CN108093299A - MP4 damages the restorative procedure and storage medium of file - Google Patents
MP4 damages the restorative procedure and storage medium of file Download PDFInfo
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- CN108093299A CN108093299A CN201711404796.7A CN201711404796A CN108093299A CN 108093299 A CN108093299 A CN 108093299A CN 201711404796 A CN201711404796 A CN 201711404796A CN 108093299 A CN108093299 A CN 108093299A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008439 repair process Effects 0.000 claims abstract description 22
- AWSBQWZZLBPUQH-UHFFFAOYSA-N mdat Chemical compound C1=C2CC(N)CCC2=CC2=C1OCO2 AWSBQWZZLBPUQH-UHFFFAOYSA-N 0.000 claims description 31
- 238000004590 computer program Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005538 encapsulation Methods 0.000 description 6
- 230000002950 deficient Effects 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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- 230000000284 resting effect Effects 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/85406—Content authoring involving a specific file format, e.g. MP4 format
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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
- H04N21/439—Processing of audio elementary streams
-
- 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
- H04N21/4402—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 reformatting operations of video signals for household redistribution, storage or real-time display
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
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- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The invention discloses the restorative procedure and storage medium of a kind of MP4 damage files, method includes：It obtains with reference to video；Obtain the sequence parameter set with reference to video；According to the sequence parameter set, the slice header in damage file is decoded, obtains the frame number of type of strip and video frame；If the value of the type of strip is in default scope and frame number is continuous, it is legal video frame to judge the corresponding video frame of the slice header；Video frame legal in damage file is obtained, obtains sets of video frames；The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, obtains video and audio frame set；According to described with reference to video and the video and audio frame set, obtain repairing file.The present invention can integrally improve the repairing effect of MP4 damage files and repair supporting rate.
Description
Technical field
The present invention relates to recovery technique field more particularly to the restorative procedures and storage medium of a kind of MP4 damage files.
Background technology
With the popularization of smart mobile phone and recorder device, video data is seen everywhere.Such as mobile phone, automobile data recorder, hold
Method recorder etc. is all large batch of daily to produce video data, these video datas largely use MP4 encapsulation format.
MP4 full name MPEG-4Part 14, is a kind of common multimedia container formats, currently the majority smart mobile phone, nothing
The video recording equipments such as man-machine, automobile data recorder are all using MP4 as video encapsulation form.MP4 is marked at " ISO/IEC 14496-14 "
Defined in quasi- file, belong to a part of MPEG-4.MP4 encapsulation format is packaged form, existing data according to certain
Form be packaged packing.MP4 data are encapsulated in units of box, and Fig. 1 forms figure for MP4 encapsulation format box.
Regrettably these valuable video datas meet with various accidents sometimes, and having plenty of equipment fault causes video to be recorded
System is interrupted, and the video for recording out can not play, some be then by artificial deletion file, can be with although there is data to recover software
Recover video data, but since MP4 video encapsulations form is higher to the integrity demands of file, the data recovered are sometimes
It is not complete data, there are sub-fraction data to be capped, causes video damage that can not play, but be not covered with
Data may just have key message, these incomplete videos can be repaiied by this time needing video recovery technique
It is multiple, replay damage video.
There are the softwares that several moneys are repaired specifically for damage MP4 video files on internal and international.For damage MP4
Following scheme is usually taken in the reparation of video file：
There is provided one with reference to video (with reference to video invitation be the recording of same equipment can normal play video file) lead to
It crosses and audio/video frames extraction is carried out to disk with reference to the information that video provides, then the audio/video frames extracted are sealed according to normal video
Dress form is packaged into MP4.
But existing scheme has the following disadvantages：
1st, the reparation of partial video sound is not supported, it is low that audio repairs supporting rate.
2nd, partial video recovery effects are bad, although can play, picture has flower screen.
The content of the invention
The technical problems to be solved by the invention are：A kind of restorative procedure and storage medium of MP4 damages file are provided, it can
Repairing effect and the audio reparation supporting rate for improving MP4 damage files are low.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of reparation side of MP4 damages file
Method, including：
It obtains with reference to video；
Obtain the sequence parameter set with reference to video；
According to the sequence parameter set, the slice header in damage file is decoded, obtains type of strip and video frame
Frame number；
If the value of the type of strip is in default scope and frame number is continuous, the corresponding video of the slice header is judged
Frame is legal video frame；
Video frame legal in damage file is obtained, obtains sets of video frames；
The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；
Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, is obtained
Video and audio frame set；
According to described with reference to video and the video and audio frame set, obtain repairing file.
The invention further relates to a kind of computer readable storage mediums, are stored thereon with computer program, and described program is located
Reason device realizes following steps when performing：
It obtains with reference to video；
Obtain the sequence parameter set with reference to video；
According to the sequence parameter set, the slice header in damage file is decoded, obtains type of strip and video frame
Frame number；
If the value of the type of strip is in default scope and frame number is continuous, the corresponding video of the slice header is judged
Frame is legal video frame；
Video frame legal in damage file is obtained, obtains sets of video frames；
The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；
Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, is obtained
Video and audio frame set；
According to described with reference to video and the video and audio frame set, obtain repairing file.
