of sides of computer data storage
Method, is a kind of by cinefilm or the movie program of magnetic tape recording, is changed to towards multilingual, the convenient standard for utilizing by all kinds of means
Afterwards, the method for storing and extracting.
Background technology
Film prophase shoot mainly uses film photographic, or the digital filming for gradually rising in recent years.The sound of shooting record,
Picture is stored using separate mode, and picture is recorded in film, and SoundRec is in audiotape.During the editing of film later stage,
Different language voice, captions, mute can be produced to be combined with multilingual voice, captions, form various mother matrixs of film, as
The basis that follow-up Moviemaking, distribution, value are excavated again, film mother matrix need to be stored using quality as far as possible high.
Existing mode is stored using video-tape.Video-tape can be while stored picture and sound, producer elder generation
Movie pictures are recorded in video-tape, then find the synchronous point of picture sound, sound is recorded to the audio of video-tape one by one
Track, sound and picture can be reduced synchronously during to play back.Same portion's film, different languages are, it is necessary to according to above method
Polydisc video-tape is made respectively to be preserved.If it is required that movie pictures display spolen title, also needs to record more video-tapes.
Because the characteristics of there is multilingual multi version in motion pictures, existing video-tape storage mode, required video recording ribbon amount meeting
It is very big, it is with high costs.Cause the storage of discard portion mother matrix of having to, the substitute is and remake when utilizing future.
Video-tape can only store the film of HD specifications simultaneously, and the film specification new for 2K, 4K, 3D etc. cannot then be supported.
The content of the invention
To solve problem of the prior art, the present invention proposes a kind of film digital program storage and extracting method.Described
On the premise of method is intended at utmost ensure film sound picture quality, the memory space of film multi version is reduced, optimization film is deposited
Storage manufacturing process, improves efficiency during film application.
The object of the present invention is achieved like this：A kind of storage method of film digital program, what methods described was used
System includes：Picture file compression subsystem, audio collection subsystem, sound picture synchronization subsystem, low bit- rate transcoding subsystem, volume
The step of mesh subsystem, matchmaker's money database, multilingual acquisition subsystem, spolen title make subsystem, methods described is as follows：
The step of picture file is gathered：For gathering movie pictures mother matrix, if film mother matrix picture source turns magnetic for glue, scan
Generation image sequence file, if film mother matrix is digital cinema master, directly collection is image sequence file；
The step of picture file compresses：For picture file compression subsystem by image sequence file transcoding be Lossless Compression video
File；
The step of audio files is gathered：Collection, collection life are digitized to the audiotape of film for audio collection subsystem
Into the audio files of the multichannel of PCM sample, this step or with " the step of picture file is gathered " and " picture file compress step
Suddenly it is " synchronous to carry out；
The synchronous step of sound picture：For picture file and audio files by collection is separated, carried out in sound picture synchronization subsystem
Sound picture synchronization, main method is to browse video and audio on the time line, with image content as object of reference, by sound waveform,
Acoustic playback finds audio ＆ video side-play amount in time, cheap amount is adjusted repeatedly so that the picture shape of the mouth as one speaks is reached with sound
Matching, after confirming side-play amount, the synchronized relation of locking sound and video；
The step of turning low bit- rate：The Lossless Compression video and audio files of film are read for transcoding cluster subsystem, according to same
Step relation generates low bit- rate video-voice frequency flow media file, the time-code of the low bit- rate file and the time-code frame of Lossless Compression video file
Frame correspondence；
The step of cataloguing：For that with reference to low bit- rate video and audio file, Catalog can be carried out to film, including：
Program layer to film is catalogued, and fills in the essential information of film；
Low bit- rate audio-visual content is browsed, access point is marked on a player, is gone out a little, be a piece by content record between out points
Section, catalogues fragment, fills in the attribute information of fragment；Or based on low bit- rate mark scene, camera lens, compiled in detail respectively
Mesh；Inventory information provides database and is stored using matchmaker；
The step of storage issue：After the completion of cataloguing, film is storage and externally issues, and is browsed for user search.
Further, described storage method also includes：
The step of augmenting multilingual sound collection：For audio collection subsystem by each newly-increased languages sound collection be many sound
Road audio files；
The synchronous step of multilingual sound picture：Low bit-rate video for using mother matrix in storehouse is object of reference, in sound picture synchronization system
The middle time-code for finding newly-increased languages sound is cheaply measured, the cheap amount of adjustment so that the picture shape of the mouth as one speaks is reached with sound and matched, and is locked new
Increase the synchronized relation of languages sound and picture；
The step of addendum file is put in storage：For the audio files of each languages augmented to be entered into matchmaker's money database purchase；Enter matchmaker's money number
Behind storehouse, the file of every film storage be respectively a high-resolution Lossless Compression video file, multilingual audio files,
Between spolen title file, a low bit- rate video and audio file of multi-channel sound file, multiple languages, these files on time-code
It is that frame frame is corresponding.
Further, described storage method also includes：
The step of making spolen title：Low bit- rate video and audio for using mother matrix in storehouse is object of reference, in subtitle making system
In, video and audio is played back, and spolen title is made according to picture, sound sentence by sentence, form the spolen title file with time-code information；
The step of addendum file is put in storage：For the spolen title file of each languages augmented to be entered into matchmaker's money database purchase respectively；
After entering matchmaker's money database, the file of every film storage is respectively a high-resolution Lossless Compression video file, multilingual
Audio files, multi-channel sound file, spolen title file, a low bit- rate video and audio file, these files of multiple languages
Between on time-code be that frame frame is corresponding.
