CN103024604B - Device and method used for realizing seamless connection of ts files - Google Patents

Device and method used for realizing seamless connection of ts files Download PDF

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CN103024604B
CN103024604B CN 201210585788 CN201210585788A CN103024604B CN 103024604 B CN103024604 B CN 103024604B CN 201210585788 CN201210585788 CN 201210585788 CN 201210585788 A CN201210585788 A CN 201210585788A CN 103024604 B CN103024604 B CN 103024604B
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video
audio
segment
ts
file
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CN103024604A (en )
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王少刚
阙宏宇
姚键
潘柏宇
卢述奇
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合一网络技术(北京)有限公司
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Abstract

本发明提供了一种用于实现ts文件无缝连接的装置及方法,该装置包括:用于解析分段视频并计算每一分段视频的视频时长和音频时长的转码模块;记录每一分段视频的视频时长和音频时长的数据库;用于累计分段视频时长和音频时长的生成视频列表格式文件模块;动态ts文件生成模块,用于将其中的每一视频帧和音频帧的时间戳要加上累计的在先分段视频的视频时长和音频时长。 The present invention provides an apparatus and method for seamless file ts achieved, the apparatus comprising: means for parsing the video segment and calculates the length of the video and audio each segment of video transcoding module time length; each record long segment when the video and audio and video databases long; long time for the video segment accumulated duration video and audio generation module list format; ts dynamic file generation module for each video frame time, and wherein the audio frame long time stamp to be added to the accumulated video segment preceding the video and audio duration. 该方法包括:转码步骤,用于解析分段视频并计算每一分段视频的视频时长和音频时长;将每一分段视频的视频时长和音频时长记录在数据库中;累计分段视频时长和音频时长;将ts文件中的每一视频帧和音频帧的时间戳要加上累计的在先分段视频的视频时长和音频时长。 The method comprising: when transcoding step for parsing the video segment and calculates the length of the video and audio each video segment length; video segment in each video recorded in a database when a long duration, and audio; video segment accumulated duration audio and long time; a time stamp to each video frame and the audio frame ts file to add the accumulated video segment preceding the video and audio long duration.

Description

一种用于实现ts文件无缝连接的装置及方法 Ts an apparatus and method for realizing seamless connection file

技术领域 FIELD

[0001] 本发明涉及网络视频领域,尤其是涉及一种用于实现ts文件无缝连接的装置及方法。 [0001] The present invention relates to the field of video network, in particular apparatus and method ts document relates to a seamless connection realized.

背景技术 Background technique

[0002] 上网用浏览器看视频的用户越来越多,其中很多视频是电影或者电视剧等长视频,而且用户对视频清晰度的要求也越来越高。 [0002] Internet browser to see the video more and more users, many of the video is a movie or TV series such as long video, and user requirements for increasingly high-definition video. 这些导致视频文件越来越大,对浏览器缓存的要求越来越高。 These lead to more and more video files, browser cache requirements of the increasingly high. 如果是http方式下载视频,用户拖拽和没看完视频造成带宽的浪费也不少。 If the video is http download, the user drags and Mo Kanwan video caused a lot of bandwidth waste. 因此多数视频网站都采取对视频进行分片的方式来解决这个问题。 So most video sites take the form of video fragments to solve this problem.

[0003] 一个视频切成几个视频,播放器在处理不同片连接的时候,会有短时间停顿现象。 [0003] A video cut into several video player when dealing with different connecting pieces, there will be a short pause phenomenon. 一般看室内剧可能注意不到这个现象,但是对于动作片和音乐,用户会有明显的感觉,降低了用户体验。 Generally do indoor theater may not notice this phenomenon, but for action movies and music, users will have clear sense of reducing the user experience.