The beneficial effects of the present invention are：It, can to the integrality of video frame and effectively by using defective frame recognizer
Performance makes differentiation, by only obtaining legal video frame, so as to greatly improve video repairing effect, avoids existing after repairing
The situation of Hua Ping；Interlocked differential data extracting method by video and audio, will two-by-two the frame between video frame as audio frame into
Row obtains, and effectively the voice data in video can be repaired, and greatly improves audio repairing effect with repairing supporting rate.This hair
It is bright integrally to improve the repairing effect of MP4 damage files and reparation supporting rate.
Description of the drawings
Fig. 1 is MP4 encapsulation format schematic diagrames；
Fig. 2 is the flow chart for the restorative procedure that a kind of MP4 of the present invention damages file；
Fig. 3 is the method flow diagram of the embodiment of the present invention one.
Specific embodiment
For the technology contents that the present invention will be described in detail, the objects and the effects, below in conjunction with embodiment and coordinate attached
Figure is explained in detail.
The design of most critical of the present invention is：The completeness and efficiency of video frame is made using defective frame recognizer
Differentiate；Differential data extracting method is interlocked using video and audio to carry out the extraction of audio frame.
Referring to Fig. 2, a kind of restorative procedure of MP4 damages file, including：
It obtains with reference to video；
Obtain the sequence parameter set with reference to video；
According to the sequence parameter set, the slice header in damage file is decoded, obtains type of strip and video frame
Frame number；
If the value of the type of strip is in default scope and frame number is continuous, the corresponding video of the slice header is judged
Frame is legal video frame；
Video frame legal in damage file is obtained, obtains sets of video frames；
The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；
Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, is obtained
Video and audio frame set；
According to described with reference to video and the video and audio frame set, obtain repairing file.
As can be seen from the above description, the beneficial effects of the present invention are：Can integrally improve MP4 damage file repairing effect and
Repair supporting rate.
Further, described " obtaining the sequence parameter set with reference to video " is specially：
The network abstraction layer unit that types value is 7 in the reference video is decoded, obtains sequence parameter set.
Seen from the above description, NAL TYPE are that 7 NAL unit is sequence parameter set.
Further, it is described " according to the sequence parameter set, the slice header in damage file to be decoded, obtains item
The frame number of belt type and video frame " is specially：
Using the first character section damaged in file as current byte；
Obtain the byte data that the length using current byte as starting point is eight bytes；
It is decoded according to byte data described in the sequential parameter set pair；
If decoding failure, using next byte of current byte as current byte, the acquisition is continued to execute with current
The step of byte is the byte data that the length of starting point is eight bytes；
If successfully decoded, using the byte data as slice header, obtained according to preceding four bytes of the slice header
The corresponding video frame of the slice header, and the frame number of type of strip and video frame is obtained according to decoding result.
Further, it is described " if the value of the type of strip is in default scope and frame number is continuous, to judge the item
Corresponding video frame is taken the lead as legal video frame " after, further comprise：
Using next byte of current byte as current byte, length of the acquisition using current byte as starting point is continued to execute
The step of spending the byte data for eight bytes.
Seen from the above description, the slice header Slice for obtaining including video frame frame head is traveled through in file is damaged
Header so as to get video frame according to the frame originating point information of video frame, and can obtain type of strip by parsing slice header
The frame number frame_num of Slice type and video frame, for judging whether video frame is legal.
Further, described " according to described with reference to video and the video and audio frame set, obtaining repairing file " is specially：
It creates and repairs file；
If repairing file there are ftyp box, from described with reference to obtaining ftyp data in video, and by the ftyp numbers
In the ftyp box that file is repaired according to write-in；
The total length of the video and audio frame in the video and audio frame set is calculated, and mdat box are obtained according to the total length
Header information；
File is repaired into video and audio frame write-in in the header information of the mdat box and the video and audio frame set
In mdat box；
Time scale is obtained in mvhd box from reference to video；
The single frames duration of video frame is obtained from reference to the stts box in video；
According to the totalframes of video frame in the single frames duration of the video frame and the video and audio frame set, obtain
Duration；
The time scale and duration write-in are repaired in the mvhd box of file；
The length write-in of each video frame in the video and audio frame set is repaired to the stsz box that video frame is corresponded in file
In；
The length write-in of each audio frame in the video and audio frame set is repaired to the stsz box that audio frame is corresponded in file
In；
According to the size of the offset of each video frame and each audio frame and ftyp box in the video and audio frame set and
Each video frame and each audio frame is calculated in the video and audio frame set in the reparation file in the head size of mdat box
In offset address；
According to offset address, each video frame and each audio frame are grouped respectively；
The offset address write-in of each video frame packet is repaired in the stco box that video frame is corresponded in file；
The offset address write-in of each audio frame packets is repaired in the stco box that audio frame is corresponded in file；
Grouping information is write in the stsc box for repairing file；
By type in video and audio frame set for can frame number of the video frame in sets of video frames of random read take frame write
In the stss box for repairing file；
By with reference to video tkhd box, stsd box, the data in stts box are respectively written into and repair the tkhd of file
In box, stsd box, stts box.
