WO2014161489A1 - 一种录制文件的剪辑方法及系统 - Google Patents

一种录制文件的剪辑方法及系统 Download PDF

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Publication number
WO2014161489A1
WO2014161489A1 PCT/CN2014/074629 CN2014074629W WO2014161489A1 WO 2014161489 A1 WO2014161489 A1 WO 2014161489A1 CN 2014074629 W CN2014074629 W CN 2014074629W WO 2014161489 A1 WO2014161489 A1 WO 2014161489A1
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WIPO (PCT)
Prior art keywords
cutting
time point
slice
segment
audio
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PCT/CN2014/074629
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English (en)
French (fr)
Inventor
蔡树敏
杨卓霖
陈剑勇
肖丹
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深圳大学
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Application filed by 深圳大学 filed Critical 深圳大学
Priority to US14/432,411 priority Critical patent/US9384782B2/en
Publication of WO2014161489A1 publication Critical patent/WO2014161489A1/zh

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/036Insert-editing
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording

Definitions

  • the present invention belongs to the field of multimedia technologies, and in particular, to a method and system for editing a recorded file.
  • the embodiment of the invention provides a method for editing a recorded file, so as to solve the problem that the discontinuous document file after editing in the prior art is not synchronized with the audio during playback.
  • the embodiment of the present invention is implemented by the method for editing a recorded file, and the method includes:
  • Fragment the audio file, obtain multiple audio fragments, and record the fragmentation time period and the number of audio fragments;
  • the pre-stored document and the audio interactive mapping file are read, and the time points in the document and the audio interaction mapping file are adjusted according to the new slice cutting time point.
  • the embodiment of the invention further provides a editing system for recording a file, the system comprising:
  • a fragmentation unit configured to slice an audio file, acquire a plurality of audio fragments, and record a fragmentation time period and a number of audio fragments
  • a slice cutting unit configured to perform slice cutting on the plurality of the obtained audio segments, and record a slice cutting time point and a corresponding audio slice number
  • a storage unit configured to store the recorded fragmentation time period, the number of audio fragments, the slice cutting time point, and the corresponding audio slice number to a preset slice cutting time point record file;
  • a mapping unit configured to read each slice cutting time point in the slice cutting time point record file, perform time mapping on the slice cutting time point, and store the new slice cutting time point obtained after the mapping in an array
  • an adjustment unit configured to read the pre-stored document and the audio interaction mapping file, and adjust a time point in the document and the audio interaction mapping file according to the new slice cutting time point.
  • the embodiment of the present invention has the beneficial effects that the embodiment of the present invention records, by cutting, merging, merging, and recording the time period of the current audio multiple cuts, and cutting the slice of the audio segment.
  • the time adjustment makes the time difference between the clipped audio and the discontinuous document in continuous playback, thereby effectively solving the problem that the discontinued document file after editing is not synchronized with the audio during playback. problem.
  • the editing efficiency can be greatly improved.
  • FIG. 1 is a schematic diagram of a conventional recording file editing method
  • FIG. 2 is a flowchart of an implementation of a method for editing a recorded file according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of an audio file fragmentation according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic view showing a slice cutting according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of fragmentation, cutting, and merging of audio files according to Embodiment 1 of the present invention.
  • FIG. 6 are schematic diagrams of mappings provided by Embodiment 1 of the present invention.
  • FIG. 7 are schematic diagrams of comparison and mapping between cutting segments provided by Embodiment 1 of the present invention.
  • FIG. 8 is a schematic diagram of time adjustment provided by Embodiment 1 of the present invention.
  • FIG. 9 is an effect diagram of time adjustment provided by the first embodiment of the present invention.
  • FIG. 10 is a structural diagram of a structure of a recorded file editing system according to Embodiment 2 of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 2 is a flowchart showing an implementation process of a method for editing a recorded file according to Embodiment 1 of the present invention. The process of the method is as follows:
  • step S201 the audio file is sliced, a plurality of audio segments are acquired, and the number of slice segments and the number of audio segments are recorded.
  • the fragmentation refers to slice cutting of an audio file in units of the same time.
  • the audio file length is 6673 seconds.
  • the serial number of the audio shard is from 0-22 (here the block and the piece are a concept, unified into a piece), the first 0-21 pieces, each piece is 300 seconds, and the last piece is only 73 seconds.
  • step S202 the obtained plurality of the audio segments are sliced and sliced, and the slice cutting time point and the corresponding audio slice number are recorded.
  • the slice cutting refers to performing any number of cuttings on any of the audio segments.
  • the slice is cut 3 times:
  • the first time the audio segment length is 5 minutes, the cutting time period is 60 seconds - 70 seconds, and the total cutting time is 10 seconds;
  • the second time the audio segment length is 4 minutes and 50 seconds, and the cutting time period is 60 seconds - 70 seconds, and the total cutting time is 10 seconds;
  • the third time the audio slice length is 4 minutes and 40 seconds, and the cutting time period is 70 seconds – 80 seconds, and the total cutting time is 10 seconds.
