CN105592356B - Kinds of audio and video clips online virtual methods and systems - Google Patents

Kinds of audio and video clips online virtual methods and systems Download PDF

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CN105592356B
CN105592356B CN 201410563990 CN201410563990A CN105592356B CN 105592356 B CN105592356 B CN 105592356B CN 201410563990 CN201410563990 CN 201410563990 CN 201410563990 A CN201410563990 A CN 201410563990A CN 105592356 B CN105592356 B CN 105592356B
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audio
video
clip
data
information
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CN 201410563990
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CN105592356A (en )
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肖诗斌
刘珅
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北京拓尔思信息技术股份有限公司
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Abstract

本发明提供种精准的音视频在线虚拟剪辑方法,其包括:步骤S10,音视频对象获取;步骤S20,音视频对象转码;步骤S30,用户在线剪辑;步骤S40,音视频对象准确定位;步骤S50,剪辑关联。 The present invention provides species accurate AV virtual online editing method comprising: a step S10, the audio and video object acquisition; step S20, the audio and video objects transcoding; Step S30, the users online editing; step S40, the audio and video objects accurate positioning; Step S50, clip association. 将剪辑工具嵌入浏览器,采用流媒体增强型定位技术,精准定位到帧,剪辑信息与父视频进行关联,以实现虚拟剪辑。 The editing tools embedded browser, streaming media enhanced positioning technology, precise positioning of the frame, the clip information associated with the parent video, to realize the virtual clip. 此外,本发明还提供种精准的音视频在线虚拟剪辑系统,包括:播放器、在线剪辑工具,流媒体服务器、音视频数据处理服务器,数据库三大模块,实现音视频的精准、高效的在线编辑和播放,同时避免音视频的重复存储,提高存储空间有效利用率。 Further, the present invention also provides a kind of virtual line accurate video and audio editing system, comprising: a player, the online editing tools, streaming media server, audio and video data processing server, database three modules, audio and video for precise, efficient online editing and play, while avoiding duplication of audio and video storage, and improve the effective utilization of storage space.

Description

一种音视频在线虚拟剪辑方法和系统 A tone generating video clips online virtual methods and systems

技术领域 FIELD

[0001 ]本发明涉及网络音视频编辑领域,特别涉及一种音视频在线虚拟剪辑方法和系统。 [0001] The present invention relates to network audio and video editing, and more particularly relates to an audio and video editing method and system virtual line.

背景技术 Background technique

[0002]大数据时代多模态信息急剧膨胀,尤以音视频信息量增速快,为此对音视频信息进行二次剪辑以提高观看效率、方便存储和检索的需求量越来越迫切。 [0002] Large data age multimodal rapid expansion of information, particularly audio and video information faster growth rate, for audio and video information to improve the secondary clip viewing efficiency, easy storage and retrieval demand more and more urgent.

[0003]传统的音视频剪辑软件基于C/S架构,用户需要安装客户端软件并维护软件的更新,需要多次复制音视频文件,造成了极大的不便;由此出现了在线音视频剪辑软件系统, 但是这些系统存在以下缺陷:第一,只能定位到秒级和关键帧,无法定位到非关键帧,无法实现音视频的精确剪辑;第二,剪辑后产生物理空间,加大了磁盘空间开销。 [0003] The traditional audio and video editing software based on C / S structure, users need to install client software and software maintenance updates, you need multiple copies of audio and video files, causing great inconvenience; thus emerged online audio and video clips software systems, but these systems present the following defects: first, the second stage and only target key frame, unable to locate the non-key frame, audio and video clips can not be accurate; generating a physical space after a second, clip, increased disk space overhead.

[0004]为此,需要一种高效、精准的音视频剪辑方法和系统,以解决音视频二次剪辑问题,满足企业级用户对音视频精准性的播放需求。 [0004] To this end, an efficient and accurate method and system for audio and video clips, to address the secondary audio and video clips problems and meet the needs of enterprise users to play audio and video of accuracy.