Seen from the above description, according to the format information of the video and audio frame with reference to video and coding/decoding information and from damage
The video and audio frame extracted in file, establishment obtain repairing file.
The present invention also proposes a kind of computer readable storage medium, is stored thereon with computer program, described program is located
Reason device realizes following steps when performing：
It obtains with reference to video；
Obtain the sequence parameter set with reference to video；
According to the sequence parameter set, the slice header in damage file is decoded, obtains type of strip and video frame
Frame number；
If the value of the type of strip is in default scope and frame number is continuous, the corresponding video of the slice header is judged
Frame is legal video frame；
Video frame legal in damage file is obtained, obtains sets of video frames；
The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；
Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, is obtained
Video and audio frame set；
According to described with reference to video and the video and audio frame set, obtain repairing file.
Further, described " obtaining the sequence parameter set with reference to video " is specially：
The network abstraction layer unit that types value is 7 in the reference video is decoded, obtains sequence parameter set.
Further, it is described " according to the sequence parameter set, the slice header in damage file to be decoded, obtains item
The frame number of belt type and video frame " is specially：
Using the first character section damaged in file as current byte；
Obtain the byte data that the length using current byte as starting point is eight bytes；
It is decoded according to byte data described in the sequential parameter set pair；
If decoding failure, using next byte of current byte as current byte, the acquisition is continued to execute with current
The step of byte is the byte data that the length of starting point is eight bytes；
If successfully decoded, using the byte data as slice header, obtained according to preceding four bytes of the slice header
The corresponding video frame of the slice header, and the frame number of type of strip and video frame is obtained according to decoding result.
Further, it is described " if the value of the type of strip is in default scope and frame number is continuous, to judge the item
Corresponding video frame is taken the lead as legal video frame " after, further comprise：
Using next byte of current byte as current byte, length of the acquisition using current byte as starting point is continued to execute
The step of spending the byte data for eight bytes.
Further, described " according to described with reference to video and the video and audio frame set, obtaining repairing file " is specially：
It creates and repairs file；
If repairing file there are ftyp box, from described with reference to obtaining ftyp data in video, and by the ftyp numbers
In the ftyp box that file is repaired according to write-in；
The total length of the video and audio frame in the video and audio frame set is calculated, and mdat box are obtained according to the total length
Header information；
File is repaired into video and audio frame write-in in the header information of the mdat box and the video and audio frame set
In mdat box；
Time scale is obtained in mvhd box from reference to video；
The single frames duration of video frame is obtained from reference to the stts box in video；
According to the totalframes of video frame in the single frames duration of the video frame and the video and audio frame set, obtain
Duration；
The time scale and duration write-in are repaired in the mvhd box of file；
The length write-in of each video frame in the video and audio frame set is repaired to the stsz box that video frame is corresponded in file
In；
The length write-in of each audio frame in the video and audio frame set is repaired to the stsz box that audio frame is corresponded in file
In；
According to the size of the offset of each video frame and each audio frame and ftyp box in the video and audio frame set and
Each video frame and each audio frame is calculated in the video and audio frame set in the reparation file in the head size of mdat box
In offset address；
According to offset address, each video frame and each audio frame are grouped respectively；
The offset address write-in of each video frame packet is repaired in the stco box that video frame is corresponded in file；
The offset address write-in of each audio frame packets is repaired in the stco box that audio frame is corresponded in file；
Grouping information is write in the stsc box for repairing file；
By type in video and audio frame set for can frame number of the video frame in sets of video frames of random read take frame write
In the stss box for repairing file；
By with reference to video tkhd box, stsd box, the data in stts box are respectively written into and repair the tkhd of file
In box, stsd box, stts box.
Embodiment one
Fig. 3 is refer to, the embodiment of the present invention one is：A kind of restorative procedure of MP4 damages file, includes the following steps：
S1：It obtains with reference to video；Obtain that same equipment records can normal play video file.
S2：Obtain the sequence parameter set with reference to video；Specifically, it is 7 to decode types value in the reference video
Network abstraction layer unit obtains sequence parameter set, that is, obtains the NAL unit that NAL TYPE are 7.
S3：Using n-th of the byte damaged in file as current byte；The initial value of n is 1.
S4：Judge whether n+8 is more than the total bytes of damage file, if so, represent that damage file has traveled through, video
Frame, which has extracted, to be finished, and step S11 is performed, if it is not, then performing step S5.
S5：Obtain the byte data that the length using current byte as starting point is eight bytes；
S6：It is decoded according to byte data described in the sequential parameter set pair, i.e., the letter provided according to sequence parameter set
Breath is decoded byte data, judges whether successfully decoded, if so, step S8 is performed, if it is not, then performing step S7.
S7：N=n+1 is made, performs step S3；
S8：The byte data is judged for slice header (Slice Header), according to preceding four bytes of the slice header
The corresponding video frame of the slice header is obtained, and the frame of type of strip (slice_type) and video frame is obtained according to decoding result
Number (frame_num).
