CN105245945A - Method and system for playing network multimedia data - Google Patents
Method and system for playing network multimedia data Download PDFInfo
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Abstract
The invention relates to a method and a system for playing network multimedia data. The method comprises the steps of download playing and memory management. In the step of download playing, multimedia data from a download source is received and cached in a blocked mode, and the multimedia data is played; and in the step of memory management, timing monitoring or a deletion operation is carried out on the cached data amount according to a playing position when the data amount of cached multimedia data of a sub-block reaches a predetermined reference amount. The beneficial effects of the invention are that monitoring or deletion is carried out on the cached data amount while the multimedia data is downloaded and played, and a phenomenon of equipment blocking caused by too high memory occupation because of excessive caching is avoided. In addition, problems of repeated download and bandwidth waste possibly caused by a mode of deleting as soon as being watched through monitoring the data amount.
Description
Technical field
The present invention relates to multimedia transport technology field, be specifically related to a kind of player method of network multimedia data and a kind of Play System of network multimedia data.
Background technology
Growing along with network technology, uses the user of browser viewing video to get more and more.Player (such as flash script) obtains the http address of video file on webpage by the mechanism of agreement during displaying video, then send request, and download limit, limit is play, and the data of download are all kept in browser rs cache.Because a lot of video is the isometric video of film or TV play, the requirement of user to video definition is also more and more higher in addition, and it is increasing that these factors result in video file, also makes the requirement of browser rs cache more and more higher.User is when order video web site contents, if viewing video time is oversize, the video content stored is too many, and player (as flash player) EMS memory occupation can be caused too high, thus causes occurring that such as browser collapses, computer memory takies height and causes the problems such as equipment card pauses.
For evading these problems, prior art uses the method for long video segment, only downloads the content of this segmentation, and empty remaining all segmentation when being namely played to the video of a certain segmentation.Although data owing to downloading rear segment in advance can be reduced with the processing mode of deleting but the user's waste that segmentation may do not watched just to close video and cause with seeing this, but, its drawback is, when user pulls playing progress bar back and forth to search play position, Data duplication can be caused to download, cause bandwidth waste.
Summary of the invention
The invention provides player method and the system of the more appropriate network multimedia data of a kind of memory management.
According to a first aspect of the invention, the invention provides a kind of player method of network multimedia data, comprise the following steps:
Downloading and playing step: piecemeal receive and buffer memory from the multi-medium data of loading source, and to play;
Memory management step: when the data volume of the multi-medium data of the piecemeal of buffer memory reaches predetermined datum quantity, carries out timing according to play position to the data volume of buffer memory and monitors or carry out deletion action.
According to a second aspect of the invention, the invention provides a kind of Play System of network multimedia data, comprising:
Downloading and playing module, receive for piecemeal and buffer memory from the multi-medium data of loading source, and to play;
Memory management module, when the data volume for the multi-medium data of the piecemeal when buffer memory reaches predetermined datum quantity, monitors according to the data volume of play position to buffer memory or carries out deletion action.
The invention has the beneficial effects as follows: in broadcasting with while downloading, the data volume of buffer memory is monitored or deleted, avoiding being cached many and causing the equipment Caton phenomenon caused because EMS memory occupation is too high, being avoided with seeing the problem that may cause repeated downloads, waste bandwidth caused with the mode of deleting by monitor data amount in addition.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the player method of the network multimedia data of an embodiment of the present invention;
Fig. 2 is the structural representation of the Play System of the network multimedia data of an embodiment of the present invention;
Fig. 3 is the broadcasting of network multimedia data and the flow chart of download in a kind of example of the present invention.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
[embodiment 1]
As shown in Figure 1, according to one embodiment of the present invention, a kind of player method of network multimedia data is provided, comprises downloading and playing step S1 and memory management step S3.
Downloading and playing step S1: piecemeal receive and buffer memory from the multi-medium data of loading source, and to play.
In the present embodiment, the mode adopting piecemeal request also to store preserves data, and such block data both can facilitate download to upload, and also facilitated memory management.Such as the video of 1073841824 byte ≈ 1G is evenly divided into the piecemeal of size 262144 byte=256K, is divided into altogether 4097 pieces, before 4096 pieces of every block sizes be 262144 byte=256K, last block is 100000 bytes.
