CN108174280A - A kind of online playback method of audio and video and system - Google Patents
A kind of online playback method of audio and video and system Download PDFInfo
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- CN108174280A CN108174280A CN201810047220.8A CN201810047220A CN108174280A CN 108174280 A CN108174280 A CN 108174280A CN 201810047220 A CN201810047220 A CN 201810047220A CN 108174280 A CN108174280 A CN 108174280A
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- 239000012634 fragment Substances 0.000 claims description 86
- 101100534231 Xenopus laevis src-b gene Proteins 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 5
- 238000009877 rendering Methods 0.000 claims description 4
- 101100058681 Drosophila melanogaster Btk29A gene Proteins 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000013467 fragmentation Methods 0.000 description 5
- 238000006062 fragmentation reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
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Classifications
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- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
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- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4335—Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions
-
- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44012—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving rendering scenes according to scene graphs, e.g. MPEG-4 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
- H04N21/83—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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of online playback method of audio and video and systems, when receiving switching clarity instruction, realize that a variety of clarity videos are downloaded simultaneously by multithreading, it ensure that the normal play of current clarity also completes the loading of target sharpness, realize the function of seamless switching clarity.It is currently playing to avoid stopping, re-creating and plays blank screen waiting phenomenon existing for example, improves the viewing experience of user.
Description
Technical field
The present invention relates to online play-back technology, the online playback method of particularly a kind of audio and video and system.
Background technology
As Internet video resource blowout increases, people are increasingly enhanced for watching the demand of video online, however by
The reasons such as user bandwidth, experience are limited, a video council produces the film source of a variety of clarity, meets the viewing demand of different user.
Equally occur as soon as the demand that user switches clarity.
Existing switching mode, needs to terminate currently playing, re-creates broadcasting example, navigates to the continuation of switching time point
It plays.There are the following problems for this method：Player is re-created, this is a heavyweight operation, it may appear that blank screen frame-skipping etc.
Phenomenon；Secondly it is that user waits for the result is that playing failure when the situation for new establishment player failure occur.This switching mode
User experience is bad.
Invention content
The technical problems to be solved by the invention are, in view of the shortcomings of the prior art, providing a kind of audio and video side of broadcasting online
Method and system realize video seamless switching clarity in playing process, the operation for re-creating broadcasting example are avoided to occur black
Screen and the situation of frame-skipping.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of online playback method of audio and video, packet
Include following steps：
1）A certain clarity src1 is selected to play video；
2）The burst information of current clarity video file is obtained, download current clarity video file and carries out rendering broadcasting；
3）Switching command is triggered, obtains and transmits target sharpness src2 parameter informations；
4）Judge whether to get target sharpness video slicing information, if so, entering step 5）；Otherwise, 7 are entered step）；
5）According to the current play time of triggering switching command, current clarity video end time and target sharpness are calculated
The video time started, while current clarity video and target sharpness video are downloaded, current clarity video is set to terminate to mark
Know；
6）Decoder is reset according to the end of identification, abandons the audio and video number of the clarity src2 Chong Die with clarity src1
According to；
7）Play the audio, video data downloaded.
Step 2）In, after the burst information for obtaining current clarity video file, parse the fragment letter of the video file
Breath, according to the duration and sequence of each fragment, calculates the start and end time of corresponding fragment, and the rope of settling time
Draw, store the index in the form of key-value pair, the index is for the fragment position where positioning and inquiring some time；Institute
It states in key-value pair, at the beginning of key is each fragment, value contains end time and the request address of fragment.
Step 3）In, when equipment checks that network state changes or user triggers switching command, then described in execution
Trigger the operation of switching command.
Step 3）In, target sharpness src2 parameter informations include target sharpness video slicing address, and triggering switching refers to
The current play time of order.
