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CN110166652A - Multi-track audio-visual synchronization edit methods - Google Patents

Multi-track audio-visual synchronization edit methods Download PDF

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Publication number
CN110166652A
CN110166652A CN201910452574.5A CN201910452574A CN110166652A CN 110166652 A CN110166652 A CN 110166652A CN 201910452574 A CN201910452574 A CN 201910452574A CN 110166652 A CN110166652 A CN 110166652A
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CN
China
Prior art keywords
audio
video
time point
recorded file
default
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910452574.5A
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Chinese (zh)
Inventor
陈挚
黄启挺
罗辉
刘鑫
庞炜
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Chengdu Energy Polytron Technologies Inc
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Chengdu Energy Polytron Technologies Inc
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Priority to CN201910452574.5A priority Critical patent/CN110166652A/en
Publication of CN110166652A publication Critical patent/CN110166652A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302Content synchronisation processes, e.g. decoder synchronisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845Structuring of content, e.g. decomposing content into time segments
    • H04N21/8456Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment
    • H04N5/262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

The present invention relates to audio-video editor fields, aiming at the problem that existing audio-video editing low efficiency, propose a kind of multi-track audio-visual synchronization edit methods, comprising: load each audio-video recorded file of synchronous recording on each audio-video editing rail of unified time axis;Time point on the time shaft that user selects is set to mark time point, audio-video recorded file corresponding on each audio-video editing rail is carried out by unified be segmented according to label time point and obtains audio-video segment;Unified editor is carried out to audio-video recorded file according to the edit object of user's selection and edit, so that at most in the presence of audio all the way as activation audio and correspondingly at most in the presence of video all the way as activation video in any time period on audio-video editing rail, by the activation audio of each period and activation video, respectively successively splicing obtains achievement audio and achievement video in chronological order, synthesizes achievement audio and achievement video.The present invention is suitable for the manual editing of instructional video.

Description

Multi-track audio-visual synchronization edit methods
Technical field
The present invention relates to audio-video editor field, in particular to a kind of multi-track audio-visual synchronization edit methods.
Background technique
In teacher's before the class or after class recorded video, generallys use only record a screen at present, Outcome Document is screen video File only shows content to be expressed by the operation to screen in the process, needs auxiliary camera to intervene in the process When generally use third party software and recall camera face is shown on the screen, and there is also multiple confirmations when multiple cameras Process, switching camera is also inconvenient, and can't individually record camera at this time;Or camera is only recorded, in process In want show screen content, method easier at this time be exactly pass through camera photographed screen and need manually adjust, but The screen clapped at this time can have several situations and for example deform, partial enlargement and peripheral screen edge, so that showing in entire video It is extremely uncoordinated, it can only be handled by deleting mode in later stage compilation after the completion of recording, need finer processing often It needs to install bigger software to be further processed, causes the post-processing time very long.Want to reach better exhibition in recorded video Show effect, needs to look for the team of profession, shot simultaneously using multiple cameras, it is multiple to handle that the later period expends bigger energy The scene switching of camera, linking of content etc., the period is long, and more financial supports are also needed while time-consuming, this Kind of mode cannot normalization offer.
It is existing during the program making of multiple-camera seat in the plane, it is necessary first to multiple cameras output vision signal Be acquired, while being also required to be acquired the timing code (Time Code, TC) of vision signal, and by vision signal and when Between code be written in computer together, form the program material that uses for later stage compilation.In the later stage compilation of program, from same The material of multiple seats in the plane of scene, needs to keep original relative time relationship in different track of video, therefore, it is necessary to adopt With certain simultaneous techniques, for example some specific video frame is chosen as time reference, or in the same of acquisition vision signal When, acquire synchronous timing code etc..The achievement that conventional audio-video multichannel is recorded is to select to show by cut bank or save Video clip files, need specialized hardware to support, it is at high cost, it is complicated for operation.Multiple video clippings after the completion of recording must incite somebody to action The video distribution of recording is on each track, and then track carries out edit operation one by one, and working efficiency is lower, more in editing process Channel audio-visual synchronization is poor, and work is complicated.
