CN102946542B - Mirror image video interval code stream recompile and seamless access method and system are write - Google Patents
Mirror image video interval code stream recompile and seamless access method and system are write Download PDFInfo
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- CN102946542B CN102946542B CN201210527612.7A CN201210527612A CN102946542B CN 102946542 B CN102946542 B CN 102946542B CN 201210527612 A CN201210527612 A CN 201210527612A CN 102946542 B CN102946542 B CN 102946542B
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Abstract
The invention provides one and write mirror image video interval code stream recompile and seamless access method and system, comprising: according to the first initial point of the fragment of rearranging of user's setting and the quantity N of the first end point acquisition first bag; The coding parameter recompile the first initial point provided according to user to the video segment of the first end point until meet the perceived quality standard of user, to obtain the second starting point and second end point of new video segment; The quantity M of the second bag is obtained according to the second starting point and the second end point; Quantity M according to the first initial point and the first end point, the second starting point and the second end point and the first quantity N wrapped and second bag carries out seamless access adjustment; Navigation information before upgrading the second starting point and after the second end point.When the video quality of user to the mirror image write is unsatisfied with, only need carries out recompile to unsatisfied video segment and seamless access generation mirror image, save a large amount of human and material resources and time.
Description
Technical field
The present invention relates to image information and write process field, particularly one has write mirror image video interval code stream recompile and seamless access method and system.
Background technology
Write in process field in image information, the emergence and development of digital video compaction technique has profound significance, solves the problem that huge video data stores and transmission is programmed, digital video service is developed widely.
In the prior art, coding/decoding module often adopts digital video compaction technique, usually time prediction coding is adopted to most frame, namely usually said P frame (" P " refers to forward direction time prediction), B frame (" B " refers to two-way time prediction).A part in compression process only make use of the spatial redundancy of the single image in frame, and this frame of any interframe encode that do not use is called I frame (" I " refers to intraframe coding).
In addressing system, usually adopt LBA (LogicalBlockAddressing, lba).Under lba pattern, a data area on hard disk is by the magnetic head at its place, cylinder (namely magnetic track) and sector are uniquely determined, and in lba addressing, address no longer represents the actual physical address (cylinder of actual hard disk, magnetic head and sector), lba addressing mode changes this three-dimensional addressing manner the linear addressing of one dimension into, it is the magnetic head of physical sectors all for hard disk, the numbering of cylinder and sector is a linear numbering by certain rules back, system effectiveness is greatly enhanced, avoid loaded down with trivial details magnetic head, the addressing system of cylinder and sector.When access hard disk, more this logical address is converted to the physical address of actual hard disk by hard disk controller.
Instantly; the video use that oneself can take by many users is write software and is write into digital versatile disc (DigitalVersatileDisc; DVD)/media processing (CHD) mirror image (comprise but not only for DVD/CHD); but user often there will be and is unsatisfied with the video quality of the mirror image write, need the situation adjusting its quality.Traditional software of writing is met this situation and is often dealed with without plan, and need carry out recompile to whole video and generate mirror image, this will a large amount of human and material resources of cost and time.
Summary of the invention
The invention provides one and write mirror image video interval code stream recompile and seamless access method and system, solve when the video quality of user to the mirror image write is unsatisfied with, need carry out recompile to whole video and generate mirror image, thus spend a large amount of human and material resources and the problem of time.
The technical scheme that the present invention adopts for its technical problem of solution is:
One has write mirror image video interval code stream recompile and seamless access method, comprising:
According to the first initial point of the fragment of rearranging of user's setting and the quantity N of the first end point acquisition first bag; Wherein, N is positive integer;
The coding parameter recompile the first initial point provided according to user to the video segment of the first end point until meet the perceived quality standard of user, to obtain the second starting point and second end point of new video segment;
The quantity M of the second bag is obtained according to described second starting point and the second end point; Wherein M is positive integer;
Quantity M according to described the first initial point and the first end point, described second starting point and the second end point and the described first quantity N wrapped and second bag carries out seamless access adjustment;
Navigation information before upgrading the second starting point and after the second end point.