发明内容 SUMMARY

[0005]综上,本发明提供了一种音视频在线虚拟剪辑方法和系统,在保证精确定位到帧的前提下,采用△〇1^¥61、? [0005] In summary, the present invention provides a virtual clip AV-line method and a system to ensure accurate positioning of the premise of the frame, using △ 〇1 ^ ¥ 61 ,? 18311、1^¥15等技术嵌入剪辑工具到浏览器,在浏览器端实现快速剪辑操作,并将剪辑信息存入数据库与父音视频进行关联,实现在线虚拟剪辑,避免产生新的音视频文件,提高了音视频剪辑的高效性、精准性。 18311,1 ^ ¥ 15 embedded clips and other technical tools to the browser, for fast editing operations on the browser side, and a clip information stored in the database associated with the parent audio and video, for online virtual clip, avoid new audio and video files improve the efficiency, accuracy audio and video clips.

[0006] 本发明提供了一种音视频在线虚拟剪辑方法,其包括: [0006] The present invention provides a virtual clip AV line method, comprising:

[0007] 步骤S10:音视频对象获取。 [0007] Step S10: acquisition of audio and video objects. 确定待剪辑的音视频对象; The object is determined to be AV clip;

[000S]步骤S20:音视频对象转码。 [000s] Step S20: transcoding audio and video objects. 自动分析音视频对象的格式、特征、参数,匹配适合的转码策略,将音视频对象转换为适合网络播放,并能兼容电脑、智能手机和平板等各种终端的浏览器直接播放的音视频文件; Automatic analysis of audio and video format objects, features, parameters, matching strategy for transcoding to convert audio and video objects suitable for network play, and is compatible with various browsers terminal computers, smartphones and tablets such as direct broadcast of audio and video file;

[0009]步骤S30:用户在线剪辑。 [0009] Step S30: users online clips. 在浏览器中嵌入播放器及在线剪辑工具,提供用户交互剪辑操作; Embedded player and online editing tools in the browser to provide user interaction clip operations;

[0010]步骤S40:音视频对象准确定位。 [0010] Step S40: accurate positioning of audio and video objects. 实现对关键帧、非关键帧的准确定位、标注,计算剪辑位置的精确时间点; Achieve accurate positioning of the key frame, the non-key frames are denoted, calculate the precise point of time of the position of the clip;

[0011]步骤S50:剪辑关联。 [0011] Step S50: association clip. S30的用户交互剪辑数据以及S40获得的定位时间点数据,经过处理,以一定的格式存储到数据库中,根据音视频ID信息,建立剪辑后音视频与父音视频的关联。 S30 user interaction data and clip positioning time point data S40 obtained, processed, stored in a certain format in the database, according to the audio and video ID information, audio, video and associated audio and video after the parent clip.

[0012] 特别的,步骤S20,音视频对象转码,又包括: [0012] In particular, step S20, the audio and video transcoding the object, and comprising:

[0013]步骤S201,获取该音视频的元数据。 [0013] In step S201, the metadata acquiring audio and video.

[00 M]其中,音视频元数据,主要包括文件整体信息、视频轨数据和音频轨数据; [00 M] wherein audio and video metadata, including the overall message file, video data and audio track data track;

[0015]文件整体数据,主要包括时长、比特率、容器格式、其他信息;视频轨数据,主要包括视频编码格式、视频编码器、比特率、帧率、帧数、宽度、高度、像素格式;音频轨数据,主要包括音频编码格式、编码器、声道数、采样率、比特率。 [0015] The overall data file, including a long time, the bit rate, the container format, additional information; video track data, including video encoding format, the video encoder, bit rate, frame rate, number of frames, width, height, pixel format; audio track data, including audio coding format, the encoder, the number of channels, sample rate, bit rate.

[0016] 步骤S202,转换音视频对象的编码。 [0016] Step S202, the transcoding audio and video objects.

[0017] 根据元数据匹配合适的转码策略,把采集的音视频对象文件转换成适合网络播放,并能兼容电脑、智能手机和平板等各种终端的浏览器直接播放的音视频文件格式。 [0017] The audio and video file format metadata to match the appropriate transcoding strategy to convert audio and video capture object files into a suitable network broadcast, and is compatible with various terminals browser computers, smart phones and the like played directly tablet.

[0018] 更特别,步骤S3〇,用户在线剪辑。 [0018] More particularly, step S3〇, clip online users. 通过浏览器加载音视频对象到播放器,同时加载在线剪辑工具,用户通过拖动、快进、快退、按帧微调对音视频进行定位剪辑操作;通过在线契辑工具实现首视频对象描述性信息的录入,包括剪辑后音视频的标题、标签、分类、人物、 简介。 Loading a browser object to the audio and video player, while loading online editing tools, the user drags, fast forward, rewind, frame by frame trim audio and video clips positioning operation; to achieve the first object description of the online video editing tools lease entry information, including audio and video clips title after labeling, sorting, characters, brief introduction.

