CN105323597B - MP4 document play-back method, treating method and apparatus and play system - Google Patents
MP4 document play-back method, treating method and apparatus and play system Download PDFInfo
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Abstract
The present invention propose a kind of MP4 file play, treating method and apparatus and play system, be related to multimedia technology field.Wherein, MP4 document play-back method includes: the index file head that MP4 file is obtained from server, wherein MP4 file is split as multiple fragments, and index file head includes the slicing files head index of each fragment；Slicing files head is obtained from server according to slicing files head index；It is obtained according to slicing files head from server and plays fragment.By the way that the file header for needing to download when player plays starting by MP4 file fragmentation and by way of forming slicing files head, can be reduced, shorten the time for playing the file header that waits for downloads when starting, to accelerate the starting speed of video.
Description
Technical field
The present invention relates to multimedia technology field, especially a kind of MP4 (Moving Picture Experts Group
4, dynamic image expert group) document play-back method, treating method and apparatus and play system.
Background technique
MP4 file format is the mainstream format that current major audio-visual website uses, and client gradually obtains MP4 from server
File simultaneously plays out.MP4 file has a most important component part to be known as file header.Specific media are not included in file header
Data, but include the macroscopic description information of all media datas in MP4 file, have recorded creation time, modification time, time degree
Measure the specifying information of each media track in scale, playable duration etc. and file.MP4 file is needed through cooperation file
Information in head can play out.
In the prior art, as soon as player will play a content for MP4 format, firstly the need of downloading file header, only
After having downloaded file header, the necessary information played could be obtained, player plays starting is waiting for a long time.
Summary of the invention
It is an object of the invention to solve the problems, such as that the player plays of MP4 file are waiting for a long time.
The present invention proposes a kind of MP4 document play-back method, comprising: the index file head of MP4 file is obtained from server,
In, MP4 file is split as multiple fragments, and index file head includes the slicing files head index of each fragment；According to fragment text
Part head index obtains slicing files head；It is obtained according to slicing files head and plays fragment.
Further, slicing files head index is the allocation index of slicing files head or the road for storing slicing files leading address
Diameter index.
Further, index file head further includes the time range of each fragment；This method further include: respond the dragging of user
Operation indexes the fragment determined where dragging position according to slicing files head；It is sent to server and obtains fragment request, obtained and divide
Piece request drags the request of location information comprising corresponding fragment and user.
MP4 document play-back method of the invention can make client can be to right after single slicing files head is completed in downloading
Fragment is answered to play out.Since the size of file header and the length of MP4 file are positively correlated, after MP4 file fragmentation, each fragment
Slicing files head length be less than the length of former MP4 file header；Under the index of indexed file head, can by MP4 file with
The form of fragment is transmitted, and completes to play.In this way, it shortens starting and plays the front lower time for carrying file header,
Achieve the purpose that improve video starting speed.
The present invention also proposes a kind of MP4 document handling method, comprising: the index file head of MP4 file is sent to client,
Wherein, MP4 file is cut into multiple fragments, and index file head includes the slicing files head index of each fragment；To client
Send slicing files head；Fragment corresponding with slicing files head is sent so that client is played according to slicing files head to client
Corresponding fragment.
Further, slicing files head index is the allocation index of slicing files head or the road for storing slicing files leading address
Diameter index.
Further, the fragment of MP4 file is logic fragment, and slicing files head separates storage with corresponding fragment.
Further, the slicing files head of MP4 file and corresponding fragment Coutinuous store, and slicing files head is located at corresponding point
The front end of piece.
Further, judge the location information whether dragged comprising response user in fragment request, if comprising location information,
Initial address of the corresponding content in fragment is then determined according to location information, generates new slicing files head.
Further, judge the location information whether dragged comprising response user in fragment request, if comprising location information,
Then according to location information again fragment, and generate new slicing files head.
MP4 document handling method of the invention can make server end be sent completely single slicing files head to client
After corresponding fragment can be played out in client.Since the size of slicing files head is less than the file header of former MP4 file,
Server to client send the time used in single slicing files head be less than send original head time, in this way
Mode shortens the time that file header is sent before starting plays, and has achieved the purpose that the starting speed for improving video.
