JP2006005956A - Moving image reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving image reproducing device which efficiently reproduces variable length compressed video and audio data at high speed. <P>SOLUTION: In the case of multiplexing compressed video/audio data and recording them on a disk or a semiconductor memory, the leading position of a packet, the starting position of a GOP when the group of a plurality of frames is defined as the GOP, and the end position of at least one or more intra-frame encoded frame for each GOP or the end position of at least one or more forward prediction encoded frame are gathered and a management file is created, and the management file is recorded on the medium separately from the multiplexed data. By referring to the management file, disk reading starting position and ending position are designated, and the multiplexed data are read, and high speed reproduction is carried out. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a rewritable disk medium on which multiplexed data is recorded, in which encoded video data and encoded audio data are multiplexed, or a semiconductor memory in which the multiplexed data is stored. The present invention relates to a moving image recording method used, and particularly relates to a moving image reproducing apparatus that enables high-speed reproduction and high-speed reverse reproduction.

Since video data has a very high data rate, it is difficult to record video data on a disk medium such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory without processing the data.
Therefore, a method is used in which video data and audio data are encoded with high efficiency to reduce the data rate to a rate that can be recorded on a disk medium without visual or auditory degradation.
As an example of the high-efficiency encoding method, there is an MPEG (Moving Picture Experts Group) method.
FIG. 14 shows an example in which a moving image is compressed by the MPEG method.
In the figure, a plurality of parallelograms represent frames constituting a moving image. The process of compressing the moving picture of FIG. 14A by MPEG is shown in FIGS. In MPEG, several frames such as 12 video frames and 15 video frames are collectively called GOP (Group Of Pictures). In FIG. 14B, video frames in the GOP 140 are classified into I frames, P frames, and B frames.
The I frame indicates that intra-frame encoding has been performed, and the P frame indicates that forward prediction encoding from the I frame or forward encoding from P frame has been performed. The B frame is between the I frame and the P frame, or between the P frames, and is predictively encoded from both directions of the I frame and the P frame. As an example, the prediction directions in the P frame 141 and the B frame 142 are indicated by arrows.
In MPEG, the frame order shown in FIG. 14B is changed as shown in FIG. Since P frames and B frames are predictively encoded from I frames or video frames that have been predictively encoded from I frames, in order to decode all video frames in a GOP, it is necessary to first decode from I frames. . That is, when playing back a recorded moving image in the middle of random access or the like, it must be decoded from the I frame.
However, since the code amount of video data compressed by MPEG is not proportional to time in a short time, the video encoded data amount of each frame is not constant, and the recording position of the encoded data of each frame is unique. Not determined. As one of the methods for high-speed reproduction of video encoded data compressed by MPEG, there is a method of extracting several frames from video frames displayed in normal reproduction and displaying only those frames. The disk and the semiconductor memory can reproduce the data recorded in the discontinuous area like continuous data by performing high-speed random access, which is a feature of the disk and the semiconductor memory.
However, in the video encoded data compressed by MPEG, the code amount for each frame is not constant, and the start position of the frame is not known. Therefore, it is difficult to read only frame data used for high-speed reproduction one after another. As a conventional technique for realizing high-speed reproduction using encoded data encoded with high efficiency, there is a method disclosed in Patent Document 1. FIG. 18 shows the structure of multiplexed video and audio data using the prior art described in the above publication.
The video encoded data and audio encoded data are added with an entry packet 200 when multiplexed. The entry packet indicates the start (entry point) of data constituting the I frame, and is placed before the data of the I frame. The format of the entry packet is shown in FIG.
A packet start code, ID, and size are arranged at the head of the entry packet. This is to make the entry packet correspond to the private stream 2 packet defined by the MPEG standard. Next, ***** ID and ***** _ Packet_Type are arranged, and this indicates a classification unique to a specific person. Next, Current _ # _ Data_Streams, Current _ # _ Video_Streams, and Current _ # _ Audio_Streams are arranged. Respectively. Next, entry_packet-3, entry_packet-2, entry_packet-1, entry_packet + 1, entry_packet + 2, entry_packet + 3 are arranged, respectively, 3 before, 2 before, 1 before, 1 ahead, 3 ahead. The position of the previous entry packet and the relative distance between the entry packet and the number of sectors on the disk are managed.
The above conventional coding apparatus is shown in FIG. 20, and the operation will be described with reference to FIG.
The video data encoded by the video encoder 17 is detected by the video entry point detection circuit 212. The control device 219 receives a signal from the video entry point detection circuit 212, controls the entry packet generation circuit 218, the switching circuit 215, and the header addition circuit 216, inserts the entry packet immediately before the entry point, and DSM 213 (Data Storage Media). To record.
At this time, in order to create entry_packet-3, entry_packet-2, and entry_packet-1 in the entry packet, the past entry packet position is stored in the entry point storage device 211. However, since entry_packet + 1, entry_packet + 2, and entry_packet + 3 indicating the positions of future entry points cannot be known, these pieces of information are added after recording multiplexed data.
Next, the conventional decoding apparatus is shown in FIG. 21, and the operation during high-speed search will be described with reference to FIG.
The entry packet information read from the DSM 213 during normal playback is stored in the entry point storage device 211 as needed. When a high-speed search is instructed, the control device 222 receives current read position information from the DSM 213 and extracts an entry packet near the position from the entry point storage device 211. The control device 222 sends a command to the DSM 213 and moves the read position to the entry packet extracted from the entry point storage device 211 to read the data. The header separation circuit 220 and the switching circuit 221 separate the read data, transmit the entry packet position to the entry point storage device 211 through the control device 222, and transmit the video encoded data to the video decoder 22.
The video decoder 22 receives the video encoded data and reproduces the I frame. After the reproduction of the I frame, the control device 222 repeats the operation of referring to the entry packet position stored in the entry point storage device 211 and reading the data of the next entry packet. At this time, the direction of the search can be changed or the search speed can be made variable by selecting the position of the next entry packet from the previous and next six entry point information.
JP-A-6-325553