A kind of extracting method of the film digital program for extracting above-mentioned storage file, the system bag that methods described is used
Include：Retrieval subsystem, subsystem, lower subsystems, transcoding synthesis subsystem, output end are browsed, methods described includes following step
Suddenly：
The step of retrieval film：To film in for providing database in matchmaker by way of full text, keyword in retrieval subsystem
Retrieved, retrieval result will list all motion pictures；
The step of browsing substance film：For entering film details, the detailed inventory information of film is checked, while broadcasting browses film
Low bit- rate audio-visual content；
The step of submitting download request to：Film mother matrix is browsed for what is chosen, application is downloaded；Selected during download：
Film video and audio file, certain languages audio file, certain languages subtitle file, and set the form of downloading object file；
Video format may be selected：4K, 2K, HD, SD or other low bit- rate forms；
Entire chapter is downloaded or selection is downloaded：Selection entire chapter is downloaded and then downloads complete film, and selection is downloaded and then chooses fragment or scene
Or camera lens is downloaded；
The step of transcoding synthesizes：For transcoding subsystem according to download request, video and audio, audio, subtitle file are read with timely
Code relation, carries out transcoding synthesis, generates film format file set in advance；
The step of output：Film format file for that will synthesize is exported by output end.
The beneficial effect comprise that：The present invention is by picture compression and browses the modes such as increase multilingual,
On the premise of at utmost ensureing film sound picture quality, the memory space of film multi version is reduced, optimization film storage made
Journey, improves efficiency during film application.Simultaneously by way of speech and picture are stored separately, it is allowed to the dialogue of various speeches and
Captions produce, formed picture and captions, the miscellaneous editions of language, to adapt to various users the need for.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the systematic schematic diagram that the methods described of the embodiment of the present invention one is used；
Fig. 2 is the flow chart of the methods described of the embodiment of the present invention one；
Fig. 3 is the embodiment of the present invention two, the flow chart of three methods describeds；
Fig. 4 is the systematic schematic diagram that the methods described of the embodiment of the present invention four is used；
Fig. 5 is the flow chart of the methods described of the embodiment of the present invention four.
Specific embodiment
Embodiment one：
The present embodiment is a kind of storage method of film digital program.The system that the present embodiment methods described is used includes：Draw
Face compressing file subsystem, audio collection subsystem, sound picture synchronization subsystem, low bit- rate transcoding subsystem, Catalogue, matchmaker
Money database, multilingual acquisition subsystem, spolen title make subsystem, as shown in figure 1, the flow of methods described such as Fig. 2
It is shown.
System described in the present embodiment takes double web frames and in the way of SD material carries out preediting.
Double web frames：Double web frames cause that video/audio is exchanged and information data is exchanged and each uses different links.
Avoid waste investment or link obstructions, it is ensured that various data are unblocked.
Preediting is carried out with SD material：Much cheaper than high definition device of SD equipment, reduce investment outlay；SD source material flow
Amount is much smaller, reduces to network, the bandwidth requirement of memory；SD editing speed is fast, is first edited with SD, it is possible to reduce examine
What piece was likely to result in updates the spent time, is conducive to improving efficiency.
Picture file compression subsystem：Film digital program platform and AMS（High definition part）Middle vision signal
Using Lossless Compression（lossless）Algorithm, therefore, the program code check after compression is higher.To the section of 1920 × 1080 resolution ratio
For mesh, its code check can be in 400Mbps（50MB/s）Left and right.The code check so high quick transmission in Ethernet is impossible
Realize, the storage area network technology that the present embodiment is combined using optical fiber with Ethernet, organize web frame in pairs, realize regarding
The common transport of voice data and control information.
Simultaneously, it is contemplated that high-definition program code check is very high, if each editor's website is compiled using high definition material
Volume, not only make equipment investment high（High definition device is all very expensive）, the quantity of website also limited by on-line storage body bandwidth
Cannot extend, editor and processing speed are also greatly affected.From the angle of optimization system schema, compiled this embodiment introduces dicode rate
The technology of collecting.
Video material in film digital program platform and AMS saves two kinds of forms of high standard definition：It is a kind of
It is the Lossless Compression high definition material of code check high, for producing final program in blocks, is subdivided into 24psf and two versions of 50i；Separately
A kind of is the relatively low SD material of code check, is broadcasted for carrying out high definition preediting or Standard Definition Television, using ripe MPEG2 lattice
Formula, resolution ratio selection 720 × 576, code check is limited in 50Mbps；
In high definition editing process, first preediting is carried out using SD material.Because there is the corresponding mirror of frame frame in high standard definition material
As relation, so after preediting, according to EDL yards of single information, the synthesis of high definition material is carried out by backstage synthesis system, it is possible to
The high-definition program made.
In editor's application of film digital program platform, double nets of movie program, dicode rate editing technique are first-selected systems
Make mode, it will bring numerous benefits such as low cost, high efficiency.
Low bit- rate transcoding subsystem：Conversion between the main video and audio file for realizing different-format, there is provided various code streams
Conversion selection, it is possible to complete the automatic work for extracting key frame；Another vital task of the subsystem is to complete film
Film material content exchange work between digital program storage and outer application system, is an interface with external system.
Audio collection subsystem：If the video/audio of all versions is all directly stored, due to Lossless Compression
HD video has the code check of 400Mbps or so, will bring powerful obstruction to storage multi version program in blocks.
