TW200522028A - Video file repair method of multimedia video audio optical disk - Google Patents

Abstract

There is provided a video file repair method of a multimedia video audio optical disk, which utilizes the characteristics of a rewritable optical disk recording media in being able to arbitrarily rewrite disk position values. After a video file is recorded, erroneous field value defects of the video file are corrected by a repair mode. According to the method disclosed by the present invention, a video file error generated by the video real-time editing and burning can be reduced so that a film in a playback device can smoothly perform a fast playback action and a time search function, and display correct playback time. Furthermore, the method is suitable for playback devices of different formats.

Description

200522028 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a method for repairing data of an optical recording medium, in particular, to repair a defect of a DVD video content generated in a DVD real-time video editing system. [Previous technology] For the real-time editing and burning platforms of DVD video produced by various manufacturers, on these platforms, the recorded DVD-Video Mode * DVD-Video RM Mode movies will be played on the DVD player. Problems cannot be solved, such as fast-forward video playback, showing the wrong playback time. These problems are all in the DVD's VOBS (Video Ob ject Set) navigation control package (Nav i gat i on Pack) in the playback control information (PCI 'Presentation Control Information) and data search brother information (DSI, Data Search Information) caused by a specific stop cannot be filled with the correct value. For example, in the playback control information (PC I), the video subunit end time (VOBU_E_PTM), End PTM of VOBU in the general information table (PCI-GI 'PCI General Information Table), and the video time The end time of continuous playback of the unit (V0BU_SE_E_PTM, End PTM of sequenCe end in VOBU). These two fields are for recording the time when the playback is terminated, and the two stops inform the DVD decoder of the time when the playback ends. In the data search information (DSI) section, the fields in the 6s I general information table (DSI-GI ’DSI General Information) will be wrong, such as the end position of the audiovisual unit (VOBU —EA) (End

Page 6 200522028 V. Description of the invention (2) address of V0BU), the first reference day end position of the video sub unit (V0BU_1STREF_EA ^ End address of the first Reference Picture in VOBU), the second reference day end position of the video sub unit (V0BU_2NDREF_EA, End address of the second Reference Picture in VOBU), and the third reference daytime end position of the video sub unit (VOBU — 3RDREF — EA, End address of the third Reference Picture in VOBU). due to

The length of each video sub unit (VOBU) is different, so the recorded addresses are also different. As a result, in incompatible players, the function of fast forward or search will not work properly. Implementation. These stop values cannot be controlled in advance in the decoding hardware and software editing technology of the real-time editing and burning platform, because each day and sound are different, which leads to the entire audiovisual unit (v〇BU) The length of p: ck is not -... 帛 Wait until the editing of the entire video sub-order (v_) unit (V 0 B) is completed, then you can know the value of several fields. At present, there are two kinds of solutions that can be used for the buffer method, which is to attack the technical bottleneck. The data, so you must first empty the space to accommodate the audio and video. Navigation Pack)) This magnetic \ navigation package (navigation package ^., Taxi 1U magnetic sector (Sector), wait until the video package (Video Pack) and sound package 6 — # 丄 μ Tateguchi Tateyama, Zeng furnace dagger (Aud i 〇Pack) The information is edited and generated as a navigation package until the Qianwei (i

Pack)) ’will then take the tour package (navigation; ^ package (NaVlgatl〇n

Pack)) This one magnetic field (SectOr)] pack (Navigation) into the reserved position.

