WO2011113331A1 - 一种影片文件下载装置及方法 - Google Patents
一种影片文件下载装置及方法 Download PDFInfo
- Publication number
- WO2011113331A1 WO2011113331A1 PCT/CN2011/071747 CN2011071747W WO2011113331A1 WO 2011113331 A1 WO2011113331 A1 WO 2011113331A1 CN 2011071747 W CN2011071747 W CN 2011071747W WO 2011113331 A1 WO2011113331 A1 WO 2011113331A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- file
- module
- movie
- data
- downloading
- Prior art date
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8549—Creating video summaries, e.g. movie trailer
Definitions
- the invention relates to a film file processing technology, in particular to a film file downloading device and method. Background technique
- HTTP Hypertext Transfer Protocol
- FTP File Transfer Protocol
- BT Bit Comet
- ED2K eMule
- HTTP and FTP are traditional file transfer protocols.
- the BT and ED2K (eMule) protocols are emerging peer-to-peer (P2P, Peer-to-Peer) protocols.
- P2P is also known as peer-to-peer Internet technology.
- MMS and RTSP are streaming media transmission protocols for transmitting real-time media streams published by streaming media servers such as Windows Media.
- FIG 1 is a schematic diagram of the system architecture of the existing general download software, as shown in Figure 1, the network download module is based on the file. The file fragmentation information provided by the fragmentation module, and the file data is downloaded to a local file.
- the existing download software generally does not have a special processing for the movie file, but divides the movie file into equal divisions as the ordinary file (for example, 512 KB is a basic unit).
- the download client can download data pieces of different locations from multiple nodes in the node network at the same time, but this download mechanism will cause the downloaded data pieces to be discontinuous in the file location, and the video editing
- the principle of decoding is that it is not possible to play back discrete data blocks. Therefore, the traditional downloading software often needs to download the movie completely before it can be viewed. In this way, the user needs to wait for a long time, and can not pre-determine whether the content of the movie meets its own needs or preview the highlight of the movie in advance.
- the main object of the present invention is to provide a video file downloading apparatus and method, which can realize quick preview of movie content and avoid wasteful downloading time.
- a video file downloading device comprising a file parsing module, a file slicing module, a network downloading module, and a preview playing module, wherein
- a file parsing module configured to send a first indication to the network download module according to the downloaded video file type, receive the feature data from the download module, and obtain key frame position information of the movie file to be downloaded from the feature data, and the obtained The key frame position information is output to the file fragmentation module; and the second indication is sent to the network download module;
- a file fragmentation module configured to receive key frame position information from the file parsing module, segment the movie file according to the received key frame position information, and output the file fragmentation information to the network download module;
- a network downloading module configured to establish a network connection with the download server or the downloading node, for receiving the first indication, downloading the feature data of the file header and the file end; receiving the second indication, downloading according to the file fragmentation information from the file fragmentation module Film file data;
- the preview playing module is further configured to send a third indication to the network downloading module according to the data location being previewed for playing; correspondingly, the network downloading module is further configured to download the playing station according to the third instruction from the preview playing module. Required data.
- the network downloading module is further configured to store the downloaded file data into a local file.
- the network download module includes a P2P download mode, a sequential download mode, or a preview download mode.
- the preview playing module is specifically configured to sequentially play a key frame image in the downloaded movie file data.
- the preview playing module is further configured to sequentially play the movie by using the downloaded movie file data.
- a method for downloading a movie file comprising:
- the movie file data is downloaded according to the file segmentation information, and the downloaded movie file data is used for preview playback.
- the key frame location information of the movie file that needs to be downloaded includes:
- the feature data of the file header and the file end are downloaded, and the key frame position information of the movie file to be downloaded is obtained from the feature data.
- the method further includes: downloading the file data according to the data location being previewed for playback.
- the method further includes: sequentially playing key frame images in the downloaded movie file data.
- the method further includes: playing the movie sequentially using the downloaded movie file data.
- the file parsing module, the file slicing module, the network downloading module, and the preview playing module are included, and the file slicing module divides the video file according to the key frame position information parsed by the file parsing module.
- the network download module downloads the file data according to the file fragmentation information, and the preview playback module uses the downloaded file data to perform a quick preview of the movie content.