Therefore, the present embodiment realizes that multi version program optimizes storage, i.e. complete video file+multi-lingual using many rail technologies
The single multiple combination of audio file++ EDL yards of multi-language captions file is planted, the mode of correspondence different editions solves this problem.
Because the film version of different language is dialogue sound different with spolen title, a film is with 50i versions
Based on complete video file and international sound frequency file, various need can be constituted with reference to multilingual sound and subtitle file
The film version wanted.
For the film that partial content needs limitation, according to examination ＆ verification demand, after software for editing carries out editing, one is formed
Individual version, actually this editing is the editor to time-code information.Storage system need not store program in blocks, but storage is wrapped
Contained all clip informations of the version EDL yards is single.By the EDL yards of single information and film material, at any time may be used
Directly to produce corresponding program in blocks.When the program in blocks of certain version needs called, original high definition is regarded sound by system
Frequently, captions material is moved back to, and corresponding EDL yards dullness is returned, and by backstage synthesis system, automatically forms required program.
For 24psf versions, due to having clear and definite time-code corresponding relation with 50i versions, support also may be used by backstage algorithm
Frame alignment is carried out with more accurate, it is ensured that the efficiency of recycling.
For the multi version phenomenon of movie program, this method of the present embodiment can save substantial amounts of memory space, should
Use also more flexible.The use of the technology, for library of programmes, with important practical significance.
Sound picture synchronization subsystem：Subtitles for movies is general to be existed in the form of script holder's captions, the field of regular studio
Note captions can not only record the content of dialogue, can also record the time of dialogue generation, and this time will be with the picture of cinefilm
Face lattice number is measured.After movie program digitlization, spolen title will also be included into platform as a kind of independent material
Management.Digital platform requirement spolen title is corresponding with the time-code of video-audio program, it is therefore desirable to film script holder captions and program
Form conversion between the spolen title of storehouse.
When there is multiple language versions in a film, it is not necessary to the multiple video files of storage, it is only necessary to which storage is without word
The original video of curtain, then corresponding captions version is equipped with, can obtain the shadow of required language version with video by mixing captions
Piece.
Spolen title is stored separately with video, and carries time-code information so that make the work of different language version captions
Become fairly simple.
The application of multilingual spolen title treatment technology, for reduces cost, abundant application and simple flow are all served
Important effect.
The multilingual dialogue treatment technology feature of the present embodiment：
Spolen title is stored, is optionally combined respectively with video and audio, reduce because spolen title is different and caused by amount of storage increase.
Script holder's captions are automatically converted to movie program spolen title, it is to avoid the work of manual edit spolen title, reduce
The working strength of editor's spolen title, improves the degree of accuracy of spolen title.
The spolen title of storage exists in unique file form, can as needed select font, font size, and flexibility is big,
So that changing captions effect, changing the job simplifications such as languages.
Enough information is contained in spolen title form, high-definition movie is broadcasted or captions and picture are superimposed to tackle.
Matchmaker provides database：In order to realize the value maximization of film, the program material preserved in matchmaker's money database will be
Whole film material.And from the angle of application, for different issue direction, different customer groups, a high-definition movie
Program material may correspond to multiple versions in flakes.Due to taking the mode of single languages file storage, multilingual, multi version section
Mesh coexists simultaneously, but does not increase memory space but.During modification program, the editor basis of last time can be based on, than remaking
The efficiency of editor is much higher, efficient and convenient.Search, delete processing all than storing whole convenience in blocks, is easy to management.
Matchmaker's money database described in the present embodiment is intended for film applications, also facing in HDTV application, therefore, from inspection
The angle of rope inquiry says that the catalogue standard that different application is used is different.In order to realize the increment of library of programmes using maximization, it should
Fully combine the cataloguing feature and TV catalogue standard of film.
In original TV and film catalogue standard, the volume to cinefilm and Standard Definition Television video and audio is essentially described
Mesh.It is the data bank with digital high-definition movie program as core in library of programmes, original cataloguing system is not built to this domain variability
Found corresponding catalogue standard.Accordingly, it would be desirable to the characteristics of being based on library of programmes, is absorbed and is extended to original catalogue standard, should
Meet the new feature of digital high-definition film, original film and TV catalogue standard are inherited again.Specifically, the present embodiment
Cataloguing is designed with following features：
1）Tree-like cataloging structure：Tree-like cataloging structure can support the multi version of movie program, advantageously reduce cost and
Recycle.
2）Correspondence of the film standard to television standard：Film standard has very big difference with television standard on field description,
In order to adapt to two retrieval users in field, movie program storehouse according to circumstances will automatically set up film standard word in cataloguing
Corresponding relation of the section to TV catalogue standard.Whether journalist or film worker can practise according to specialty
Used easy retrieval resource needed for.
3）Expansible Catalogue content：As the development of catalogue standard can extend the cataloguing field of film in stock.
4）Configurable multilayer cataloguing flow：Program layer, video layer are provided（Camera lens, scene, fragment）Multi-level cataloguing.
Above-mentioned catalogue standard and searching system feature：For the requirement of library of programmes, incorporate things of diverse nature, while there is development to create again
Newly, the cross-application of film and TV is met.Ease for use, autgmentability are taken into full account in cataloguing design, is using and rising for future
Level slot milling.Cataloging structure design is detailed, for comprehensive utilization film source material provides technical foundation at many levels.
The detailed step of the present embodiment methods described is as follows, and the flow of methods described is as shown in Figure 2：
1. the step of picture file is gathered：For gathering movie pictures mother matrix, if film mother matrix picture source turns magnetic for glue, sweep
Generation image sequence file is retouched, the lossless compression algorithm used during this, it is ensured that video compress file can be reduced by bit
It is original DPX pictures, if film mother matrix is digital cinema master, directly collection is image sequence file.