As described above, since the entry packet in the prior art manages the positions of the preceding and following entry packets, the position of the next (future) entry packet cannot be specified when a moving image is recorded on the recording medium in real time. Multiplexed data including entry packets cannot be created.
Further, the data encoding apparatus stores the entry packet position in a memory in the encoding apparatus, records the multiplexed data, and then appends the entry packet position to the recording medium.
However, since the entry packet is placed before the video encoded data constituting all the I frames, a large number of entry packets exist in the multiplexed data. It takes time to add the information.
Further, in the prior art, after the data following the entry packet is read from the recording medium, the header information of the data is analyzed to determine the end of the data constituting the I frame, and the read position is set to the next entry packet. Move to. For this reason, even if the data constituting the I frame is actually read from the recording medium, it takes time to perform error correction processing and determine the end of the data of the I frame. Longer time and faster search speed.
Furthermore, when an uncorrectable error occurs in a part of the data read from the recording medium, the end of the data constituting the I frame cannot be detected, and the read position is not moved to the next entry packet. Disk control becomes unstable. There were problems such as.
An object of the present invention is to solve the problems of the conventional moving image recording method and reproducing method, and to provide a moving image recording method and reproducing method which solves the problems.

The present invention has taken the following measures in order to solve the problems.
That is, the moving picture reproducing apparatus according to the present invention is a disc-shaped recording in which multiplexed data including at least video encoded data and audio encoded data, and a management file are recorded, which are composed of a plurality of fixed-length blocks. An apparatus for reproducing a medium, wherein the video encoded data is obtained by encoding a video frame group, and when a plurality of video frames are defined as one unit, the video encoded data corresponding to the one unit or the plurality of units is provided. Is the first relative number of blocks from the block where the head data of the multiplexed data is recorded to the first block where the head data of one unit is recorded, and the intra-coded video The end position of the frame is set to the second block in which the last data of the intra-coded video frame is recorded from the first block. The second relative number of blocks until the first data block is recorded, and the first relative block number and the second relative block number are recorded on a recording medium as a management file separately from the multiplexed data. Is.
Also, the moving picture reproducing apparatus according to the present invention is a disc-shaped recording in which multiplexed data including at least video encoded data and audio encoded data composed of a plurality of fixed-length blocks and a management file are recorded. An apparatus for reproducing a medium, wherein video encoded data is obtained by encoding a video frame group, and when a plurality of video frames are defined as one unit and a header is added to each unit or a plurality of units, The start position of one unit is the third relative number of blocks from the block where the head data of the multiplexed data is recorded to the block where the head data of the header is recorded, and the video frame which is intra-coded The end position of the fourth block in which the last data of the intra-coded video frame is recorded from the third block. Up to a fourth relative block number, and the third relative block number and the fourth relative block number are recorded on a recording medium as a management file separately from the multiplexed data. is there.