[0019]更进一步,步骤S40,音视频对象准确定位。 [0019] Further, step S40, the audio and video objects accurate positioning. 对于音频对象,只存在一种数据帧,可以直接定位,但视频对象,存在I帧、P帧、B帧三种数据帧,采用流媒体增强型定位技术,在用户实现音视频的位置剪辑时,以动态插入I帧来实现精确定位,除了能准确定位到关键帧(工帧)外,还能定位到非关键帧(P帧、B帧);结合音视频元数据分析,计算定位帧的精确时间点;而在播放预览时忽略掉定位前的图片,预览该位置对应的视频图片。 For audio object, there is only one data frame can be positioned directly, but the video objects, the presence of I frames, P frames, B frames three data frames, streaming media enhanced positioning technology, the position of the clip in the user audio and video to dynamically insert I-frames to achieve precise positioning, in addition to accurately locate the key frames (I frames), but also targeted to non-key frames (P frames, B frames); binding analysis of audio and video metadata, calculating a position of the frame the exact point in time; and ignore the picture before positioning when playing out a preview, a preview of the position corresponding video images.

[0020]更进一步,本发明还提供了一种音视频在线虚拟剪辑系统,该系统包括:系统客户端M100;数据处理服务端M200;数据库服务器M300。 [0020] Still further, the present invention also provides an online virtual clip AV system, the system comprising: a client system M100; end of the M200 data processing services; database server M300.

[0021]其中,系统客户&M100,通过浏觅器访问,包括音视频播放器Ml〇l和米用ActiveX、 Flash、HTML5等技术嵌入的在线剪辑工具M102。 [0021] wherein the client system & amp; M100, seek access by Liu, comprising audio and video players and rice Ml〇l with ActiveX, Flash, HTML5 technology embedded online editing tools M102.

[0022]在线剪辑工具M102可以对音视频进行按帧定位,实现音视频拖动、快进、快退、按帧微调,创建视频描述信息等编辑操作,并将数据提交到系统数据处理服务端M200。 [0022] M102 online editing tools can be positioned in a frame of audio and video, audio and video realized drag, fast forward, rewind, frame by frame trim, creates video editing operations such as description information, and submit the data to the server data processing system M200.

[0023]数据处理服务端M200,实现对音视频对象以及音视频元数据的处理,包括音视频数据处理服务器M201和流媒体服务器M202。 [0023] The data processing server the M200, audio and video objects realize the processing of video and audio and metadata, including audio and video data processing server and streaming server M201 M202.

[0024] 音视频数据处理服务器M2〇l,主要是对音视频文件进行加工处理,同时还接受并处理剪辑工具提交的用户编辑数据以及流媒体服务器M202定位信息,经适当处理后,提交给数据库服务器M300存储。 [0024] audio and video data processing server M2〇l, mainly for processing the audio and video files, and also accept and process the user to edit data, and streaming media server M202 editing tools location information submitted after appropriate treatment, committed to the database M300 server storage.

[0025]流媒体服务器M202,以流式协议将音视频文件传送给客户端播放器,供用户在线观看,同时提供增强型定位技术,实现音视频的精准定位。 [0025] M202 streaming server, a streaming protocol to transfer audio and video files to the client player for viewing online users, while providing enhanced positioning technology, to achieve precise positioning of the audio and video.

[0026]数据库服务器M300,存储音视频的相关数据和用户剪辑数据。 [0026] The database server M300, data storage, and user audio and video clip data.

[0027]在音视频剪辑阶段,播放器M101向流媒体服务器M202请求播放音视频对象,客户端M100获取音视频对象,用户通过在线剪辑工具M102实现对象的标注、剪辑,并将剪辑结果提交给流媒体服务器M202进行剪辑定位,定位数据和音视频描述数据被提交给音视频数据处理服务器M201,音视频数据处理服务器M201根据需要进行相应处理后,上传至数据库服务器M300保存。 [0027] In AVClip stage, the player requests the streaming server M101 M202 play audio and video objects, audio and video acquisition client objects M100, M102 user to achieve the object denoted by online editing tools, clip, and the clip results to after streaming media server M202 for editing positioning, which audio and video data and description data is submitted to processing audio and video data server M201, M201 audio and video data processing server corresponding processing if necessary, to save M300 uploaded to the database server.