Since a frame video image can be encoded to one or several bands (Slice), above-mentioned steps are i.e. in damage text
Traversal finds the Slice of the frame head comprising video frame in part, due to the length of four byte representation video frame of frame head,
Can corresponding video frame be got according to preceding four bytes of the Slice, then obtain the video frame from the Slice
Slice_type and frame_num.
S9：Judge whether the video frame is legal video frame, if so, step S10 is performed, if it is not, then abandoning institute
Video frame is stated, search damage file is then proceeded to, that is, performs step S7.Specifically, if the value of the slice_type is in 0-9
And frame number is continuous, then it is legal video frame to judge the corresponding video frame of the slice header.
Until signified frame number in the step continuously refers to current video frame, the frame number of the video frame in same period
It is continuous and complete.
The frame_num of video frame is loop cycle, per second to have 30 videos by taking frame per second is 30 video as an example
Frame, then frame_num loop cycles in 0-29, that is to say, that frame_num represents the video frame for the of the second (cycle)
Frame_num+1 video frame.
Therefore, the signified frame number in the step continuously specifically refer to be in the same second with the video frame and frame number be less than
The frame number of the video frame of the frame number of the video frame is the continuous complete and frame number of the video frame and the frame number of a upper video frame
Continuously, that is to say, that if within the current frame number cycle, the frame number before the frame number be it is continuous complete, and the frame number with it is upper
One frame number is also continuous, then it is assumed that frame number is continuous.If frame number is discontinuous, then it represents that has tomography.
For example, it is assumed that the frame_num for getting the frame of a certain second is followed successively by 0,1,2,3,5,6,7 ... 28,29, then can incite somebody to action
The frame that frame_num is 5-29 all abandons.Discarding scope only limits the data in 1 second, and the frame of next second will rejudge it continuously
Property.
S10：The legal video frame is added in sets of video frames；Search damage file is then proceeded to, that is, performs step
Rapid S7.Further, in the step S7 returned herein, the total bytes of video frame legal described in n=n+ can be made, perform step
S3, first character section that will be after the video frame can improve traversal speed, so as to improve remediation efficiency as current byte.
S11：The audio frame in damage file is obtained, obtains audio frame set；According to the storage rule of video and audio frame, usually
To store an audio frame behind a key frame, audio frame and video frame are staggeredly stored, therefore will two-by-two be regarded in damage file
Frame between frequency frame is obtained as audio frame, that is to say, that by all video frame extractions it is complete after, remaining data are sound
Frequency evidence.Further, obtain audio frame to be afterwards decoded it, audio frame set is added in if successfully decoded, if decoding
Failure then abandons.
S12：Audio frame in video frame in the sets of video frames and audio frame set is ranked up according to offset,
Obtain video and audio frame set；For each elements A in sets of video frames VS and audio frame set ASiAnd Vi, comprising two categories
Property, it is respectively list item offset ENTRYOFFSET and list item size ENTRYSIZE, wherein, list item offset ENTRYOFFSET is
Compared with the offset of damage file initial address.
S13：According to described with reference to video and the video and audio frame set, obtain repairing file.
Specifically, first create and repair file；For ftyp box, if file is repaired there are ftyp box, from the ginseng
It is write according to acquisition ftyp data in video, and by the ftyp data in the ftyp box for repairing file.
For mdat box, for storing video and audio frame；The header information of mdat box includes the length and " mdat of mdat
Four characters of box " therefore, calculate the total length of the video and audio frame in the video and audio frame set, as the length of mdat, so
It is the header information that can obtain mdat box plus " mdat box " four characters afterwards；Then the head of the mdat box is believed
Video and audio frame write-in in breath and the video and audio frame set is repaired in the mdat box of file.
For the mvhd box in moov box, for resting period scale (timescale) and duration
(duration), the value that duration divided by time scale obtain is the total duration of video, and unit is the second；Time scale can be with
It is extracted in mvhd box from reference to video；And for duration, it first obtains and regards in the stts box from reference to video
Then the totalframes of video frame in video and audio frame set is multiplied by the single frames duration, i.e., by the single frames duration of frequency frame
The duration of video frame is can obtain, in the present embodiment, using the duration of video frame as the duration of video file；Most
The time scale and duration write-in are repaired in the mvhd box of file afterwards.
For the tkhd box in moov box, emphasis update video resolution information, resolution ratio sets mistake that can cause
Play flower screen.If directly obtaining resolution information from the tkhd box with reference to video using the resolution ratio with reference to video,
And it writes in the tkhd box for repairing file.If being reset to resolution ratio, it is preferable that be arranged to 1080P or
720P。
For the stsd box in moov box, which includes decoding necessary information, and decoding can errors excepted be caused to be lost
It loses, is write from reference to video dubbing.
For the stts box in moov box, for storing video and audio frame duration, write from reference to video dubbing.