  • the length of the audio segment is 5 minutes, and the cutting time is 60 seconds – 70 seconds, for a total of 10 seconds;
  • the second time the audio slice length is 4 minutes and 50 seconds, and the cutting time period is 120 seconds – 140 seconds, for a total of 20 seconds.
  • step S203 the recorded slice time period, the number of audio slices, the slice cut time point, and the corresponding audio slice number are stored to a preset slice cut time point record file.
  • the embodiment further includes combining the sliced audio segments.
  • FIG. 5 includes schematic diagrams of audio file slicing, cutting, and merging, where n represents the number of shards and m represents the number of dicing.
  • step S204 each slice cutting time point in the slice cutting time point record file is read, time-mapped, and the new slice cutting time points obtained after the mapping are stored in an array.
  • the mapping is specifically mapping all the slice cutting time points to the corresponding cutting time points on the audio segment, and then mapping the corresponding cutting time points on the audio segment to the cutting time point on the entire audio file.
  • the new slice cut time points obtained after the mapping are stored in the array. Referring to FIG. 4, as shown in FIG. 6, wherein 6a represents a schematic diagram of mapping the first slice to the first audio slice after cutting 3 times; 6b means mapping the second slice to the second audio after 2 times of cutting. Schematic on the slice.
  • mapping process is specifically described as follows:
  • Step 1 Use a script to read the slice cutting time point record file from top to bottom;
  • Step 2 mapping multiple slice cuts of each audio slice, and mapping multiple slice cut time points to corresponding audio slices; for example, mapping the time points of the three cut times to the slice number 0 On the audio slice with the slice number 0, as shown in FIG. 6a, for the same reason, the 2-time cutting time point of the slice number 1 is mapped to the audio slice with the slice number 1 as shown in FIG. 6b.
  • the mapping of each slice is processed in sequence (that is, each row of records on the file is processed sequentially). For the mapping process of each slice, see step 3, and when all the records are processed, proceed to step 4;
  • Step 3 Obtain a slice cutting start time point start and a slice cut end time stop point (corresponding to a line record on the slice cutting time point record file) from the slice cutting time point record file, when the cut segment a For the first cut of the slice (ie, the first line of the corresponding slice is cut), the cut segment a (starting time point a.start and end time point a.stop) is saved in an array, and returns to step 2
  • the cutting segment a is a non-first cutting of the segment
  • the cutting segment a is sequentially iterated sequentially with all the cutting time segments that have been saved before, and then mapped.
  • the comparison and mapping process of the cutting segment a and the saved cutting period b includes the following three cases: (1) when the cutting segment a of the cutting segment a starts at a.start and the segment cutting end time Point a.stop is smaller than the slice cutting start time point b.start of the saved cutting segment, then save the cutting segment a to the front of the cutting segment b, that is, insert a.start and a.stop into the array.
  • B.start front (as shown in Figure 7a), end the iteration, return to step 2; (2) b.start in the middle of the starting time point a.start of the cutting segment and the ending time point a.stop, That is, a and b intersect, then a and b are merged into a new cutting segment a, as shown in Figure 7b (a specific implementation will change a.stop to a.stop + length of the cutting segment b, Delete the saved cutting segment b) and compare the new cutting segment a with the next saved cutting segment c.
  • the mapping process is the same as the comparison process between a and b; if the next saved cutting segment c does not exist, Then end the iteration and return to step 2; (3) the starting time point a.start and the ending time point a.stop of the cutting segment are greater than b.start, then the time point of the cutting segment a is transformed, as shown in Fig. 7c (The specific implementation will change a.start to a.
  • pointArr [i] represents the i+1th cutting time point on the audio time slice
  • start represents the cutting start point
  • stop represents the cutting end time point
  • Stop stop + this cutting time period
  • Stop stop + next cutting time
  • Stop stop + this cutting time period
  • step S206 the pre-stored document and the audio interaction mapping file are read, and the time points in the document and the audio interaction mapping file are adjusted according to the new slice cutting time point.
  • the document and audio interaction mapping file is also called a document playing time point recording file, which is generated together with the recording file after the system recording ends, and is stored in the system.
  • Step 1 Use array A to save the time point (in seconds) to be cut corresponding to the audio file.
  • Step 2 Use array B to save the time and time of the cutting time period
  • Step 3 sequentially read each time point t in the document and the audio interaction mapping file, as shown by the dashed line in FIG. 8, adopt the following adjustment manner for each time point t, and iterate each cutting segment in turn (ie, in array A)
  • the time point of saving) is divided into the following three cases: 1.
  • t is adjusted in the following manner, and the cutting segment c is the first cutting In the segment, t is adjusted to the starting time point c.start of the first cutting segment, as shown in Figure 8c; otherwise t is adjusted to the starting time point of the cutting point c.start -
  • the time sum of all the previous cutting time periods is as shown in Fig. 8d, and the iteration ends; 3.