As described above, in the present invention, when the compressed video data and audio data are multiplexed and recorded on the recording medium, the packet start position, GOP start position, I frame end position, and P frame end position are managed together. By handling the data separately from the multiplexed data, the recording time of the position information is greatly shortened.
In addition, management file data and multiplexed data can be managed separately, simplifying data management, and flexible to future changes such as changing the recording format of management file data. It becomes possible to cope with.
In the present invention, since the time required for reproducing one frame in high-speed reproduction is shortened by referring to the management file and reading multiplexed data from the disk, the reproduction speed is improved or the reproduction speed is increased. Is the same as the conventional one, and smooth playback can be performed to display more frames.
Furthermore, since the control of the disk for reading data from the recording medium does not depend on the read multiplexed data, the control becomes simple, and even if a read error occurs, the control of the disk may become unstable. The tolerance to data errors is increased.

First, a block diagram of an embodiment of a moving image recording method is shown in FIG.
FIG. 1 shows an example of a block diagram constituting a moving image recording apparatus, and includes a disk 10, a pickup 11, an ECC 12, a drive control unit 13, a management file storage unit 14, a video / audio multiplexing unit 15, and an audio encoder. 16, a video encoder 17, a detection unit a 18, and a controller 19.
The video encoded data encoded by the video encoder 17 and the audio encoded data encoded by the audio encoder 16 are multiplexed by the video audio multiplexer 15. The multiplexed data passes through the detection unit a18, is subjected to error correction processing by the ECC 12, and is recorded on the disk 10.
The controller 19 instructs the data writing position to the drive control unit. The video audio multiplexing unit 15 and the detection unit a18 send information necessary for creating the management file to the controller 19, and the controller 19 forms a management file in the management file storage unit 14. The format of the management file is shown in FIG.
The management file is composed of whole disk information 40 followed by a plurality of packet information 41. The packet information 41 includes the size of the packet information, the packet start position, the GOP start position, the I frame end position, and the P frame end position. The packet start position is the address of the sector where the head data of the packet is recorded or the relative number of sectors as viewed from the sector where the head data of the multiplexed data is recorded.
Further, the GOP start position is set to the address of the sector where the start address of the GOP data is recorded. The end position of the I frame is the address of the sector where the last data of the I frame is recorded, or the address of the semter where the data immediately before the next frame of the I frame is recorded. The end position of the P frame is the address of the sector where the last data of the P frame is recorded. The GOP start position, I frame end position, and P frame end position may be the relative number of sectors as viewed from the sector where the head of the multiplexed data is recorded or the sector where the head data of the packet is recorded. .
These positions are managed by, for example, an ID area indicating the type of position and a sector address or an area indicating the relative number of sectors as shown in FIG.
As shown in FIG. 4, the data multiplexed by the video / audio multiplexer 15 of FIG. 1 is composed of a plurality of packets. Packet management information is arranged at the head of the packet, and data for several GOPs is arranged next. In the multiplexing of video and audio, for example, the audio encoded data 42 is arranged first for each GOP, and then the video encoded data is arranged.
The packet management information is composed of information for separating audio data and video data in the packet and information for synchronizing reproduction of video and audio. For example, as shown in FIG. 10, a system time reference value SCR (System Clock Reference), a time VPTS (Video Presentation TimeStamp) at which the first video frame is displayed, and a first audio frame thereafter Is displayed, the time APTS (Audio Presentation Time Stamp), the size of the audio encoded data following the packet management information, and the AV separation information indicating the size of the video encoded data.
The relationship between packets and disk clusters is shown in FIG. A packet is composed of integer clusters. However, since the video code amount is not constant, an empty area is created at the end of the packet to adjust the length of the entire packet. In the entire disk information, free sector information of the disk, remaining recording time information, and a plurality of moving image information as shown in FIG. 6 are arranged. In the moving image information, a title, creation date / time, recording time, and packet connection information are arranged in units of one moving image recorded by the user. The packet connection information indicates the reproduction order of packets composed of data for a plurality of GOPs, and the user can edit and change the reproduction order of the packets or delete the packets.
Next, the operation of the embodiment of the moving image recording apparatus will be described with reference to FIG.