$ 7 pages 200522028

However, a method is aimed at the end time of the video subunit (E: PTM) ▲, the video subunit end position (V0BU-EA), the video iff70? The tea test screen end position (v〇m-istref-ea), the video Wu F :, test the end of the day (v〇BU-2NDREF-EA), the second time of the audio and video second end of the test day (V0BU-3RDREF-EA), the end time of the continuous playback of the audio and video sub-unit (v 0M -SE—Ε_ΡΤΜ) These stops can be lighted, because a V0BU requires about 200 Pack (400 KByte), and existing platforms can retain such a large buffer. However, for this V 0 BU and SRI stop, a buffer length of 240 V 0 BU (48 Mbps) is required. For opening such a large buffer, the existing platform technologies cooperate on the entire hardware platform. There is a big bottleneck in coordination. The second method is to fix a V0BU length during real-time editing and burning of rewritable discs. It is known that the encoders of the existing platforms are currently available for real-time welding. Because it is impossible to grasp the length of each ν〇βυ, it is necessary to increase the padding, = (Padding Pack) to control the length of each field in the fixed ν〇Μ. L degree, but this method will reduce the recordable time. In addition, there are too many filled packets, and such a recording quality will cause ... in addition to discontinuities in video and audio, improper control and even mosaicism, which is not feasible for technical solutions. [Summary of the Invention] In order to overcome the above problems, the main purpose of the present invention is to provide a method for repairing video files of media video discs overnight, so as to solve the problem of real-time editing and recording of rewritable second discs such as DVD + RW. Movies made on the platform, such as DVD-Video Mode and DVD + VR Mode, '^ 不

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V. Description of the invention (4) The problem of fast forward and play time display. Therefore, in order to achieve the above purpose, the method for repairing the video file of the present invention is to repair the f recorded by $ 立 夕 MEDIA 立 shirt sound and light ~ $ 立 浐 + + ^ 'The real-time editing and burning platform includes the following Step: Read the — of the optical recording medium. And the file management information and audio and video header information in the δH file system information ^ #: all the audio and video in the audio and video unit and the audio and video m = and the playback time display parameter are placed to repair the fast-forward parameter playback card The fast-forwarding parameters and the box number can be displayed between the following days after Hai-Yannuodi set up to correct the file system information. According to the multimedia search method disclosed in the present invention, the characteristics of the video and audio file restoration method that can be used + the first disc are mainly used, and the optical disc can arbitrarily overwrite the number of bits of the set value of the disc ... for correction. The scenes generated by the programming platform of the wrong column of the audio and video files; Audio and video: The time series can play the functions he should play, which can be ^ $ 八 shirt 片 在 ^ 放 机 τ · Moon Dagger to make fast forward smoothly Playing action,

Time Search function and display the correct playback time. ,fine! The clear features and implementation, together with the illustrations, make the best embodiment. ^ ~ [Embodiment] According to this: Ming: the method of disclosure 'system, first with a CD player, such as _ ^ disc' ° be: audio and video unit (VOB) a all navigation packages j Navigatl ^ P = ck) The required stop value. Then use editing mode to use disc player to insert the disc to correct the real-time video editing and burning,

Page 9 200522028 V. Description of the invention (5) The field cannot be filled with the correct value, the field is correct, to help the smoothness of the video and the reverse playback of the DVD video file, and display the correct playback time. ~ Fast-forward playback of the movie. Please refer to "Figure 1" for the first hundred videos. This is the main flow chart of the method for repairing the audio and video files of the pronunciation disc. The video burning platform starts the repair mode (step 100), and then Start the k-light ^ sound to read the disc information, the disc drive starts to load the disc information, and reads the disc file system in the flood, and the file management information in the file system, and the video file ^ Video Manager Inf0rinati0n ' VMGI) and audiovisual standard times, (VTSI 'Video Title Set Inf〇rmati〇n) (step Xun Xun obtain the start address and end address of the relevant repair booth. Then, ^ all the audiovisual times in the audiovisual standard ^, F the fast-forward parameter and the playback time display parameter required in the unit and the video and audio sub-unit (step 30), and then stop to resume the fast-forward parameter and the playback time display parameter (step 4⑽), Title setting schedule (step 5 0 0) and audio and video title information backup 2 (step 6 0 0), and finally restore the file system (step 7 0). Stomach /, The following details the steps in "Figure 1" Please refer to "Figure 2" for step 2. 0 0 The flowchart of reading the relevant block in the file system. First, load the UDF / IS09 6 6 0 file system into the memory buffer (step 2 1 0), and then look for I SO 9 6 from the memory buffer. Start position of the 6 ^ 0 slot file system, and then look for the start position of reading the file management information (VMGI) from the start position of the I SO 9 6 0 0 file system (step 2 2 0) to use the file management information (VMGI ) Start position from the field of loading the file management information (VMG I) from the disc to the memory buffer (step