  • the time point t is greater than the end time point of the cutting segment c, if the next cutting segment d does not exist (as shown in Fig. 8e) Or the time point t is smaller than the starting time point of the next cutting segment d (as shown in Fig.
  • i (i starts counting from 0) represents a certain cutting segment
  • A[2 i] represents the starting time point of the cutting segment i
  • A[2 i+1] indicates the end time point of the cutting segment i
  • next cutting segment does not exist or the time point t is less than the starting time point of the next cutting segment
  • the audio file is sliced, cut, merged, and the current audio is cut for a plurality of times, and the slice cutting time point of the audio slice is mapped to the time point of the audio file, and the time adjustment is performed after a reasonable time adjustment.
  • the clipped audio is consistent with the time map of the discontinuous document during playback (as shown in Figure 9). At the same time, since the audio file is sliced and then cut, the editing efficiency can be greatly improved.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 10 is a block diagram showing the structure of a recording file editing system according to Embodiment 2 of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the recording file editing system may be a software unit, a hardware unit or a combination of hardware and software running in the terminal device.
  • the recording file editing system includes a slice unit 101, a slice cutting unit 102, a storage unit 103, a mapping unit 104, and an adjustment unit 105, the specific functions of which are as follows:
  • the fragmentation unit 101 is configured to slice an audio file, acquire a plurality of audio fragments, and record a fragmentation time period and a number of audio fragments;
  • the slice cutting unit 102 is configured to perform slice cutting on the obtained plurality of the audio segments, and record a slice cutting time point and a corresponding audio slice number;
  • the storage unit 103 is configured to store the recorded fragmentation time period, the number of audio fragments, the slice cutting time point, and the corresponding audio slice number to a preset slice cutting time point record file;
  • the mapping unit 104 is configured to read each slice cutting time point in the slice cutting time point record file, perform time mapping on the slice cutting time point, and store the new slice cutting time point obtained after the mapping in the array ;
  • the adjusting unit 105 is configured to read the pre-stored document and the audio interaction mapping file, and adjust a time point in the document and the audio interaction mapping file according to the new slice cutting time point.
  • mapping unit 104 is specifically configured to:
  • mapping unit 104 is specifically configured to:
  • Reading the slice cutting start time point and the slice cutting end time point from the slice cutting time point recording file when the cutting segment is the first cutting of the audio segment, the segment cutting start of the cutting segment The time point and the slice cut end time point are saved to the array; when the cut segment is the non-first cut of the audio slice, the slice cut start time point and the slice cut end time point of the cut segment are before The saved cutting time period is compared and then mapped;
  • the slice cut time segments of each audio slice are mapped onto the audio file, and the new slice cut time points obtained after the mapping are stored into the array.
  • mapping unit 104 is specifically configured to:
  • the cutting segment a is saved. To the front of the cutting segment b;
  • the time point of the cutting segment a is transformed, and the transformed cutting segment is continued with the next saving.
  • the cutting segment is compared and mapped.
  • adjusting unit 105 is specifically configured to:
  • Reading each time point t in the document and audio interaction mapping file sequentially, when the time point t is less than the starting time point of the cutting segment, if the cutting segment is the first cutting segment, no adjustment time is needed; Otherwise the adjustment method is t t - the time of the previous cutting time period;
  • the editing system of the recording file provided in this embodiment can use the editing method of the corresponding recording file in the foregoing.
  • details refer to the related description of the method embodiment 1 of the above-mentioned recording file, and details are not described herein again.
  • the embodiment of the present invention records, by cutting, merging, and merging an audio file, a time period in which the current audio is cut multiple times, and mapping the time of the slice cutting of the audio slice to the time point of the audio file, and A reasonable time adjustment makes the clipped audio consistent with the time map of the discontinuous document during playback (as shown in Figure 9).
  • the editing efficiency can be greatly improved, and the utility model has strong practicability.