The video audio multiplexing unit 15 multiplexes the video encoded data and the audio encoded data with a plurality of GOPs as a delimiter. For example, this is arranged in the order of audio encoded data and video encoded data for each GOP. Packet management information is added to the head of the delimited data, an empty area is added to the end of the data to create an integer cluster size packet, and the multiplexed data is transmitted to the detector a18. In addition, the video / audio multiplexing unit 15 notifies the controller 19 of the creation of the packet.
The detection unit a18 detects the GOP start position, the I frame end position, and the P frame end position from the multiplexed data sent from the video audio multiplexing unit 15, and notifies the controller 19 of it. This follows, for example, the flowchart of FIG.
In the figure, in step S60, initial values of PTC and PSC are set. PTC and PSC are variables that become 1 when an I or P picture type code and a picture start code of a frame subsequent to an I frame or P frame are detected. Here, the picture start code represents the start code of the picture (frame), and the picture type represents the encoding method (I, P, B), and these are standardized by MPEG.
In steps S61 and S62, when a sequence header code is detected, this is notified to the controller 19 in FIG. 1 as the start of a GOP. The sequence header code is a start code of frame information having the same attributes such as image size and image rate, and is also standardized by MPEG.
In steps S63, S64, and S65, when the picture start code is detected and PTC = 1, the data immediately before the picture start code is notified to the controller 19 in FIG. 1 as the end of the I frame or P frame, and PSC = 1. . In steps S66, S67, and S68, the picture type code is detected, and when the picture type code is I or P, the detected picture type is stored in PIC_TYPE with PTC = 1. The above process is repeated until the end of the video sequence is detected in step S69.
Through the above processing, the GOP start position, I frame end position, and P frame end position are detected.
The controller 19 stores the signals sent from the video / audio multiplexing unit 15 and the detection unit a18, the detected GOP start position, the end position of the I frame, and the end position of the P frame from the position for recording on the disc. Create a management file in The created management file is recorded on the disk 10 after the end of moving image recording or when the disk is taken out. When handling a disc on which a moving image has already been recorded, the management file is read from the disc 10 immediately before the start of moving image recording or when the disc is inserted into the moving image recording device, and transferred to the management file storage unit 14. The In the embodiments so far, the end position of all I frames and the end position of all P frames are arranged in the packet information of the management file.
However, the embodiment is not limited to this, and the data amount of the management file may be saved by reducing the frame end position to be managed. For example, a format that does not manage the end position of the P frame as shown in FIG. 5 is conceivable.
In the flowchart of FIG. 8, the end of the I frame or P frame is the data immediately before the I frame or P frame, but the end of the I frame or P frame may be the end of the data of the I frame or P frame. .
Also, the method of multiplexing the audio encoded data and the video encoded data constituting the packet is not limited to the method of arranging the audio encoded data and the video encoded data in order for each GOP shown in FIG. A method of arranging video encoded data and audio encoded data for each GOP shown in FIG. 11 (a) or a method of arranging audio encoded data for each video frame of FIG.
The multiplexed data is not limited to video and audio. For example, a sub-picture area 100 including subtitle information shown in FIG. 12 and an after-recording area 110 shown in FIG. 13 may be added.
In the present embodiment, a sequence header is arranged at the head of the GOP. This is because if the sequence header is arranged only at the beginning of the video encoded data, the sequence header cannot be read when the multiplexed data is reproduced from the middle by editing or the like, and normal reproduction is not performed. Therefore, in the present embodiment, the sequence header is arranged at the head of each GOP data of the multiplexed data and can be reproduced from the GOP in the middle.
Next, processing during high-speed playback in the moving image playback method will be described.
FIG. 15 shows a disk reading operation in the high speed reproduction of the present invention. In high-speed playback, a part of the video sequence that constitutes the GOP 150 is read from the disk, the I frame 152, the P frame 153, and the P frame 154 are played in order. This is performed by reading a part of the encoded data and repeating the reproduction of the I frame, P frame, and P frame in order.
At this time, the encoded data to be read becomes IBBPBBP, and reading starts from the head of the I frame, and reading ends at the end of the data constituting the second P frame. (FIG. 15 shows an example in which reading is completed at the second P frame, but the number of P frames displayed is not limited to two. It is also possible to display only I frames. ) The read B frame is not reproduced because it is difficult to decode compared to the I frame and the P frame.
The video frames to be reproduced are only I frames and P frames, but since the code amount of B frames is smaller than that of I frames and P frames, the frame is more than the case of reading only the encoded data of only I frames and P frames. It is more efficient to continuously read out and discard the unnecessary B frame encoded data without reproducing it.
An embodiment of the moving image reproduction method is shown in FIG.
FIG. 1 shows an example of a block diagram constituting a moving image playback apparatus, and includes a disc 10, a pickup 11, an ECC 12, a management file storage unit 14, a video audio separation unit 20, an audio decoder 21, a video decoder 22, It comprises a detection unit b23, a controller 24, and a drive control unit 25.