200522028 V. Description of the invention (6) 2 21), and then search for Title Search Pointer (TT-SRPT) from the file management information (VMGI) (step 222). Then, from the title search index (TT_SRPT), find the start address of all the video title information (Video Title Set Infommation Start Address, VTSI_SA) (step 23 0), and use the start position of the video title information All addresses of the video title information (VTS I) are loaded into the memory buffer (step 231). After loading the video title information (VTSI) trimming field into the memory buffer, then use the video title information (VTSI) to search the beginning of the entire field of the Video Title Information Management Table (VTS I _MAT) Address (step 240), and then search for the start position and end position of the video unit (V0B), the end position of the video title group (VTS), the end position of the video title information (VTSI), and the video title group Group Title (video Title Set Time Map table (VTS_TMAPT) start position, Video Title Set Menu Cell Address Table (VTS_C_ADT) start position, video title group video sub-unit address table (Video Title Set Video Object Unit Address Map (VTS_V0BU_ADMAP) starting position (step 241). After obtaining the position of the audio and video subunit address table (VTS_V0BU —ADMAP) of the audio and video title group, load the entire block of the audio and video subunit address table (VTS-VOBU —ADMAP) of the audio and video title group into the memory buffer (Step 2 50), and then from the video title unit address of the video title group

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V. Description of the invention (7) The table (VTS_V0BUjDMAP) obtains all video starting positions, and calculates the ending position of the opening (VTS — V0BU — ADMAP) of the opening of the video title group, ν〇Βίπ α 卞 疋 仞 h The number of the table 3 (V0BU) at the address 3111 (step 2 60). The sub-unit knows all the video sub-orders (VOBU — SA, VOBU Start Address) by using the video sub-unit position table (VTS_V0BU-ADMAP) of the video title. Where the starting position can be quickly searched and read the video The secondary unit (V0BU) is proud of / uses this square speed. Need to modify the parameters, the number of 5 bags (the day and day to get the start position of all video and audio sub-units (V0BU) to take the video and audio sub-units (V0BU) need to modify the parameters of the calculation of 2 ', then start to include display control information (PC I) Parameter Video Times I-'These parameters VOBU — Ε — ΡΤΜ）, VOBU — SE — Ε — ΡΤΜ, information search: ^ End-of-day audio unit end position (V0BU-EA), audio and video order ^ ^ ⑽〇 plane end position (VOBU — 1STREF — ΕΑ), audio and video order 70 ^ th ^ reference ^ reference plane end position (V0BU-2NDREF — Ε), audio and video sub unit end position (VOBU — 3RDREF — ΕΑ), VOB —V —E —PTM, VOB_A—STP—PTM, and so on. When the player moves to the beginning of the audio sub unit (V0BU), first load the 'Dragon Package (Navigation Pack) and read the audio and video of the audio sub unit (v〇BU) in the data search information (DSI). Secondary unit start time (V0BU_S_PTM). Because the video subunit start time (V0BU_S_PTM) of the nth navigation pack (Navigation Pack) is equal to the (n-1) video subunit end time