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Abstract

本发明适用于多媒体技术领域,提供了一种录制文件的剪辑方法及系统,所述方法包括:对音频文件进行分片,获取多个音频分片;对获取的多个音频分片进行分片切割;将分片时间段、音频分片的数量、分片切割时间点及音频分片号存储至预设的分片切割时间点记录文件;读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中;读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节。通过本发明可有效解决剪辑后的不连续文档文件在播放时与音频不同步的问题。

Description

一种录制文件的剪辑方法及系统 技术领域
本发明属于多媒体技术领域,尤其涉及一种录制文件的剪辑方法及系统。
背景技术
现有技术在进行录制文件时,上传的多个不连续文档文件是从出现时间点开始加载并记录文件路径及名称的,在播放文档文件时只记录文件的翻转页号。因此对录制文件进行剪辑时,当剪辑时间段如图1a所示,在音频剪辑后结束点所对应的文档文件将不存在,导致剪辑后的不连续文档文件在播放时与音频不同步,如图1b所示。
技术问题
本发明实施例提供一种录制文件的剪辑方法,以解决现有技术存在的剪辑后的不连续文档文件在播放时与音频不同步的问题。
技术解决方案
本发明实施例是这样实现的,一种录制文件的剪辑方法,所述方法包括:
对音频文件进行分片,获取多个音频分片,并记录分片时间段及音频分片的数量;
对获取的多个所述音频分片进行分片切割,并记录分片切割时间点及对应的音频分片号;
将所记录的分片时间段、音频分片的数量、分片切割时间点及对应的音频分片号存储至预设的分片切割时间点记录文件;
读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中;
读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节。
本发明实施例还提供了一种录制文件的剪辑系统,所述系统包括:
分片单元,用于对音频文件进行分片,获取多个音频分片,并记录分片时间段及音频分片的数量;
分片切割单元,用于对获取的多个所述音频分片进行分片切割,并记录分片切割时间点及对应的音频分片号;
存储单元,用于将所记录的分片时间段、音频分片的数量、分片切割时间点及对应的音频分片号存储至预设的分片切割时间点记录文件;
映射单元,用于读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中;
调节单元,用于读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节。
有益效果
本发明实施例与现有技术相比存在的有益效果是:本发明实施例通过对音频文件分片、切割、合并,记录当前音频多次切割的时间段,并将音频分片的分片切割时间点映射到音频文件的时间点后,经过时间调节使得剪辑后的音频与不连续文档在连续播放时时间映射保持一致,从而有效解决剪辑后的不连续文档文件在播放时与音频不同步的问题。同时,由于对音频文件进行分片后再切割,能够极大的提高剪辑效率。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1中的1a、1b是现有录制文件剪辑方法的示意图;
图2是本发明实施例一提供的录制文件剪辑方法的实现流程图;
图3是本发明实施例一提供的音频文件分片的示意图;
图4是本发明实施例一提供的分片切割的示意图;
图5是本发明实施例一提供的音频文件分片、切割以及合并的示意图;
图6中的6a、6b是本发明实施例一提供的映射的示意图;
图7中的7a、7b、7c是本发明实施例一提供的切割段之间比较和映射的示意图;
图8是本发明实施例一提供的时间调节的示意图;
图9是本发明实施例一提供的时间调节后的效果图;
图10是本发明实施例二提供的录制文件剪辑系统的组成结构图。
本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
为了说明本发明所述的技术方案,下面通过具体实施例来进行说明。
实施例一:
图2示出了本发明实施例一提供的录制文件剪辑方法的实现流程,该方法过程详述如下:
在步骤S201中,对音频文件进行分片,获取多个音频分片,并记录分片时间段及音频分片的数量。
在本实施例中,所述分片是指以相同时间为单位对音频文件进行分片切割。如图3所示,该音频文件长度是6673秒 , 分片之后为23个音频分片,音频分片的序号从0-22(这里块和片一个概念,统一为片),前0-21片,每片为300秒,最后一片只有73秒。
在步骤S202中,对获取的多个所述音频分片进行分片切割,并记录分片切割时间点及对应的音频分片号。
在本实施例中,所述分片切割是指对任意音频分片进行任意多次的切割。所述分片切割起始时间点和分片切割结束时间点。
示例性的,如图4所示,当选择第1片(即block序号(音频分片号)为0),分片切割3次:
第一次:音频分片长度5分钟, 切割时间段为 60秒 – 70秒 , 共切割10秒;
第二次:音频分片长度4分 50秒 ,切割时间段为 60秒 – 70秒, 共切割10秒;
第三次:音频分片长度4分 40秒 ,切割时间段为 70秒 – 80秒, 共切割10秒。
再选择第2片(即block序号为1),切割2次:
第一次:音频分片长度5分钟, 切割时间段为 60秒 – 70秒 , 共10秒;
第二次:音频分片长度4分 50秒, 切割时间段为 120秒– 140秒 , 共20秒。
在步骤S203中,将所记录的分片时间段、音频分片的数量、分片切割时间点及对应的音频分片号存储至预设的分片切割时间点记录文件。
本实施例还包括,对分片切割后的音频分片进行合并。
如图5所示,图5包括音频文件分片、切割以及合并的示意图,其中n表示分片数,m表示切割次数。
在步骤S204中,读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中。