Collection includes the acquisition of high definition and SD version and browses version program acquisition.
Current high-definition program source, its resolution ratio is all 1920x1080, and breadth ratio is 16:9（Retain the actual breadth of film
Than）.High definition material application has two, and one is digital movie application, and another is HDTV application, therefore frequency is
24psf and two kinds of 50i.The material of high definition version is obtained, the process being related to is coding.
Gel resin high turns magnetic collection：The HD-SDI vision signals that collection of server is exported by Da Vinci are downloaded in high definition, it is raw
Into the AVI video files of Zaxel nondestructive compression types.Because glue turns magnetic system program source for many right film, therefore collection
Needs are carried out repeatedly, the multiple Lossless Compression video files of generation.
SD version is obtained from the material of high definition version, its processing procedure is related to two aspects, one is that picture reduces, i.e.,
Down conversion, two is coding.The method of down conversion and the follow-up of SD version material are using relevant, it is necessary to reference to follow-up business flow
To design, it is proposed that obtained by the way of hardware down conversion.The resolution ratio of SD material is 720x576, and picture and selecting is 16:9
Breadth ratio（Retain the actual breadth ratio of film）.SD material is applied to Standard Definition Television channel, and frequency should be the 50i of standard.
Material is browsed for retrieving, it should reflect the overall picture of high definition material.And from application requirement for, its point
Resolution can be arbitrary（But meet the requirement of MPEG compressions, i.e. the ratio of width to height is 16 multiple）.Browsing material should be by
It is designed to 16:9 breadth ratio.352x208 resolution ratio is proposed with, its breadth ratio is approximately 16:9.Browsing version material can be with
Obtained from SD version material.2. the step of picture file compresses：For picture file compression subsystem by image sequence file
Transcoding is Lossless Compression video file.The selection of video code model on the one hand depend on for image quality and application will
Ask, on the other hand depending on the limitation of memory capacity, consider the quality and feasibility of existing coding techniques, the system
2K/4K materials and HD video material use Lossless Compression（lossless）Coded format, SD video material use MPEG-2
Coded format；Browse material and be applied to network retrieval, using the Streaming Media WMV forms of main flow.
3. audio files collection side step is rapid：Collection is digitized to the audiotape of film for audio collection subsystem,
Collection generation PCM sample multichannel audio files, this step or with " the step of picture file is gathered " and " picture file pressure
The step of contracting ", is synchronously carried out.
The audio signal in high-definition program source includes uncompressed signal（Most 8 passages）, 5.1 sound channels, stereo, monophone
Road；Main carriers are 8 rail audiotapes or D5 video-tapes.The wav file for all gathering into PCM regardless of signal is preserved.
A. host language audio is obtained：
If host language audio is acquired with video simultaneously, the file of generation is the mixed file of video and audio intertexture, to carry out
Separate storage and manage, it is necessary to carry out video and audio separation.Independent video file is formed after separation（Zaxel files）With audio text
Part（Multiple wav files）, separate storage.
B. multilingual audio is obtained：
Multilingual audio may be international sound（Left and right acoustic channels）, be also likely to be complete 5.1 sound channel；Collection is usually independently to enter
OK, so directly gathering generation wav file by audio workstation.
C. stereo audio is obtained：
Stereo audio needs to be mixed by under host language or multilingual Lossless Compression audio（Down Mix）Obtain, from simple flow
Consider, Down Mix are preferably used software algorithm（Reference《ATSC AC3 standards》①）Directly carry out, audio quality is fully able to
Ensure.
D. Streaming Media is obtained：
SD video carries out streaming media transcoding and obtains WMV files with stereo audio.
4. the synchronous step of sound picture：For picture file and audio files by collection is separated, in sound picture synchronization subsystem
In carry out sound picture synchronization, main method is to browse video and audio on the time line, with image content as object of reference, by sound
Waveform, acoustic playback find audio ＆ video side-play amount in time, cheap amount are adjusted repeatedly so that the picture shape of the mouth as one speaks and sound
Matching is reached, after confirming side-play amount, the synchronized relation of locking sound and video.
5. the step of turning low bit- rate：The Lossless Compression video and audio files of film are read for transcoding cluster subsystem,
Low bit- rate video-voice frequency flow media file, time-code and the Lossless Compression video file of the low bit- rate file are generated according to synchronized relation
Time-code frame frame correspondence.
To make editor's more aspect and saving Internet resources, the present embodiment takes the files in stream media of establishment low bit- rate.
Using the files in stream media of low bit- rate in editing process, after the completion of editor, high definition broadcasting is used, so can effectively saved
Hardware resource about in editing process.
6. the step of cataloguing：For that with reference to low bit- rate video and audio file, Catalog can be carried out to film, including：It is right
The program layer of film is catalogued, and fills in the essential information of film.
Cataloguing is by setting up Metadata objects, film digital resource is organized, arrange and is sufficiently disclosed, and is built
The contact of the object coupled mode between the various format knowledges of vertical film, so that the management of film assets more specification and side
Just.
Low bit- rate audio-visual content is browsed, access point is marked on a player, is gone out a little, be one by content record between out points
Fragment, catalogues fragment, fills in the attribute information of fragment；Or based on low bit- rate mark scene, camera lens, carry out respectively in detail
Cataloguing；Inventory information provides database and is stored using matchmaker.