Memory management step S3: when the data volume of the multi-medium data of the piecemeal of buffer memory reaches predetermined datum quantity, carries out timing according to play position to the data volume of buffer memory and monitors or carry out deletion action.Particularly, step S3 comprises the steps S31 ~ S34.
Step S31, judges whether the data volume of buffer memory reaches predetermined datum quantity, if not, then performs downloading and playing step S1, if so, then performs step S32.Here, predetermined datum quantity is setting in advance, can be empirical value, such as suppose that computer memory is 1G, in browser downloads and displaying video time, cause equipment card to pause for not taking too much internal memory as far as possible, the internal memory that can set about 1/3rd is used for browser rs cache and uses.
Step S32, judges whether the data volume of the buffer memory from play position reaches predetermined amount to be broadcast, if so, then performs step S33, if not, then perform step S34.Here, predetermined amount to be broadcast refers to the multimedia data volume needing in the scheduled time to play from play position, and this value can be the empirical value of setting in advance.
Step S33, suspends downloading and playing step S1, turn-on data amount timing monitoring, namely timing judges the data volume of the buffer memory from play position, if this data volume is less than predetermined minimum playback volume, then restart downloading and playing step S1, otherwise proceed timing judgement.Here, predetermined minimum playback volume refers to the multimedia data volume that in the scheduled time, minimum needs are play from play position, and this value can be the empirical value preset.
Step S34, continue to receive and buffer memory from the multi-medium data of loading source, and carry out deletion action according to this predetermined datum quantity, this deletion action specifically comprises: the multi-medium data deleting the piecemeal from the file header of multi-medium data to play position by block successively, often perform and once delete, judge whether the data volume after deleting is greater than predetermined datum quantity, if not, then stop deleting, if, then continue to delete until stop when play position is in next piecemeal to be deleted, and the multi-medium data of remaining buffer memory is judged, if the data volume of the multi-medium data of this remaining buffer memory is greater than predetermined datum quantity, then delete the data from the end-of-file of multi-medium data to play position successively by block, until the data volume of multi-medium data of buffer memory after deleting is no more than predetermined datum quantity.
The present embodiment is in broadcasting with while downloading, the data volume of buffer memory is monitored or deleted, the video data that guarantee only to download the short time in advance needs when timing monitoring is used for ensureing smooth playing, even can be used for providing P2P to upload in P2P program request technology, and do not download from broadcast point too away from user may the data that can not watch, thus server bandwidth can be saved; And, by to how many judgements of data volume rationally downloading and storage data, avoid being cached many and causing the equipment Caton phenomenon caused because EMS memory occupation is too high, the long video file realizing low EMS memory occupation is play, improve bandwidth availability ratio, bring more smooth video viewing experience to user, even can ensure that higher P2P shares rate in P2P program request technology.Obviously, this method of the present embodiment also can be a kind of memory management optimization method being applied to FlashP2P program request technology.
[embodiment 2]
As shown in Figure 2, according to one embodiment of the present invention, a kind of Play System 100 of network multimedia data is provided, comprises downloading and playing module 10 and memory management module.Downloading and playing module 10 receive for piecemeal and buffer memory from the multi-medium data of loading source, and to play; Memory management module is used for when the data volume of the multi-medium data of the piecemeal of buffer memory reaches predetermined datum quantity, monitors according to the data volume of play position to buffer memory or carries out deletion action.
Particularly, memory management module comprises the first data volume judging unit 31, second data volume judging unit 32, timing monitoring unit 33 and buffer memory delete cells 34.
First data volume judging unit 31, for judging whether the data volume of buffer memory reaches predetermined datum quantity, if not, then triggers and performs downloading and playing module 10, if so, then trigger the second data volume judging unit 32.
Second data volume judging unit 32 is for judging whether the data volume of buffer memory from play position reaches predetermined amount to be broadcast, predetermined amount to be broadcast is the multimedia data volume needing in the scheduled time to play from play position, if, then suspend downloading and playing module 10, and trigger timing monitoring unit 33, if not, then buffer memory delete cells 34 is triggered.
Timing monitoring unit 33 is for carrying out data volume timing monitoring according to predetermined amount to be broadcast, particularly, timing monitoring unit 33 comprises the first timing judgment sub-unit, for timing, the data volume of the buffer memory from play position is judged, if this data volume is less than predetermined minimum playback volume, then restart downloading and playing module 10, otherwise proceed timing judgement.