在本实施例中,所述映射具体为将所有分片切割时间点映射到音频分片上对应的切割时间点,再将音频分片上对应的切割时间点映射到整个音频文件上的切割时间点,并将映射后获得的新的分片切割时间点存储在数组中。结合图4,如图6所示,其中6a表示第一个分片切割3次后映射到第一个音频分片上的示意图;6b表示第二个分片切割2次后映射到第二个音频分片上的示意图。
在本实施例中,整个映射过程具体描述如下:
步骤1:使用脚本从上到下读取分片切割时间点记录文件;
步骤2:对每一个音频分片的多次分片切割进行映射,将多次分片切割时间点映射到对应的音频分片上;如对于分片号为0的3次切割时间点映射到分片号为0的音频分片上,如图6a所示,同理,对于分片号为1的2次切割时间点映射到分片号为1的音频分片上,如图6b所示。依次处理每个分片的映射(即顺序处理文件上的每一行记录),对于每个分片的映射过程,见步骤3,当所有记录都处理完毕后进入步骤4;
步骤3:从所述分片切割时间点记录文件获取分片切割起始时间点start和分片切割结束时间点stop(对应分片切割时间点记录文件上的一行记录),当该切割段a为分片第一次切割(即对应分片的第一行切割记录)时,将该切割段a(起始时间点a.start和结束时间点a.stop)用数组保存下来,返回步骤2;当该切割段a是分片的非第一次切割时,将该切割段a与之前已经保存的所有切割时间段顺序迭代依次作比较,再进行映射。其中,切割段a与保存的某个切割时间段b的比较和映射过程,包括以下三种情况:(1)当切割段a的分片切割起始时间点a.start与分片切割结束时间点a.stop均小于已保存的切割段的分片切割起始时间点b.start,则将切割段a保存到切割段b的前面,即在数组中将a.start和a.stop插入到b.start的前面(如图7a所示),结束迭代,返回步骤2; (2) b.start在切割段的起始时间点a.start与结束时间点a.stop的中间, 即a与b相交,则将a与b合并成新的切割段a,如图7b所示(具体的实现方式将a.stop变为a.stop + 切割段b的长度, 删除保存的切割段b),并将新的切割段a继续与下一个保存的切割段c做比较映射,映射过程同a与b的比较过程一样;如果下一个保存的切割段c不存在,则结束迭代,返回步骤2;(3)切割段的起始时间点a.start与结束时间点a.stop均大于b.start,则将切割段a的时间点做变换,如图7c所示(具体的实现方式将a.start变为a. start+ 切割段b的长度, a.stop变为a.stop + 切割段b的长度),此时如果切割段b是最后一个保存切割段,则返回步骤2,否则将新的切割段继续与下一个保存的切割段c做比较映射,映射过程同a与b的比较过程一样。
步骤4:当各个音频分片都映射完毕后,将各个音频分片切割时间段都映射都整个音频文件上(具体的实现方式将各自的切割时间段按以下公式进行变换: t = t + blockNum 300,其中300表示5分钟),并将映射后获得的新的分片切割时间点存储至所述数组中。
本实施例还给出了映射过程伪代码,如下所示:
一次切割时间段在对应音频分片上的时间映射伪代码:
其中用数组pointArr存储音频分片切割时间点,pointArr [i]表示该音频时间分片上的第i+1个切割时间点,start表示切割起始点,stop表示切割结束时间点
Begin
for 循环 分片上所有切割段的起始时间点pointArr,
If start < pointArr [i] && stop < pointArr [i]
将start作为第一个元素插入到数组pointArr
将stop作为第二个元素插入到数组pointArr
跳出for循环
else if(start <= pointArr [i] && stop >= pointArr [i])
stop = stop + 本次切割时间段
for 循环判断stop是否存在于下一个切割段
stop = stop + 下一个切割时间段
end for
pointArr [i] = start
pointArr [i+1] = stop
跳出for循环
else
start = start + 本次切割时间段
stop = stop + 本次切割时间段
if i+1已经是最后一个时间点
pointArr [i] = start
pointArr [i+1] = stop
跳出for循环
Else
i = i + 2 进行下一个切割段的起始时间点
end
end
end for
end begin。
在步骤S206中,读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节。其中,所述文档与音频交互映射文件也叫做文档播放时间点记录文件,它在系统录制结束后与录制文件共同生成,并存储在系统内。
在本实施例中,调节文档与音频交互映射文件的具体步骤如下:
步骤1:使用数组A保存对应于音频文件的要切割的时间点(单位为秒),
如A[0] = 5,A[1] = 10,A[2] = 15,A[3] = 25,A[4]= 315, A[5] = 400;
表示对音频文件进行切割的时间段为:5-10, 15-25, 315-400这3个切割时间段。
步骤2:使用数组 B保存切割时间段的时间和,
如 B[0] = A[1] – A[0] = 5
B[1]= A[3] – A[2] + B[0] = 15
B[2]= A[5] – A[4] + B[1] = 100
对于数组B,归纳如下:
当i=0,B[0] = A[1] – A[0]
当i > 0, B[i] = A[2 i+1] – A[2 i] + B[i-1]
步骤3:顺序读取所述文档与音频交互映射文件中的每一个时间点t,如图8的虚线,对每个时间点t采取以下调节方式,依次迭代每个切割段(即数组A中保存的时间点),分以下三种情况:一、当时间点t小于切割段c的起始时间点c.start时,若切割段c为第一个切割段时,不需要调节时间,如图8a所示;否则调节方式为t = t - 前面的切割时间段的时间和,如图8b所示,并结束迭代;二、当时间点t在切割段c的时间范围内,采用以下方式对t进行调节,切割段c为第一个切割段时,t调节为第一个切割段的起始时间点c.start,如图8c所示;否则t调节为该切割点的起始时间点c.start - 前面的所有切割时间段的时间和,如图8d所示,并结束迭代;三、当时间点t大于切割段c的结束时间点时,如果下一个切割段d不存在(如图8e所示)或者是时间点t小于下一个切割段d的起始时间点(如图8f所示),则调节方式为t =t -前面的切割时间段的时间和,并结束迭代,否则如果下一个切割段d存在并且时间点t大于它的起始时间点d.start时,如图8g所示,则继续迭代。