- FIG. 1 is a schematic diagram of a system architecture of an existing general download software
- FIG. 2 is a schematic structural diagram of a composition of a video file downloading apparatus of the present invention.
- FIG. 3 is a flow chart of a method for downloading a movie file of the present invention.
- Figure 4 is a schematic diagram showing the structure of an RMVB file. detailed description
- video coding frames include two types: I frames and P frames.
- An I frame is also called an intra reference frame or a key frame.
- the I frame only refers to the information in the image frame when encoding, so it can be independently decoded when decoding; and the P frame is also called the forward reference frame, and the frame is called When encoding, the information of the previous frame is referred to, so the frame of the previous frame is also required for decoding.
- a key frame is usually inserted as an I frame, and the rest is a frame. Thus, decoding can be started from the key frame position, and other forward reference frames are decoded in sequence.
- the key frame data Since the key frames can be decoded independently, the key frame data has a more important meaning in the movie file data.
- the position of the key frame data in the file is recorded in the structure description information of the movie file, and the present invention utilizes these key frame position information.
- the movie file is sliced, and the file data is downloaded according to the file segmentation information, and the downloaded file data is used to quickly preview the content of the movie. Help users quickly understand the summary content of the movie, as well as preview the pieces of interest in advance.
- Key file data is stored at regular intervals in the movie file.
- the time interval is T.
- the data size of a key frame is N times that of a non-key frame.
- the film frame rate is F. Then, in the movie file.
- the ratio of key frame data to non-key frame data is N: (T*F - 1 ), and * means multiplication.
- the key frame interval is 10 seconds
- the frame rate is 25 frames/second
- the key frame data size is 5 times that of the non-key frame.
- the ratio of key frame data to non-key frame data is about 1: 50. That is, you can quickly sample the video content by extracting about 2% of the key frame data.
- the sampled key frame data can be used to implement the preview playback of the present invention to help the user understand the summary content of the movie.
- FIG. 2 is a schematic structural diagram of a video file downloading apparatus of the present invention.
- the file parsing module is configured to send a first indication to the network downloading module according to the downloaded video file type, instructing the network downloading module to download the feature data of the file header and the file tail, and obtain the video file to be downloaded from the feature data.
- Key frame position information output the obtained key frame position information to the file fragmentation module; send a second indication to the network download module.
- the file fragmentation module is configured to receive key frame position information from the file parsing module, slice the movie file according to the received key frame position information, and output the file fragmentation information to the network download module.
- a network downloading module configured to establish a network connection with the download server or the downloading node, to receive the first indication, and the downloading module downloads the feature data of the file header and the file tail; receiving the second indication, according to the file fragmentation from the file fragmentation module Information download video file data. Further used to store the downloaded movie file data into a local file.
- Preview the playback module for preview playback using the downloaded movie file data is further configured to send a third indication to the network downloading module according to the data location being previewed for playing, instructing the network downloading module to preferentially download data required for playing.
- the network download module is also used The file data is downloaded in accordance with a third instruction from the preview play module.
- FIG. 3 is a flowchart of a method for downloading a movie file according to the present invention. As shown in FIG. 3, the method includes the following steps: Step 300: Obtain key frame position information of a movie file that needs to be downloaded.
- the step includes: downloading the feature data of the file header and the file end according to the type of the downloaded movie file, and obtaining the key frame position information of the movie file to be downloaded from the feature data.
- Step 301 Fragment the movie file according to the obtained key frame position information.
- Step 302 Download the movie file data according to the file fragmentation information, and use the downloaded movie file data to perform preview playback.
- the method of the present invention further comprises: downloading the file data according to the location of the data being previewed for playback.
- a general movie file consists of three parts, including the description of the file header ( HEAD ), the audio and video data ( DATA ) in the file, and the index data ( INDX ) at the end of the file.
- the description information and index data at the beginning and end of the file are generally short.
- the RMVB file has about 512 KB of header/tail data.
- the file parsing module sends a first indication to the network download module, and the network download module first downloads the data of the file header and the file tail.
- the length of the header and end data of different movie files is different, as shown in Table 1, so the length of the head and tail data that needs to be downloaded can be given based on the empirical value.