Summary of the invention
The technical problems to be solved by the present invention are: to solve the process for carrying out editing to the audio-video document of multiplexer channel In, need on each track to be edited the publication of the audio-video document of multiplexer channel one by one and caused by it is ineffective Problem proposes a kind of multi-track audio-visual synchronization edit methods.
The present invention solves above-mentioned technical problem, the technical solution adopted is that:
Multi-track audio-visual synchronization edit methods, comprising the following steps:
S1, the consistent each audio-video recorded file of the duration of synchronous recording is corresponded into load in unified time axis On each audio-video editing rail, the audio-video recorded file includes at least default audio recorded file and default video is recorded File;
The time point on time shaft that S2, setting user select to mark time point, obtains according to the label time point Audio-video recorded file corresponding on each audio-video editing rail simultaneously is carried out unifying to be segmented obtaining sound view by the period of segmentation Frequency segment;
S3, the edit object selected according to user and edit are to the audio-video recorded file on audio-video editing rail Unified editor is carried out, so that at most there is audio all the way on audio-video editing rail in any time period is used as activation audio and one One corresponding most is used as in the presence of video all the way activates video, and the edit object includes audio-video segment and label time point;
S4, by the activation audio of each period and activation video respectively in chronological order successively splicing respectively obtain achievement sound Frequency and achievement video, synthesize the achievement audio and achievement video obtains editor's Outcome Document.
Further, include: before the step S1
S0, at least default audio channel and all the way default video channel synchronizes audio-video collection all the way, obtain with Acquisition channel corresponds and records the consistent at least two audio-videos recorded file of duration, and described two audio-videos record text Part is respectively default audio recorded file and default video recorded file.
Preferably, the step S0 includes:
S001, the connection state information for reading audio-video acquisition equipment on each paths;
S002, simultaneously to the audio-video acquisition equipment of each paths issue record command, the audio-video collection of each paths Equipment starts simultaneously at recording and creates corresponding audio-video recorded file;
S003, simultaneously to the audio-video acquisition equipment of each paths issue halt instruction, the audio-video collection of each paths Equipment is simultaneously stopped the corresponding audio-video recorded file of Record and Save.
It further, include: number according to audio-video acquisition equipment, audio-video acquisition equipment after the step S003 Type and record duration generate an acquisition script file;
The step S1 includes:
According to the time shaft on the recording duration rendering audio-video editing rail in acquisition script file, regarded according to the sound The number and type of frequency acquisition equipment render audio-video editing rail.
Preferably, the step S2 includes:
The number for remembering the label time point is k, and when k is 1, label time point is denoted as t1, as k >=2, mark the time Point is denoted as t according to the sequencing of time respectively1~tk, will be corresponding on each audio-video editing rail according to label time point Audio-video recorded file is all divided into k+1 sections and obtains k+1 sections of audio-video segments, then i-th section of sound on any audio-video editing rail Video clip is t in corresponding audio-video recorded file on the audio-video editing raili~ti+1The audio-video of period, wherein 0≤i≤k, t0For the start time point of audio-video recorded file;tk+1For the termination time point of audio-video recorded file.
Preferably, the step S3 includes: to record the edit object of user's selection and edit to editor's achievement text Part;
The step S4 includes: according to edited Outcome Document that the activation audio of each period and activation video pictures is each From successively splicing respectively obtains achievement audio and achievement video in chronological order.
Preferably, the audio-video segment includes audio fragment and video clip, and the edit includes switching, described Edit object includes audio-video segment, and the step S3 includes:
The audio-video recorded file further includes that at least non-default video record file, activation video default use silent all the way Recognize the video in video record file, according to the handover operation of user, the video clip that user is currently selected as to it is corresponding when Between section activation video;
And/or the audio-video recorded file further includes that at least non-default audio recording file, activation audio are defaulted all the way Using the audio in default audio recorded file, according to the handover operation of user, the audio fragment that user is currently selected as The activation audio of corresponding period.