The present invention also proposes a kind of MP4 file playing device, comprising: index receiving module, for receiving index file head,
Wherein, MP4 file is cut into multiple fragments, and index file head includes the slicing files head index of each fragment；Slicing files
Head receiving module, for receiving slicing files head；Fragment receiver module, for receiving the corresponding fragment of slicing files head；It plays
Module, for playing fragment according to slicing files head.
Further, slicing files head index is the allocation index of slicing files head or the road for storing slicing files leading address
Diameter index.
Further, MP4 file playing device further includes interactive module, for responding the drag operation of user, according to point
Piece file header index determines the fragment that dragging position is located at, and sends the request that location information is dragged comprising corresponding fragment and user.
MP4 file playing device of the invention, can be realized under the index of indexed file head receive slicing files head,
MP4 file fragmentation reduces the file header that video starting needs to download, and so as to shorten the time that video starting needs to wait, reaches
Accelerate the purpose that MP4 file plays starting speed.
The invention also includes a kind of MP4 document handling apparatus, comprising: index sending module, for sending index file head,
Wherein MP4 file is cut into multiple fragments, and index file head includes the slicing files head index of each fragment；Slicing files head
Sending module, for sending slicing files head；Fragment sending module, for sending fragment corresponding with slicing files head.
Further, slicing files head index is the allocation index of slicing files head or the road for storing slicing files leading address
Diameter index.
Further, the fragment of MP4 file is logic fragment, and slicing files head separates storage with corresponding fragment.
Further, the slicing files head of MP4 file and corresponding fragment Coutinuous store, and slicing files head is located at corresponding point
The front end of piece.
Further, MP4 document handling apparatus further include: request judgment module, for judging whether wrap in fragment request
The location information of the dragging of the user containing response；Update module, for determining starting of the corresponding content in fragment according to location information
Address generates new slicing files head.
Further, MP4 document handling apparatus further include: request judgment module, for judging whether wrap in fragment request
The location information of the dragging of the user containing response；Update module is used for according to location information again fragment, and generates new file header.
MP4 document handling apparatus of the invention, which can be realized, sends slicing files head, MP4 under the index of indexed file head
File fragmentation reduces the file header that video starting needs to send, and so as to shorten the time that video starting needs to wait, reaches quickening
MP4 file plays the purpose of starting speed.
In addition, the present invention also proposes a kind of MP4 file playing system, including MP4 file playing device noted earlier
With MP4 document handling apparatus.
System in this way realizes the file header needed when reducing MP4 file start, and the index of indexed file head
The lower broadcasting for completing entire MP4 file, to achieve the purpose that improve video playing starting speed.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of one embodiment of MP4 document play-back method of the invention.
Fig. 2 is the flow chart of one embodiment of MP4 document handling method of the invention.
Fig. 3 is the schematic diagram of one embodiment of MP4 file playing system of the invention.
Fig. 4 is the schematic diagram of another embodiment of MP4 file playing system of the invention.
Fig. 5 is the order program service flow chart of MP4 file playing system of the invention.
Fig. 6 is that server of the invention obtains fragment request process flow diagram.
Specific embodiment
With reference to the accompanying drawings to invention is more fully described, wherein illustrating exemplary embodiment of the present invention.
A kind of flow chart of one embodiment of MP4 document play-back method of the invention is as shown in Figure 1.
In a step 101, the index file head that MP4 file is obtained from server obtains the fragment text in index file head
Part head index.
In a step 102, it is indexed according to slicing files head and obtains slicing files head.
In step 103, it is obtained according to obtained slicing files head and plays fragment.
Multiple slicing files heads and fragment can be obtained by repeating step 102 and 103, to play entire MP4 file.
Since the file header size of MP4 file and the length of file are positively correlated, after MP4 file fragmentation, distinguish for each fragment
File header is generated, the size of slicing files head is less than the file header of former MP4 file.In this way, it can obtain
Start to play out the correspondence fragment of acquisition after slicing files head, accelerates the starting speed of MP4 file broadcasting.
