CN102868909B - MP4 online video caching method and device - Google Patents
MP4 online video caching method and device Download PDFInfo
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Abstract
The invention provides a kind of MP4 Online Video caching method and device, wherein, described method comprises: the different URL of S1, the same MP4 video request of identification expression; S2, analyze described URL, and extract the original position of MP4 video playback; S3, according to described URL and described original position, send HTTP response message to client; S4, from described HTTP response message, extract the data that described URL and described original position obtain, to read local MP4 video file, reconstruct the MP4 video file sent to client.The present invention can allow needed the video data of the MP4 form obtained by network egress repeatability directly to obtain from home server originally, alleviated the burden of network egress, reduced the consumption of the network bandwidth, flow, and had saved the cost of operation.
Description
[technical field]
The present invention relates to networking technology area, particularly relate to a kind of MP4 Online Video caching method and device.
[background technology]
Because Flash plug-in unit can play MP4 video file, in order to enable user watch HD video under the limited network bandwidth, the Online Video file of a lot of Online Video website adopts MP4 file format at present.As long as browser supports that Flash just can play the MP4 video of high definition.So MP4 video becomes the Online Video form of current main flow.
MP4 video data demand is general all larger, and is all much repeated data for user, and this brings great burden to the network egress of user, consumes the network bandwidth, also consumes the flow of network, add the cost of operation.
[summary of the invention]
In order to solve the problem, the invention provides a kind of MP4 Online Video caching method and device, this MP4 Online Video caching method and device can detect analyzes Online Video URL feature, and according to the characteristic sum MP4 file format of URL, parsing, buffer memory, reconstruct MP4 video data.
Concrete technical scheme is as follows:
A kind of MP4 Online Video caching method of an embodiment of the present invention, comprising:
The different URL of S1, the same MP4 video request of identification expression;
S2, analyze described URL, and extract the original position of MP4 video playback;
S3, according to described URL and described original position, send HTTP response message to client;
S4, from described HTTP response message, extract the data that described URL and described original position obtain, to read local MP4 video file, reconstruct the MP4 video file sent to client.
As a further improvement on the present invention, described S1 step specifically comprises:
S11, monitoring network packet, capture the HTTP request of MP4 video;
S12, according to feature database, extract the characteristic that mark MP4 video features in URL is unique;
S13, described characteristic reassembled into an inner URL mark, and calculate MD5 value, described MD5 value identifies unique MP4 video file.
As a further improvement on the present invention, described S2 step specifically comprises:
S21, monitoring network packet, capture the HTTP request of MP4 video;
S22, extract in URL the field being used for identifying original position;
S23, according to video website information, confirm that described original position is initial play position in initial reproduction time or MP4 video file;
If the initial reproduction time of S24, then described reproduction time is converted to initial play position in MP4 video file.
As a further improvement on the present invention, described " described reproduction time being converted to initial play position in MP4 video file " step specifically comprises:
S241, the stss box resolved in MP4 head data, obtain the sample id that key frame is corresponding;
S242, the stsc box resolved in MP4 head data, obtain the distribution situation of video sample in video chunk, in conjunction with described sample id, obtain the chunk id of key frame;
S243, the stco box resolved in MP4 head data, obtain each chunk deviation post hereof, in conjunction with described chunk id, obtain chunk position hereof, key frame place;
S244, the stsz box resolved in MP4 head data, obtain the size of each sample, in conjunction with sample id, chunk id, chunk position hereof, key frame place, obtain key frame position hereof;
S245, the stts box resolved in MP4 head data, obtain the reproduction time of each sample, in conjunction with sample id, obtain the reproduction time value that key frame is corresponding;
S246, by key frame position hereof and reproduction time value one_to_one corresponding corresponding to key frame, obtain the reproduction time value of key frame and its initial play position in MP4 video file corresponding.
As a further improvement on the present invention, described " reconstructing the MP4 video file sent to client " specifically comprises:
The unique URL mark of MP4 video file of S41, acquisition, inquires about local URL index;
S42, judge whether local MP4 video file exists;
If S43 does not exist, then obtain MP4 video file from public network, and be sent to client;
If S44 exists, then according to unique URL mark of MP4 video file, read local MP4 video file;
S45, calculate the original position value of corresponding MP4 video file according to the data of file header;
S46, according to the original position value of MP4 video file obtained, read local MP4 video file, and merge with MP4 file header, regenerate an interim MP4 video file.