[0028] 在音视频播放阶段,播放器M101调用统一接口向音视频数据处理服务器M201请求虚拟音视频相关信息,音视频数据处理服务器M201从数据库服务器M300处检索音视频相关数据,并将虚拟音视频播放需求数据以一定格式返回给播放器M101,播放器M101解析数据得到音视频播放地址,请求流媒体服务器M202进行播放,流媒体服务器M202返回播放流到播放器M101,实现在线音视频的剪辑和播放。 [0028] In the audio and video playback stage, the player calls M101 M201 unified interface data processing server requests a virtual audio and video to audio and video information, audio and video data processing server M201 related data from the database server to retrieve audio and video at the M300, and Virtual Tone video player needs to return to a certain data format to the player M101, M101 player audio and video analysis data obtained address, request M202 to play streaming media server, streaming media server M202 M101 returns player flowing player, online audio and video clips to achieve and play.

[0029]本发明提供了一种精准的音视频在线虚拟剪辑方法和系统,将在线编辑工具嵌入浏览器,采用流媒体增强型定位技术,按帧精准定位,剪辑数据与父视频进行关联存储,实现音视频的精准、高效的在线编辑和播放,同时避免音视频的重复存储,提高存储空间的有效利用率。 [0029] The present invention provides an accurate virtual clip AV-line method and system, the online editing tool embedded browser, streaming media enhanced positioning technique, frame-accurate positioning, video clip data stored in association with the parent, audio and video to achieve precise and efficient online editing and playback, while avoiding duplication of audio and video storage, improve the effective utilization of storage space. ' ° 工 '° Workers

附图说明 BRIEF DESCRIPTION

[0030]图1为本发明实施例提供的一种音视频在线虚拟剪辑方法流程图[0031]图2为本发明实施例提供的一种音视频在线剪辑系统模块图。 [0030] Figure 1 is a flow chart of an embodiment of audio and video line provided by the virtual clip Method [0031] FIG. 2 is a tone generating-line video editing system block diagram according to an embodiment INVENTION. 、。 .

[0032]图3为本发明实施例提供的一种音视频在线虚拟剪辑系统音视频剪辑流程图。 [0032] FIG. 3 provides a tone generating virtual video line editing system AVClip flowchart embodiment of the present invention. [0033]图4为本发明头施例提供的一种首视频在线虚拟剪辑系统虚拟剪辑播放流程图。 One kind of the first video line [0033] FIG. 4 embodiment of the present invention to provide a virtual clip playback system virtual clip flowchart. 具体实施方案 Specific embodiments

[0034]为使本发明实施例的目的、技术方法及优点更加清晰,以下结合附图对本发明实施例详细阐述。 [0034] The object of the present invention, embodiments, and advantages of the art methods clearer detail the following embodiments of the present invention in conjunction with the accompanying drawings. < ' < '

[0035]图1所示为本发明实施例提供的一种音视频在线剪辑方法流程图。 A flowchart of a clip AV-line method provided by the present embodiment shown in [0035] FIG invention.