Step 5）In, calculate the specific reality of current clarity video end time and target sharpness video time started
Existing process includes：
1）It is obtained from the switching command and preserves current reproduction time；
2）Pull the fragment index file of src1 and the fragment index file of src2；
3）Using current reproduction time, the fragment index file of src1 is inquired, fragment i is searched, makes current reproduction time position
At the beginning of fragment i between the end time, according to the information of fragment i, the end time t1 of the fragment is obtained（Work as
The preceding clarity video end time）；The fragment index file of src2 is inquired, fragment j is searched, the t1 times is made to be located at opening for fragment j
Begin between time and end time, according to the information of fragment j, obtain t2 at the beginning of fragment j；
4）The setting target sharpness video time started is t2.
Step 5）In, it downloads target sharpness video specific implementation process and includes：According under the target sharpness video
Carry time started t2, from the outset between for t2 fragment download target sharpness video.
The specific operation process of current clarity video end of identification is set to include：If point of current clarity video file
The piece end of message time is less than or equal to t1, represents that the data of src1 download completion not yet, continues to download and poll detects；If
The burst information end time of current clarity video file is more than t1, stops downloading, and is added in the run-out of the fragment where t1
End of identification is downloaded and is completed, the fragment data downloaded after fragment where deleting t1.
Correspondingly, the present invention also provides a kind of online play system of audio and video, including：
Download module, for downloading current clarity video file and carrying out rendering broadcasting；Switching command is triggered, obtains and transmits
Target sharpness src2 parameter informations；
Control module, for when getting target sharpness video slicing information, according to the currently playing of triggering switching command
Time calculates current clarity video end time and target sharpness video time started, while downloads current clarity
Video and target sharpness video set current clarity video end of identification；
Playing module for resetting decoder according to the end of identification, and plays video.
The download module includes：
First download unit, for obtaining the burst information of current clarity video file；
First resolution unit, for parsing the burst information of the current clarity video file, according to each fragment when
Long and sequence is calculated the start and end time of corresponding fragment, and the index of settling time, institute is stored in the form of key-value pair
State index；
Second download unit, for downloading and caching the parameter information of target sharpness src2；
Second resolution unit for the duration and sequence of fragment in the parameter information according to target sharpness src2, calculates every
The start and end time of one fragment, and the index of settling time, the index of the time for position some it is specific when
Between where fragment.
The playing module specifically performs following operation：
Playing module receives end of identification, when obtaining the audio or video bag and corresponding broadcasting that src1 finally plays
Between, and decoder is closed, the data for reading the second download unit reopen decoder later；
Whether the render time that playing module detects audio and video packet after the second download unit decapsulates finally plays less than src1
Time, if being less than, abandon the audio and video packet, continue to read audio and video packet and poll check；If more than packet loss logic is complete
Into video data content is continuous and without repeating part, exits the logic that detection judges packet loss.
In the present invention, video file is a pure audio files and pure video file encapsulate in a certain format after text
Part.
Compared with prior art, the advantageous effect of present invention is that：The present invention realizes video in playing process
Seamless switching clarity avoids the operation for re-creating and playing example and the situation of blank screen and frame-skipping occurs, enhances user's
Viewing experience.
Description of the drawings
Fig. 1 is the method for the present invention example flow chart；
Fig. 2 is document analysis module work flow diagram of the present invention；
Fig. 3 is control module work flow diagram of the present invention；
Fig. 4 is online playing device work flow diagram of the invention；
Fig. 5 is download module schematic diagram of the embodiment of the present invention；
Fig. 6 is playing module work flow diagram of the present invention.
Specific embodiment
The method of the present invention is as shown in Figure 1, specifically include：
Step 101, user clicks in terminal device and plays a video, selectes clarity (src1).
In the present embodiment, terminal device can be mobile phone, tablet computer or can wearable device.
Step 102, equipment obtain play instruction after, by download module downloading video files and be transported to playing module into
Row, which renders, to be played.
Specifically, download module creates download unit 1；First download the file fragmentation information of src1, this document burst information
It is made of multiple independent fragments, each fragment includes playing duration and request address.Download startup file after completing
Parsing module.As shown in Figure 2.