A kind of MP4 Online Video buffer storage of an embodiment of the present invention, comprising:
Recognition unit, for identifying the different URL representing same MP4 video request;
Analytic unit, for analyzing described URL, and extracts the original position of MP4 video playback;
Response unit, for according to described URL and described original position, sends HTTP response message to client;
Reconfiguration unit, for extracting the data that described URL and described original position obtain from described HTTP response message, to read local MP4 video file, reconstructs the MP4 video file sent to client.
As a further improvement on the present invention, described recognition unit also for:
Monitor network packet, capture the HTTP request of MP4 video;
According to feature database, the characteristic that the mark MP4 video features in extraction URL is unique;
Described characteristic is reassembled into an inner URL mark, and calculate MD5 value, the MP4 video file that described MD5 value mark is unique.
As a further improvement on the present invention, described analytic unit also for:
Monitor network packet, capture the HTTP request of MP4 video;
Extract in URL the field being used for identifying original position;
According to video website information, confirm that described original position is initial play position in initial reproduction time or MP4 video file;
If initial reproduction time, then described reproduction time is converted to initial play position in MP4 video file.
As a further improvement on the present invention, described analytic unit also for:
Resolve the stss box in MP4 head data, obtain the sample id that key frame is corresponding;
Resolve the stsc box in MP4 head data, obtain the distribution situation of video sample in video chunk, in conjunction with described sample id, obtain the chunk id of key frame;
Resolve the stco box in MP4 head data, obtain each chunk deviation post hereof, in conjunction with described chunk id, obtain chunk position hereof, key frame place;
Resolve the stsz box in MP4 head data, obtain the size of each sample, in conjunction with sample id, chunk id, chunk position hereof, key frame place, obtain key frame position hereof;
Resolve the stts box in MP4 head data, obtain the reproduction time of each sample, in conjunction with sample id, obtain the reproduction time value that key frame is corresponding;
By key frame position hereof and reproduction time value one_to_one corresponding corresponding to key frame, obtain the reproduction time value of key frame and its initial play position in MP4 video file corresponding.
As a further improvement on the present invention, described reconfiguration unit also for:
The unique URL mark of the MP4 video file obtained, inquires about local URL index;
Judge whether local MP4 video file exists;
If do not exist, then obtain MP4 video file from public network, and be sent to client;
If exist, then according to unique URL mark of MP4 video file, read local MP4 video file;
The original position value of corresponding MP4 video file is calculated according to the data of file header;
According to the original position value of the MP4 video file obtained, read local MP4 video file, and merge with MP4 file header, regenerate an interim MP4 video file.
As can be seen from the above technical solutions, the present invention can allow needed the MP4 video data obtained by network egress repeatability directly to obtain from home server originally, alleviate the burden of network egress, reduce the consumption of the network bandwidth, flow, and save the cost of operation.
[accompanying drawing explanation]
Fig. 1 is the flow chart of an embodiment of the present invention MP4 Online Video caching method;
Fig. 2 is the flow chart of S1 concrete steps in an embodiment of the present invention;
Fig. 3 is the flow chart of S2 concrete steps in an embodiment of the present invention;
Fig. 4 is the flow chart to the conversion of Online Video reproduction time in an embodiment of the present invention;
Fig. 5 is the flow chart to Online Video data reconstruction in an embodiment of the present invention;
Fig. 6 is the module diagram of an embodiment of the present invention MP4 Online Video buffer storage.
[embodiment]
In order to make the object, technical solutions and advantages of the present invention clearly, describe the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, in one embodiment of the present invention, described MP4 Online Video caching method comprises:
The different URL of S1, the same MP4 video request of identification expression;
S2, analyze described URL, and extract the original position of MP4 video playback;
S3, according to described URL and described original position, send HTTP response message to client, obtain MP4 video file to allow client from home server;
S4, from described HTTP response message, extract the data that described URL and described original position obtain, to read local MP4 video file, reconstruct the MP4 video file sent to client.Preferably, local MP4 video file is by providing HTTP to serve to Intranet user, accepts the MP4 Online Video request of Intranet, and sends request to outer net that downloading data obtains.The MP4 video stream file of this being asked first is stored in this locality; For follow-up identical MP4 video request provides service.
As shown in Figure 2, in one embodiment of the present invention, described S1 step specifically comprises:
S11, monitoring network packet, capture the HTTP request of MP4 video; Preferably, by the tagged manner of DFA deep layer bag detecting and alarm, the MP4 video request message based on http protocol is identified, to judge that whether Intranet user is in request MP4 video stream file;
S12, according to feature database, extract the characteristic that mark MP4 video features in URL is unique;
S13, described characteristic reassembled into an inner URL mark, and calculate MD5 value, described MD5 value identifies unique MP4 video file.