本实施例还给出了时间调节过程伪代码,如下所示:
其中用i(i从0开始计数)表示某个切割段,A[2 i]表示切割段i的起始时间点,A[2 i+1]表示切割段i的结束时间点
for 循环切割段i,从0开始迭代
if t < A[2 i]
if 该切割段为非第一个切割段
t = t -B[i-1]
跳出循环
else if t >= A[2 i] && t <= A[2 i+1]
if 该切割段为第一个切割段
t = A[0]
else
t = A[2 i] - B[i-1]
跳出循环
else if t > A[2 i+1]
if 下一个切割段不存在或者是时间点t小于下一个切割段的起始时间点
t = t - B[i]
跳出循环
else
迭代+1
end
end
end。
本发明实施例通过对音频文件分片、切割、合并,记录当前音频多次切割的时间段,将音频分片的分片切割时间点映射到音频文件的时间点,并经过合理的时间调节使得剪辑后的音频与不连续文档在播放时时间映射保持一致(如图9所示)。同时,由于对音频文件进行分片后再切割,能够极大的提高剪辑效率。
实施例二:
图10示出了本发明实施例二提供的录制文件剪辑系统的组成结构,为了便于说明,仅示出了与本发明实施例相关的部分。
该录制文件剪辑系统可以是运行于终端设备内的软件单元、硬件单元或者软硬件相结合的单元。
该录制文件剪辑系统包括分片单元101、分片切割单元102、存储单元103、映射单元104以及调节单元105,其具体功能如下:
分片单元101,用于对音频文件进行分片,获取多个音频分片,并记录分片时间段及音频分片的数量;
分片切割单元102,用于对获取的多个所述音频分片进行分片切割,并记录分片切割时间点及对应的音频分片号;
存储单元103,用于将所记录的分片时间段、音频分片的数量、分片切割时间点及对应的音频分片号存储至预设的分片切割时间点记录文件;
映射单元104,用于读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中;
调节单元105,用于读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节。
进一步的,所映射单元104具体用于:
从所述分片切割时间点记录文件中读取每组数据,将读取的数据映射到对应音频分片的分片切割时间点,再将各个音频分片的分片切割时间点映射到所述音频文件上,并将映射后获得的新的分片切割时间点存储在数组中。
进一步的,所述映射单元104具体用于:
对每一个音频分片的多次分片切割进行映射,将分片切割时间点映射到对应的音频分片上;
从所述分片切割时间点记录文件读取分片切割起始时间点和分片切割结束时间点,当切割段为音频分片第一次切割时,将该切割段的分片切割起始时间点和分片切割结束时间点保存至数组;当该切割段是音频分片的非第一次切割时,将该切割段的分片切割起始时间点和分片切割结束时间点与之前已经保存的切割时间段作比较,再进行映射;
当各个音频分片都映射完后,将各个音频分片的分片切割时间段都映射都所述音频文件上,并将映射后获得的新的分片切割时间点存储至数组中。
进一步的,所述映射单元104具体用于:
当该切割段的分片切割起始时间点a.start与分片切割结束时间点a.stop均小于已保存的切割段的分片切割起始时间点b.start,则将切割段a保存到切割段b的前面;
当b.start在切割段a的起始时间点a.start与结束时间点a.stop的中间,即a与b相交,则将切割段a与切割段b合并成新的切割段,并将新的切割段继续与下一个保存的切割段做比较映射;
当切割段a的起始时间点a.start与结束时间点a.stop均大于b.start,则将切割段a的时间点做变换,并将所述变换后的切割段继续与下一个保存的切割段做比较映射。
进一步的,所述调节单元105具体用于:
顺序读取所述文档与音频交互映射文件中的每一个时间点t,当时间点t小于切割段的起始时间点时,若该切割段为第一个切割段时,不需要调节时间;否则调节方式为t = t -前面的切割时间段的时间和;
当时间点t在切割段的起始时间点和结束时间点内,若切割段为第一个切割段时,t调节为第一个切割段的起始时间点;否则t=该切割段的起始时间点c.start-前面的所有切割时间段的时间和;
当时间点t大于切割段的结束时间点时,如果下一个切割段不存在或者是时间点t小于下一个切割段的起始时间点,则t =t -前面的切割时间段的时间和;如果下一个切割段存在并且时间点t大于它的起始时间点时,则与下下一个切割段进行比较。
本实施例提供的录制文件的剪辑系统可以使用在前述对应的录制文件的剪辑方法,详情参见上述录制文件的剪辑的方法实施例一的相关描述,在此不再赘述。
本领域普通技术人员可以理解为上述实施例二所包括的各个单元只是按照功能逻辑进行划分的,但并不局限于上述的划分,只要能够实现相应的功能即可;另外,各功能单元的具体名称也只是为了便于相互区分,并不用于限制本发明的保护范围。
综上所述,本发明实施例通过对音频文件分片、切割、合并,记录当前音频多次切割的时间段,将音频分片的分片切割时间点映射到音频文件的时间点,并经过合理的时间调节使得剪辑后的音频与不连续文档在播放时时间映射保持一致(如图9所示)。同时,由于对音频文件进行分片后再切割,能够极大的提高剪辑效率,具有较强的实用性。
本领域普通技术人员还可以理解,实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,所述的程序可以在存储于一计算机可读取存储介质中,所述的存储介质,包括ROM/RAM、磁盘、光盘等。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明,不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思的前提下做出若干等同替代或明显变型,而且性能或用途相同,都应当视为属于本发明由所提交的权利要求书确定的专利保护范围。