201 obtain fragment data from download module,
202 parsing fragment datas, according to the duration and sequence of each fragment, at the beginning and end of calculating corresponding fragment
Between, and the index of settling time, the index of time is for positioning the fragment where some specific time.
203, index file information is stored in the form of key-value pair, at the beginning of key is each fragment, value contains
The end time of the fragment, request address and other information.
Step 103, in playing process, equipment checks that network state changes or user triggers switching command, plays
The corresponding audio and video of clarity (src2).
Specifically, equipment inspection is according to current network speed, when network speed disclosure satisfy that more high-definition smooth playing or
There is serious interim card and can not meet the broadcasting of current clarity that the function of automatic switchover can be provided.
User's triggering command, mainly according to user behavior.
Step 104, play system receives switching command, and the parameter for obtaining src2 is passed to control module.
Specifically, src2 parameters include file fragmentation address, the current play time of switching command is triggered.By these parameters
Incoming control module.
Step 105, after src2 parameters and switching command is got, the fileinfo of src2 is asked.
Specifically, download module can create a new download unit 2, for downloading and caching the related data of src2；
The file fragmentation information of src2 is downloaded, this document burst information is made of multiple independent fragments, each fragment, which includes, to be played
Duration and request address.Startup file parsing module after completing is downloaded, according to the duration and sequence of fragment, is calculated each
The start and end time of a fragment, and the index of settling time, for positioning the fragment where some specific time.
Such as occur downloading file fragmentation failure, show the handover failure, perform step 109, continue to play src1.
Step 106, according to the current play time of incoming switching command, at the end of calculating current clarity video
Between, the target sharpness video time started.
Specifically, as shown in figure 3,
301, current reproduction time is obtained from incoming switching command, and preserve current reproduction time；
302, pull the fragment index of src1 and the fragment index file of src2；
303, using current play time, the fragment index of src1 is inquired, finds reproduction time fragment in fragment index
In section, according to the information of the fragment, the end time t1 of the fragment is obtained；
304, the fragment index file of src2 is inquired, finds time t1 in fragment index in the section of fragment, according to this point
The information of piece obtains t2 at the beginning of the fragment；
305, setting target sharpness video downloads the time started as t2.
Step 107, the slicing files of src1 and src2 are downloaded, end of identification is set.
Specifically, the end time for the 1 current downloading slicing of download unit that obtaining step 102 creates, detects current slice
Whether the end time is more than t1.
If the current slice end time is less than or equal to t1, represent that the data of src1 download completion not yet, continue to download simultaneously
Whether the poll detection current slice end time is more than t1；If the current slice end time is more than t1, stop under download unit 1
It carries, adds in end of identification in the run-out of the fragment where t1, the data of download unit 1 have downloaded completion, delete t1 places point
The fragment data downloaded after piece.
Specifically, after step 106 gets the download initial time t2 of src2, notice download module starts where t2
Fragment start load src2 fragment data.The download unit 2 created using step 105 is successively from the fragment of src2 index
Download single fragment.
Step 108, decoder is reset according to end mark, abandons the data of src1 and src2 overlappings.
Specifically, download module reads video file from download unit 1, read fragment run-out and include end mark,
The end of identification is notified into playing module；Download unit 2 is switched to continue to read video file.
Specifically, playing module receives end of identification, audio or video bag and obtain that acquisition src1 is finally played
The corresponding time terminated is taken, and closes decoder, the data for reading download unit 2 reopen decoder later.
Specifically, the audio, video data of download unit 2 is read, audio and video packet after detection download unit 2 decapsulates
Whether render time is less than the time that src1 is finally played.If being less than, the data packet is abandoned, continues read data packet and poll inspection
It looks into.If more than packet loss logic has been completed, and video data content is continuous and without repeating part, exits detection and judges patrolling for packet loss
Volume.
Step 109, the audio, video data of reading is played.
Online playback method provided in an embodiment of the present invention when receiving switching clarity instruction, passes through multithreading
It realizes that a variety of clarity videos are downloaded simultaneously, ensure that the normal play of current clarity also completes adding for target sharpness
It carries, realizes the function of seamless switching clarity.It is currently playing to avoid stopping, re-creating and plays blank screen waiting existing for example
Phenomenon improves the viewing experience of user.