Page 12 200522028 V. Description of the invention (8) (V0BU-E-PTM). Similarly, the end position of the ηth video sub-unit (V0BU-EAA) is equal to the η + 1th [(VOBU Start Address)-1]. The V0B_SE_E_PTM is equal to the end time of the audiovisual subunit (VOBU_Ε_ΡΤΜ) of the last audiovisual subunit (γ〇βυ). According to the above rule ', please refer to "Figure 3" for a flowchart of reading the required modification parameters. First, 'start reading the count of the parameters of the video unit V 〇β (step 3 1 0)' These parameters include the end time of the video sub unit VOBU-E-PTM), the end position of the video sub unit (ν〇βϋ_ΕΑ), A reference day end position (VQBU — iSTREF Ε), a second reference picture end position of the video sub unit (VOBU — 2NDREF_EA), a third reference day end position of the video sub unit (VOBU — 3RDREF_EA), and a continuous playback end time of the video unit (V0B-SE —E_PTM) and so on. Let the initial value of the buffer index be 0 (step 32 ()), and determine whether the current buffer index value is less than the number of V0BUs (step 321) to determine whether all V0BUs have been read. Then use the audio and video subunit location table (VTS_V0BU_ADMAP) of the video title to obtain the current starting position of v0BU (step 3 3 0). The current V0BU index value is the same as the current buffer index value. 'From the audio and video title of the audio and video subunit location table, VTS_V0BU-ADMAP) field uses the next v0BU start position -i equals the end position of this V0BU to obtain the current v0B {^ final position ( Step 331). After obtaining the start and end positions, the navigation pack is loaded with the start position of ... ⑽ (step 3 3 2). Then, get the start time of the audiovisual subunit from the PCI / PCI-GI block of the loaded navigation pack (NavigatiOn Pack).

Page 13 200522028 V. Description of the invention (9) (VOBU — S — PTM) (steps 3 3 3). The end of the previous video and audio sub unit is learned from the parameter of the start time of this video and audio sub unit (VOBU-S — PTM). Time (V0BU-E-PTM) value (step 334). Then read the data search information (DSI) parameters (step 340). After the reading is completed, the index value is buffered + 1 (step 3 6 0), and then the above process is continued. For the detailed process of reading data search information (DS I) parameters, please refer to "Figure 4". When the video sub unit start time (vobu —S —PTM) / video sub unit end position (VOBU —EA) Data is read, Start to load the Pack judgment in yOfU to obtain the data search information (DSI) parameters: video t, 70 first reference day end position (V0BU — 1STREF — EA), video-backorder το second reference day end position (V 〇bu_2NDREF — EA), the video-audio short order, and the third reference day end position (VOBU — 3RDREF — EA). ^ First load the next pack from v〇BU (step 341), then check whether it is a firSt reference image

Picture) (step 342) and whether it is the end position of the first reference image (step 343). If yes, then make the first reference day end position C VOBU-1STREF —EA of the audiovisual subunit equal to the count number (step 骒). ,,, ° 344) 'If not, repeat step 341. Then continue to load the next packet (step 3 4 5) 'and add 1 to the counter value to determine | Illegal second moxibustion 1 & 沓 is a second reference picture (step 34 6) And yes and no is the end position of the second reference image (step 347), if a, then the second reference day end position (Vogu ^ 2NDREF-EΑ) of the video sub unit is equal to the number of counts (step 348). ~. Shed, then