Optionally, in the recompile of described interval code stream and the method for seamless access, described in fragment of rearranging comprise DVD/CHD mirror image.
Optionally, write in mirror image video interval code stream recompile and seamless access method described, the coding parameter recompile the first initial point provided according to user is to the video segment of the first end point until meet the perceived quality standard of user, with in the step of the second starting point and the second end point that obtain new video segment
When video segment does not meet the perceived quality standard of user, user regulates at least one coding parameter to carry out recompile to described video segment.
Optionally, write in mirror image video interval code stream recompile and seamless access method described, described coding parameter comprises: quantization step and coding bit rate.
Optionally, write in mirror image video interval code stream recompile and seamless access method described, in described each bag, there is packet header, there is in described packet header the information of wrapping self call number.
Optionally, write in mirror image video interval code stream recompile and seamless access method described, the quantity M according to described the first initial point and the first end point, described second starting point and the second end point and the described first quantity N wrapped and second bag carries out seamless access adjustment:
When M is less than N, after described second end point, write (N-M) × 2048bytes individual 0;
When M is greater than N, upgrade call number and the end address of the bag of each bag after described first end point.
Optionally, write in mirror image video interval code stream recompile and seamless access method described, the navigation information in before upgrading the second starting point and after the second end point comprises: the value upgrading latter 120 seconds fields in the navigation information at the second starting point first 120 seconds, 60 seconds, 30 seconds, 10 seconds, 7.5 seconds, 7 seconds, 6.5 seconds, 6 seconds, 5.5 seconds, 5 seconds, 4.5 seconds, 4 seconds, 3.5 seconds, 3 seconds, 2.5 seconds, 2 seconds, 1.5 seconds, 1 second place is the call number of the bag of the second starting point.
Optionally, write in mirror image video interval code stream recompile and seamless access method described, upgrade the second starting point and comprise to the navigation information in the second end point interval: in the navigation information that after upgrading the second end point, 120 seconds, 60 seconds, 30 seconds, 10 seconds, 7.5 seconds, 7 seconds, 6.5 seconds, 6 seconds, 5.5 seconds, 5 seconds, 4.5 seconds, 4 seconds, 3.5 seconds, 3 seconds, 2.5 seconds, 2 seconds, 1.5 seconds, 1 second locates, the value of latter 120 seconds fields is the call number of the bag of the second starting point.
Meanwhile, the present invention also provides one to write mirror image video interval code stream recompile and seamless connecting system, comprising:
First processing module, obtain the quantity N of the first bag in order to the first initial point of fragment of rearranging that sets according to user and the first end point, wherein N is positive integer;
Second processing module, in order to the coding parameter recompile the first initial point that provides according to user to the video segment of the first end point until reach the perceived quality standard of user, to obtain the second starting point and second end point of new video segment;
3rd processing module, in order to obtain the quantity M of the second bag according to described second processing module; Wherein M is positive integer;
4th processing module, in order to carry out seamless access adjustment according to the quantity M of the first initial point of described first processing module and the second bag of the quantity N of the first end point and the first bag, the second starting point of the second processing module and the second end point and the 3rd processing module;
First update module, the navigation information before upgrading the second starting point and after the second end point.
Optionally, write in mirror image video interval code stream recompile and seamless connecting system described, described in fragment of rearranging comprise DVD/CHD mirror image.
Optionally, write in mirror image video interval code stream recompile and seamless connecting system described, described coding parameter comprises: quantization step and coding bit rate.
Optionally, write in mirror image video interval code stream recompile and seamless connecting system described, in described each bag, there is packet header, there is in described packet header the information of wrapping self call number.