The embodiment of the present invention additionally provides a kind of online playing device, as shown in figure 4, specifically including：Download module, file
Parsing module, control module and playing module.
Download module, for the slicing files and video file of foradownloaded video.The download module supports multitask to download,
As shown in figure 5, it can respectively be downloaded comprising multiple download units.
Shown buffer unit 501 contains spatial cache, the video data that storage first unit is downloaded；
Buffer control module 504 reads buffer unit for controlling, and when first time buffer unit completion setting end mark, delays
It deposits control module and judges whether the second buffer unit 502, exist, be switched to the second buffer unit, caching related content is all
It is to belong to 502, repeats the control, until buffer unit is not present, buffer control module is set into end mark, download module
Complete all file downloads.
Document analysis module, for parsing video file fragmentation information and storing, so as to inquire and position fragment letter
Breath and address.
Control module for controlling the loading end time of current goal clarity, sets end mark, and setting target is clear
The starting segment of clear degree loading.
Playing module, for playing video file, resets DECODER information, and broadcasting for each frame picture is obtained according to decapsulation
The time is put, abandons the data of time-interleaving.
As shown in fig. 6,
Playing module 601 plays the audio and video of decapsulation；
Playing module 602 encounters end of identification in broadcasting, will reset current DECODER information, continues to read audio and video packet, root
Decoder is reopened according to new audio and video packet；
Playing module 603 abandons target sharpness and the audio and video packet of current clarity overlapping according to step 108
Playing module 604 continues to play the audio and video of decapsulation.
Claims (10)
1. a kind of online playback method of audio and video, which is characterized in that include the following steps：
1) a certain clarity src1 is selected to play video；
2) burst information of current clarity video file is obtained, current clarity video file is downloaded and carries out rendering broadcasting；
3) switching command is triggered, obtains and transmits target sharpness src2 parameter informations；
4) judge whether to get target sharpness video slicing information, if so, entering step 5)；Otherwise, it enters step 7)；
5) according to the current play time of triggering switching command, current clarity video end time and target sharpness are calculated
The video time started, while current clarity video and target sharpness video are downloaded, current clarity video is set to terminate to mark
Know；
6) decoder is reset according to the end of identification, abandons the audio and video number of the clarity src2 Chong Die with clarity src1
According to；
7) audio, video data downloaded is played.
2. the online playback method of audio and video according to claim 1, which is characterized in that in step 2), it is current clear to obtain
After spending the burst information of video file, the burst information of the video file is parsed, according to the duration and sequence of each fragment,
The start and end time of corresponding fragment, and the index of settling time are calculated, the index, institute are stored in the form of key-value pair
Index is stated for positioning and inquiring the fragment position where some time；In the key-value pair, key is the beginning of each fragment
Time, value contain end time and the request address of fragment.
3. the online playback method of audio and video according to claim 1, which is characterized in that in step 3), when equipment checks net
When network state changes or user triggers switching command, then the operation of the triggering switching command is performed.
4. the online playback method of audio and video according to claim 1, which is characterized in that in step 3), target sharpness
Src2 parameter informations include target sharpness video slicing address, trigger the current play time of switching command.
5. the online playback method of audio and video according to claim 1, which is characterized in that in step 5), calculate current clear
The specific implementation process of clear degree video end time and target sharpness video time started include：
1) it is obtained from the switching command and preserves current reproduction time；
2) the fragment index file of src1 and the fragment index file of src2 are pulled；
3) current reproduction time is used, inquires the fragment index file of src1, fragment i is searched, makes current reproduction time position
At the beginning of fragment i between the end time, according to the information of fragment i, the end time t1 of the fragment is obtained；Inquiry
The fragment index file of src2 searches fragment j, and the t1 times is made to be located at the beginning of fragment j between the end time, according to this
The information of fragment j obtains t2 at the beginning of fragment j；
4) the setting target sharpness video time started is t2.