The slicing files head index stored in the index file head obtained in step 101 can be the address of slicing files head
Index.The address of required slicing files head is obtained from index file head, so that corresponding slicing files head is obtained, logic letter
Single, server is swift in response.
Slicing files head indexes the path indexing that can also be slicing files leading address.It can be obtained from index file head
The routing information of slicing files leading address is stored, to obtain the address of storage slicing files head, then obtains slicing files head.
It, can be using the side calculated since the occupied space of the address information of slicing files head is fixed for slicing files head
Formula obtains the storage path of different slicing files leading address, therefore this mode can effectively reduce the big of index file head
It is small, reduce the waiting time before MP4 file plays.
In one embodiment, MP4 document play-back method can also increase the processing with user interactive operation.To server
Fragment request is sent, fragment request includes that corresponding fragment and user drag location information.
After obtaining index file head, when drag operation occurs, due to further comprising each fragment in index file head
Time range information, according to dragging position and each fragment time range information, determine dragging position locating for fragment, then to
Server sends fragment request.Corresponding slicing files head and fragment are obtained in this way and are played.Using such
Mode can be realized the reaction to user's drag operation, realize the function of interacting with user.If by calculating, the position of dragging
The exactly initial position of some fragment can not include the information for dragging position in fragment request, can also obtain dragging position
Set the content of beginning.
The flow chart of one embodiment of MP4 document handling method of the invention is as shown in Figure 2.
In step 201, server end sends index file head to client, has MP4 file fragmentation in index file head
Slicing files head index.
In step 202, server end sends slicing files head to client.
In step 203, server end to client send corresponding with slicing files head fragment so as to client according to
Slicing files head plays corresponding fragment.
In this way, the length that can reduce the file header for needing to send in video starting, reduces file header
Sending time, accelerate MP4 file broadcasting starting speed.
The slicing files head index information stored in the index file head sent in step 201 can be slicing files head
Allocation index, can be obtained the address of required slicing files head from index file head, to obtain corresponding slicing files
Head, logic is simple, and server is swift in response.
Slicing files head indexes the path indexing that can also be slicing files leading address, can obtain from index file head
The routing information of slicing files leading address is stored, to obtain the address of storage slicing files head, then obtains slicing files head.
It, can be using the side calculated since the occupied space of the address information of slicing files head is fixed for slicing files head
Formula obtains the storage path of different slicing files leading address, therefore will store the path indexing of file leading address as slicing files
Head index can effectively reduce the size of index file head, preferably accelerate the starting speed of MP4 file.
The fragment of MP4 file can be logic fragment, and slicing files head separates storage with corresponding fragment.Logic fragment
It in mode, does not need to make variation to MP4 file itself, in fragment again, it is only necessary to form new file header, processing letter
It is single.The fragment of MP4 file can also be located at the front end of corresponding fragment with corresponding fragment Coutinuous store, slicing files head, such
Sliced fashion guarantees slicing files head and corresponding fragment Coutinuous store, relatively reliable in document transmission process.
In one embodiment, MP4 document handling method can also increase sends accordingly according to the dragging of client request
The function for the video that position starts.After sending index file head to client, when receiving fragment request, judge that fragment is asked
Whether include dragging location information in asking.If not including dragging location information, according to the burst information of request, send corresponding
Slicing files head, send corresponding fragment according to slicing files hair；If calculating dragging position comprising dragging location information
Then storage address in locating fragment corresponds to the media file that the storage address starts and forms new file header, send
Since the slicing files head and corresponding fragment send file to realize dragging position.
The schematic diagram of one embodiment of MP4 file playing system of the invention is as shown in Figure 3.In this embodiment, 31
Indicate MP4 file playing device, 32 indicate MP4 document handling apparatus.It indexes sending module 301 and sends index file head to index
Receiving module 304, slicing files head sending module 302 send slicing files head to slicing files head receiving module 305, fragment text
Part head sending module 302 determines fragment according to slicing files head information, and sends fragment by fragment sending module 303 and connect to fragment
Module 306 is received, slicing files head receiving module 305 and fragment receiver module 306 by the slicing files head received and are divided respectively
Piece is sent to playing module 307 and plays out.By the transmission of multiple slicing files heads and slicing files, entire MP4 view is realized
The broadcasting of frequency.Such device can be realized in video starting, and MP4 document handling apparatus sends slicing files head and corresponding point
Piece, MP4 file playing device can play corresponding fragment after receiving slicing files head, accelerate the starting speed of video
Degree.