Implement one of the present invention and write mirror image video interval code stream recompile and seamless access method and system, there is following beneficial effect: when the video quality of user to the mirror image write is unsatisfied with, user only need carry out recompile to unsatisfied video segment and seamless access generates mirror image, instead of recompile is carried out to whole video, save a large amount of human and material resources and time, substantially increase the efficiency of writing software.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is a kind of structural representation having write mirror image video interval code stream recompile and seamless connecting system of the embodiment of the present invention;
Fig. 2 is a kind of schematic flow sheet having write mirror image video interval code stream recompile and seamless access method of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, mirror image video interval code stream recompile and seamless access method and system further description are write to the one that the present invention proposes.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
Please refer to Fig. 1, it is a kind of structural representation having write mirror image video interval code stream recompile and seamless connecting system of the embodiment of the present invention.As shown in Figure 1, one has write mirror image video interval code stream recompile and seamless connecting system, comprising:
First processing module 11, obtains the quantity N of the first bag (pack) in order to the first initial point of fragment of rearranging that sets according to user and the first end point; Wherein, N is positive integer; Concrete, in each bag, there is packet header, there is in described packet header the information (lba information) of wrapping self call number.
Second processing module 12, in order to the coding parameter recompile the first initial point that provides according to user to the video segment of the first end point until reach the perceived quality standard of user, to obtain the second starting point and second end point of new video segment; Concrete, described coding parameter comprises: quantization step and coding bit rate.
3rd processing module 13, in order to obtain the quantity M of the second bag according to described second processing module 12; Wherein M is positive integer;
4th processing module 14, in order to carry out seamless access adjustment according to the quantity M of the first initial point of described first processing module 11 and the second bag of the quantity N of the first end point and the first bag, the second starting point of the second processing module 12 and the second end point and the 3rd processing module 13;
First update module 15, in order to the navigation information before upgrading the second starting point and after the second end point.
Please refer to Fig. 2, it is the schematic flow sheet writing a kind of interval code stream recompile of mirror image video and seamless access method of the embodiment of the present invention.As shown in Figure 2, one has write mirror image video interval code stream recompile and seamless access method, comprising:
S21: according to the first initial point of the fragment of rearranging of user's setting and the quantity N of the first end point acquisition first bag, wherein, N is positive integer.
Concrete, user can find corresponding video object unit (VideoObjectUnit according to the first initial point of the fragment of rearranging of setting and the first end point, VOBU) starting point and end point, a lot of bags are comprised in described video object unit, the length of a bag is 2048bytes, in described each bag, there is packet header, there is in described packet header the information of wrapping self call number, to sum up the call number+1 of the bag of the call number-the first initial point of the bag of N=first end point.
S22: the coding parameter recompile the first initial point provided according to user to the video segment of the first end point until meet the perceived quality standard of user, to obtain the second starting point and second end point of new video segment.
Concrete, the sequence of pictures obtained, to the video segment of the first end point, is kept in by the first initial point of first decoding;
Then, the coding parameter that temporary sequence of pictures being given encoder provides according to user carries out recompile, and wherein, described coding parameter comprises: quantization step and coding bit rate;
Then the video segment that obtains of user's preview recompile, when video segment does not meet the perceived quality standard of user, then user can regulate at least one coding parameter to carry out recompile to described video segment, until meet the perceived quality standard of user;
Finally, the second starting point and the second end point is obtained according to new video segment.
S23: the quantity M obtaining the second bag according to described second starting point and the second end point, wherein M is positive integer.
Concrete, the call number+1 of the bag of call number-the second starting point of the bag of M=second end point.
S24: the quantity M according to described the first initial point and the first end point, described second starting point and the second end point and the described first quantity N wrapped and second bag carries out seamless access adjustment.