6. the online playback method of audio and video according to claim 5, which is characterized in that in step 5), it is clear to download target
Degree video specific implementation process includes：
Time started t2 is downloaded according to the target sharpness video, from the outset between for the fragment of t2 download target sharpness
Video.
7. the online playback method of audio and video according to claim 6, which is characterized in that current clarity video is set to terminate
The specific operation process of mark includes：
If the burst information end time of current clarity video file is less than or equal to t1, represent the data of src1 there are no under
It carries and completes, continue to download and poll detects；
If the burst information end time of current clarity video file is more than t1, stop downloading, in the piece of the fragment where t1
Tail adds in end of identification, downloads and completes, the fragment data downloaded after fragment where deleting t1.
8. a kind of online play system of audio and video, which is characterized in that including：
Download module, for downloading current clarity video file and carrying out rendering broadcasting；Switching command is triggered, obtains and transmits
Target sharpness src2 parameter informations；
Control module, for when getting target sharpness video slicing information, according to the currently playing of triggering switching command
Time calculates current clarity video end time and target sharpness video time started, while downloads current clarity
Video and target sharpness video set current clarity video end of identification；
Playing module for resetting decoder according to the end of identification, and plays video.
9. system according to claim 8, which is characterized in that the download module includes：
First download unit, for obtaining the burst information of current clarity video file；
First resolution unit, for parsing the burst information of the current clarity video file, according to each fragment when
Long and sequence is calculated the start and end time of corresponding fragment, and the index of settling time, institute is stored in the form of key-value pair
State index；
Second download unit, for downloading and caching the parameter information of target sharpness src2；
Second resolution unit for the duration and sequence of fragment in the parameter information according to target sharpness src2, calculates every
The start and end time of one fragment, and the index of settling time, the index of the time for position some it is specific when
Between where fragment.
10. system according to claim 9, which is characterized in that the playing module specifically performs following operation：
Playing module receives end of identification, when obtaining the audio or video bag and corresponding broadcasting that src1 finally plays
Between, and decoder is closed, the data for reading the second download unit reopen decoder later；
Whether the render time that playing module detects audio and video packet after the second download unit decapsulates finally plays less than src1
Time, if being less than, abandon the audio and video packet, continue to read audio and video packet and poll check；If more than packet loss logic is complete
Into video data content is continuous and without repeating part, exits the logic that detection judges packet loss.
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| CN109144613A (en) * | 2018-09-03 | 2019-01-04 | 武汉斗鱼网络科技有限公司 | Android clarity switching method, device, terminal and readable medium |
| CN109144613B (en) * | 2018-09-03 | 2021-10-15 | 武汉斗鱼网络科技有限公司 | Android definition switching method and device, terminal and readable medium |
| CN109246462A (en) * | 2018-10-11 | 2019-01-18 | 苏宁易购集团股份有限公司 | A kind of video flowing seamless handover method and device |
| CN109246462B (en) * | 2018-10-11 | 2021-08-06 | 苏宁易购集团股份有限公司 | Seamless switching method and device for video stream |
| CN109168039A (en) * | 2018-10-22 | 2019-01-08 | 武汉斗鱼网络科技有限公司 | Code stream clarity switching method, device, terminal and the readable medium of android system |
| CN109600626A (en) * | 2018-12-24 | 2019-04-09 | 北京奇艺世纪科技有限公司 | A kind of method for processing video frequency and relevant device |
| CN112632321A (en) * | 2019-09-23 | 2021-04-09 | 北京国双科技有限公司 | Audio file processing method and device and audio file playing method and device |
| CN112379768A (en) * | 2020-11-12 | 2021-02-19 | 北京中电兴发科技有限公司 | Power consumption reduction method applied to embedded cloud storage system |
| CN112379768B (en) * | 2020-11-12 | 2021-05-18 | 北京中电兴发科技有限公司 | Power consumption reduction method applied to embedded cloud storage system |
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