Preferably, the edit includes deleting, and the edit object includes audio-video segment, the step S3 packet It includes:
According to the delete operation of user, the audio-video segment that user currently selects is corresponded to each audio-video in the period Audio-video segment on editing rail is deleted.
Preferably, the audio-video segment includes audio fragment and video clip, and the edit includes insertion, described Edit object includes label time point, and the step S3 includes;
The label time point that note user currently selects to be inserted into time point, according to the insertion operation of user, remembers that user needs A length of insertion duration when fixing for the picture that the duration of the audio-video of insertion or user need to be inserted into, by each audio-video editor rail Audio-video segment on road after the insertion time point uniformly moves back the insertion duration;
When the audio-video that the needs are inserted into includes the consistent video pictures of duration and audio, text is recorded in default video The video pictures are inserted at insertion time point on the corresponding audio-video editing rail of part, it is corresponding in default audio recorded file Audio-video editing rail on insertion time point at the insertion audio;
Or, when the audio-video that the needs are inserted into only includes video pictures, in the corresponding sound of default video recorded file It is inserted into the video pictures at insertion time point on video editing track, the corresponding audio-video of default audio recorded file is compiled Be inserted on volume track the audio being inserted into duration after time point be disposed as it is mute;
Or, when the audio-video that the needs are inserted into only includes picture, in the corresponding audio-video of default video recorded file The picture is inserted at insertion time point on editing rail, it will be on the corresponding audio-video editing rail of default audio recorded file The audio being inserted into duration after insertion time point is disposed as mute.
The beneficial effects of the present invention are:
1) multiple audio-video recorded files are synchronized and is loaded on audio-video editing rail and carries out according to the demand of user Unified segmentation, the audio-video recorded file on edit object and each track of edit simultaneously operating selected according to user, The picture for showing the audio-video segment on some track can be arbitrarily designated as activation video, solve traditional edit scenario needs The audio-video picture in each channel of Manual synchronization causes ineffective problem with linking, while also solving traditional editor In the process, need to adjust the show levels relationship of each track and caused by editing low efficiency the problem of.
2) multi-channel synchronous recording technology is used, the audio-video acquisition equipment in each channel is kept into synchronous recording and is saved At the independent audio-video recorded file of correspondence, the integrality of the audio-video recorded file in each channel, consistency and same ensure that Step property avoids multiple audio-video acquisition equipment asynchronous collecting audio-videos and causes the problem of postorder editor difficulty.
Detailed description of the invention
Fig. 1 is the method flow diagram of the embodiment of the present invention;
Fig. 2 is the schematic diagram of the multi-channel sound audio video synchronization method for recording of the embodiment of the present invention;
Fig. 3 is that the multi-channel sound audio video synchronization of the embodiment of the present invention records the schematic diagram of result;
Fig. 4 is the synchronous recording of the embodiment of the present invention and the schematic diagram of synchro edit;
Fig. 5 is the schematic diagram that the multi-track audio-visual synchronization of the embodiment of the present invention switches;
Fig. 6 is the schematic diagram that the multi-track audio-visual synchronization of the embodiment of the present invention is deleted;
Fig. 7 is the schematic diagram that the multi-track audio-visual synchronization of the embodiment of the present invention is inserted into.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, it below in conjunction with attached drawing and is implemented as follows The present invention will be described in further detail for example.
As shown in Figure 1, multi-track audio-visual synchronization edit methods, comprising the following steps:
S1, the consistent each audio-video recorded file of the duration of synchronous recording is corresponded into load in unified time axis On each audio-video editing rail, the audio-video recorded file includes at least default audio recorded file and default video is recorded File.
Wherein, for teaching application environment, under normal circumstances, the source of default audio recorded file be can be directly The sound of entire teaching environment is enrolled, the source of default channel video record file can be the screen video of teaching screen, can What it is with understanding be above-mentioned video only includes video pictures.