[0004] 苹果公司采用了Iivestream技术,是把一个视频切成6-7分钟的多个小段,一个小段再动态分割为20s-30s左右的ts文件,即首先根据文件格式规范得到视频帧(一个压缩图片)和音频帧(一组音频采样,通常为1024个采样);按顺序分成多个组(每一组包括不定长时间的视频帧和音频帧);对每一组按照ts文件规范生成一个ts文件,播放时浏览器按照ts文件规范把这些文件动态组合成一个视频文件的技术。 [0004] Apple uses a Iivestream technology, is cut into a plurality of small pieces to a video 6-7 minutes, then a dynamic divided into small pieces of about 20s-30s ts files, i.e., video frame is first obtained according to a file format specification (a compressed pictures) and audio frames (one set of audio samples, typically 1024 samples); sequentially divided into groups (each group including the indefinite time video and audio frames); each group in accordance with the generated file specification ts a file ts, ts playback file browser in accordance with specifications of these technical documents are combined into a dynamic video file. 这样虽然是播放多个ts文件,但是因为浏览器解析ts文件,得到视频帧和音频帧,按顺序把多个ts文件合并为一个序列,就像分析一个文件一样,所以不会有短时停顿的现象。 Although this document is to play multiple ts, ts but because the browser parses the file to obtain video frames and audio frames, in order to more ts files into one sequence, just like the analysis as a file, so there will be a short pause The phenomenon.

[0005] 因此分段视频的每一段分成多个ts文件,并针对每一帧标记播放时间戳,如果分段连接处在ts文件上能做到无缝连接,就可以避免短时停顿现象。 [0005] Thus each segment of the video segment into a plurality of files ts, and time stamp for each frame marker player, if the segment can be done seamlessly connected in a file on ts, a short pause phenomenon can be avoided.

[0006]目前视频网站对于ts文件的生成有两种处理模式。 [0006] For the current generation video site ts files There are two processing modes. 一种是静态生成ts文件,预先生成后存储到硬盘存储器,需要的时候直接调取,这种方式实现ts无缝连接很简单,缺点是造成cdn内容分发系统的存储成倍增加。 - a static file generating ts, after the previously stored to generate a hard disk memory, direct retrieval when needed, such a manner is very simple ts seamless connection, the disadvantage is caused by the storage of the content distribution system cdn multiplied. 另一种处理方式是动态生成ts文件,即在请求的时候ts文件不存在,根据IS013818规范临时生成,用后删除,因为苹果浏览器对时间戳(时间戳是用于标记视频帧和音频帧应该在多少秒的时候播放。例如一个视频(25fps)的第250个视频帧要在第10秒播放,它的时间戳应该就设置为10s,下一个视频帧的时间戳就应设置为1s又40ms)要求比较严格,也就是说视频帧和对应音频帧的时间戳要求一致,因此没有做成无缝连接。 Another approach is to dynamically generate documents ts, namely ts file does not exist at the time of the request, in accordance with IS013818 specification temporarily generated, deleted after use, because Apple browser timestamp (timestamp is used to mark a video frame and an audio frame in how many seconds should be played when for example a video (25fps) video frames of the first 250 in 10 seconds to play, it should timestamp is set to 10s, the next time stamp on the video frame should be set to 1s and 40ms) more stringent requirements, i.e. a time stamp corresponding to a video frame and audio frame consistent with the requirements, and therefore a seamless connection is not made.

[0007] 通常一个视频是由多个分段视频(例如000.flv,001.fIv,002.flv等)组成的。 [0007] The video segment is typically a video (e.g. 000.flv, 001.fIv, 002.flv etc.) consisting of a plurality. 每一个flv文件中视频帧和音频帧的时间戳都是从O开始的。 Each file flv video frames and audio frames are time stamps from O began. 放在一起播放,播放器要求时间戳是递增的,因此需要修改时间戳。 Put together to play, the player is required timestamp increments, so you need to modify timestamp. 在修改001.flv对应的ts文件时,需要把时间戳加上000.flv文件的时间长度。 When modifying 001.flv ts corresponding file, plus the length of time required 000.flv time stamp file. 目前,简单地多加Is保证时间戳递增,这样在000.flv结束、 Currently, Is simply to pay more to ensure that the timestamp increment, so 000.flv end,

001.flv开始的时候,时间戳变化不平滑,导致观看的时候有停顿跳跃的感觉。 001.flv start time, the time stamp changes are not smooth, leading to watch when feeling standstill jump.