The multiplexed data read from the disk 10 by the pickup 11 passes through the ECC 12, undergoes error correction processing, and is input to the video / audio separation unit 20. The video / audio separation unit 20 separates the multiplexed data into video encoded data and audio encoded data based on the header information of the multiplexed data. The separated video encoded data passes through the detection unit b23 and is reproduced by the video decoder 22, and the separated audio encoded data is reproduced by the audio decoder 21.
When the high speed reproduction is instructed, the controller 24 receives the disk position information of the data currently being read from the drive control unit 25. Then, the number of video frames to be reproduced for each GOP is determined from the instructed reproduction speed. For example, all I frames and P frames are reproduced in the case of the low-speed search, and only I frames are reproduced in the case of the high-speed search.
Next, the controller 24 sets the read start position and the read end position by referring to the management file stored in the management file storage unit 14 from the number of playback frames for each GOP. Next, the controller 24 instructs the drive control unit 25 to read the data at the designated disk position, and reads multiplexed data necessary for high-speed playback from the disk 10. When the multiplexed data is read, the pickup 11 is jumped to the start position of the next GOP to be reproduced. The number of jumping GOPs is also determined by the speed of high-speed playback. This is, for example, one GOP ahead in the case of low-speed search, and several tens of GOPs in the case of high-speed search. By repeating the above processing, high-speed playback is performed.
The operation of the controller 24 during high speed reproduction will be described.
The controller 24 performs processing according to the flowchart of FIG. In step S70, the jump size, the number of display frames for each GOP, and the initial values in the forward and reverse directions are set according to the speed and direction of high-speed playback.
Further, the address of the GOP start position of the packet information of the management file corresponding to the GOP currently being reproduced or being noticed in the reproduction stopped state is set to adr, and attention is paid in the currently reproduced or reproduction stopped state. Packet_adr is set as the address of the packet start position of the packet information of the management file corresponding to the received packet, and the size of the packet information file is set as length.
The unit of size and address is the sum of the number of bits indicating ID and the number of bits indicating position in FIG. Further, the number of bits of the packet information size in the packet information is also assumed to be equal to the above unit.
Referring to the example of FIG. 4, when the value of adr indicates the GOP start position 43, adr + 1 indicates the I frame end position 44 and adr + 2 indicates the P frame end position 45.
In steps S72, S73, and S74, it is confirmed whether the set “display frame number P for each GOP” is actually displayable.
In step S75, multiplexed data required for high-speed playback is read from the disc according to the number of displayable frames, and playback is performed. Reading of data from the disk is performed by transferring the GOP head position stored at the address adr of the management file and the frame end position stored at the address adr + i to the drive control unit 25.
If playback in the reverse direction is designated in step S75, the I frame and the plurality of P frames read from the disc and decoded are played in the reverse order. Further, by displaying the images of the frames to be reproduced several frames in succession, the display of the images is not terminated and the display is not interrupted until step S75 is executed again.
In steps S79, S80, S82, and S83, it is confirmed whether or not the display position is out of the moving image range by fast-forwarding and rewinding. If the display position exceeds the range, the high-speed playback operation is terminated.
In steps S79 and S80, it is determined whether or not the range is out of the forward direction. Next, in steps S82 and S83, it is determined whether or not the range is out of the reverse direction.
In step S88, it is determined whether there is a jump destination GOP. If there is, the adr is updated to the jump destination GOP in step S89, and the flow returns to step S72.
As shown in FIG. 2, the multiplexed data read from the disc is separated into video encoded data and audio encoded data by the video / audio separation unit 20. At this time, the data read from the disc includes encoded data of the B frame that is not reproduced between the I frame and the P frame that are reproduced. The detection unit b23 detects only the picture start code and the picture type, and sends only the encoded data of the I frame and the P frame to the video decoder 22. As described above, high-speed playback using the management file is realized.
Next, another embodiment will be described.
The recording medium used in the present invention is not limited to a disk, and may be recorded in, for example, a semiconductor memory. An example of a block diagram of a moving picture recording apparatus using a semiconductor memory is shown in FIG. 16, and an example of a block diagram of a moving picture reproducing apparatus using a semiconductor memory is shown in FIG. In FIG. 16, the controller 19 commands the read and write addresses of the semiconductor memory 160, and in FIG. 17, the controller 24 instructs the read addresses of the semiconductor memory 160. Other configurations and operations are in accordance with the previous embodiment.