The time point on time shaft that S2, setting user select to mark time point, obtains according to the label time point Audio-video recorded file corresponding on each audio-video editing rail simultaneously is carried out unifying to be segmented obtaining sound view by the period of segmentation Frequency segment;
Wherein, marking the selection at time point can be configured using the clicking operation of user, and user is according to the actual situation It is welcome specified using some time point on time shaft as the cut-point of period i.e. label time point.
S3, the edit object selected according to user and edit are to the audio-video recorded file on audio-video editing rail Unified editor is carried out, so that at most there is audio all the way on audio-video editing rail in any time period is used as activation audio and one One corresponding most is used as in the presence of video all the way activates video;The edit object includes audio-video segment and label time point;
Wherein, edit may include switching, insertion and delete.
S4, by the activation audio of each period and activation video respectively in chronological order successively splicing respectively obtain achievement sound Frequency and achievement video, synthesize the achievement audio and achievement video obtains editor's Outcome Document.
Wherein, as a further preference, synthesize achievement audio and achievement video obtain editor's Outcome Document may include as Lower operation: achievement audio, coding achievement video after optimization achievement audio, code optimization, the achievement after finally remerging coding Audio and achievement video obtain editor's Outcome Document.
Label time point that each audio-video channel picture for recording acquisition is synchronized, in simultaneously operating time slice All channels, and interior over any time period some PASS VIDEO can be specified as activation video, this is simple and efficient to handle, is able to maintain The synchronism in each channel solves traditional multi-track editing technique and needs between each track audio-video recorded file of manual setting The problems such as synchronous and adjustment display track linking and track level block, efficiently avoids the audio-video recorded file of multi-track Nonsynchronous problem.Further, the audio-video being arbitrarily designated show on some channel can be passed through in recording process in computer It is shown on screen, is effectively prevented from the simple function that traditional recording system can only be recorded or can only be shown, provide one for user The synchronous application service shown and record of kind, designs reasonable strong operability.
As shown in Figure 1, may also include that before step S1
S0, at least default audio channel and all the way default video channel synchronizes audio-video collection all the way, obtain with Acquisition channel corresponds and records the consistent at least two audio-videos recorded file of duration, and described two audio-videos record text Part is respectively default audio recorded file and default video recorded file.
It is carried out specifically, one or more audio-video acquisition equipments with recording audio or recorded video function can be used Acquisition, audio-video acquisition equipment includes high photographing instrument, video camera and recorder.
As shown in Fig. 2, step S0 can include:
S001, the connection state information for reading audio-video acquisition equipment on each paths;
S002, simultaneously to the audio-video acquisition equipment of each paths issue record command, the audio-video collection of each paths Equipment starts simultaneously at recording and creates corresponding audio-video recorded file;
S003, simultaneously to the audio-video acquisition equipment of each paths issue halt instruction, the audio-video collection of each paths Equipment is simultaneously stopped the corresponding audio-video recorded file of Record and Save.
As shown in figure 3, recording the displaying of result as multi-channel sound audio video synchronization a kind of under practical application scene, wherein Audio-video recorded file may include audio files as default audio recorded file, screen video and record text as default video Part, video file 1 and video file 2, it can be seen that each audio-video recorded file duration is consistent mutually indepedent and synchronous.
Further, it may include that the operation recorded is recorded and continued in pause in recording process, refer to when receiving pause and recording When enabling, the synchronous recording state value for changing all audio-video collection channels is pause, and the audio-video acquisition equipment of each paths is real When judge the recording state value, if recording state value is pause, then suspends and record all audio-video;Continue to record when receiving When system instruction, the synchronous recording state for changing all audio-video collection channels is to continue, the audio-video acquisition equipment of each paths Recording state value described in real-time judge then continues to record all audio-videos if recording state value is to continue.
The related audio/video information that load needs can be deposited in an acquisition script file by subsequent load for convenience In, that is to say, that after step S003 can include: according to the number of audio-video acquisition equipment, the type of audio-video acquisition equipment And it records duration and generates an acquisition script file;The step S1 includes: according to the recording duration in acquisition script file The time shaft on audio-video editing rail is rendered, audio-video editor is rendered according to the number of the audio-video acquisition equipment and type Track.