In general, the scene that one section of video is described independent story unit by some is constituted；One scene is semantic by some
Related camera lens composition；And each camera lens is made up of some continuous frames, it can be represented by one or more key frames.
Text index uses keyword as the pointer for identifying sentence, paragraph, document, equally in Video stream information, closes
Key frame plays the effect similar with keyword.People often identify scene, story contour level semantic primitive with key frame.Compare vertical frame dimension
Level the video elementary cell of some be camera lens, the camera lens in usual video flowing is made up of continuous frame of video in time, its generation
Temporally and spatially continuous action, correspond to the once record start-stop operation of video camera in one scene of table.Camera lens it
Between there may be polytype transient mode, most commonly shear (Cut) shows as the undergoing mutation property between consecutive frame
Camera lens is changed.Additionally, also there are some more complicated transient modes, such as gradual change.
Key frame is extracted in automation：
Typical Key Frame Extraction algorithm can mainly divide following a few classes：
Method based on camera lens：For each camera lens chooses a key frame, for example, the first frame of each camera lens is elected to be key frame,
The operand of this method is small, is very suitable for the camera lens that content activity is small or holding is constant, but for the continuous fortune of video camera
Dynamic camera lens, the key frame that the method is extracted cannot effectively express its main contents.
Method based on content analysis：This method is by analyzing video content (color histogram, movable information) at any time
Between situation of change choose the number of required key frame, and according to certain rule be that camera lens extracts key frame.
Method based on motion analysis：The method finds the part of camera motion most by the calculating to every frame light stream
Dot, corresponding frame will be elected to be key frame, and this selection is based on following observation, is generally meant that when video camera is stopped important
Personage or the presence of event.
Certainly there are other methods, such as, with the method based on lens movable, Unsupervised clustering technology selects to close
Key frame etc..
Shot segmentation：
Camera lens in usual video flowing, is made up of the frame of video of Time Continuous.What it correspond to that video camera once records rises
Stop operation, represent the continuous action temporally and spatially of a scene.There is polytype transient mode between camera lens,
Most commonly " shear ", the camera lens conversion in the mutability of adjacent two interframe generation is shown as.Additionally, it is more multiple also to there are some
Miscellaneous transient mode, such as fades in, fades out.
Shot segmentation method is divided into uncompressed domain and the class of compression domain two.
Uncompressed domain method has poor based on frame（frame difference）Point-to-point compare with 2 kinds of histogram, due to
The frame difference comparison algorithm of point-to-point is excessively sensitive for noise, and most uncompressed domain algorithm is all based on histogrammic at present.Pressure
Contracting domain method is based on the compression basis of video frame images, and the foundation of cutting is the compressed coefficient of video frame images before and after comparing
（Generally DCT coefficient）, when certain condition is met i.e. their cuttings be 2 groups of camera lenses.
Be currently based on uncompressed domain takes out frame software, can simultaneously extract shear frames or gradual change frame in video upload, also may be used
Frame is taken out with the automation for realizing the video format files such as the MPEG2 I frames to having uploaded completion, IBP frames, MPEG4 and DV.Simultaneously
We are seeking extensive technological cooperation, it is also possible to integrated such as VIRAGE and KONAN in the cataloguing and upload system of oneself
Deng the technology of company.
By using the subject classification table of comparisons and rear complaint table, it is possible to achieve the Automatic subject indexing of system or automatic point
Class is indexed.If system employs the above-mentioned keyword extraction based on content（CKM）Technology, then automatic classified Indexing skill
Art can automatically be classified while keyword extraction to catalog record, greatly improve Catalogue Work efficiency.
When object of cataloguing has multi-level structure, we can be retouched according to the characteristics of each level using different
State item（Or attribute）Carry out clear, complete and accurate description and disclose come the content characteristic and form feature to object of cataloguing,
Here it is layering cataloguing.Being layered another layer of meaning catalogued is：Cataloguing object is progressively analyzed and indexed, for difference
The object of type and recycle value is analyzed and indexed according to different level depth.
With regard to video itself, following several levels can be divided into：Complete video, fragment, scene, camera lens, key frame.Pin
To this complicated level of hierarchy structure, if simply using the simple index without level, it will cause description information
It is disorderly and unsystematic.Because the description information to the summary content of whole complete video file will be with the ins and outs to camera lens
Description information is mixed in together.All it is very unfavorable for the angle for either being recycled from cataloguing and retrieval.Such side
Face can cause the reduction of precision ratio in retrieval, and on the other hand can also be buried in largely very valuable scene, camera lens
In complete video file.
Because layering cataloguing mode is more flexible, the cataloguing demand of different levels can be met.On the one hand can be according to each
The professional ability of unit come determine catalogue indexing depth.For the very limited amount of unit of human and material resources, they can only make
The cataloguing of the first level, it is also possible to the need for substantially meeting retrieval.If more abundant strength, it is very careful to carry out
Cataloguing indexing work, improve resource reutilization efficiency, reduce cost of manufacture.On the other hand, can also be according to different
Program category determines different cataloguing indexing depths.For example, may be included in news compare more than with recycle value
Camera lens, camera lens layer can be just deep into when being indexed to news controlling.And the scene of the program of variety class or game class
Camera lens may not have too big value, and the index of complete video layer just can be only carried out in index.This flexible treatment side
Formula, can greatly improve the efficiency of cataloguing, it is to avoid unnecessary work.