200522028 V. Description of the Invention (ίο) Repeat step 345. Then continue to load the next pack (step 34 :), and increase the value of the counter! To determine whether it is the 讣 yd ref erence Plcture) (step 35) and ^. 结束 芩 test the end position of the image (step 351), it is the 34th 9th, if yes, then the third sub-unit of the audiovisual sub-unit : Face :: complex step V0M—3RDREF—EA) The parameter is equal to the number of counts (once the step is set, and the count is terminated to record the parameters required to start the next v0BU. 3 5 3). That is, when the video / audio subunit / hub end position (VOBU-3RDREF_EA) has been counted, it will terminate a multi-density plane and continue to the next V0BU to count the required parameters, and the count will complete the disc player. ^ The number of counts until all V0BU read in step 3 in "Figure 3" 1 1 φ, 泣 / ^ s ^ r vnRTn λα ^ 1 The value of the right buffer index is greater than the number of V0BU , Then add the value of V__E ΡΤΜ etc. = r vnRT1 ς ΡΤΜ at the end of the video and audio sub-unit, & / Temple at the beginning of a video and audio sub-unit start time (VOBU-S-PTM) number plus one ... Bo,? / 370), and make the last video time: two columns such as · 5 (step ^ said-VOBU FA missing value is equal to the end position of V0B (ox q71, set Q vubu —bA ) Xia Xia (step 371) and let V0B — SE — Ε — ΡΊ1 be the parameter values of the 4 shirts and the day-to-person unit end time (VOBU-E_PTM) step 3 7 2), read the ν〇β parameter in Yuancheng Video sub-unit end time ^ V〇 ^ UrE ~ P ™ l, video sub-unit end position (VOBU —EA), video sub-unit first test day end position (V0M-1STREF-EA), video second reference day End position of the face (V〇BU — 2NDREF — EA), video time order το Second tea test day end position (v〇BU — 3RDREF — EA), V0B_SE — E — PTM number.

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Fuling test "Figure 5", step 410 of repairing the audio and video unit v0B parameters, these parameters include the end time of the audio and video unit (VOfU-E-PTM), the end position of the audio and video unit (ν〇Βϋ-EA) , The first reference screen end position (V〇BU-1STREF — EA), the second reference day end position (V0BU-2NDREF — EA), the third reference screen end position ( V0BU_3RDREF — EA), continuous playback end time of the audio and video unit (VOB —SE —E_PTM), and unit search information (V0BU_SRI) of the audio and video unit. First move to the beginning of V0BU and load the navigation pack (NavigatiOn Pack). Let the initial value of the buffer index be 0 (step 32), and determine whether the current buffer index value is less than the number of V 0 BUs (step 4 2 1) to determine whether all V 0 BUs have been read. If it is greater than, It indicates the v 〇B parameter video sub unit end time (V〇BU_E_PTM), video sub unit end position (V0BU_EA), video sub unit first reference day end position (ν〇βυ_ 1STREF_EA), video sub unit The second reference day-end position (V0BU-2NDREF-EA), the third reference day-end position (VOBU-3RDREF-EA) of the audiovisual unit, V0B ~ SE-E-PTM, V0BU_SRI Table repair is completed (step 4 7 0 ). Then, the current v0Bl ^ start position is obtained by blocking the video subtitle unit position table (VTS_V0BU_ADMAP) of the video title (step 430). The current V0BU index value is the same as the current buffer index value. After obtaining the start position, use the V0BU starts with navigation pack (step 431) °

Page 16 200522028 V. Description of the invention (12) Next repair the ending time (V0BU_E — PTM) of the audiovisual subunit in the display control information table in the display control information (PCI) in the navigation pack and the audiovisual unit Continuous playback end time (V0B-SE-E-PTM) (step 440). Then repair the four parameters of the video search sub-table (DSI — GI) in the data search information (DSI) of the Navigation Pack (VOBU — EA), the first reference day of the video sub-unit End position (v〇BU-1STREF — EA), second reference day end position of audio and video sub-units (v〇M-2NDREF — EA), and third reference day position of audio sub unit (V0BU — 3RDREF-EA) (Step 441), then repair VOM_SRI TabU (step 450), then increase the buffer index by f (step 460), and return to step 421 until all parameters are repaired. Then fix V0M sri in Data Search Information (DSI)

Table ', please refer to "Figure 6", and the unit search information (V0BU — SRI) of the video sub-units generates the entire field parameter, according to the video sub-unit location table of the video title (VTS_V〇BU-ADMAP) to block V0BU Start position. For the current V0BU location, go to the beginning of the V0BU (step 451), such as 24, and then start repair = tea number yw :, the system will fill the next vo_ start position into the fwm Vldeo ( The start position of the next audio and video subunit with audio and video materials FWDI Next (the next audio and video subunit start position and audio and video storage mark) shelf (step 'step 452)' and then fill forward v_ into FWDI (step 45 3 ), Accumulate the previous ν〇β_ starting position = into