In view of the synchronism and convenience of segmentation, above-mentioned steps S2 can include: remember that the number for marking time point is K, when k is 1, label time point is denoted as t1, as k >=2, time point is marked to be denoted as t respectively according to the sequencing of time1~ tk, audio-video recorded file corresponding on each audio-video editing rail is divided into k+1 sections according to label time point and obtains k+1 Section audio-video segment, then i-th section of audio-video segment on any audio-video editing rail is corresponding on the audio-video editing rail Audio-video recorded file in ti~ti+1The audio-video of period, wherein 0≤i≤k, t0For the starting of audio-video recorded file Time point;tk+1For the termination time point of audio-video recorded file.It can be seen that the period of the segmentation on any audio-video editing rail It also is k+1 sections, as shown in figure 4, the figure shows the schematic diagrames of complete synchronous recording and synchro edit.
In order to which edit can realize revocation previous action and repeat the function of previous action, the step S3 packet It includes: the edit object of user's selection and edit is recorded to editor's Outcome Document;The step S4 includes: according to being edited Outcome Document respectively successively splices the activation audio of each period and activation video pictures in chronological order respectively obtains achievement Audio and achievement video.
Above-mentioned audio-video segment includes audio fragment and video clip, when edit includes switching, edit object packet Audio-video segment is included, step S3 includes:
Audio-video recorded file further includes that at least non-default video record file, activation video default are regarded using default all the way Video in frequency recorded file, according to the handover operation of user, the video clip that user is currently selected is as the corresponding period Activation video;
And/or audio-video recorded file further includes that at least non-default audio recording file, activation audio default use all the way Audio in default audio recorded file, according to the handover operation of user, the audio fragment that user is currently selected is as correspondence The activation audio of period.
As a kind of citing of above-mentioned switching edit, as shown in figure 5, audio-video recorded file shares 4, respectively Video file 1, video file N, audio files and screen video, wherein audio files is as default audio recorded file, screen Video is as default video recorded file;Four label time points, respectively t of user setting1~tn, by all audio-videos Recorded file has all been divided into 5 sections, and user has chosen the t of video file N0~t1The video of section does handover operation, has chosen video text The t of part 11~t2The video of section does handover operation, has chosen the t of video file N3~t4The video of section does handover operation, has chosen The t of video file 14~t5The video of section does handover operation, it is to be understood that when can be selection while switching over, It is also possible to individually carry out a step handover operation after having chosen again.So activation video includes t0~t1The video text of period Part N, t1~t2The video file 1, t of period2~t3The screen video of period, t3~t4The video file N, t of period4~ t5The video file 1 of period, achievement video are successively spliced in chronological order by above-mentioned activation video, activate audio and at Fruit audio is still t0~t5Audio in the audio file of section.By specifying one in multiple video clips in the same period Section is activation video, solve the problems, such as the show levels relationship for needing to adjust each track and caused by editing low efficiency, cut Collect high-efficient, editing quality height.
Edit object includes audio-video segment, when edit is to delete, step S3 can include:
According to the delete operation of user, the audio-video segment that user currently selects is corresponded to each audio-video in the period Audio-video segment on editing rail is deleted.
As a kind of citing of above-mentioned deletion edit, as shown in fig. 6, audio-video recorded file shares 4, respectively Video file 1, video file N, audio files and screen video, wherein audio files is as default audio recorded file, screen Video is as default video recorded file;All audio-video documents have all been divided into 4 using three label time points by user Section selects t1~t2Any audio-video document of period carries out delete operation, then the content for corresponding to dash area is all deleted, All audio-video documents after t2 time point, which can move forward, docks corresponding t0~t1The audio-video document of period.By to choosing The audio-video segment on all tracks in period synchronizes deletion, and deleted audio-video will be on all tracks The subsequent audio-video segment of segment synchronizes forward movement, solves traditional edit scenario and needs each channel of Manual synchronization Audio-video picture causes ineffective problem with linking, improves editing efficiency.