For the stsz box in moov box, for storing the length of video and audio frame；In moov box, there are two
Stsz box, the length for being used to store video frame, another is used to store the length of audio frame；Therefore, described sound will be regarded
The length write-in of each video frame is repaired in the stsz box that video frame is corresponded in file in frequency frame set；By the video and audio frame collection
The length write-in of each audio frame is repaired in the stsz box that audio frame is corresponded in file in conjunction.
For the stco box in moov box, for storing the offset address of video and audio frame, in moov box, exist
Two stco box, an offset address for being used to store video frame, another is used to store the offset address of audio frame.
According to the size of the offset of each video frame and each audio frame and ftyp box in the video and audio frame set and
Each video frame and each audio frame is calculated in the video and audio frame set in the reparation file in the head size of mdat box
In offset address；Specific calculating process is as follows：
Assuming that HS={ H1,H2,H3,....,HnRepresent video and audio frame set, i.e. HS=AS ∪ US, wherein HnIt presses
ENTRYOFFSET is ranked up from small to large；Assuming that CS={ C1,C2,C3,....,CnRepresent to repair video and audio frame in file
Set, each Elements CiENTRYOFFSET and list item size ENTRYSIZE is deviated comprising list item；Assuming that C1o……CnoIt represents
The ENTRYOFFSET of element, C in set CS1s……CnsRepresent that the ENTRYSIZE of element in set CS, i.e. subscript o are represented
ENTRYOFFSET, subscript s represent ENTRYSIZE；Assuming that the size of ftyp box is F, the head size of mdat box is M；Knot
Close assumed above, the calculation formula for obtaining video and audio vertical shift address is as follows：
Further, the calculation formula of the length of video and audio frame is as follows：
Cns=Hns
After the offset address of each video frame and each audio frame is calculated, it is grouped further according to offset address, it will be inclined
It moves the continuous video frame in address and is divided into one group, the continuous audio frame of offset address is divided into one group；Then by each video frame packet
Offset address write-in repair and correspond in file in the stco box of video frame, the offset address of each audio frame packets is write and is repaiied
In the stco box that audio frame is corresponded in multiple file.
For the stsc box in moov box, then above-mentioned grouping information write-in is repaired in the stsc box of file；
For the stss box in moov box, the type (NAL TYPE) of video frame in video and audio frame set is obtained, such as
Fruit video frame be can random read take frame, then by the video frame in sets of video frames frame number write-in repair file stss
In box.
The present embodiment can make differentiation by using defective frame recognizer to the completeness and efficiency of video frame,
By only obtaining legal video frame, so as to greatly improve video repairing effect, avoid the presence of flower screen after repairing；It is logical
It crosses video and audio to interlock differential data extracting method, frame that will be two-by-two between video frame is obtained as audio frame, can be effective
Voice data in video is repaired, greatly improves audio repairing effect with repairing supporting rate.
Embodiment two
The present embodiment is a kind of computer readable storage medium of corresponding above-described embodiment, is stored thereon with computer journey
Sequence realizes following steps when described program is executed by processor：
It obtains with reference to video；
Obtain the sequence parameter set with reference to video；
According to the sequence parameter set, the slice header in damage file is decoded, obtains type of strip and video frame
Frame number；
If the value of the type of strip is in default scope and frame number is continuous, the corresponding video of the slice header is judged
Frame is legal video frame；
Video frame legal in damage file is obtained, obtains sets of video frames；
The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；
Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, is obtained
Video and audio frame set；
According to described with reference to video and the video and audio frame set, obtain repairing file.
Further, described " obtaining the sequence parameter set with reference to video " is specially：
The network abstraction layer unit that types value is 7 in the reference video is decoded, obtains sequence parameter set.
Further, it is described " according to the sequence parameter set, the slice header in damage file to be decoded, obtains item
The frame number of belt type and video frame " is specially：
Using the first character section damaged in file as current byte；
Obtain the byte data that the length using current byte as starting point is eight bytes；
It is decoded according to byte data described in the sequential parameter set pair；
If decoding failure, using next byte of current byte as current byte, the acquisition is continued to execute with current
The step of byte is the byte data that the length of starting point is eight bytes；
If successfully decoded, using the byte data as slice header, obtained according to preceding four bytes of the slice header
The corresponding video frame of the slice header, and the frame number of type of strip and video frame is obtained according to decoding result.
Further, it is described " if the value of the type of strip is in default scope and frame number is continuous, to judge the item
Corresponding video frame is taken the lead as legal video frame " after, further comprise：
Using next byte of current byte as current byte, length of the acquisition using current byte as starting point is continued to execute
The step of spending the byte data for eight bytes.