As shown in Figure 3, in one embodiment of the present invention, described S2 step specifically comprises:
S21, monitoring network packet, capture the HTTP request of MP4 video; Preferably, by the tagged manner of DFA deep layer bag detecting and alarm, the MP4 video request message based on http protocol is identified, to judge that whether Intranet user is in request MP4 video stream file;
S22, extract in URL the field being used for identifying original position;
S23, according to video website information, confirm that described original position is initial play position in initial reproduction time or MP4 video file;
If the initial reproduction time of S24, then described reproduction time is converted to initial play position in MP4 video file.
As shown in Figure 4, in one embodiment of the present invention, described " described reproduction time being converted to initial play position in MP4 video file " step specifically comprises:
S241, the stss box resolved in MP4 head data, obtain the sample id that key frame is corresponding;
S242, the stsc box resolved in MP4 head data, obtain the distribution situation of video sample in video chunk, in conjunction with described sample id, obtain the chunk id of key frame;
S243, the stco box resolved in MP4 head data, obtain each chunk deviation post hereof, in conjunction with described chunk id, obtain chunk position hereof, key frame place;
S244, the stsz box resolved in MP4 head data, obtain the size of each sample, in conjunction with sample id, chunk id, chunk position hereof, key frame place, obtain key frame position hereof;
S245, the stts box resolved in MP4 head data, obtain the reproduction time of each sample, in conjunction with sample id, obtain the reproduction time value that key frame is corresponding;
S246, by key frame position hereof and reproduction time value one_to_one corresponding corresponding to key frame, obtain the reproduction time value of key frame and its initial play position in MP4 video file corresponding.
As shown in Figure 5, in one embodiment of the present invention, described " reconstructing the MP4 video file sent to client " specifically comprises:
The unique URL mark of MP4 video file of S41, acquisition, inquires about local URL index;
S42, judge whether local MP4 video file exists;
If S43 does not exist, then obtain MP4 video file from public network, and be sent to client;
If S44 exists, then according to unique URL mark of MP4 video file, read local MP4 video file;
S45, calculate the original position value of corresponding MP4 video file according to the data of file header;
S46, according to the original position value of MP4 video file obtained, read local MP4 video file, and merge with MP4 file header, regenerate an interim MP4 video file.
As shown in Figure 6, in one embodiment of the present invention, described MP4 Online Video buffer storage comprises:
Recognition unit, for identifying the different URL representing same MP4 video request;
Analytic unit, for analyzing described URL, and extracts the original position of MP4 video playback;
Response unit, for according to described URL and described original position, sends HTTP response message to client, obtains MP4 video file to allow client from home server;
Reconfiguration unit, for extracting the data that described URL and described original position obtain from described HTTP response message, to read local MP4 video file, reconstructs the MP4 video file sent to client.Preferably, local MP4 video file is by providing HTTP to serve to Intranet user, accepts the MP4 Online Video request of Intranet, and sends request to outer net that downloading data obtains.The MP4 video stream file of this being asked first is stored in this locality; For follow-up identical MP4 video request provides service.
Preferably, in one embodiment of the present invention, described recognition unit also for:
Monitor network packet, capture the HTTP request of MP4 video; Preferably, by the tagged manner of DFA deep layer bag detecting and alarm, the MP4 video request message based on http protocol is identified, to judge that whether Intranet user is in request MP4 video stream file;
According to feature database, the characteristic that the mark MP4 video features in extraction URL is unique;
Described characteristic is reassembled into an inner URL mark, and calculate MD5 value, the MP4 video file that described MD5 value mark is unique.
Preferably, in one embodiment of the present invention, described analytic unit also for:
Monitor network packet, capture the HTTP request of MP4 video; Preferably, by the tagged manner of DFA deep layer bag detecting and alarm, the MP4 video request message based on http protocol is identified, to judge that whether Intranet user is in request MP4 video stream file;
Extract in URL the field being used for identifying original position;
According to video website information, judge that described original position is initial reproduction time, or initial play position in MP4 video file;
If initial reproduction time, then described reproduction time is converted to initial play position in MP4 video file;
If play position, then obtain corresponding video data.
Described analytic unit also for:
Resolve the stss box in MP4 head data, obtain the sample id that key frame is corresponding;
Resolve the stsc box in MP4 head data, obtain the distribution situation of video sample in video chunk, in conjunction with described sample id, obtain the chunk id of key frame;
Resolve the stco box in MP4 head data, obtain each chunk deviation post hereof, in conjunction with described chunk id, obtain chunk position hereof, key frame place;
Resolve the stsz box in MP4 head data, obtain the size of each sample, in conjunction with sample id, chunk id, chunk position hereof, key frame place, obtain key frame position hereof;
Resolve the stts box in MP4 head data, obtain the reproduction time of each sample, in conjunction with sample id, obtain the reproduction time value that key frame is corresponding;
By key frame position hereof and reproduction time value one_to_one corresponding corresponding to key frame, obtain the reproduction time value of key frame and its initial play position in MP4 video file corresponding.