发明内容 SUMMARY

[0008] 为解决上述技术问题,本发明提供了一种用于实现ts文件无缝连接的装置,该装置包括: [0008] In order to solve the above technical problem, the present invention provides an apparatus for implementing ts files seamlessly connected, the apparatus comprising:

[0009] 转码模块,用于解析分段视频并计算每一分段视频的视频时长和音频时长; [0009] transcoding module, for parsing the video segment and calculating the long duration of each video and audio of the video segment;

[0010] 数据库,记录每一分段视频的视频时长和音频时长; [0010] database, records the audio and long duration time of each video segment of the video;

[0011] 生成视频列表格式文件模块,生成视频列表格式文件时,累计分段视频时长和音频时长; [0011] generate a video file list format module, generating a list of video format, the video segment accumulated long duration, and audio;

[0012] 动态ts文件生成模块,生成ts文件时,其中的每一视频帧和音频帧的时间戳要加上累计的在先分段视频的视频时长和音频时长。 Long duration when audio and [0012] ts file generating module dynamically generates ts files, wherein each time stamp of the video frames and audio frames accumulated prior to add a video segment of the video.

[0013] 进一步,该装置包括:分段模块,在对视频进行分段时,每一分段视频的音频长于视频,但是差值不超过一音频帧时长。 When segmentation module length, when the video segments, each segment of video is longer than the video audio, but the difference is not more than one audio frame: [0013] Further, the apparatus comprising

[0014] 进一步,数据库只记录每一分段视频的视频时长或音频时长,从而能够进行相互间的推导计算。 [0014] Further, the database only when a long duration of each segment of video or audio recording of the video, it is possible to calculate the mutual derivation.

[0015] 进一步,所述生成视频列表格式文件模块在生成视频列表格式文件时去掉表示相邻两个ts文件无关联的字段。 [0015] Further, the list format file module generates the video when generating video file format list to remove ts represents two adjacent fields unrelated files.

[0016] 本发明还提供了一种用于实现ts文件无缝连接的方法,该方法包括: [0016] The present invention further provides a method for realizing seamless connection ts file, the method comprising:

[0017] 转码步骤,用于解析分段视频并计算每一分段视频的视频时长和音频时长; [0017] The transcoding step, long duration, and parsing the audio and video segments of each video segment is calculated for the video;

[0018] 将每一分段视频的视频时长和音频时长记录在数据库中; [0018] The length of each video segment and a long-time video recording in the audio database;

[0019] 生成视频列表格式文件,并累计分段视频时长和音频时长; [0019] generate a video file list format, long time duration, and audio and video segment accumulated;

[0020] 生成ts文件,其中的每一视频帧和音频帧的时间戳要加上累计的在先分段视频的视频时长和音频时长。 [0020] ts files generated, wherein each video frame and the audio frame to add time stamps accumulated video segment preceding the video and audio long duration.

[0021] 进一步,该方法包括:分段步骤,在对视频进行分段时,每一分段视频的音频长于视频,但是差值不超过一音频帧时长。 [0021] Further, the method comprising: a segmentation step length, when the video segments, each segment is longer than the video audio and video, but the difference is not more than one audio frames.

[0022] 进一步,数据库只记录每一分段视频的视频时长或音频时长,从而能够进行相互间的推导计算。 [0022] Further, the database only when a long duration of each segment of video or audio recording of the video, it is possible to calculate the mutual derivation.

[0023] 进一步,所述在生成视频列表格式文件时去掉表示相邻两个ts文件无关联的字段。 [0023] Further, when generating the list of video file formats remove ts represents two adjacent fields unrelated files.

附图说明 BRIEF DESCRIPTION

[0024] 图1是根据本发明的装置的示意图。 [0024] FIG. 1 is a schematic diagram of apparatus according to the invention.

[0025] 图2是根据本发明的方法的流程图。 [0025] FIG 2 is a flowchart of a method according to the invention.