- the file parsing module will instruct the network download module. First download the 512KB data of the file header and the 512KB INDX data at the end of the file.
- the file parsing module will parse the key frame position information.
- the key frame position information of the file is recorded in the trailing INDX data. Therefore, for the movie file containing the INDX data, the file parsing module will parse the position information of the key frame, with RM VB as
- the parsing process generally includes:
- Figure 4 is a schematic diagram of the composition of the RMVB file, as shown in Figure 4, through the file header '.RMF, TROP', MDPR', 'CONT' (where '.RMF indicates that the file is in Real format File, 'PROP' indicates file attributes, 'MDPR' indicates media stream attributes, 'CONT' indicates file content description)
- '.RMF indicates that the file is in Real format File
- 'PROP' indicates file attributes
- 'MDPR' indicates media stream attributes
- 'CONT' indicates file content description
- indexRecord index record
- Each index record corresponds to the location information of a key frame, where ptrFilePos indicates that the key frame is in the absolute position in the file, tStart indicates the file time corresponding to the key frame, and packet indicates that there is a key frame from the key frame to the next key frame. How many packets are there.
- the file parsing module outputs the obtained index record list (IndexRecord List) to the file fragmentation module, and the file fragmentation module divides the file data block according to the key frame position, instead of being equal in length like the existing general downloader ( For example, 512KB) to segment the data block.
- the advantage of segmenting according to the key frame position is: Each of the basic units can be played independently.
- the specific implementation of the segmentation file has a plurality of methods, which are all technically used by those skilled in the art, and will not be described in detail.
- the present invention emphasizes that the file fragmentation module slices the movie file according to the key frame position.
- the file fragmentation module transmits the file fragmentation information to the network download module, and the network download module The block downloads the corresponding piece of data according to the file fragmentation information.
- the network download module can use three download modes: P2P download mode, sequential download mode, and preview download mode. among them,
- the P2P download mode can simultaneously download data slices at different locations from multiple download nodes at the same time, because the data slices at different locations are separated by key frame positions, so video decoding can decode these data slices, so that each data
- the films can be played independently, that is, the downloaded videos can be viewed without having to download the videos completely. The user does not need to wait for a long time to pre-determine whether the content of the videos meets their needs;
- the sequential download mode downloads the data pieces from beginning to end in chronological order
- the preview download mode preferentially downloads the first frame image data of each data piece.
- the first frame key frame data starting from the download of each data piece only accounts for about 2% of the total file length, so in the preview download mode.
- the preview playback module can start preview playback.
- the preview playback module can first provide a story slideshow function, and the story slideshow function can play the downloaded movie file data in a sequence of time intervals.
- the story slide allows the user to quickly understand the outline content of the entire movie.
- the story slide function is a common technical means by those skilled in the art, and the specific implementation is not used to limit the scope of the present invention.
- the downloaded key frame image is sequentially played at a certain time interval.
- the preview play module also provides a highlight preview function and a side-by-side broadcast function, wherein when the story slide is played to a scene of interest to the user, the user can click the play button to start watching the highlight from the position of the file,
- the preview play module sends a third indication to the network download module to instruct the network download module to preferentially download the data piece required for playback; and the side broadcast function can start from the beginning of the file, and sequentially download the data piece required for playback.