Preferably, in one embodiment of the present invention, described reconfiguration unit also for:
The unique URL mark of the MP4 video file obtained, inquires about local URL index;
Judge whether local MP4 video file exists;
If do not exist, then obtain MP4 video file from public network, and be sent to client;
If exist, then according to unique URL mark of MP4 video file, read local MP4 video file;
The original position value of corresponding MP4 video file is calculated according to the data of file header;
According to the original position value of the MP4 video file obtained, read local MP4 video file, and merge with MP4 file header, regenerate an interim MP4 video file.
Known by describing above, the present invention can allow needed the video data of the MP4 form obtained by network egress repeatability directly to obtain from home server originally, alleviate the burden of network egress, reduce the consumption of the network bandwidth, flow, and save the cost of operation.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing the application.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add required general hardware platform by software and realizes.Based on such understanding, the technical scheme of the application can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each execution mode of the application or execution mode.
Device embodiments described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The application can be used in numerous general or special purpose computing system environment or configuration.Such as: personal computer, server computer, handheld device or portable set, laptop device, multicomputer system, system, set top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer, the distributed computing environment (DCE) comprising above any system or equipment etc. based on microprocessor.
The application can describe in the general context of computer executable instructions, such as program module.Usually, program module comprises the routine, program, object, assembly, data structure etc. that perform particular task or realize particular abstract data type.Also can put into practice the application in a distributed computing environment, in these distributed computing environment (DCE), be executed the task by the remote processing devices be connected by communication network.In a distributed computing environment, program module can be arranged in the local and remote computer-readable storage medium comprising memory device.
Be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each execution mode also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility execution mode of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (2)
1. a MP4 Online Video caching method, is characterized in that, described MP4 Online Video caching method comprises the following steps:
The different URL of S1, the same MP4 video request of identification expression,
Described S1 step specifically comprises:
S11, monitoring network packet, capture the HTTP request of MP4 video;
S12, according to feature database, extract the characteristic that mark MP4 video features in URL is unique;
S13, described characteristic reassembled into an inner URL mark, and calculate MD5 value, described MD5 value identifies unique MP4 video file;
S2, analyze described URL, and extract the original position of MP4 video playback,
Described S2 step specifically comprises:
S21, monitoring network packet, capture the HTTP request of MP4 video;
S22, extract in URL the field being used for identifying original position;
S23, according to video website information, confirm that described original position is initial play position in initial reproduction time or MP4 video file;
If the initial reproduction time of S24, then described reproduction time is converted to initial play position in MP4 video file,
Described " described reproduction time being converted to initial play position in MP4 video file " step specifically comprises:
S241, the stss box resolved in MP4 head data, obtain the sample id that key frame is corresponding;
S242, the stsc box resolved in MP4 head data, obtain the distribution situation of video sample in video chunk, in conjunction with described sample id, obtain the chunk id of key frame;
S243, the stco box resolved in MP4 head data, obtain each chunk deviation post hereof, in conjunction with described chunk id, obtain chunk position hereof, key frame place;
S244, the stsz box resolved in MP4 head data, obtain the size of each sample, in conjunction with sample id, chunk id, chunk position hereof, key frame place, obtain key frame position hereof;
S245, the stts box resolved in MP4 head data, obtain the reproduction time of each sample, in conjunction with sample id, obtain the reproduction time value that key frame is corresponding;
S246, by key frame position hereof and reproduction time value one_to_one corresponding corresponding to key frame, obtain the reproduction time value of key frame and its initial play position in MP4 video file corresponding;
S3, according to described URL and described original position, send HTTP response message to client;
S4, from described HTTP response message, extract the data that described URL and described original position obtain, to read local MP4 video file, reconstruct the MP4 video file sent to client,
Described " reconstructing the MP4 video file sent to client " specifically comprises:
The unique URL mark of MP4 video file of S41, acquisition, inquires about local URL index;
S42, judge whether local MP4 video file exists;
If S43 does not exist, then obtain MP4 video file from public network, and be sent to client;
If S44 exists, then according to unique URL mark of MP4 video file, read local MP4 video file;
S45, calculate the original position value of corresponding MP4 video file according to the data of file header;
S46, according to the original position value of MP4 video file obtained, read local MP4 video file, and merge with MP4 file header, regenerate an interim MP4 video file.