Concrete, when M is less than N, after described second end point, write (N-M) × 2048bytes individual 0;
When M is greater than N, upgrade call number and the end address of the bag of each bag after described first end point; Wherein, PACK.lba_new=PACK.lba_old+ second end point .lba-the first initial point .lba;
PACK. end address _ new=PACK. end address _ old+ second end point. end address-the first initial point. end address; Especially, because firstreferenceframe/secondreferenceframe/thirdreferencef rame/offsetaudiopackforstreamN/offsetsubtitlepackforstre amM in NAVPack (each VOBU is initial with NAVPack) all uses relative value therefore herein without the need to upgrading.
S25: the navigation information (sri) before upgrading the second starting point and after the second end point;
Concrete, the navigation information in before upgrading the second starting point and after the second end point comprises: the value upgrading latter 120 seconds fields in the navigation information at the second starting point first 120 seconds, 60 seconds, 30 seconds, 10 seconds, 7.5 seconds, 7 seconds, 6.5 seconds, 6 seconds, 5.5 seconds, 5 seconds, 4.5 seconds, 4 seconds, 3.5 seconds, 3 seconds, 2.5 seconds, 2 seconds, 1.5 seconds, 1 second place is the call number of the bag of the second starting point.
Concrete, upgrade the second starting point and comprise to the navigation information in the second end point interval: in the navigation information that after upgrading the second end point, 120 seconds, 60 seconds, 30 seconds, 10 seconds, 7.5 seconds, 7 seconds, 6.5 seconds, 6 seconds, 5.5 seconds, 5 seconds, 4.5 seconds, 4 seconds, 3.5 seconds, 3 seconds, 2.5 seconds, 2 seconds, 1.5 seconds, 1 second locates, the value of latter 120 seconds fields is the call number of the bag of the second starting point.
By the combination of said structure, when the video quality of user to the mirror image write (preferably adopting DVD/CHD mirror image in the present embodiment) is unsatisfied with, user only need carry out recompile to unsatisfied video segment and seamless access generates mirror image, instead of recompile is carried out to whole video, save a large amount of human and material resources and time, substantially increase the efficiency of writing software.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection range of claims.
Claims (10)
1. write mirror image video interval code stream recompile and a seamless access method, it is characterized in that, comprising:
According to the first initial point of the fragment of rearranging of user's setting and the quantity N of the first end point acquisition first bag; Wherein, N is positive integer;
The coding parameter recompile the first initial point provided according to user to the video segment of the first end point until meet the perceived quality standard of user, to obtain the second starting point and second end point of new video segment;
The quantity M of the second bag is obtained according to described second starting point and the second end point; Wherein M is positive integer;
Quantity M according to described the first initial point and the first end point, described second starting point and the second end point and the described first quantity N wrapped and second bag carries out seamless access adjustment;
Navigation information before upgrading the second starting point and after the second end point;
Wherein, in described each bag, there is packet header, there is in described packet header the information of wrapping self call number;
Carry out seamless access adjustment according to the quantity M of quantity N and second bag of described the first initial point and the first end point, described second starting point and the second end point and described first bag to comprise:
When M is less than N, after described second end point, write (N-M) × 2048bytes individual 0;
When M is greater than N, upgrade call number and the end address of the bag of each bag after described first end point.
2. according to claim 1ly write mirror image video interval code stream recompile and seamless access method, it is characterized in that, described in fragment of rearranging comprise DVD/CHD mirror image.
3. according to claim 1ly mirror image video interval code stream recompile and seamless access method have been write, it is characterized in that, the coding parameter recompile the first initial point provided according to user is to the video segment of the first end point until meet the perceived quality standard of user, with in the step of the second starting point and the second end point that obtain new video segment
When video segment does not meet the perceived quality standard of user, user regulates at least one coding parameter to carry out recompile to described video segment.
4. according to claim 3ly write mirror image video interval code stream recompile and seamless access method, it is characterized in that, described coding parameter comprises: quantization step and coding bit rate.