200522028 V. Description of the invention (13) Stop at BWDI Video (the start position of the last audio-visual sub-unit with audio and video data) / BWDI Previous (the start position of the previous audio-visual sub-unit and the flag exists) Step 454 , Fill the starting position of the next v0BU into BWDI (step 4 5 5). When the repair is completed, the disc will write the repaired Navigation Pack at the beginning of the Navigation Pack of the same V0BU, and then the repair of this V0BU is completed. Then use the field of the audio and video subunit location table (VTS — V0BU_ADMAP) of the audio and video title to know the next V 0 Β ϋ starting position, so that the disc player can quickly reach the starting position of the next navigation pack (Nav i gat i on Pack) , Continue to repair the required parameters of the next V0BU, until all v0BU reads the repair, then the V0B partial repair is complete. When the V0B part is repaired, and then the VTSI part is repaired, please refer to "Figure 7". First, determine the video title schedule start position (VTS — TMAPT-SA) parameter (step 510), that is, determine whether the video title time table (VTS — TMAPT) (Video Title Set Time Map) field exists. If the video title schedule start position (VTS-TMAPT-SA) parameter is zero, it means that the system parameters have been repaired (step 51 1). If not, use all v〇BU start positions to edit the VTS_TMAPT fields (step 5 20) and generate the video title time set table (step 5 3 0) . After the generation is completed, the video title schedule (VTS_TMAPT) field

200522028 V. Description of the invention (14) Inserted into the VTSI stop (step 54 0) to modify the VTS — EA / VTSI-EA / Audio Title in the Video Title Set Information Management Table (VTSI-MAT) Timetable start position (VTS_TMAPT —SA) / VTS —C_ADT_SA / VTS —V0BU_ADMAP_SA Field length. After the correction is completed, the disc player will then add the VTS-VOBU-ADMAP (Video Title Set Object Unit Address Map) and the video title menu location table (VTS_C_ADT_SA, Video Title) from the VTS I field. Set Cell Address

Table) The entire block is loaded into the memory buffer (step 5 5 0). Then, from the starting position of the video title menu position table (VTS_C — ADT-SA), write the entire stop of the video title schedule (VTS_TMAPT) (step 5 60). Then, from the ending address of the video title schedule (vts_TMAPT), write the entire block of the video title menu location table (VTS_C_ADT-SA) and the video title sub-unit location table (VTS_V0BU_ADMAP) from the memory buffer (step 57). 〇). After the writing is completed, the video title schedule (VTSI_M AT) is finally revised. Load the video title schedule (VTSI-MAT) into the memory buffer 'and modify the ending position of VTS, the ending position of the movie title information (VTSI), the starting position of the entire stop of the movie title schedule (VTS-TMAPT), the movie Title menu position table (VTS — C — ADT_SA) The entire block starts with 2 sets, and the audio and video sub-unit position table (VTS — V0BILADMAP) of the video title starts from the entire position, and then the video title schedule (VTSI ~ MAT) ) Field (step 58) to complete the video title information