2. a MP4 Online Video buffer storage, is characterized in that, described MP4 Online Video buffer storage comprises:
Recognition unit, for identifying the different URL representing same MP4 video request,
Described recognition unit also for:
Monitor network packet, capture the HTTP request of MP4 video;
According to feature database, the characteristic that the mark MP4 video features in extraction URL is unique;
Described characteristic is reassembled into an inner URL mark, and calculate MD5 value, the MP4 video file that described MD5 value mark is unique;
Analytic unit, for analyzing described URL, and extracts the original position of MP4 video playback,
Described analytic unit also for:
Monitor network packet, capture the HTTP request of MP4 video;
Extract in URL the field being used for identifying original position;
According to video website information, confirm that described original position is initial play position in initial reproduction time or MP4 video file,
Described analytic unit also for:
Resolve the stss box in MP4 head data, obtain the sample id that key frame is corresponding;
Resolve the stsc box in MP4 head data, obtain the distribution situation of video sample in video chunk, in conjunction with described sample id, obtain the chunk id of key frame;
Resolve the stco box in MP4 head data, obtain each chunk deviation post hereof, in conjunction with described chunk id, obtain chunk position hereof, key frame place;
Resolve the stsz box in MP4 head data, obtain the size of each sample, in conjunction with sample id, chunk id, chunk position hereof, key frame place, obtain key frame position hereof;
Resolve the stts box in MP4 head data, obtain the reproduction time of each sample, in conjunction with sample id, obtain the reproduction time value that key frame is corresponding;
By key frame position hereof and reproduction time value one_to_one corresponding corresponding to key frame, obtain the reproduction time value of key frame and its initial play position in MP4 video file corresponding;
If initial reproduction time, then described reproduction time is converted to initial play position in MP4 video file;
Response unit, for according to described URL and described original position, sends HTTP response message to client;
Reconfiguration unit, for extracting the data that described URL and described original position obtain from described HTTP response message, to read local MP4 video file, reconstructs the MP4 video file sent to client,
Described reconfiguration unit also for:
The unique URL mark of the MP4 video file obtained, inquires about local URL index;
Judge whether local MP4 video file exists;
If do not exist, then obtain MP4 video file from public network, and be sent to client;
If exist, then according to unique URL mark of MP4 video file, read local MP4 video file;
The original position value of corresponding MP4 video file is calculated according to the data of file header;
According to the original position value of the MP4 video file obtained, read local MP4 video file, and merge with MP4 file header, regenerate an interim MP4 video file.
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| CN201210291180.4A CN102868909B (en) | 2011-10-17 | 2012-08-16 | MP4 online video caching method and device |
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| CN201110314334 | 2011-10-17 | ||
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| CN201210291180.4A CN102868909B (en) | 2011-10-17 | 2012-08-16 | MP4 online video caching method and device |
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| CN104301806B (en) * | 2014-09-11 | 2017-11-24 | 华为技术有限公司 | Video frequency identifying method, device and system |
| CN104301743B (en) * | 2014-09-11 | 2018-02-23 | 华为技术有限公司 | Transmit method, gateway device and the Video transmission system of video |
| CN104703027B (en) | 2015-03-17 | 2018-03-27 | 华为技术有限公司 | The coding/decoding method and device of frame of video |
| CN105141638B (en) * | 2015-09-29 | 2018-08-03 | 北京奇艺世纪科技有限公司 | A kind of method for down loading and device of video resource |
| US10547876B2 (en) * | 2017-02-08 | 2020-01-28 | Nanning Fugui Precision Industrial Co., Ltd. | Video cache rule generation system and method |
| CN110049037B (en) * | 2019-04-15 | 2021-12-14 | 兰州理工大学 | Network video data acquisition method based on data link layer |
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| US8683066B2 (en) * | 2007-08-06 | 2014-03-25 | DISH Digital L.L.C. | Apparatus, system, and method for multi-bitrate content streaming |
| WO2011066691A1 (en) * | 2009-12-04 | 2011-06-09 | Streamocean, Inc. | System and method to deliver multimedia content for display through network |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 301-302, 3rd Floor, Tiancheng Information Building, No. 88 South Tiancheng Road, High Speed Rail New City, Xiangcheng District, Suzhou City, Jiangsu Province, 215133 Patentee after: SUZHOU MAXNET NETWORK SAFETY TECHNOLOGY Co.,Ltd. Address before: 215021 International Science and Technology Park Phase III 8B, No. 1355 Jinjihu Avenue, Industrial Park, Suzhou City, Jiangsu Province Patentee before: SUZHOU MAXNET NETWORK SAFETY TECHNOLOGY Co.,Ltd. |