Claims (10)

  1. 一种录制文件的剪辑方法,其特征在于,所述方法包括:
    对音频文件进行分片,获取多个音频分片,并记录分片时间段及音频分片的数量;
    对获取的多个所述音频分片进行分片切割,并记录分片切割时间点及对应的音频分片号;
    将所记录的分片时间段、音频分片的数量、分片切割时间点及对应的音频分片号存储至预设的分片切割时间点记录文件;
    读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中;
    读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节。
  2. 如权利要求1所述的方法,其特征在于,所述读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中具体包括:
    从所述分片切割时间点记录文件中读取每组数据,将读取的数据映射到对应音频分片的分片切割时间点,再将各个音频分片的分片切割时间点映射到所述音频文件上,并将映射后获得的新的分片切割时间点存储在数组中。
  3. 如权利要求1所述的方法,其特征在于,所述读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中具体包括:
    对每一个音频分片的多次分片切割进行映射,将分片切割时间点映射到对应的音频分片上;
    从所述分片切割时间点记录文件读取分片切割起始时间点和分片切割结束时间点,当切割段为音频分片第一次切割时,将该切割段的分片切割起始时间点和分片切割结束时间点保存至数组;当该切割段是音频分片的非第一次切割时,将该切割段的分片切割起始时间点和分片切割结束时间点与之前已经保存的切割时间段作比较,再进行映射;
    当各个音频分片都映射完后,将各个音频分片的分片切割时间段都映射都所述音频文件上,并将映射后获得的新的分片切割时间点存储至数组中。
  4. 如权利要求3所述的方法,其特征在于,所述将该切割段的分片切割起始时间点和分片切割结束时间点与之前已经保存的切割时间段作比较具体包括:
    当该切割段的分片切割起始时间点a.start与分片切割结束时间点a.stop均小于已保存的切割段的分片切割起始时间点b.start,则将切割段a保存到切割段b的前面;
    当b.start在切割段a的起始时间点a.start与结束时间点a.stop的中间,即a与b相交,则将切割段a与切割段b合并成新的切割段,并将新的切割段继续与下一个保存的切割段做比较映射;
    当切割段a的起始时间点a.start与结束时间点a.stop均大于b.start,则将切割段a的时间点做变换,并将所述变换后的切割段继续与下一个保存的切割段做比较映射。
  5. 如权利要求1所述的方法,其特征在于,所述读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节具体包括:
    顺序读取所述文档与音频交互映射文件中的每一个时间点t,当时间点t小于切割段的起始时间点时,若该切割段为第一个切割段时,不需要调节时间;否则调节方式为t = t -前面的切割时间段的时间和;
    当时间点t在切割段的起始时间点和结束时间点内,若切割段为第一个切割段时,t调节为第一个切割段的起始时间点;否则t=该切割段的起始时间点c.start-前面的所有切割时间段的时间和;
    当时间点t大于切割段的结束时间点时,如果下一个切割段不存在或者是时间点t小于下一个切割段的起始时间点,则t =t -前面的切割时间段的时间和;如果下一个切割段存在并且时间点t大于它的起始时间点时,则与下下一个切割段进行比较。
  6. 一种录制文件的剪辑系统,其特征在于,所述系统包括:
    分片单元,用于对音频文件进行分片,获取多个音频分片,并记录分片时间段及音频分片的数量;
    分片切割单元,用于对获取的多个所述音频分片进行分片切割,并记录分片切割时间点及对应的音频分片号;
    存储单元,用于将所记录的分片时间段、音频分片的数量、分片切割时间点及对应的音频分片号存储至预设的分片切割时间点记录文件;
    映射单元,用于读取所述分片切割时间点记录文件中的每一个分片切割时间点,对其进行时间映射,并将映射后获得的新的分片切割时间点存储在数组中;
    调节单元,用于读取预存的文档与音频交互映射文件,根据所述新的分片切割时间点对所述文档与音频交互映射文件中的时间点进行调节。
  7. 如权利要求6所述的系统,其特征在于,所映射单元具体用于:
    从所述分片切割时间点记录文件中读取每组数据,将读取的数据映射到对应音频分片的分片切割时间点,再将各个音频分片的分片切割时间点映射到所述音频文件上,并将映射后获得的新的分片切割时间点存储在数组中。
  8. 如权利要求6所述的方法,其特征在于,所述映射单元具体用于:
    对每一个音频分片的多次分片切割进行映射,将分片切割时间点映射到对应的音频分片上;
    从所述分片切割时间点记录文件读取分片切割起始时间点和分片切割结束时间点,当切割段为音频分片第一次切割时,将该切割段的分片切割起始时间点和分片切割结束时间点保存至数组;当该切割段是音频分片的非第一次切割时,将该切割段的分片切割起始时间点和分片切割结束时间点与之前已经保存的切割时间段作比较,再进行映射;
    当各个音频分片都映射完后,将各个音频分片的分片切割时间段都映射都所述音频文件上,并将映射后获得的新的分片切割时间点存储至数组中。
  9. 如权利要求8所述的系统,其特征在于,所述映射单元具体用于:
    当该切割段的分片切割起始时间点a.start与分片切割结束时间点a.stop均小于已保存的切割段的分片切割起始时间点b.start,则将切割段a保存到切割段b的前面;