Page 19, 200522028 V. Description of the invention (15) Amendments to V T S I. Next, the entire field of the video title information (VTSI) is then copied to the backup file (VTSI-BUP) of the video title information (VTSI) to modify the backup file of the video title information (VTSI). Please refer to "Figure 8", first load the entire field of the video title information (VTS I) into the memory buffer (step 610), then the drive to the start position of the backup file of the video title information (VTSI) (step 6 2 0), using the VTS-EA / VTSI-EA of the video title schedule (VTSI — MAT) to find the start position of the backup file (VTSI-BUP) of the video title information (VTSI), and then the video title information (VTSI) The entire field is written to the location of the backup file (VTSI_BUP) of the video title information (VTSI) (step 630). After the writing is completed, the backup file (VTSI_BUP) of the video title information (VTSI) is partially repaired Done (step 6 40). Finally, after the above parameters are corrected, the U D F / I S 0 966 file system is corrected based on the corrected parameters. Please refer to "Figure 9" for the flowchart. First, load the entire UDF / ISO 9 6 0 file system information from the disc into the memory buffer (step 7 1 0), and read the entire IS 0 9 6 0 file system from the memory buffer. Information, then read the field to find the length of the video title information (VT SI) (step 7 2 0), modify the length of the video title information (VTSI) that has been added to the video title schedule (VTS_TMAPT) block (step 721), Then read and find the block where the length of the VTSI-BUP is located (step 730), and modify the length of the video title information (VTSI) where the video title schedule (VTS-TMAPT) block has been added (step

Page 20 200522028 V. Description of the invention (16) 7 31), then part of the revision of the IS09 6 6 0 file system is completed. Then modify the UDF part of the UDF / IS09660 slot file system, read the entire field information of the UDF from the memory buffer (step 740), and read and find the field location where the recorded video title information (VTSI) and VTSI_BUP information are located. Correct the video title information (VTSI) and the entire stop information of VTSI-BUP (steps 75 0, 751, 7 60, 761), and modify both fields. The video title schedule (VTS-TMAPT) field has been added. Length of the video title information (VTSI), part of the correction of the UDF file system is completed. Then write the modified UDF / IS09 6 6 0 file system from the memory buffer to the disc 'Repair UDF / ISO 9660 File System is completed (step, 7 7 0), then the entire DVD video disc is repaired (step 78〇). The method disclosed in the present invention is applied to a rewritable DVD + RW disc. In the DVD real-time video editing and burning platform, repair is performed after editing and recording. First use the DVD player to write discs, and read all the stop values required for all navigation packs in the V0B. Then in editing mode, use the disc player to write the film to modify and fill in the real-time audio and video editing and burning, you can not fill in the lower limit, to ensure that the entire DVD video file field is correct, assist The smooth playback of audio and video, fast-forward playback of the video, reverse playback of the video shows the correct playback time, etc. According to the method disclosed in the present invention, it is possible to reduce the real-time editing of audio and video stations: errors in the audio and video files, in addition to making their videos play the proper function on the broadcaster ’s audio player & , Ti me Search function and display the correct playback time. Can also be big, I Tian

200522028 V. Description of the invention (17) Increase the compatibility of DVD players between different brands. Although the present invention is disclosed in the foregoing preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art of similarity can make some modifications and retouching without departing from the spirit and scope of the present invention. The scope of patent protection of an invention shall be determined by the scope of patent application attached to this specification.

Page 22 200522028 Schematic illustration of the third party ^ The diagram is the main flow chart of the multimedia video method disclosed in the present invention; the picture of the repair of the video file of Udisk is the main flow of the multimedia video method disclosed in the present invention Figure 3 of the restoration of the video and audio files in the read file is the detailed flow of the multimedia disclosed in the present invention; t. ^ Figure 4 is the read in the main flow of the multimedia stand-alone method disclosed in the present invention Data retrieval 5 ^ θ disc video file repair ^-V ^----· Second pass, process: details of the repair parameters, the process of repairing the groove, and the method for the restoration of the multimedia video disc VOBU disclosed in the present invention The repair data search information in the SRi% process (detailed process of audio repair TaMe; k DSI) = The picture is the repaired video title information in the main process of the multimedia video disclosed by the present invention ^ Video file repair 枉, (VV UI) The detailed flow chart No. 8 is the modified process of repairing the video and audio files in the main process of the multiple methods disclosed in the present invention. The = of the backup file is disclosed by the present invention Multimedia stand, 〃 'main flow of fixes for slaughter f1' shirt fret repair Tagi system which shell hearing the details of the process. Page 23