In addition, the professional skill difference that the content of different aspects needs in cataloguing is very big, some contents are for example：Topic
Name, languages, responsibility etc. are relatively simple, and some contents are then needed by certain induction and conclusion such as：Brief introduction, descriptor,
Classification etc., also some contents then it is very professional such as：Shoot gimmick etc., for these different levels content cataloguing to cataloguing
Personnel requirement difference it is far-reaching, by using pipeline system program material is carried out procedure catalogue can make full use of it is existing
Resource, improves cataloging efficiency and the quality of data, is a good solution.Using procedure, the cataloguing of stratification has
Standby following characteristics：
Cataloguing object is progressively analyzed and indexed, for different type and recycle value object according to different levels
Depth is analyzed and indexed.
Cataloguing mode is more flexible, can meet the cataloguing demand of different levels.
Cataloging structure and workflow are clear.
Resource utilization is higher, and professional Category-makers ' can only be engaged in high-level Catalogue Work, it is to avoid the wasting of resources.
Data processing is checked on layer by layer, and Catalogue quality is relatively easy to control.
Clearly, work management is more convenient for cataloguing responsibility.
7. the step of storage issue：After the completion of cataloguing, film is storage and externally issues, and is browsed for user search.
The step of augmenting multilingual sound collection：Audiotape for other languages may be after first mother matrix storage
Obtain, each newly-increased languages sound collection is multi-channel sound file by audio collection subsystem.
Embodiment two：
The present embodiment is the improvement of embodiment one, is the refinement of embodiment one.Storage method described in the present embodiment also includes：
The step of augmenting multilingual sound collection：For audio collection subsystem by each newly-increased languages sound collection be many sound
Road audio files.One film often translates into multilingual, and the spectators for different mother tongues appreciate, therefore, a film has
Multilingual version, gathers different language version, is made as the audio files storage of different language.
The synchronous step of multilingual sound picture：Low bit-rate video for using mother matrix in storehouse is object of reference, in sound picture synchronization
The time-code that newly-increased languages sound is found in system is cheaply measured, the cheap amount of adjustment so that the picture shape of the mouth as one speaks is reached with sound and matched, and locks
Surely the synchronized relation of languages sound and picture is increased newly.
As obtained the relevant information from film production management system, filling film production task information etc.；Complete every portion
The synchronization of film 50i versions HD video and SD video material and SD video and stereo audio material, completes every shadow
The synchronization of piece 24psf versions HD video and audio material, while generating synchronizing information.
The step of addendum file is put in storage：For the audio files of each languages augmented to be entered into matchmaker's money database purchase.Enter matchmaker
After money database, the file of every film storage is respectively high-resolution Lossless Compression video file, a multilingual sound
Between file, multi-channel sound file, spolen title file, a low bit- rate video and audio file of multiple languages, these files
It is that frame frame is corresponding on time-code.
Embodiment three：
The present embodiment is the improvement of above-described embodiment, is the refinement of above-described embodiment.Storage method described in the present embodiment is also wrapped
Include：
The step of making spolen title：Low bit- rate video and audio for using mother matrix in storehouse is object of reference, in subtitle making system
In, video and audio is played back, and spolen title is made according to picture, sound sentence by sentence, form the spolen title file with time-code information.
To save memory capacity and adapting to the demand of DVB, film digital program platform and AMS will be to films
Spolen title stored.
Caption content will be obtained from studio, be changed by form, be allowed to be changed into the high definition that non-linear equipment can be recognized
Standard spolen title file, the subtitle file will be preserved with Unicode format, so that font is changed and is replaced.
Script holder's captions of film be usually using film size as standard, and nonlinear captions be using timing code as
Standard, row format conversion is entered between the two.Therefore dialogue content is not only contained in subtitle file, also can be containing converted next
High definition time-code information, can be corresponding with video and audio realization of material frame frame.
The step of addendum file is put in storage：For the spolen title file of each languages augmented to be entered into matchmaker money data stock respectively
Storage；After entering matchmaker's money database, the file of every film storage is respectively a high-resolution Lossless Compression video file, multi-lingual
Plant audio files, multi-channel sound file, spolen title file, a low bit- rate video and audio file of multiple languages, these texts
On time-code it is that frame frame is corresponding between part.
The data object stored in film digital program storage also includes in addition to the media class data object such as video and audio, captions
Index information for illustrating and describing these data（Metadata）.Index class data object is mainly the index of metadata of material
Information, which part information is generated in media class data object and set up simultaneously, and remaining most information needs to be entered by Category-makers '
Row supplement.
Example IV：
The present embodiment is a kind of extracting method of the film digital program for extracting above-mentioned storage file, and what methods described was used is
System includes：Retrieval subsystem, browse subsystem, lower subsystems, transcoding synthesis subsystem, output end, as shown in Figure 3.
Retrieval subsystem：It by providing retrieval method as much as possible and retrieval mode is use that the purpose of retrieval subsystem is
Family provides retrieval service, such as parameter retrieval, full-text search, systematic searching, image retrieval etc..Parameter retrieval is exactly that we are usual
The keyword retrieval of described specified range, such as：Title Searching, date retrieval, column retrieval etc..Inspection is then indifferent in full-text search
Rope scope, keyword retrieval is carried out generally be directed to all of text information, and this technology is used very simply, in interconnection
What is used on the net is the most universal.Systematic searching is actually one kind of parameter retrieval, by using the classification system structure of standard,
Conveniently can accurately carry out data-searching.Image retrieval belongs to the technology in more forward position, and more conventional mode is root at present
According to the texture of image, the feature such as tone carries out image retrieval, and CBIR technology is not yet ripe at present.