    当b.start在切割段a的起始时间点a.start与结束时间点a.stop的中间,即a与b相交,则将切割段a与切割段b合并成新的切割段,并将新的切割段继续与下一个保存的切割段做比较映射;
    当切割段a的起始时间点a.start与结束时间点a.stop均大于b.start,则将切割段a的时间点做变换,并将所述变换后的切割段继续与下一个保存的切割段做比较映射。
  10. 如权利要求6所述的系统,其特征在于,所述调节单元具体用于:
    顺序读取所述文档与音频交互映射文件中的每一个时间点t,当时间点t小于切割段的起始时间点时,若该切割段为第一个切割段时,不需要调节时间;否则调节方式为t = t -前面的切割时间段的时间和;
    当时间点t在切割段的起始时间点和结束时间点内,若切割段为第一个切割段时,t调节为第一个切割段的起始时间点;否则t=该切割段的起始时间点c.start-前面的所有切割时间段的时间和;
    当时间点t大于切割段的结束时间点时,如果下一个切割段不存在或者是时间点t小于下一个切割段的起始时间点,则t =t -前面的切割时间段的时间和;如果下一个切割段存在并且时间点t大于它的起始时间点时,则与下下一个切割段进行比较。
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Publication number Priority date Publication date Assignee Title
CN103247317B (zh) * 2013-04-03 2015-11-25 深圳大学 一种录制文件的剪辑方法及系统
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CN106782506A (zh) * 2016-11-23 2017-05-31 语联网(武汉)信息技术有限公司 一种将录音音频分割成段的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014371A2 (en) * 1998-12-16 2000-06-28 Samsung Electronics Co., Ltd. Method for generating information for fast searching of packet data, recording medium storing the information, and recording and/or playback apparatus using the same
US6182200B1 (en) * 1997-09-24 2001-01-30 Sony Corporation Dense edit re-recording to reduce file fragmentation
CN101227602A (zh) * 2007-01-18 2008-07-23 中兴通讯股份有限公司 文件存储方法和文件播放方法
CN103247317A (zh) * 2013-04-03 2013-08-14 深圳大学 一种录制文件的剪辑方法及系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6532513B1 (en) * 1999-11-16 2003-03-11 Matsushita Electric Industrial Co., Ltd. Information recording and reproduction apparatus
US7062442B2 (en) * 2001-02-23 2006-06-13 Popcatcher Ab Method and arrangement for search and recording of media signals
US8214516B2 (en) * 2006-01-06 2012-07-03 Google Inc. Dynamic media serving infrastructure
CN101635848B (zh) * 2008-07-22 2013-08-07 北大方正集团有限公司 一种视频文件的编辑方法和装置
JP2010086615A (ja) * 2008-09-30 2010-04-15 Toshiba Corp 多重化装置およびプログラムおよび多重化方法
CN101740084B (zh) * 2009-11-25 2012-05-09 中兴通讯股份有限公司 多媒体片段的剪辑方法及移动终端
US20140025710A1 (en) * 2012-07-23 2014-01-23 Espial Group Inc. Storage Optimizations for Multi-File Adaptive Bitrate Assets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6182200B1 (en) * 1997-09-24 2001-01-30 Sony Corporation Dense edit re-recording to reduce file fragmentation
EP1014371A2 (en) * 1998-12-16 2000-06-28 Samsung Electronics Co., Ltd. Method for generating information for fast searching of packet data, recording medium storing the information, and recording and/or playback apparatus using the same
CN101227602A (zh) * 2007-01-18 2008-07-23 中兴通讯股份有限公司 文件存储方法和文件播放方法
CN103247317A (zh) * 2013-04-03 2013-08-14 深圳大学 一种录制文件的剪辑方法及系统

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