Claims (1)

200522028 6. Scope of patent application 1. A method for repairing video files of multimedia video discs, used to repair the fast-forward parameters and playback time display parameters of one of the video files recorded by the video editing platform, including the following steps: Take one file system information of the optical recording medium and file management information and video header information in the file system information; read all the video sub units in the video file and the fast-forward that needs to be repaired in the video sub units Parameters and the playback time display parameters; repair the fast forward parameters and the playback time display parameters; and correct the file system information with the fast forward parameters and the playback time display parameters after repair. 2. The method for restoring a video file of a multimedia video disc according to item 1 of the scope of patent application, wherein the step of reading file system information of one of the optical recording media further includes the following steps: Loading the file system information Go to the memory buffer and search for the start position of the file system information; Search for the start position of the file management information from the start position of the file system information; Load the file management information from the start position of the file management information; From the file management information Read a title search index; find the start address of all the video title information from the title search index; load the video title tribute into the memory buffer, and the start position of the entire booth of the video title information management table Address; use the video title information management table to obtain the video title group video Page 24 200522028 6. The starting position of the patent application scope subunit address table; loading the video title group video subunit address table from the start position of the video subunit address table; and · from the video title group The video and audio sub-unit address table obtains the start position of all video and audio sub units and the number of video and audio sub units. 3. The method for restoring a video file of a multimedia video disc as described in item 1 of the scope of patent application, wherein the step of reading all the video sub units in the video file further includes the following steps: obtaining the start of the current video sub unit Position and end position; loading the navigation pack of the AV subunit through the start position to obtain the start time of the current AV subunit and the end time of the previous AV subunit; make the last AV subunit The end time is equal to the start time of the previous video subunit end time plus a predetermined value; let the end position of the last video subunit equal the end position of the video unit; and the continuous playback end time of the video subunit is equal to the last video subunit End position. 4. The method for repairing the video file of the multimedia video disc according to item 3 of the scope of patent application, which further includes a step of reading data and searching for information parameters. 5. The method for restoring the video file of the multimedia video disc as described in item 4 of the scope of patent application, wherein the step of reading the data and searching the information parameters further includes the following steps: Page 25 200522028 Page 26, 200522028 VI. Application for a patent: Fill in the start position of the next video subunit of the current video subunit into the fast-forward parameter; fill in the start positions of the previous multiple and backward multiple video subunits The fast-forwarding parameter; and a start position of the current audio-visual secondary unit above the current audio-visual secondary unit is filled in the fast-forwarding parameter. 8. The method for repairing the video file of the multimedia video disc according to item 7 in the scope of the patent application, wherein the step of repairing the fast-forward parameter and the playback time display parameter further includes the following steps: confirming whether a video title schedule exists ; Generating the video title schedule and fields; inserting the video title schedule fields into the video title information; loading the audio title information into the video title menu location table and the video title unit location table; Write the video title setting schedule into the video title menu position table; write the audio title information from the ending position of the video title setting schedule to load the video title menu position table and the video title sub-unit location table; and load Video title information management table and correct the start position and end position of the block in the management table. 9. The method for repairing the audiovisual file of the multimedia audiovisual disc according to item 8 of the scope of patent application, wherein the step of repairing the fast-forward parameter and the playback time display parameter further includes the following steps: Page 27 200522028 6. The scope of the patent application is to load the video title information into the memory buffer; to the start position of the backup file of the video title information; and write the video title information from the memory buffer into the A backup file of the video title information. 10. The method for restoring a video file of a multimedia video disc as described in item 1 of the scope of patent application, wherein the step of repairing the file system information further includes the following steps: loading the file system from the beginning of the file system information Information; Search for the video title information in the file system information; modify the video title information; search for a backup file of the video title information in the file system information; and fix the backup slot. Page 28