Above-mentioned audio-video segment includes audio fragment and video clip, and edit object includes label time point, when editor's hand When section includes insertion, step S3 includes;
The label time point that note user currently selects to be inserted into time point, according to the insertion operation of user, remembers that user needs A length of insertion duration when fixing for the picture that the duration of the audio-video of insertion or user need to be inserted into, by each audio-video editor rail Audio-video segment after being inserted into time point on road uniformly moves back insertion duration;It is understood that when insert pictures, when fixing The display duration of a length of picture.
When needing the audio-video being inserted into includes the consistent video pictures of duration and audio, in default video recorded file pair Video pictures are inserted at the insertion time point on audio-video editing rail answered, in the corresponding audio-video of default audio recorded file Audio is inserted at insertion time point on editing rail;
Or, when needing the audio-video being inserted into only includes video pictures, in the corresponding audio-video of default video recorded file Video pictures are inserted at insertion time point on editing rail, it will be on the corresponding audio-video editing rail of default audio recorded file The audio being inserted into duration after insertion time point is disposed as mute;
Or, when needing the audio-video being inserted into only includes picture, in the corresponding audio-video editor of default video recorded file Insert pictures at insertion time point on track will be inserted into the time on the corresponding audio-video editing rail of default audio recorded file The audio being inserted into duration after point is disposed as mute.
As a kind of citing of above-mentioned inserting edition means, as shown in fig. 7, audio-video recorded file shares 4, respectively Video file 1, video file N, audio files and screen video, wherein audio files is as default audio recorded file, screen Video is as default video recorded file;It was insertion time point at 57 seconds that user, which chooses in figure 11 points, by each audio-video editor Audio-video segment after being inserted into time point on track uniformly moves back insertion duration, 40 seconds a length of when being inserted into the present embodiment;Insertion One 40 seconds audio-video, the audio-video include video pictures and audio, are compiled in the corresponding audio-video of default video recorded file It collects and is inserted into video pictures at the insertion time point on track, on the corresponding audio-video editing rail of default audio recorded file It is inserted at time point and is inserted into audio;That is the audio-video being inserted into is in 11 points of dash areas in 37 seconds 57 seconds to 12 points Hold.By the way that the audio-video segment on all audio-video editing rails after same period interpolation angle of incidence point is synchronized It moves backward, and the segment being inserted is inserted in the front side for all audio-video segments being pulled back, solve traditional editor Scheme needs the audio-video picture in each channel of Manual synchronization and is connected and causes ineffective problem, improves editing effect Rate.

Claims (9)

1. multi-track audio-visual synchronization edit methods, which comprises the following steps:
S1, the consistent each audio-video recorded file of the duration of synchronous recording is corresponded into load in each of unified time axis On audio-video editing rail, the audio-video recorded file includes at least default audio recorded file and default video records text Part;
The time point on time shaft that S2, setting user select to mark time point, is segmented according to the label time point Period and audio-video recorded file corresponding on each audio-video editing rail be subjected to unified be segmented obtain audio-video piece Section;
S3, the audio-video recorded file on audio-video editing rail is carried out according to the edit object and edit of user's selection Unified editor, so that at most existing in any time period on audio-video editing rail, audio is used as activation audio all the way and one is a pair of Most be used as in the presence of video all the way answered activates video, and the edit object includes audio-video segment and label time point;
S4, by the activation audio of each period and activation video respectively in chronological order successively splicing respectively obtain achievement audio and Achievement video, synthesizes the achievement audio and achievement video obtains editor's Outcome Document.
2. the method according to claim 1, wherein including: before the step S1
S0, at least default audio channel and all the way default video channel synchronizes audio-video collection all the way, obtain and acquire Channel corresponds and records the consistent at least two audio-videos recorded file of duration, and described two audio-video recorded files point It Wei not default audio recorded file and default video recorded file.