Further, described " according to described with reference to video and the video and audio frame set, obtaining repairing file " is specially：
It creates and repairs file；
If repairing file there are ftyp box, from described with reference to obtaining ftyp data in video, and by the ftyp numbers
In the ftyp box that file is repaired according to write-in；
The total length of the video and audio frame in the video and audio frame set is calculated, and mdat box are obtained according to the total length
Header information；
File is repaired into video and audio frame write-in in the header information of the mdat box and the video and audio frame set
In mdat box；
Time scale is obtained in mvhd box from reference to video；
The single frames duration of video frame is obtained from reference to the stts box in video；
According to the totalframes of video frame in the single frames duration of the video frame and the video and audio frame set, obtain
Duration；
The time scale and duration write-in are repaired in the mvhd box of file；
The length write-in of each video frame in the video and audio frame set is repaired to the stsz box that video frame is corresponded in file
In；
The length write-in of each audio frame in the video and audio frame set is repaired to the stsz box that audio frame is corresponded in file
In；
According to the size of the offset of each video frame and each audio frame and ftyp box in the video and audio frame set and
Each video frame and each audio frame is calculated in the video and audio frame set in the reparation file in the head size of mdat box
In offset address；
According to offset address, each video frame and each audio frame are grouped respectively；
The offset address write-in of each video frame packet is repaired in the stco box that video frame is corresponded in file；
The offset address write-in of each audio frame packets is repaired in the stco box that audio frame is corresponded in file；
Grouping information is write in the stsc box for repairing file；
By type in video and audio frame set for can frame number of the video frame in sets of video frames of random read take frame write
In the stss box for repairing file；
By with reference to video tkhd box, stsd box, the data in stts box are respectively written into and repair the tkhd of file
In box, stsd box, stts box.
In conclusion the restorative procedure and storage medium of a kind of MP4 damages file provided by the invention, by using defect
Frame recognizer can make differentiation to the completeness and efficiency of video frame, by only obtaining legal video frame, so as to big
Width improves video repairing effect, avoids the presence of flower screen after repairing；Interlocked differential data extracting method by video and audio,
Frame that will be two-by-two between video frame is obtained as audio frame, effectively the voice data in video can be repaired, greatly
Width improves audio repairing effect with repairing supporting rate.The present invention can integrally improve the repairing effect of MP4 damage files and repair branch
Holdup.
The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made directly or indirectly are used in relevant technical field, similarly include
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of restorative procedure of MP4 damages file, which is characterized in that including：
It obtains with reference to video；
Obtain the sequence parameter set with reference to video；
According to the sequence parameter set, the slice header in damage file is decoded, obtains the frame of type of strip and video frame
Number；
If the value of the type of strip is in default scope and frame number is continuous, judge that the corresponding video frame of the slice header is
Legal video frame；
Video frame legal in damage file is obtained, obtains sets of video frames；
The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；
Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, obtains regarding sound
Frequency frame set；
According to described with reference to video and the video and audio frame set, obtain repairing file.
2. the restorative procedure of MP4 damages file according to claim 1, which is characterized in that described " to obtain the reference to regard
The sequence parameter set of frequency " is specially：
The network abstraction layer unit that types value is 7 in the reference video is decoded, obtains sequence parameter set.
3. the restorative procedure of MP4 damages file according to claim 1, which is characterized in that described " to be joined according to the sequence
Manifold is decoded the slice header in damage file, obtains the frame number of type of strip and video frame " be specially：
Using the first character section damaged in file as current byte；
Obtain the byte data that the length using current byte as starting point is eight bytes；
It is decoded according to byte data described in the sequential parameter set pair；
If decoding failure, using next byte of current byte as current byte, the acquisition is continued to execute with current byte
The step of length for starting point is the byte data of eight bytes；
If successfully decoded, using the byte data as slice header, according to obtaining preceding four bytes of the slice header
The corresponding video frame of slice header, and the frame number of type of strip and video frame is obtained according to decoding result.
4. the restorative procedure of MP4 damages file according to claim 3, which is characterized in that described " if the type of strip
Value is in default scope and frame number is continuous, then judge the corresponding video frame of the slice header be legal video frame " after,
Further comprise：
Using next byte of current byte as current byte, continuing to execute length of the acquisition using current byte as starting point is
The step of byte data of eight bytes.
5. the restorative procedure of MP4 damages file according to claim 1, which is characterized in that described " to be regarded according to the reference
Frequency and the video and audio frame set obtain repairing file " be specially：
It creates and repairs file；
If repairing file there are ftyp box, from described with reference to acquisition ftyp data in video, and the ftyp data are write
In the ftyp box for entering to repair file；
The total length of the video and audio frame in the video and audio frame set is calculated, and the head of mdat box is obtained according to the total length
Portion's information；
Video and audio frame write-in in the header information of the mdat box and the video and audio frame set is repaired to the mdat of file
In box；
Time scale is obtained in mvhd box from reference to video；
The single frames duration of video frame is obtained from reference to the stts box in video；
According to the totalframes of video frame in the single frames duration of the video frame and the video and audio frame set, continued
Duration；
The time scale and duration write-in are repaired in the mvhd box of file；
The length write-in of each video frame in the video and audio frame set is repaired in the stsz box that video frame is corresponded in file；
The length write-in of each audio frame in the video and audio frame set is repaired in the stsz box that audio frame is corresponded in file；
According to the size and mdat of the offset of each video frame and each audio frame and ftyp box in the video and audio frame set
Each video frame and each audio frame is calculated in the video and audio frame set in the reparation file in the head size of box
Offset address；
According to offset address, each video frame and each audio frame are grouped respectively；
The offset address write-in of each video frame packet is repaired in the stco box that video frame is corresponded in file；
The offset address write-in of each audio frame packets is repaired in the stco box that audio frame is corresponded in file；
Grouping information is write in the stsc box for repairing file；
By type in video and audio frame set for can frame number of the video frame in sets of video frames of random read take frame write and repair
In the stss box of file；
By with reference to video tkhd box, stsd box, the data in stts box be respectively written into repair file tkhd box,
In stsd box, stts box.
6. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that described program is by processor
Following steps are realized during execution：
It obtains with reference to video；
Obtain the sequence parameter set with reference to video；
According to the sequence parameter set, the slice header in damage file is decoded, obtains the frame of type of strip and video frame
Number；
If the value of the type of strip is in default scope and frame number is continuous, judge that the corresponding video frame of the slice header is
Legal video frame；
Video frame legal in damage file is obtained, obtains sets of video frames；
The frame between video frame two-by-two is obtained in damage file, obtains audio frame set；
Audio frame in video frame in the sets of video frames and audio frame set according to offset is ranked up, obtains regarding sound
Frequency frame set；
According to described with reference to video and the video and audio frame set, obtain repairing file.
7. computer readable storage medium according to claim 6, which is characterized in that described " to obtain described with reference to video
Sequence parameter set " be specially：
The network abstraction layer unit that types value is 7 in the reference video is decoded, obtains sequence parameter set.
8. computer readable storage medium according to claim 6, which is characterized in that described " according to the sequential parameter
Collection is decoded the slice header in damage file, obtains the frame number of type of strip and video frame " be specially：
Using the first character section damaged in file as current byte；
Obtain the byte data that the length using current byte as starting point is eight bytes；
It is decoded according to byte data described in the sequential parameter set pair；
If decoding failure, using next byte of current byte as current byte, the acquisition is continued to execute with current byte
The step of length for starting point is the byte data of eight bytes；
If successfully decoded, using the byte data as slice header, according to obtaining preceding four bytes of the slice header
The corresponding video frame of slice header, and the frame number of type of strip and video frame is obtained according to decoding result.
9. computer readable storage medium according to claim 8, which is characterized in that described " if the type of strip
Value is in default scope and frame number is continuous, then it is legal video frame to judge the corresponding video frame of the slice header " after, into
One step includes：
Using next byte of current byte as current byte, continuing to execute length of the acquisition using current byte as starting point is
The step of byte data of eight bytes.
10. computer readable storage medium according to claim 6, which is characterized in that described " according to described with reference to video
With the video and audio frame set, obtain repairing file " be specially：
It creates and repairs file；
If repairing file there are ftyp box, from described with reference to acquisition ftyp data in video, and the ftyp data are write
In the ftyp box for entering to repair file；
The total length of the video and audio frame in the video and audio frame set is calculated, and the head of mdat box is obtained according to the total length
Portion's information；
Video and audio frame write-in in the header information of the mdat box and the video and audio frame set is repaired to the mdat of file
In box；
Time scale is obtained in mvhd box from reference to video；
The single frames duration of video frame is obtained from reference to the stts box in video；
According to the totalframes of video frame in the single frames duration of the video frame and the video and audio frame set, continued
Duration；
The time scale and duration write-in are repaired in the mvhd box of file；
The length write-in of each video frame in the video and audio frame set is repaired in the stsz box that video frame is corresponded in file；
The length write-in of each audio frame in the video and audio frame set is repaired in the stsz box that audio frame is corresponded in file；
According to the size and mdat of the offset of each video frame and each audio frame and ftyp box in the video and audio frame set
Each video frame and each audio frame is calculated in the video and audio frame set in the reparation file in the head size of box
Offset address；
According to offset address, each video frame and each audio frame are grouped respectively；
The offset address write-in of each video frame packet is repaired in the stco box that video frame is corresponded in file；
The offset address write-in of each audio frame packets is repaired in the stco box that audio frame is corresponded in file；
Grouping information is write in the stsc box for repairing file；
By type in video and audio frame set for can frame number of the video frame in sets of video frames of random read take frame write and repair
In the stss box of file；