具体实施方式 detailed description

[0026] 为使本发明的上述目的、特征和优点更加明显易懂,下面结合附图和具体实施方式对本发明作进一步详细的说明: [0026] For the above-described objects, features and advantages of the present invention will become apparent from the following the present invention will be further described in detail in conjunction with accompanying drawings and specific embodiments:

[0027] 本发明提供了一种在动态生成ts文件时能够实现无缝连接的技术方案。 [0027] The present invention provides a dynamically generated at the time ts file being able to realize seamless connection.

[0028] 在视频分段时,分析可以得到每一分段的视频时长和音频时长,记录到数据库中。 Long, when recorded in the database [0028] When the video segment, each segment can be analyzed in the audio and video length. 在生成视频列表格式m3u8文件时(视频由一个以m3u8为后缀的文本文件加上一群小的ts文件构成。m3u8文件里面是这些小的ts文件的urI地址,也就是说m3u8文件是多个ts文件的地址列表,一个视频对应一个m3u8文件),对每一个ts文件增加两个请求参数,分别为前面ts文件对应的视频总时长和音频总时长,现实中一个flv分段视频会生成多个ts文件。 When generating a list format m3u8 video file (video files which constitute .m3u8 by the group plus a small m3u8 ts file to a text file suffix is ​​urI address these small ts file, that file is more m3u8 ts address list file, a video file corresponding to a m3u8), two additional parameters for the request file for each ts, ts files respectively corresponding to the front of the audio and video are total length, in reality will generate a plurality of video segments flv ts files. 本例子简化成一个flv分段视频只有一个ts文件。 Present a simplified example, only one video segment flv ts file. 用ts_seg_video和ts_seg_aud1标记如面视频的视频累积时长和音频累积时长。 And with long ts_seg_video ts_seg_aud1 surface marker such as video and video accumulated long accumulation audio.

[0029] pifu04_000.flv 是第一个,ts_seg_video 和ts_seg_aud1 对应的都是O ;pifu04_001.flv是第二个分段文件,对应的是第一个文件的时长,ts_seg_video和ts_seg_aud1都是13s ;pifu04_002.flv是第三个分段文件,对应的是第一个和第二个文件的时长之和,为ts_seg_video=41333ms,ts_seg_aud1=41333ms。 [0029] pifu04_000.flv first, ts_seg_video and corresponding ts_seg_aud1 are O; pifu04_001.flv file is the second segment, corresponds to the duration of the first file, ts_seg_video are ts_seg_aud1 and 13s; pifu04_002. flv files is the third segment, the corresponding first and second files and the length of time for ts_seg_video = 41333ms, ts_seg_aud1 = 41333ms. 这样服务器在动态生成ts文件时,ts文件中的视频帧和音频帧的时间戳都加上这两个输入参数(所述时间戳在未加入这两个参数之前的播放时间是依照该视频帧或音频帧在ts文件中的位置来决定的,也就是说,ts文件的第一个视频帧的时间戳为0,而根据视频帧率和音频帧率,也就是可以计算每一视频帧时长和音频帧的每一帧的时长,从而可以计算后续视频帧和音频帧的时间戳),就可以实现无缝连接了。 Thus when the server dynamically generated files ts, ts file time stamps of video frames and audio frames are coupled with the two input parameters (the playback time stamp is not added until the two parameters are in accordance with the video frame ts or the audio frames in the file location is determined, that is, the time stamp of the first video frame ts file is 0, and according to a video frame rate and audio frame rate, i.e. the time may be calculated for each video frame length and the duration of each frame of the audio frame, which can calculate the timestamp of the subsequent video frames and audio frames), can be seamlessly connected.

[0030] 在特殊条件下,这个算法还可以进一步的优化。 [0030] Under specific conditions, this algorithm can be further optimized.