3. according to the method described in claim 2, it is characterized in that, the step S0 includes:
S001, the connection state information for reading audio-video acquisition equipment on each paths;
S002, simultaneously to the audio-video acquisition equipment of each paths issue record command, the audio-video acquisition equipment of each paths It starts simultaneously at recording and creates corresponding audio-video recorded file;
S003, simultaneously to the audio-video acquisition equipment of each paths issue halt instruction, the audio-video acquisition equipment of each paths It is simultaneously stopped the corresponding audio-video recorded file of Record and Save.
4. according to the method described in claim 3, it is characterized in that, including: according to audio-video collection after the step S003 The number of equipment, the type of audio-video acquisition equipment and recording duration generate an acquisition script file;
The step S1 includes:
According to the time shaft on the recording duration rendering audio-video editing rail in acquisition script file, adopted according to the audio-video The number and type for collecting equipment render audio-video editing rail.
5. the method according to claim 1, wherein the step S2 includes:
The number for remembering the label time point is k, and when k is 1, label time point is denoted as t1, as k >=2, label time point is pressed It is denoted as t respectively according to the sequencing of time1~tk, the label time point is arranged according to the sequencing of time, when according to label Between point audio-video recorded file corresponding on each audio-video editing rail be divided into k+1 sections obtain k+1 sections of audio-video segments, Then i-th section of audio-video segment on any audio-video editing rail is that corresponding audio-video records text on the audio-video editing rail T in parti~ti+1The audio-video of period, wherein 0≤i≤k, t0For the start time point of audio-video recorded file;tk+1For sound The termination time point of video record file.
6. the method according to claim 1, wherein the step S3 includes: the edit object for selecting user It records with edit to editor's Outcome Document;
The step S4 include: according to edited Outcome Document by the activation audio of each period and activation video pictures respectively by Time sequencing, which is successively spliced, respectively obtains achievement audio and achievement video.
7. method described in any one according to claim 1~6, which is characterized in that the audio-video segment includes audio piece Section and video clip, the edit include switching, and the edit object includes audio-video segment, and the step S3 includes:
The audio-video recorded file further includes that at least non-default video record file, activation video default are regarded using default all the way Video in frequency recorded file, according to the handover operation of user, the video clip that user is currently selected is as the corresponding period Activation video;
And/or the audio-video recorded file further includes that at least non-default audio recording file, activation audio default use all the way Audio in default audio recorded file, according to the handover operation of user, the audio fragment that user is currently selected is as correspondence The activation audio of period.
8. method described in any one according to claim 1~6, which is characterized in that the edit includes deleting, described Edit object includes audio-video segment, and the step S3 includes:
According to the delete operation of user, the audio-video segment that user currently selects is corresponded to each audio-video editor in the period Audio-video segment on track is deleted.
9. method described in any one according to claim 1~6, which is characterized in that the audio-video segment includes audio piece Section and video clip, the edit include insertion, and the edit object includes label time point, and the step S3 includes;
The label time point that note user currently selects to be inserted into time point, according to the insertion operation of user, remembers that user needs to be inserted into Audio-video duration or user's a length of insertion duration when fixing of picture for needing to be inserted into, will be on each audio-video editing rail Audio-video segment after the insertion time point uniformly moves back the insertion duration;
When the audio-video that the needs are inserted into includes the consistent video pictures of duration and audio, in default video recorded file pair The video pictures are inserted at the insertion time point on audio-video editing rail answered, in the corresponding sound of default audio recorded file The audio is inserted at insertion time point on video editing track;
Or, when the audio-video that the needs are inserted into only includes video pictures, in the corresponding audio-video of default video recorded file The video pictures are inserted at insertion time point on editing rail, by the corresponding audio-video editor rail of default audio recorded file The audio being inserted into duration after insertion time point on road is disposed as mute;
Or, when the audio-video that the needs are inserted into only includes picture, in the corresponding audio-video editor of default video recorded file It is inserted into the picture at insertion time point on track, will be inserted on the corresponding audio-video editing rail of default audio recorded file The audio being inserted into duration after time point is disposed as mute.
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Application publication date: 20190823