It is the figure which showed an example of the block diagram of embodiment of the moving image recording method of this invention. It is the figure which showed an example of the block diagram of embodiment of the moving image reproduction method of this invention. It is a figure explaining the relationship between the packet and cluster in this Embodiment. It is the figure which showed the structure of the management file. It is the figure which showed the structure of the management file. It is the figure which showed the structure of the whole disk information. It is the figure which showed the format of packet information. It is the flowchart figure which showed the operation | movement of the detection part a. It is the flowchart figure which showed the operation of the controller in high speed reproduction. It is the figure which showed the structure of packet management information. It is the figure which showed the example of multiplexing of video and audio. It is the figure which showed the example which added the sub picture area | region. It is the figure which showed the example which added the after-recording area | region. It is the figure which showed the process of compression by MPEG. It is the figure which showed the operation | movement at the time of the high-speed reproduction | regeneration of this invention. It is the figure which showed an example of the block diagram of another moving image recording device of this invention. It is the figure which showed an example of the block diagram of another moving image reproducing device of this invention. It is a figure explaining the entry point of the conventional form. It is the figure which showed the entry packet of the conventional form. It is the figure which showed the data coding apparatus of the conventional form. It is the figure which showed the data decoding apparatus of the conventional form.

Explanation of symbols

10 Disc 11 Pickup 12 ECC
13, 25 Drive control unit 14 Management file storage unit 15 Video audio multiplexing unit 16 Audio encoder 17 Video encoder 18 Detection unit a
19, 24 Controller 20 Video audio separation unit 21 Audio decoder 22 Video decoder 23 Detection unit b
40 Whole disk information 41 Packet information 42 Audio encoded data 43 GOP start position 44 I end position 45 P end position 100 Sub-picture area 110 After-recording area 140, 150, 151 GOP
141, 153, 154 P frame 142 B frame 152 I frame 160 Semiconductor memory 200 Entry packet 211 Entry point storage device 212 Video entry point detection circuit 213 DSM
214 Code buffer 215, 221 Switching circuit 216 Header addition circuit 217 Multiplexing system clock generator 218 Entry packet generator 219, 222 Controller 220 Header separation circuit

Claims (2)

An apparatus for playing back a disk-shaped recording medium on which multiplexed data including at least video encoded data and audio encoded data and a management file, each of which is composed of a plurality of fixed-length blocks, is recorded.
The encoded video data is obtained by encoding a group of video frames. When a plurality of video frames are set as one unit, the start position of the encoded video data corresponding to the one unit or the plurality of units is set to the multiplexed data. The first relative number of blocks from the block in which the head data is recorded to the first block in which the one unit of head data is recorded,
In addition, the end position of the intra-coded video frame is defined as the second relative block number from the first block to the second block in which the last data of the intra-coded video frame is recorded. age,
A moving image reproducing apparatus, wherein the first relative block number and the second relative block number are recorded on a recording medium as a management file separately from the multiplexed data. An apparatus for playing back a disk-shaped recording medium on which multiplexed data including at least video encoded data and audio encoded data and a management file, each of which is composed of a plurality of fixed-length blocks, is recorded.
The video encoded data is obtained by encoding a video frame group, and when a plurality of video frames are set as one unit and a header is added to each unit or a plurality of units,
The start position of one unit is the third relative block number from the block where the head data of the multiplexed data is recorded to the block where the head data of the header is recorded,
In addition, the end position of the intra-frame encoded video frame is defined as the fourth relative block number from the third block to the fourth block in which the last data of the intra-frame encoded video frame is recorded. age,
The moving picture reproducing apparatus, wherein the third relative block number and the fourth relative block number are recorded on a recording medium as a management file separately from the multiplexed data.

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