[0031] 例如,假设数据库只记录了每一分段的视频时长,在进行分段时视频音频有特殊的对应关系(比如音频肯定大于等于视频,但是不会超过一音频帧的时长),这样只增加一个参数,对生成ts文件的服务器进行预先设置也可以保证无缝连接。 [0031] For example, assume that the database records only the duration of each segment of video, audio and video special segment during a correspondence relationship (such as audio video certainly greater than or equal, but does not exceed the duration of an audio frame), so an increase of only one parameter, the file server will be generated ts may be set in advance to ensure seamless connection.

[0032] 需要注意的是,做无缝连接时,m3u8文件要去掉原来的EXT-X-DISCONTINUITY字段,不然还是有短时停顿现象。 [0032] It should be noted, do seamless connection, m3u8 file to remove the original EXT-X-DISCONTINUITY field, we still have a short pause phenomenon. 该字段表示相邻两个ts文件无关联。 This field represents two ts files not associated with a neighbor.

[0033] 如图1所示,根据本发明的装置共有四大模块: [0033] As shown in FIG. 1, the device according to the invention a total of four modules:

[0034] 1.转码模块:解析分段视频并计算每一分段视频的视频时长和音频时长(优选地,分段模块按特殊约定进行分段,也就是音频长于视频,但是差值不超过一音频帧时长)。 [0034] 1. transcoding module: parsing the video segment and calculating the length (preferably, the segmentation module segmenting by special agreement audio and video duration of each video segment, which is longer than the video audio, but the difference is not more than one audio frame duration).

[0035] 2.数据库:记录每一分段视频的视频时长和音频时长。 [0035] 2. Database: logs the duration of each video segment length video and audio.

[0036] 3.生成m3u8文件模块:生成m3u8文件时,累计分段视频时长和音频时长。 [0036] 3. m3u8 file generation module: generating m3u8 files, video accumulated segment duration and time length of the audio. 例如,累计前一分段、前两个分段、前三个分段…以此类推。 For example, a total front segment, the first two sections, the first three sections and so on ....

[0037] 4.动态ts文件生成模块:生成ts文件时,其中的每一视频帧和音频帧的时间戳要加上上述请求参数。 [0037] 4. Dynamic ts file generating module: generating ts files, wherein each time stamp of video frames and audio frames to add to the request parameter.

[0038] 该装置进一步包括:分段模块,在对视频进行分段时,每一分段视频的音频长于视频,但是差值不超过一音频帧时长。 [0038] The apparatus further comprising: a segmentation module, when the video segments, each segment is longer than the video audio and video, but the difference is not more than one audio frame duration.

[0039] 如图2所示,根据本发明的该方法包括:转码步骤,用于解析分段视频并计算每一分段视频的视频时长和音频时长;存储步骤,将每一分段视频的视频时长和音频时长记录在数据库中;生成m3u8文件步骤,累计分段视频时长和音频时长;生成ts文件步骤,ts文件中的每一视频帧和音频帧的时间戳要加上累计的在先分段视频的视频时长和音频时长。 [0039] As shown, the method according to the present invention comprises: a long transcoding step for parsing the video segment and calculates the length of the video and audio each segment when the video; a storage step of each video segment duration generating m3u8 file step, the accumulated segment video length and audio;; video are recorded in a database when long and audio generation ts files step, the timestamp of each video frame and audio frame ts file to add cumulative in when the first video segment long duration video and audio.

[0040] 该方法进一步包括:分段步骤,在对视频进行分段时,每一分段视频的音频长于视频,但是差值不超过一音频帧时长。 [0040] The method further comprising: segmentation step, when the video segments, each segment is longer than the video audio and video, but the difference is not more than one audio frame duration.

[0041] 本发明获得的技术效果是:用苹果设备播放分片视频不会在分片点有短时停顿现象了。 [0041] The technical effect obtained by the invention are: apple slice video playback equipment will not be a short pause phenomenon of fragmentation in point.

[0042] 以上是对本发明的优选实施例进行的详细描述,但本领域的普通技术人员应该意识到,在本发明的范围内和精神指导下,各种改进、添加和替换都是可能的。 [0042] The above is a detailed description of the preferred embodiments carried out the invention, but those of ordinary skill in the art will be appreciated that, within the scope and spirit of the present invention under the guidance of various modifications, additions and substitutions are possible. 这些都在本发明的权利要求所限定的保护范围内。 These are within the scope of the claims of the present invention is defined.