[0036]如图1所不,首先音视频对象获取S10,确定待剪辑的音视频对象;音视频对象转码S20,获取音视频对象的时长、比特率、容器格式、其他信息;视频编码格式、视频编码器、比特率、巾贞率、巾贞数、宽度、闻度、像素格式;音频编码格式、编码器、声道数、采样率、比特率;根据这些元数据选择合适的转码策略,转换为适合网络播放,并能兼容电脑、智能手机和平板等各种终端的浏览器直接播放的音视频文件,目前主流的视频格式有MP4和FLV,而FLV目前只能在支持flash的设备上播放,不支持智能手机和平板设备,因此,通常转码成1^4格式, 要求分别对视频编码、音频编码和容器进行转换,转码成由H264视频编码+AAC音频编码+ mp4容器组合成的MP4文件格式;用户在线剪辑S:30,用户可以对音视频进行快进、快退、按帧微调等位置到辑操作,以及对象描述性信 [0036] FIG. 1 is not, first of all audio and video object acquisition SlO, determined audio and video object to be clip; audio and video objects transcoding S20, acquires the audio and video object duration, bit rate, the container format, additional information; video encoding format , video encoder, the bit rate, the rate of Chen towels, towels Chen number, width, audibility, pixel format; audio coding format, the encoder, the number of channels, sample rate, bit rate; select the appropriate transcoding of metadata according to strategy, into a form suitable network playback, audio and video files and is compatible with a variety of computer terminals, smart phones and tablet browsers such as direct play, the current mainstream video format MP4 and FLV, but FLV is currently the only support flash playback device does not support the smart phone and a tablet device, therefore, generally transcoded 1 ^ 4 format, required respectively for video encoding, audio encoding and container, transcoding is made H264 video coding + AAC audio encoding + mp4 container combined into MP4 file format; clip online users S: 30, the user can fast-forward of video and audio, rewind, frame by frame editing operation position to the fine-tuning, and the object descriptive letter 录入,包括剪辑后视频的标题、分类、年份、简介等;对象准确定位S40,采用流媒体增强型定位技术,用户进行音视频位置剪辑操作时,会自动插入I帧实现精准定位;剪辑关联Sf50,记录剪辑音视频的父音视频ID、开始时间、结束时间以及其他描述信息,通过ID号与父音视频建立关联关系,以便在播放时根据父音视频以及编辑信息,即可定位播放音视频。 Entry, including editing the video title, category, year, profile and the like; an object accurate positioning S40, streaming media enhanced positioning technology, users audio and video position of the clip operation, automatically inserts I-frames to achieve precise positioning; clip associated Sf50 , audio and video clips recorded audio and video of a parent ID, start time, end time, and other descriptive information, build relationships with the parent by the ID number of audio and video, according to the father of video and audio editing information, you can locate audio and video playback while playing .

[0037]图2所示为本发明实施例提供的一种音视频在线剪辑系统模块图。 [0037] As shown in a tone generating line video editing system block diagram according to an embodiment of the present invention, FIG. 整个系统基于B/S架构,包括三大模块:系统客户端M100,数据处理服务端M200,数据库服务器M300。 The whole system is based on B / S structure, comprising three modules: M100 client system, the data processing server the M200, M300 database server side.

[0038]其中系统客户端又由播放器M101和在线剪辑工具M102组成,数据处理服务端由音视频数据处理服务器M201和流媒体服务器M202组成。 [0038] in which the client system and the players M101 and M102 composed online editing tools, data processing services end by audio and video data processing servers M201 and M202 streaming media server components.

[0039]播放器实现对音视频的选择、播放,与流媒体服务器M202和音视频数据处理服务器M201进行数据交互,在播放阶段,播放器M101向音视频数据处理服务器M201请求虚拟音视频,得到虚拟音视频播放地址后,向流媒体服务器M202请求音视频播放,获得音视频流, 得以播放剪辑后的音视频;在剪辑阶段,通过播放器M101定位音视频处理对象,播放器M101 向流媒体服务器M202请求播放音视频对象。 [0039] Player realize selection of audio and video, playing, exchanging data with the streaming media server M202 and the audio and video data processing server M201, playback stage, the player M101 data processing to the audio and video server M201 requested virtual audio and video, to give a virtual after the audio and video playback address, to the streaming server M202 requested audio and video playback, to obtain audio and video streams to audio and video after playing the clip; the clip stage, through the player M101 positioning audio and video processing target player M101 to the streaming server M202 request to play audio and video objects.

[0040]音视频数据处理服务器M201,主要负责音视频对象及用户编辑数据的处理和上传,如获取音视频元数据、生成缩略图、码流等。 [0040] The audio and video data processing server M201, audio and video objects, and responsible for the user to edit and upload data to be processed, such as audio and video acquired metadata, generates a thumbnail, streams and the like.

[0041]流媒体服务器M202,以流式协议方式支持音视频播放,对音视频进行精准定位。 [0041] M202 streaming media server, to support the streaming audio and video playback agreement, precise positioning of the audio and video. [0042]数据库服务器M300,存储音视频及剪辑信息,如音视频元数据,图片、码流等,剪辑的开始结束时间,新视频标题等。 [0042] The database server M300, storing and editing audio and video information, such as audio and video metadata, pictures, stream, etc., clip start and end time, new video title, etc.