Buffer memory delete cells 34 for continue to receive and buffer memory from the multi-medium data of loading source, and carry out deletion action according to described predetermined datum quantity, buffer memory delete cells 34 comprises the first deletion and judgment sub-unit and the second deletion and judgment sub-unit.First deletion and judgment sub-unit are used for the multi-medium data deleting the piecemeal from the file header of described multi-medium data to play position by block successively, often perform and once delete, judge whether the data volume after deleting is greater than predetermined datum quantity, if not, then stop deleting, if so, then continue to delete until stop when play position is in next piecemeal to be deleted, and trigger the second deletion and judgment sub-unit; Second deletion and judgment sub-unit are used for judging the multi-medium data of remaining buffer memory, if the data volume of the multi-medium data of remaining buffer memory is greater than predetermined datum quantity, then delete the data from the end-of-file of multi-medium data to play position successively by block, until the data volume of multi-medium data of buffer memory after deleting is no more than predetermined datum quantity.
The modules related in above-mentioned Play System, the implementation procedure of unit with reference to the correlation step of method in previous embodiment 1, can not repeat at this.
Fig. 3 describes the Play System of the network multimedia data of the present embodiment and the flow process of broadcasting and method for down loading thereof in detail by a complete citing, wherein getting predetermined datum quantity data is 300M, predetermined amount to be broadcast is continuous 100 number of seconds certificates, predetermined minimum playback volume is continuous 60 number of seconds certificates, and timer monitoring period is 10 seconds.Steps flow chart lists in Fig. 3 in detail, repeats no more herein.In the example of fig. 3:
A. often downloaded a block data, then calculate the video size of preserving in internal memory, according to aforementioned division, every block block data size is all 256K, and simple plus-minus just can calculate.For example, an internal memory critical value 300M is set, when the video data preserved in internal memory reaches 300M, and the data downloaded smooth playing of continuous 100 seconds after can meeting current playing point, then stop request msg.
If b. internal memory has reached the data of 300M, but not yet download to the data in 100 seconds after broadcast point, then still request msg, but in order to maintain the memory size of 300M, need to delete some data, the deletion principle that one embodiment of the invention provides is that deleted file head, to the data of current playing point position, then judges whether to exceed 300M first successively, if still exceed 300M, then successively deleted file tail to the data of current playing point position.Delete procedure follows the principle retaining 300M data.
C. the internal memory in a reaches critical value, during stopping request msg, the timer at setting 10 seconds interval checks function, along with the broadcasting of video, timer function judged buffer data size every 10 seconds, when to determine after current playing point can the data of Continuous Play be less than 60 seconds time, again start the process of request downloading data.
To sum up, known according to embodiments of the present invention, network multimedia data downloads data cached according to partitioned mode, monitor internal storage state simultaneously, judge whether to reach critical data amount (as foregoing embodiments 300M), at any time according to internal storage data amount and downloaded the subsequent video play length notice download module whether continue download, and suitably adjustment is carried out to maintain critical data amount to the data in internal memory, and during stopping downloading according to the feedback of memory management module when downloading, can the data in timing audit memory meet the smooth playing of scheduled duration, if not, notice download module restarts download.The present invention not only P2P to share rate higher, and when playing large files video, memory management is more appropriate, plays the large-capacity video being greater than 1G, also only accounts for a small amount of internal memory.
It will be appreciated by those skilled in the art that, in above-mentioned execution mode, all or part of step of various method can be carried out instruction related hardware by program and completes, this program can be stored in a computer-readable recording medium, and storage medium can comprise: read-only memory, random asccess memory, disk or CD etc.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made.
Claims (8)
1. a player method for network multimedia data, is characterized in that, comprises the following steps:
Downloading and playing step: piecemeal receive and buffer memory from the multi-medium data of loading source, and to play;
Memory management step: when the data volume of the multi-medium data of the piecemeal of buffer memory reaches predetermined datum quantity, carries out timing according to play position to the data volume of buffer memory and monitors or carry out deletion action.