The schematic diagram of another embodiment of MP4 file playing system of the invention is as shown in Figure 4.41 broadcast for MP4 file
Device is put, 42 be MP4 document handling apparatus.The index file head that index receiving module 405 will be obtained from index sending module 401
It is sent to interactive module 406, interactive module 406 calculates according to dragging situation and index file head and drags fragment locating for position,
It transmit a request to judgment module 402.Judgment module 402 judges whether contain location information in request, if it is not, will receive
File header index information be sent to slicing files head sending module 404；If so, then according to positioning in update module 403
Information generates new file header.Slicing files head receiving module 305 is sent to by slicing files head sending module 404.Fragment hair
Module 303 is sent to send the corresponding fragment of slicing files head to fragment receiver module 306, playing module 307 is according to from slicing files
The slicing files head and corresponding fragment received in head receiving module 305 and fragment receiver module 306 plays MP4 file.It is logical
Such device is crossed, the interaction between MP4 file playing system and user is realized, system can be quick according to the dragging of user
The video for being switched to corresponding position plays out.
In one embodiment, index file head can be the file of Json format, may include in index file head with
Keyword in the following table 1:
Table 1
According to the address of the available slicing files head of URL information in index file head.Slicing files head can be with MP4
File fragmentation separation storage, the slicing files head of the same MP4 file can store together.In one embodiment, same
The slicing files head of a MP4 file is formed with a structural body and all slicing files head Coutinuous stores, wherein being stored in point
The definition of structural body before piece file header can be such that
The number m_dwClipCount of fragment is defined in structural body MP4ClipHeader, and equal with fragment number
MP4ClipInfo structural body.The slicing files head and fragment content letter of the corresponding fragment of each MP4ClipInfo structural body
Breath, wherein m_dwHeaderStartPos is initial position of the slice header in header file, and m_dwHeaderLength is fragment
The length of head, m_llContentStartPos are initial position of the fragment content in original document, m_
DwContentLength is the length of fragment content.
It include the address information of MP4ClipHeader structural body in slicing files head index in index file head, due to
Space occupied by each MP4ClipInfo is identical, therefore can use MP4ClipInfo the space occupied × (fragment serial number -1)+4
Calculating formula obtain the address MP4ClipInfo of corresponding fragment, to obtain the address of corresponding slicing files head, determine fragment text
The address of part.
In this embodiment, slicing files head index content is simple, and the address of MP4ClipHeader structural body is only needed to believe
The store path of slicing files leading address can be calculated in space occupied by breath, each MP4ClipInfo and fragment serial number.This
Kind mode can effectively reduce index file head, and brief client obtains the time of index file head from server.
In one embodiment, order program service process as shown in figure 5,
In step 501, client obtains the positioning URL of MP4 file from portal, initiates video on demand, sends to routing
Request.
In step 502, the index file parting diameter of the virtual fragment of routing inquiry MP4, and return to index file parting diameter
Information is to client.
In step 503, client sends index file head to server according to the index file head routing information received
Request.
In step 504, server receives the request of index file head, detects that the index file header file of request exists,
Then read index file head.
In step 505, server sends index file head to client.
In step 506, client receives index file head and parses, and reads the path of MP4 slicing files.Here fragment
The path of file can be relative path, and the request path of slicing files is constructed using the request path of index file head.
In step 507, parsing obtains fragment request after server receives request, contains polling character in discovery request
String, such as " clipseq " in embodiment in Json file url keyword, and the file requested is MP4 format, then decision request
Content be the virtual fragment of MP4.Server reads the fragment according to " clipseq " specified fragment serial number from slicing files head
File header, corresponding media content is then read from MP4 original document.
In step 508, server sends slicing files head to client.