For full-text search mode, if adding the new Chinese aptitude search enging, it is capable of achieving to include Chinese by glossarial index, word rope
The intelligent retrieval based on linguistic knowledges such as semantic dictionaries drawn, in view of system initial stage business is less, using database in itself first
Own full-text search function.
Browse subsystem：Material is browsed for retrieving, it should reflect the overall picture of high definition material.And from application requirement
For upper, its resolution ratio can be arbitrary（But meet the requirement of MPEG compressions, i.e. the ratio of width to height is 16 multiple）.Browse
Material should be designed to 16:9 breadth ratio.352x208 resolution ratio is proposed with, its breadth ratio is approximately 16:9.Browse version
This material can be obtained from SD version material.
Lower subsystems：The content of download includes：File download and high definition film are downloaded.
File download：The material such as high standard definition video, audio, captions is situated between with document form output to various storages in library of programmes
In matter.Current period completes digital movie material, high definition material, the file download of SD material, and 2K/4K file downloads next phase is complete
Into.
High definition film is downloaded：In high definition download server output HD-SDI video/audio signals be recorded to HD-D5 or
HDCAM-SR.
Film is downloaded needs video and audio, subtitle superposition to export, because high definition film material uses Lossless Compression
（Lossless）Coding, carrying out this superposition not only needs powerful computing capability, also occupies many bandwidth resources.This reality
Apply example and solve the problems, such as that captions version film is downloaded using two methods：
The captions distribution synthetic method on backstage, this method uses background processing mode, transparent for user, and what is obtained is
It is final to download the file for needing.Have the disadvantage to need certain stand-by period before downloading.
High definition film titler synchronization stacking method, this method advantage is exactly without waiting for directly downloading, but to need to downloading
System is simply provided, it is ensured that film titler linkage output.
Transcoding synthesizes subsystem：In film digital program platform and AMS, video and audio media need difference
Form supports that such as material preserves and recycle the support for needing high-quality video encoding form, and editing saving then needs respectively
Plant SD video encoding to support, browsed for the ease of retrieval and Internet video and audios, then need Streaming Media to support.For not
The platform value-added service of disconnected extension, it is also desirable to the material of corresponding format is obtained from material database, to meet different application environment
Need.
The demand of various video and audio forms that reply is continually changing, will be relatively more suitable using pure software transcoding and synthesis system
Close.High definition, the conversion of SD material format of whole library of programmes are processed, outstanding encoding and decoding algorithm, hardware environment is not only needed
Seem critically important, the CPU operands of the bigger needs of code check are bigger, if relying only on single device carries out high definition transcoding and synthesis, effect
Rate will be very low.Therefore, the present embodiment employs the mode of many transcodings and synthesis server distributed arithmetic, makes high definition transcoding
And the concept feasible of synthesis.
The task of transcoding and synthesis system carries out United Dispatching by Manager, distributes to transcoding and the synthesis of free time
Server, numerous transcodings and synthesis server constitute a cluster, by Distributed Calculation, can complete same jointly
Transcoding or synthesis task；Manager carrys out the task of dynamic adaptation segmentation by monitoring the state of transcoding and synthesis server, with
System operations resource is set to maximize the use.
Originally huge high resolution video and audio data volume can be made to be divided treatment in this way, by cooperating,
Accelerate the process of transcoding and synthesis.So with cheap PC Server composition transcodings and synthesis cluster, it is possible to complete costliness
The just treatable work of UNIX minicomputers.
In addition, transcoding and synthesis subsystem use exploitation formula architecture design, system to support the standardization exchange lattice such as XML, MXF
Formula, makes it not only can apply to film digital program platform interior, be even more whole film digital program platform to outside extension industry
The important interface of business, various outer application systems easily can carry out program friendship by transcoding and synthesis system with library of programmes
Change.
Transcoding synthon system features：Modular system interface is set up, realizes that multisystem is interconnected；Server background works, collection
Group's distributed treatment, automatically dynamic adaptation task, inexpensive, high efficiency；Pure software processes, upgrading prospects are good, at any time can be with
More new algorithm, and need not increase extra equipment when increasing function.
Output end：
The present embodiment methods described（Flow is as shown in Figure 4）, comprise the following specific steps that：
1. the step of retrieving film：For retrieval subsystem in full, by way of keyword in matchmaker provides database to film
Retrieved, retrieval result will list all motion pictures.
Retrieval is the recycling that film digital resource in film digital program storage is realized by retrieval and inquisition, and it is in application
On be not independent, but closely fusion is in subsystems, there is provided convenient resource retrieval is called.
2. the step of browsing substance film：For entering film details, the detailed inventory information of film is checked, while playing clear
Look at the low bit- rate audio-visual content of film.
3. the step of submitting download request to：Film mother matrix is browsed for what is chosen, application is downloaded；Selected during download：
Film video and audio file, certain languages audio file, certain languages subtitle file, and set the form of downloading object file.
Video format may be selected：4K, 2K, HD, SD or other low bit- rate forms.
Entire chapter is downloaded or selection is downloaded：Selection entire chapter is downloaded and then downloads complete film, selection download then choose fragment or
Scene or camera lens are downloaded.When film downloads application, certain fragment, scene or camera lens can be also chosen, application is downloaded, and backstage turns
Code group system will synthesize the audio-visual content of the part according to out points information, generate target film file.
4. transcoding synthesis step：For transcoding subsystem according to download request, read video and audio, audio, subtitle file with
And time-code relation, transcoding synthesis is carried out, film format file set in advance is generated, and export by output end.
5. the step of exporting：Film format file for that will synthesize is exported by output end.