2. the method for claim 1, is characterized in that, described memory management step comprises:
Judge whether the data volume of buffer memory reaches predetermined datum quantity, if not, then perform described downloading and playing step,
If, then judge whether the data volume of the buffer memory from play position reaches predetermined amount to be broadcast, described predetermined amount to be broadcast is the multimedia data volume needing in the scheduled time to play from play position, if, then suspend downloading and playing step, turn-on data amount timing monitoring, if not, then continue to receive and buffer memory from the multi-medium data of loading source, and carry out deletion action according to described predetermined datum quantity.
3. method as claimed in claim 2, is characterized in that, described in carry out timing and monitor and comprise:
Timing judges the data volume of the buffer memory from play position, if this data volume is less than predetermined minimum playback volume, then restarts downloading and playing step, otherwise proceeds timing judgement.
4. method as claimed in claim 2, is characterized in that, describedly carries out deletion action according to described predetermined datum quantity and comprises:
The multi-medium data of the piecemeal from the file header of described multi-medium data to play position is deleted successively by block, often perform and once delete, judge whether the data volume after deleting is greater than predetermined datum quantity, if not, then stop deleting, if so, then continue to delete until stop when play position is in next piecemeal to be deleted, and the multi-medium data of remaining buffer memory is judged
If the data volume of the multi-medium data of described remaining buffer memory is greater than predetermined datum quantity, then delete the data from the end-of-file of described multi-medium data to play position successively by block, until the data volume of multi-medium data of buffer memory after deleting is no more than predetermined datum quantity.
5. a Play System for network multimedia data, is characterized in that, comprising:
Downloading and playing module, receive for piecemeal and buffer memory from the multi-medium data of loading source, and to play;
Memory management module, when the data volume for the multi-medium data of the piecemeal when buffer memory reaches predetermined datum quantity, monitors according to the data volume of play position to buffer memory or carries out deletion action.
6. system as claimed in claim 5, is characterized in that, described memory management module comprises the first data volume judging unit, the second data volume judging unit, timing monitoring unit and buffer memory delete cells,
Described first data volume judging unit, for judging whether the data volume of buffer memory reaches predetermined datum quantity, if not, then triggers and performs described downloading and playing module, if so, then trigger the second data volume judging unit,
Described second data volume judging unit is for judging whether the data volume of buffer memory from play position reaches predetermined amount to be broadcast, described predetermined amount to be broadcast is the multimedia data volume needing in the scheduled time to play from play position, if, then suspend downloading and playing module, and trigger timing monitoring unit, if not, then buffer memory delete cells is triggered
Described timing monitoring unit is used for carrying out data volume timing monitoring according to described predetermined amount to be broadcast;
Described buffer memory delete cells for continue to receive and buffer memory from the multi-medium data of loading source, and carry out deletion action according to described predetermined datum quantity.
7. system as claimed in claim 6, it is characterized in that, described timing monitoring unit comprises the first timing judgment sub-unit, for timing, the data volume of the buffer memory from play position is judged, if this data volume is less than predetermined minimum playback volume, then restart described downloading and playing module, otherwise proceed timing judgement.
8. system as claimed in claim 6, is characterized in that, buffer memory delete cells comprises the first deletion and judgment sub-unit and second is deleted and judgment sub-unit,
Described first deletion and judgment sub-unit are used for the multi-medium data deleting the piecemeal from the file header of described multi-medium data to play position by block successively, often perform and once delete, judge whether the data volume after deleting is greater than predetermined datum quantity, if not, then stop deleting, if so, then continue to delete until stop when play position is in next piecemeal to be deleted, and trigger described second deletion and judgment sub-unit;
Described second deletion and judgment sub-unit are used for judging the multi-medium data of remaining buffer memory, if the data volume of the multi-medium data of described remaining buffer memory is greater than predetermined datum quantity, then delete the data from the end-of-file of described multi-medium data to play position successively by block, until the data volume of multi-medium data of buffer memory after deleting is no more than predetermined datum quantity.
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| CN201410320558.8A CN105245945A (en) | 2014-07-07 | 2014-07-07 | Method and system for playing network multimedia data |
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| CN201410320558.8A CN105245945A (en) | 2014-07-07 | 2014-07-07 | Method and system for playing network multimedia data |
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| CN108415667A (en) * | 2018-01-31 | 2018-08-17 | 惠州华阳通用电子有限公司 | A kind of audio file loading method |
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Application publication date: 20160113 |