By with reference to video tkhd box, stsd box, the data in stts box be respectively written into repair file tkhd box,
In stsd box, stts box.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961193A (en) * | 2018-08-10 | 2018-12-07 | 厦门市美亚柏科信息股份有限公司 | A kind of image repair method, device and storage medium |
| CN110662084A (en) * | 2019-10-15 | 2020-01-07 | 北京齐尔布莱特科技有限公司 | MP4 file stream live broadcasting method, mobile terminal and storage medium |
| CN110740391A (en) * | 2019-10-31 | 2020-01-31 | 四川效率源信息安全技术股份有限公司 | method for repairing MP4 damaged files |
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| WO2020192012A1 (en) * | 2019-03-28 | 2020-10-01 | 腾讯音乐娱乐科技（深圳）有限公司 | Data processing method and apparatus, and storage medium |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020152440A1 (en) * | 2000-10-27 | 2002-10-17 | Ilan Yona | Apparatus and method for improving the quality of video communication over a packet-based network |
| US20050089102A1 (en) * | 2002-02-21 | 2005-04-28 | Roberto Alvarez Arevalo | Video processing |
| CN103327362A (en) * | 2013-05-24 | 2013-09-25 | 武汉东信同邦信息技术有限公司 | High reliability streaming medium memory system and method thereof |
| CN104598328A (en) * | 2015-02-04 | 2015-05-06 | 南车株洲电力机车研究所有限公司 | File system repair method, device and system |
| CN104768025A (en) * | 2015-04-02 | 2015-07-08 | 无锡天脉聚源传媒科技有限公司 | Method and device for repairing bad frames in video |
| CN105426262A (en) * | 2014-09-11 | 2016-03-23 | 哈曼国际工业有限公司 | Methods And Systems For Avb Networks |
| CN107273244A (en) * | 2017-06-08 | 2017-10-20 | 深圳市普天宜通技术股份有限公司 | The fault tolerant control method and system of a kind of media file storage |
-
2017
- 2017-12-22 CN CN201711404796.7A patent/CN108093299B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020152440A1 (en) * | 2000-10-27 | 2002-10-17 | Ilan Yona | Apparatus and method for improving the quality of video communication over a packet-based network |
| US20050089102A1 (en) * | 2002-02-21 | 2005-04-28 | Roberto Alvarez Arevalo | Video processing |
| CN103327362A (en) * | 2013-05-24 | 2013-09-25 | 武汉东信同邦信息技术有限公司 | High reliability streaming medium memory system and method thereof |
| CN105426262A (en) * | 2014-09-11 | 2016-03-23 | 哈曼国际工业有限公司 | Methods And Systems For Avb Networks |
| CN104598328A (en) * | 2015-02-04 | 2015-05-06 | 南车株洲电力机车研究所有限公司 | File system repair method, device and system |
| CN104768025A (en) * | 2015-04-02 | 2015-07-08 | 无锡天脉聚源传媒科技有限公司 | Method and device for repairing bad frames in video |
| CN107273244A (en) * | 2017-06-08 | 2017-10-20 | 深圳市普天宜通技术股份有限公司 | The fault tolerant control method and system of a kind of media file storage |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961193A (en) * | 2018-08-10 | 2018-12-07 | 厦门市美亚柏科信息股份有限公司 | A kind of image repair method, device and storage medium |
| CN108961193B (en) * | 2018-08-10 | 2021-04-02 | 厦门市美亚柏科信息股份有限公司 | Image restoration method, device and storage medium |
| WO2020192012A1 (en) * | 2019-03-28 | 2020-10-01 | 腾讯音乐娱乐科技（深圳）有限公司 | Data processing method and apparatus, and storage medium |
| CN110662084B (en) * | 2019-10-15 | 2021-07-09 | 北京齐尔布莱特科技有限公司 | MP4 file stream live broadcasting method, mobile terminal and storage medium |
| CN110662084A (en) * | 2019-10-15 | 2020-01-07 | 北京齐尔布莱特科技有限公司 | MP4 file stream live broadcasting method, mobile terminal and storage medium |
| CN110740391A (en) * | 2019-10-31 | 2020-01-31 | 四川效率源信息安全技术股份有限公司 | method for repairing MP4 damaged files |
| CN110740391B (en) * | 2019-10-31 | 2021-10-26 | 四川效率源信息安全技术股份有限公司 | Method for repairing MP4 damaged file |
| CN110781037A (en) * | 2020-01-02 | 2020-02-11 | 成都易我科技开发有限责任公司 | Method and system for recovering video file in storage medium and readable storage medium |
| CN111063380A (en) * | 2020-01-02 | 2020-04-24 | 南京美乐威电子科技有限公司 | MP4 file generation method, processing device, equipment and storage medium |
| CN113362233A (en) * | 2020-03-03 | 2021-09-07 | 浙江宇视科技有限公司 | Picture processing method, device, equipment, system and storage medium |
| CN113362233B (en) * | 2020-03-03 | 2023-08-29 | 浙江宇视科技有限公司 | Picture processing method, device, equipment, system and storage medium |
| CN112732180A (en) * | 2020-12-29 | 2021-04-30 | 哈尔滨海能达科技有限公司 | Information processing method, processing device, electronic equipment and storage medium |
| CN112732180B (en) * | 2020-12-29 | 2023-04-14 | 哈尔滨海能达科技有限公司 | Information processing method, processing device, electronic equipment and storage medium |
| CN113382189A (en) * | 2021-05-24 | 2021-09-10 | 深圳市爱为物联科技有限公司 | Electronic equipment damaged file repairing method |
| CN113507625A (en) * | 2021-06-22 | 2021-10-15 | 西安理工大学 | Self-adaptive video restoration method |
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| CN114257840A (en) * | 2021-11-26 | 2022-03-29 | 厦门市美亚柏科信息股份有限公司 | Method and system for repairing Matroska format video |
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| CN114007112A (en) * | 2021-11-30 | 2022-02-01 | 四川效率源信息安全技术股份有限公司 | Method for repairing mdat box data error in MP4 video file |
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