In step 509, server sends MP4 file fragmentation to client, and client receives the content of request fragment
After start to play；
In step 510, after the fragment content reception is complete, next fragment is requested.
In this embodiment, since client obtains program listing progress program request, index file head is determined by routing
Address, client gradually interacts with server, realizes MP4 file and transmitted and played in a manner of fragment.Server
The slicing files head and fragment that corresponding fragment is just returned after the fragment request for receiving client, guarantee to disconnect in client user
Server can timely stop sending when connection, save server end resource.
In one embodiment, the process flow that server receives after obtaining fragment request message can be such as Fig. 6 institute
Show.In step 601, server receives the acquisition fragment request of client.
In step 602, server judges whether there is " .mp4 " keyword in request, if being free of " .mp4 " keyword,
603 are thened follow the steps, which is not MP4 fragment request；It is no to then follow the steps 604.
In step 604, server judges whether contain inquiry string in request, if being free of inquiry string,
Step 603 is executed, judging the request not is MP4 fragment request；It is no to then follow the steps 605.
In step 605, server analysis request, the fragment serial number of acquisition request.
In step 606, the storage position of the address information of the slicing files head of server computation requests.
In step 607, server reads the address information of slicing files head storage.
In step 608, server reads the content of slicing files head according to the address of slicing files head.
Step more than, server read slicing files head information according to the acquisition fragment request received.
In step 609, server judges obtain in fragment request whether contain location information.Location information is that user drags
Dynamic fragment, and drag a little not in the mark of the initial position of fragment, if containing location information, carry out step 610；If
Without containing location information, then step 612 is carried out.Location information can be which time point dragging position is located at, and be also possible to drag
The relative position of fragment address locating for the media content of dynamic position and the dragging position.
In step 610, server reads the information of former slicing files head and fragment, according to new point of location information construction
Piece file header.
In step 611, server calculates the initial address of new fragment according to location information, constructs new fragment.?
The fragment of MP4 file is logic fragment, in the case that slicing files head individually stores, initial address=original fragment of new fragment
Initial address+dragging position media content locating fragment relative address；In fragment and the corresponding fragment of MP4 file
File header Coutinuous store, and in the case that slicing files head is stored in front of corresponding fragment, initial address=original of new fragment
The initial address of fragment+dragging position media content is long in relative address-original fragment slicing files head of locating fragment.
In step 612, server reads the corresponding fragment of slicing files head.For there is the feelings of location information in request
Condition, what server was read is the new fragment constructed according to location information.
In step 613, slicing files head and corresponding fragment are sent to client by server
By above step, whether it is mp4 request that server successively have passed through after the requests have been received, be point
Whether piece file request has three deterministic processes of location information, more rigorous can carry out deleting choosing to the request received, guarantees
The stabilization of server work.Step 609,610,611 complete user dragging in the case of server process, can guarantee video
Play the realization of drag function.
Description of the invention is given for the purpose of illustration and description, and is not exhaustively or will be of the invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those skilled in the art is enable to manage
The solution present invention is to design various embodiments suitable for specific applications with various modifications.
Claims (13)
1. a kind of MP4 document play-back method characterized by comprising
The index file head of MP4 file is obtained from server, wherein the MP4 file is split as multiple fragments, the index
File header includes the slicing files head index of each fragment, and the index file head further includes the time range of each fragment；
The drag operation for responding user indexes the fragment determined where dragging position according to the slicing files head；
It is sent to the server and obtains fragment request, the acquisition fragment request includes that corresponding fragment and user drag position letter
The request of breath, so that the server calculates storage address of the dragging position in locating fragment, with then corresponding to the storage
The MP4 file that location starts fragment again, and form new slicing files head；
It is indexed according to the slicing files head and obtains slicing files head；
It is obtained according to the slicing files head and plays fragment.
2. the method according to claim 1, wherein slicing files head index is the address of slicing files head
The path indexing of index or storage slicing files leading address.