[0043] 如图3所示为本发明实施例提供的一种音视频在线剪辑系统音视频剪辑流程图, 用户点播音视频对象,播放器Ml 01请求流媒体服务器似〇2,流媒体服务器M2〇2返回音视频播放流给客户端M100供播放和剪辑,在线剪辑工具組〇2实现音视频的拖动、快进、快退、微调、设置标题、简介等信息的编辑,对音视频对象的位置剪辑操作会被提交给流媒体服务器M202,经流媒体服务器似〇2进行精准定位,计算剪辑位置的精确时间点后,与音视频对象的描述信息一起提交给音视频数据处理服务器[01,服务器M201根据需求处理编辑信息,将剪辑的音视频与父音视频的ID关联,存储到数据库服务器M300。 [0043] As shown in FIG. 3 〇2 present, a tone generating streaming server M2 provided in the online video editing system AVClip flowchart, the user-demand audio and video objects, the player requests the streaming server Ml 01 similar embodiment of the invention 〇2 return to play streaming audio and video to the client M100 for playback and editing, online editing tools group 〇2 achieve drag audio and video, fast forward, rewind, fine-tuning, setting edit the title, description and other information, audio and video objects the operation position of the clip will be submitted to the streaming media server M202, like for accurate positioning 〇2 via streaming media server, calculates the exact point of time after the clip position, submit information describing the audio and video object together with audio and video data to the processing server [01 , M201 server based on the associated edit information processing requirements, audio and video clips and audio and video of the parent ID, stored in the database server M300.

[0044] 如图4所示为本发明实施例提供的一种音视频在线剪辑系统虚拟剪辑播放流程图,用户通过播放器M101向音视频数据处理服务器把〇1请求播放剪辑后的音视频,音视频数据处理服务器M201去数据库服务器M300检索音视频信息,将特定格式的虚拟剪辑信息返回给播放器M101,播放器M101获得音视频播放地址相关信息,向流媒体服务器M202发送播放虚拟剪辑的请求,流媒体服务器脱02返回音视频流给播放器組01,实现虚拟剪辑的播放。 A tone generating-line video editing system provided in [0044] FIG embodiment of the present invention shown in FIG. 4 displays the virtual clip flowchart, the user through the player M101 audio and video data to the processing server request 〇1 after playing audio and video clips, audio and video data processing server M201 to the database server M300 retrieve audio and video information, returns the virtual clip information of a specific format to the player M101, player M101 obtained audio and video playback address information, sends a play the virtual clip to the streaming server M202 request streaming media server streaming audio and video off 02 returns to the player group of 01 players to achieve virtual clip.

Claims (2)