Claims (8)

  1. 1.一种用于实现ts文件无缝连接的装置,其特征在于该装置包括: 转码模块,用于解析分段视频并计算每一分段视频的视频时长和音频时长; 数据库,记录每一分段视频的视频时长和音频时长; 生成视频列表格式文件模块,生成视频列表格式文件时,累计分段视频时长和音频时长; 动态ts文件生成模块,生成ts文件时,其中ts文件中的每一视频帧和音频帧的时间戳要加上累计的在先分段视频的视频时长和音频时长。 An apparatus for implementing ts files seamlessly connected, characterized in that the apparatus comprising: a long transcoding module, for parsing the video segment and calculates the length of the video and audio each video segment; database, each record long a segmented video video duration and audio; generating video list format file module, generating a video list format file, long duration, and audio the accumulated segment of video; dynamically ts file generating module generates ts file, wherein the ts file long duration and the audio time stamp to each video frame and the audio frame to be coupled with the accumulated video segment preceding the video.
  2. 2.根据权利要求1所述的装置,其特征在于该装置进一步包括: 分段模块,在对视频进行分段时,每一分段视频的音频长于视频,但是差值不超过一音频帧时长。 When segmentation module length, when the video segments, each segment is longer than the video audio and video, but the difference is not more than one audio frame: 2. The apparatus according to claim 1, characterized in that the apparatus further comprises .
  3. 3.根据权利要求2所述的装置,其特征在于: 数据库只记录每一分段视频的视频时长或音频时长,从而能够进行相互间的推导计笪并ο 3. The apparatus according to claim 2, wherein: the database when the audio duration or length of each segment of the video record only video, thereby enabling to derive the count Da and mutual ο
  4. 4.根据权利要求1所述的装置,其特征在于: 所述生成视频列表格式文件模块在生成视频列表格式文件时去掉表示相邻两个ts文件无关联的字段。 4. The apparatus according to claim 1, wherein: said module generates a video file list format when generating the list of video file formats remove ts represents two adjacent fields unrelated files.
  5. 5.一种用于实现ts文件无缝连接的方法,其特征在于该方法包括: 转码步骤,用于解析分段视频并计算每一分段视频的视频时长和音频时长; 将每一分段视频的视频时长和音频时长记录在数据库中; 生成视频列表格式文件,并累计分段视频时长和音频时长; 生成ts文件,其中ts文件中的每一视频帧和音频帧的时间戳要加上累计的在先分段视频的视频时长和音频时长。 A method for the realization of seamless file ts, characterized in that the method comprising: transcoding step for parsing the video segment and calculating the length and duration of each audio video segments of the video; of each fraction videos video are recorded in a database when long and audio; generating video list format, and the accumulated segment long duration and audio and video; generating ts file, where ts file each video time stamps frames and audio frames to be added long duration and when the integrated audio video segment preceding the video.
  6. 6.根据权利要求5所述的方法,其特征在于该方法进一步包括: 分段步骤,在对视频进行分段时,每一分段视频的音频长于视频,但是差值不超过一音频帧时长。 6. The method according to claim 5, characterized in that the method further comprises: when the segmentation step, when the video segments, each segment is longer than the video audio and video, but the difference is not longer than one audio frame .
  7. 7.根据权利要求6所述的方法,其特征在于: 数据库只记录每一分段视频的视频时长或音频时长,从而能够进行相互间的推导计笪并ο 7. The method according to claim 6, wherein: the database when the audio duration or length of each segment of the video record only video, thereby enabling to derive the count Da and mutual ο
  8. 8.根据权利要求5所述的方法,其特征在于: 所述在生成视频列表格式文件时去掉表示相邻两个ts文件无关联的字段。 8. The method as claimed in claim 5, wherein: said list format when generating video files remove ts represents two adjacent fields unrelated files.
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