5. according to claim 1ly mirror image video interval code stream recompile and seamless access method have been write, it is characterized in that, the navigation information in before upgrading the second starting point and after the second end point comprises: the value upgrading latter 120 seconds fields in the navigation information at the second starting point first 120 seconds, 60 seconds, 30 seconds, 10 seconds, 7.5 seconds, 7 seconds, 6.5 seconds, 6 seconds, 5.5 seconds, 5 seconds, 4.5 seconds, 4 seconds, 3.5 seconds, 3 seconds, 2.5 seconds, 2 seconds, 1.5 seconds, 1 second place is the call number of the bag of the second starting point.
6. according to claim 1ly mirror image video interval code stream recompile and seamless access method have been write, it is characterized in that, upgrade the second starting point and comprise to the navigation information in the second end point interval: in the navigation information that after upgrading the second end point, 120 seconds, 60 seconds, 30 seconds, 10 seconds, 7.5 seconds, 7 seconds, 6.5 seconds, 6 seconds, 5.5 seconds, 5 seconds, 4.5 seconds, 4 seconds, 3.5 seconds, 3 seconds, 2.5 seconds, 2 seconds, 1.5 seconds, 1 second locates, the value of latter 120 seconds fields is the call number of the bag of the second starting point.
7. write mirror image video interval code stream recompile and a seamless connecting system, it is characterized in that, comprising:
First processing module, obtains the quantity N of the first bag in order to the first initial point of fragment of rearranging that sets according to user and the first end point; Wherein, N is positive integer;
Second processing module, in order to the coding parameter recompile the first initial point that provides according to user to the video segment of the first end point until reach the perceived quality standard of user, to obtain the second starting point and second end point of new video segment;
3rd processing module, in order to obtain the quantity M of the second bag according to described second processing module; Wherein M is positive integer;
4th processing module, in order to carry out seamless access adjustment according to the quantity M of the first initial point of described first processing module and the second bag of the quantity N of the first end point and the first bag, the second starting point of the second processing module and the second end point and the 3rd processing module;
First update module, the navigation information before upgrading the second starting point and after the second end point
Wherein, in described each bag, there is packet header, there is in described packet header the information of wrapping self call number;
Carry out seamless access adjustment according to the quantity M of quantity N and second bag of described the first initial point and the first end point, described second starting point and the second end point and described first bag to comprise:
When M is less than N, after described second end point, write (N-M) × 2048bytes individual 0;
When M is greater than N, upgrade call number and the end address of the bag of each bag after described first end point.
8. according to claim 7ly write mirror image video interval code stream recompile and seamless connecting system, it is characterized in that, described in fragment of rearranging comprise DVD/CHD mirror image.
9. according to claim 7ly write mirror image video interval code stream recompile and seamless connecting system, it is characterized in that, described coding parameter comprises: quantization step and coding bit rate.
10. according to claim 7ly write mirror image video interval code stream recompile and seamless connecting system, it is characterized in that, in described each bag, there is packet header, there is in described packet header the information of wrapping self call number.
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| CN1243597A (en) * | 1997-09-17 | 2000-02-02 | 松下电器产业株式会社 | Video data editing apparatus, optical disc for use as recording medium of video data editing apparatus, and computer-readable recording medium storing editing program |
| CN1516977A (en) * | 2001-06-18 | 2004-07-28 | 汤姆森特许公司 | Changig playback speed for video presentation recorded in progressive frame structure format |
| CN1926863A (en) * | 2004-06-27 | 2007-03-07 | 苹果电脑有限公司 | Multi-pass video encoding |
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- 2012-12-07 CN CN201210527612.7A patent/CN102946542B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243597A (en) * | 1997-09-17 | 2000-02-02 | 松下电器产业株式会社 | Video data editing apparatus, optical disc for use as recording medium of video data editing apparatus, and computer-readable recording medium storing editing program |
| CN1516977A (en) * | 2001-06-18 | 2004-07-28 | 汤姆森特许公司 | Changig playback speed for video presentation recorded in progressive frame structure format |
| CN1926863A (en) * | 2004-06-27 | 2007-03-07 | 苹果电脑有限公司 | Multi-pass video encoding |
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