  1. 1.一种精准的音视频在线虚拟剪辑方法,其特征在于,包括: 步骤S10,音视频对象获取,确定待剪辑的音视频对象; 步骤S20,音视频对象转码,对视频编码、音频编码和容器进行转换,转码成由H264视频编码+AAC音频编码+mp4容器组合成的MP4文件格式; 步骤S30,用户在线剪辑,在浏览器中嵌入播放器及在线剪辑工具,供用户交互剪辑操作; —步骤S40,音视频对象准确定位,实现对关键帧、非关键帧的准确定位、标注,计算剪辑位置的精确时间点;并通过音视频元数据,采用流媒体增强型定位技术,计算定位帧的精确时间点;对于视频对象,在用户实现音视频的位置剪辑时,以动态插入I帧来实现精确定位; 步骤po,剪辑关联,剪辑后的音视频文件与父音视频文件根据音视频10信息,实现关联;在线到辑只是一种虚拟剪辑,剪辑后的数据以存入数据库,以父音 An accurate virtual clip AV-line method, characterized by comprising: a step S10, the acquisition of audio and video objects, video object is determined to be audio clip; step S20, the transcoding audio and video objects, video encoding, audio encoding and containers, transcoding is made H264 video coding AAC audio codec + mp4 container assembly into + MP4 file format; step S30, the users online editing, embedded player and online editing tools in the browser, for user interaction clip operations ; - step S40, the audio and video objects accurate positioning, to achieve accurate positioning key frame, non-key frames are denoted by calculating the exact point of time the clip position; through audio and video metadata, streaming media enhanced positioning technique, calculating a position the exact time of the frame; for video object, when the position of the clip the user to achieve audio and video, to dynamically insert I-frames to achieve precise positioning; step po, clip associated, the clipped audio and video files and the parent audio and video files according to the audio and video 10 information associated implement; only a series of online virtual clip, the clip to the data stored in the database, to the parent tone 频ID号与父音视频进行关联,实现音视频的虚拟剪辑; 自动获取音视频元数据,包括文件整体信息、视频轨数据和音频轨数据,其中,文件整体数据包括:时长、比特率、容器格式、其他信息;视频轨数据包括:视频编码格式、视频编码器、比特率、帧率、帧数、宽度、高度、像素格式;音频轨数据包括:音频编码格式、编码器、声道数、采样率、比特率; 在线剪辑包括拖动、快进、快退、按帧微调,同时还可以录入对象描述性信息,包括剪辑后视频的标题、标签、分类、人物、简介。 Frequency ID number and parent audio and video associated virtual clip of audio and video; automatic acquisition of audio and video metadata, including file General information, video track data and audio track data, wherein the file overall data comprises: duration, bit rate, the container format, additional information; video track data comprising: a video encoding format, the video encoder, bit rate, frame rate, number of frames, width, height, pixel format; audio track data comprises: an audio encoding format, the encoder, the number of channels, sampling rate, bit rate; clip includes a drag-line, fast forward, rewind, frame by trimming, but also the object can enter descriptive information, including the title of the video clip, label, classification, character, brief introduction.
  2. 2.—种精准的音视频在线虚拟剪辑系统,其特征在于,包括以下模块: 系统客户端M100,通过浏览器访问,负责音视频文件的播放、标注、剪辑; 数据处理服务端似00,负责对音视频对象及其剪辑数据的处理; 数据库服务器M300,存储音视频的数据信息,包括剪辑信息; 系统客户端M100包括:播放器M101和在线剪辑工具M102;用户通过播放器M101向音视频数据处理服务器似01请求播放剪辑后的音视频,音视频数据处理服务器M201去数据库服务器M300检索音视频信息,将特定格式的虚拟剪辑信息返回给播放器M10丨,播放器[^10丄获得音视频播放地址相关信息,向流媒体服务器M202发送播放虚拟剪辑的请求,流媒体服务器M202返回音视频流给播放器Ml 01,实现虚拟剪辑的播放; 在线剪辑工具Ml〇2可以实现对音视频按帧定位,同时添加音视频描述信息,并将数据提交到数 2.- kinds of precise audio and video clips online virtual system, characterized in that it comprises the following modules: system client M100, accessed through a browser, is responsible for audio and video files to play, tagging, editing; data processing services like end 00, is responsible for and processing audio and video clip data of the object; the M300 database server, storing audio and video data information, including clip information; M100 client system comprising: a player online editing tools M101 and M102; M101 using player data to the audio and video audio and video post-processing server like 01 request to play a clip, audio and video data processing server M201 to the database server M300 retrieve audio and video information, returns the virtual clip information of a specific format to the player M10 Shu, player [^ 10 Shang obtained audio and video play address request information, send virtual clip played to the streaming media server M202, M202 returns the streaming media server to stream audio and video player Ml 01, realized playing virtual clips; Ml〇2 online editing tools can achieve audio and video frame by frame positioning, audio and video while adding description information and data submitted to several 处理服务端M200; 数据处理服务端把00,实现对音视频对象以及音视频元数据的处理,包括: 音视频数据处理服务器M201,主要对音视频文件进行加工处理,同时还接受并处理剪辑工具提交的用户编辑数据以及流媒体服务器M202定位信息,经适当处理后,提交给数据库服务器M300存储; 流媒体服务器M202,主要以流式协议将音视频文件传送给客户端播放器,供用户在线观看;同时提供增强型定位技术,实现音视频的精准定位; 数据库服务器M300,存储音视频的相关数据和用户剪辑数据,其中音视频的相关数据包括:音视频名称、上传时间、语言、字幕、音视频码流信息、缩略图信息。 Processing server M200; data processing server to 00, implement the processing of audio and video objects as well as audio and video metadata, including: audio and video data processing server M201, mainly for audio and video files processing, while also accepting and processing editing tools user to edit data, and streaming media server M202 location information submitted after appropriate treatment, committed to the database server M300 stores; streaming media server M202, mainly streaming protocol to transfer audio and video files to the client player for users to watch online ; while providing enhanced positioning technology to achieve accurate positioning of audio and video; database server M300, data stored audio and video and user clip data, which data of audio and video include: audio and video name, upload time, language, subtitles, audio video stream information, thumbnail information.
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