- the preview playback module can use this data to start a full movie playback.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Computer Security & Cryptography (AREA)
- Information Transfer Between Computers (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
- Studio Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012143717/07A RU2551111C2 (ru) | 2010-03-15 | 2011-03-11 | Устройство и способ загрузки файла с кинофильмом |
| SG2012066270A SG183571A1 (en) | 2010-03-15 | 2011-03-11 | Movie file download device and method |
| BR112012023304A BR112012023304A2 (pt) | 2010-03-15 | 2011-03-11 | dispositivo e método para transferência de arquivos de filmes |
| US13/610,255 US20130031219A1 (en) | 2010-03-15 | 2012-09-11 | Device And Method For Downloading Movie File |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010126062.9 | 2010-03-15 | ||
| CN201010126062.9A CN102196001B (zh) | 2010-03-15 | 2010-03-15 | 一种影片文件下载装置及方法 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/610,255 Continuation US20130031219A1 (en) | 2010-03-15 | 2012-09-11 | Device And Method For Downloading Movie File |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011113331A1 true WO2011113331A1 (zh) | 2011-09-22 |
Family
ID=44603387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/071747 Ceased WO2011113331A1 (zh) | 2010-03-15 | 2011-03-11 | 一种影片文件下载装置及方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20130031219A1 (zh) |
| CN (1) | CN102196001B (zh) |
| BR (1) | BR112012023304A2 (zh) |
| RU (1) | RU2551111C2 (zh) |
| SG (1) | SG183571A1 (zh) |
| WO (1) | WO2011113331A1 (zh) |
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| GB2489746A (en) * | 2011-04-08 | 2012-10-10 | Philip John Thorne | Streaming out of sequence frames for computer animation |
| CN104683416A (zh) * | 2013-12-02 | 2015-06-03 | 乐视网信息技术(北京)股份有限公司 | 一种p2p网络中数据下载方法及装置 |
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| CN102693313B (zh) * | 2012-05-24 | 2015-04-29 | 上海兴之邦进出口有限公司 | 商品供求信息检索方法 |
| TW201421985A (zh) * | 2012-11-23 | 2014-06-01 | Inst Information Industry | 場景片段傳輸系統、方法及記錄媒體 |
| US9530452B2 (en) | 2013-02-05 | 2016-12-27 | Alc Holdings, Inc. | Video preview creation with link |
| CN103368951B (zh) * | 2013-06-29 | 2017-02-22 | 广州市动景计算机科技有限公司 | 文件下载方法及系统 |
| US20150189365A1 (en) * | 2013-12-26 | 2015-07-02 | Thomson Licensing | Method and apparatus for generating a recording index |
| CN104980773B (zh) * | 2014-09-23 | 2019-12-13 | 腾讯科技(深圳)有限公司 | 一种流媒体处理方法、装置、终端及服务器 |
| CN105100961B (zh) * | 2015-07-23 | 2018-03-13 | 华为技术有限公司 | 视频缩略图生成方法及生成装置 |
| CN105338068B (zh) * | 2015-10-10 | 2018-10-26 | 天脉聚源(北京)教育科技有限公司 | 一种下载方法及装置 |
| CN105681894A (zh) * | 2016-01-04 | 2016-06-15 | 努比亚技术有限公司 | 显示视频文件的装置及方法 |
| CN105721945A (zh) * | 2016-02-02 | 2016-06-29 | 四川长虹电器股份有限公司 | 电视机在线播放局域网中iso镜像影片的方法 |
| GB2549323B (en) * | 2016-04-15 | 2022-06-15 | Grass Valley Ltd | Methods of distributing media files, and file distribution systems for distributing media files |
| CN109525622B (zh) * | 2017-09-19 | 2021-11-26 | 阿里巴巴集团控股有限公司 | 分片资源id的生成方法、资源分享方法,装置及电子设备 |
| US11349904B2 (en) * | 2019-04-03 | 2022-05-31 | Citrix Systems, Inc. | Selecting a mode of delivery to provide access to a file systems and methods |
| CN110213614B (zh) * | 2019-05-08 | 2021-11-02 | 北京字节跳动网络技术有限公司 | 从视频文件中提取关键帧的方法和装置 |
| CN110446118B (zh) * | 2019-07-01 | 2021-08-20 | 创新先进技术有限公司 | 视频资源预处理方法及装置、视频资源下载方法及装置 |
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- 2011-03-11 SG SG2012066270A patent/SG183571A1/en unknown
- 2011-03-11 WO PCT/CN2011/071747 patent/WO2011113331A1/zh not_active Ceased
- 2011-03-11 BR BR112012023304A patent/BR112012023304A2/pt not_active Application Discontinuation
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Also Published As
| Publication number | Publication date |
|---|---|
| SG183571A1 (en) | 2012-10-30 |
| US20130031219A1 (en) | 2013-01-31 |
| RU2551111C2 (ru) | 2015-05-20 |
| BR112012023304A2 (pt) | 2016-05-24 |
| CN102196001A (zh) | 2011-09-21 |
| RU2012143717A (ru) | 2014-04-27 |
| CN102196001B (zh) | 2014-03-19 |
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