3. a kind of MP4 document handling method characterized by comprising
The index file head of MP4 file is sent to client, wherein the MP4 file is cut into multiple fragments, the index
File header includes the slicing files head index of each fragment；
Whether judge in the fragment request of the client return comprising dragging location information；
If calculating storage address of the dragging position in locating fragment comprising the dragging location information, then corresponding to
The MP4 file that the storage address starts fragment again, and form new slicing files head；
Slicing files head is sent to client；
Fragment corresponding with the slicing files head is sent so that the client is broadcast according to the slicing files head to client
Put the corresponding fragment.
4. according to the method described in claim 3, it is characterized in that, slicing files head index is the address of slicing files head
The path indexing of index or storage slicing files leading address.
5. according to the method described in claim 3, it is characterized in that, the fragment of the MP4 file is logic fragment, the fragment
File header separates storage with corresponding fragment.
6. according to the method described in claim 3, it is characterized in that, whether judging in fragment request comprising response user's dragging
Location information, if according to the location information again fragment, and generating new slicing files head comprising location information.
7. a kind of MP4 file playing device characterized by comprising
Receiving module is indexed, for receiving index file head, wherein the MP4 file is cut into multiple fragments, the index
File header includes the slicing files head index of each fragment, and the index file head further includes the time range of each fragment；
Interactive module indexes where determining dragging position for responding the drag operation of user according to the slicing files head
Fragment sends to server and obtains fragment request, and the acquisition fragment request includes that corresponding fragment and user drag location information
Request then correspond to the storage address so that the server calculates storage address of the dragging position in locating fragment
The MP4 file fragment again started, and form new slicing files head；
Slicing files head receiving module, for receiving slicing files head；
Fragment receiver module, for receiving the corresponding fragment of the slicing files head；
Playing module, for playing the fragment according to the slicing files head.
8. device according to claim 7, which is characterized in that the slicing files head index is the address of slicing files head
The path indexing of index or storage slicing files leading address.
9. a kind of MP4 document handling apparatus characterized by comprising
Sending module is indexed, for sending index file head, wherein the MP4 file is cut into multiple fragments, the index
File header includes the slicing files head index of each fragment；
Judgment module is requested, whether includes dragging location information in the fragment request for judging client return；
Update module, if calculating storage of the dragging position in locating fragment for comprising the dragging location information
Then address corresponds to the MP4 file that the storage address starts fragment again, and forms new slicing files head；
Slicing files head sending module, for sending slicing files head；
Fragment sending module, for sending fragment corresponding with the slicing files head.
10. device according to claim 9, which is characterized in that the slicing files head index is the ground of slicing files head
The path indexing of location index or storage slicing files leading address.
11. device according to claim 9, which is characterized in that the fragment of the MP4 file be logic fragment, described point
Piece file header separates storage with corresponding fragment.
12. device according to claim 9, which is characterized in that the slicing files head of the MP4 file connects with corresponding fragment
Storage is renewed, and the slicing files head is located at the front end of the corresponding fragment.
13. a kind of MP4 file playing system, which is characterized in that including MP4 file playing device described in claim 7 or 8 and
Any MP4 document handling apparatus of claim 9~12.
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| CN106777171B (en) * | 2016-12-22 | 2020-11-03 | 北京小度互娱科技有限公司 | Method and apparatus for outputting fragmented media files |
| CN110022481B (en) * | 2018-01-10 | 2023-05-02 | 中兴通讯股份有限公司 | Decoding and generating methods and devices of video code stream, storage medium and electronic device |
| CN109376254A (en) * | 2018-09-11 | 2019-02-22 | 青岛海信移动通信技术股份有限公司 | Processing method, device, electronic equipment and the readable storage medium storing program for executing of data flow |
| CN109640113B (en) * | 2018-12-28 | 2021-08-27 | 网宿科技股份有限公司 | Processing method for dragging video data and proxy server |
| CN109729386B (en) * | 2019-01-03 | 2021-06-15 | 深圳市网心科技有限公司 | Video file playing starting method and system, electronic equipment and storage medium |
| CN112394876B (en) * | 2019-08-14 | 2024-02-23 | 深圳市特思威尔科技有限公司 | Large file storage/reading method, storage/reading device and computer equipment |
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