Finally it should be noted that being merely illustrative of the technical solution of the present invention and unrestricted above, although with reference to preferable cloth
Scheme is put to be described in detail the present invention, it will be understood by those within the art that, can be to technology of the invention
Scheme（The composition of such as system, sequencing of step etc.）Modify or equivalent, without deviating from the technology of the present invention
The spirit and scope of scheme.
Claims (4)
1. a kind of storage method of film digital program, the system that methods described is used includes：Picture file compression subsystem,
Audio collection subsystem, sound picture synchronization subsystem, low bit- rate transcoding subsystem, Catalogue, matchmaker's money database, multilingual
Acquisition subsystem, spolen title make subsystem, it is characterised in that as follows the step of methods described：
The step of picture file is gathered：For gathering movie pictures mother matrix, if film mother matrix picture source turns magnetic for glue, scan
Generation image sequence file, if film mother matrix is digital cinema master, directly collection is image sequence file；
The step of picture file compresses：For picture file compression subsystem by image sequence file transcoding be Lossless Compression video
File；
The step of audio files is gathered：Collection, collection life are digitized to the audiotape of film for audio collection subsystem
Into the audio files of the multichannel of PCM sample, this step or with " the step of picture file is gathered " and " picture file compress step
Suddenly it is " synchronous to carry out；
The synchronous step of sound picture：For picture file and audio files by collection is separated, carried out in sound picture synchronization subsystem
Sound picture synchronization, main method is to browse video and audio on the time line, with image content as object of reference, by sound waveform,
Acoustic playback finds audio ＆ video side-play amount in time, cheap amount is adjusted repeatedly so that the picture shape of the mouth as one speaks is reached with sound
Matching, after confirming side-play amount, the synchronized relation of locking sound and video；
The step of turning low bit- rate：The Lossless Compression video and audio files of film are read for transcoding cluster subsystem, according to same
Step relation generates low bit- rate video-voice frequency flow media file, the time-code of the low bit- rate file and the time-code frame of Lossless Compression video file
Frame correspondence；
The step of cataloguing：For that with reference to low bit- rate video and audio file, Catalog can be carried out to film, including：
Program layer to film is catalogued, and fills in the essential information of film；
Low bit- rate audio-visual content is browsed, access point is marked on a player, is gone out a little, be a piece by content record between out points
Section, catalogues fragment, fills in the attribute information of fragment；Or based on low bit- rate mark scene, camera lens, compiled in detail respectively
Mesh；Inventory information provides database and is stored using matchmaker；
The step of storage issue：After the completion of cataloguing, film is into matchmaker's money database and externally issues, clear for user search
Look at.
2. storage method according to claim 1, it is characterised in that described storage method also includes：
The step of augmenting multilingual sound collection：For audio collection subsystem by each newly-increased languages sound collection be many sound
Road audio files；
The synchronous step of multilingual sound picture：Low bit-rate video for using mother matrix in storehouse is object of reference, in sound picture synchronization system
The middle time-code for finding newly-increased languages sound is cheaply measured, the cheap amount of adjustment so that the picture shape of the mouth as one speaks is reached with sound and matched, and is locked new
Increase the synchronized relation of languages sound and picture；
The step of addendum file is put in storage：For the audio files of each languages augmented to be entered into matchmaker's money database purchase；Enter matchmaker's money number
Behind storehouse, the file of every film storage be respectively a high-resolution Lossless Compression video file, multilingual audio files,
Between spolen title file, a low bit- rate video and audio file of multi-channel sound file, multiple languages, these files on time-code
It is that frame frame is corresponding.
3. storage method according to claim 1 and 2, it is characterised in that described storage method also includes：
The step of making spolen title：Low bit- rate video and audio for using mother matrix in storehouse is object of reference, in subtitle making system
In, video and audio is played back, and spolen title is made according to picture, sound sentence by sentence, form the spolen title file with time-code information；
The step of addendum file is put in storage：For the spolen title file of each languages augmented to be entered into matchmaker's money database purchase respectively；
After entering matchmaker's money database, the file of every film storage is respectively a high-resolution Lossless Compression video file, multilingual
Audio files, multi-channel sound file, spolen title file, a low bit- rate video and audio file, these files of multiple languages
Between on time-code be that frame frame is corresponding.
4. it is a kind of extract claim 1 described in storage file film digital program extracting method, what methods described was used
System includes：Retrieval subsystem, browse subsystem, lower subsystems, transcoding synthesis subsystem, output end, choose subsystem, its
It is characterised by, methods described comprises the following steps：
The step of retrieval film：To film in for providing database in matchmaker by way of full text, keyword in retrieval subsystem
Retrieved, retrieval result will list all motion pictures；
The step of browsing substance film：For entering film details, the detailed inventory information of film is checked, while broadcasting browses film
Low bit- rate audio-visual content；
The step of submitting download request to：Film mother matrix is browsed for what is chosen, application is downloaded；Selected during download：
Film video and audio file, certain languages audio file, certain languages subtitle file, and set the form of downloading object file；
Video format may be selected：4K, 2K, HD, SD or other low bit- rate forms；
Entire chapter is downloaded or selection is downloaded：Selection entire chapter is downloaded and then downloads complete film, and selection is downloaded and then chooses fragment or scene
Or camera lens is downloaded；
The step of transcoding synthesizes：For transcoding subsystem according to download request, video and audio, audio, subtitle file are read with timely
Code relation, carries out transcoding synthesis, generates film format file set in advance；
The step of output：Film format file for that will synthesize is exported by output end.
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