JPH11261962A - Moving image recording method, reproduction method, edit method and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize high speed reproduction and edit of video data compressed in variable length efficiently. SOLUTION: In the moving image recording method, in the case that compressed video audio data are multiplexed and recorded/stored in a disk or a semiconductor memory, let a set of a plurality of frames be a group of picture GOP, then relative values of multiplexed data with respect to a start position 33 of a GOP, an end position 34 of one or a plurality of in-frame coded frames for each GOP, and an end position 35 of one or a plurality of forward prediction coded frames from a head of the data are recorded on the medium as the frame position information. The high-speed reproduction of data is conducted by referring to the frame position information. Furthermore, the recorded multiplexed data are edited without the need for revision by using a pointer to a frame position managed by the frame position information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rewritable disk medium for recording multiplexed data obtained by multiplexing coded video data and coded audio data, and a semiconductor for storing the multiplexed data. A moving image recording / reproducing / editing method and apparatus using a memory, capable of performing special reproduction such as high-speed reproduction and high-speed reverse reproduction, designating a reproduction order and partially reproducing without rewriting video encoded data and audio encoded data. The present invention relates to a moving image recording method, a reproducing method, an editing method, and an apparatus that can execute the method.

[0002]

2. Description of the Related Art Since video data has a very high data rate, it is difficult to record the 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.

For this reason, a method has been used in which video data and audio data are efficiently encoded to reduce the data rate to a recordable rate on a disk medium without any visual or auditory deterioration.

As an example of the high efficiency coding method, MPEG
(Moving Picture Experts Group: MPEG).

FIG. 14 shows an example in which a moving image is compressed by the MPEG system.

In FIG. 1, a plurality of parallelograms represent frames forming a moving image.

FIGS. 1B and 1C show the process of compressing the moving image of FIG. 1A by MPEG.

In MPEG, 12 video frames and 15 video frames are used.
Go together several frames such as video frames
Called P (Group Of Pictures).

In FIG. 14B, video frames in the GOP 130 are classified into I frames, P frames, and B frames.

An I frame indicates that the frame has been intra-coded, and a P frame indicates that the frame has been predictively coded forward from the I frame or forward.

A B frame is located between an I frame and a P frame or between P frames, and is predictively coded from both directions of the I frame and the P frame.

As an example, the directions of prediction in the P frame 131 and the B frame 132 are indicated by arrows.

In MPEG, the video order is created by changing the frame order in FIG. 14 (b) as shown in FIG. 14 (c).

Since P frames and B frames are predictively coded from I frames or video frames predicted and coded from I frames, to decode all video frames in a GOP, it is necessary to first decode from I frames. is there.

That is, when playing back a recorded moving image in the middle due to random access or the like, it is necessary to decode from an I frame.

Further, since the P frame is predicted from the forward direction, it can be decoded relatively easily than the B frame predicted from both directions.

The amount of code of video data compressed by MPEG is not proportional to time in a short time.

Therefore, the video encoded data amount of each frame is not constant, and the recording position of the encoded data of each frame is not uniquely determined.

In MPEG, compressed video encoded data and audio encoded data are divided into units called packets, and these are multiplexed to create multiplexed data.

In the following description, multiplexed data from the start of recording or shooting to the end thereof will be referred to as a video sequence.

One method of reproducing a video sequence compressed by MPEG at a high speed is a method of extracting some frames from video frames displayed in normal reproduction and displaying only those frames.

The disc and the semiconductor memory can reproduce data recorded in the discontinuous area as continuous data by performing high-speed random access which is a feature of the disc and the semiconductor memory.

However, in a video sequence 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 sequentially read only the frame data to be displayed at high speed reproduction.

As a prior art for realizing high-speed reproduction and editing work using highly efficient encoded data, there is a method described in Japanese Patent Application Laid-Open No. 8-45249, and the start of frame data recorded on a disk is started. It describes that the position and the end position are managed using the value of the physical sector.

FIG. 20 shows a conventional example.

FIG. 2B shows the contents of the disk and the positions where the sector data is delimited, and two video sequences (video sequence 1 and video sequence 2) are shown as an example.

The head physical sector, end physical sector and I frame of the video sequence, and the head physical sector and end physical sector of the P frame are managed in the table shown in FIG.

The key frame indicates an I frame and a P frame. The key frame table indicates a “key start sector 207” indicating the physical sector in which the head of the I frame and the P frame is recorded, and the physical sector in which the rear end is recorded. The “key end sector 208”, the “I, P flag 209” for distinguishing the I frame and the P frame, and a pointer to the next frame to be displayed (the “next frame address 206”) are managed.

The area table indicates “start sector number 2” indicating the first physical sector of the area used by the video sequence.
03 "," end sector number 204 "indicating the last physical sector of the area used by the video sequence, and a pointer to a key frame table row for managing the first frame recorded in the area (" start frame address 20 ").
5)), and when one video sequence cannot be stored in a continuous sector, each of the continuous areas has a “start sector number”, an “end sector number”, and a “start frame address”. The connection of the areas is managed by “next area address 202”.

The sequence table has a pointer to a video sequence to be reproduced next ("next sequence address 200") and a pointer to a row of an area table corresponding to the video sequence ("area table address 2").
01 "), and the reproduction order of a plurality of video sequences is managed.

Each row of each table is provided with a flag indicating use or non-use.

As an example, a description will be given of management information when recording the video sequences 1 and 2 shown in FIG.

In the I frame shown in FIG.
And the physical sector value of the sector 217 are “key start sector” of an unused row of the key frame table,
It is stored in the “key end sector”, and the I and P flags are set to I.

Similarly, in the P frame, the sector 218 is used.
And the physical sector value of the sector 219 becomes “key start sector” and “key end sector” of an unused row different from the above in the key frame table, and the I and P flags are set to P.

The connection of key frames is managed by "next frame address".

For the video sequence 1, the physical sector value of the sector 212 indicating the start and end of the area 1, the sector 2
Thirteen physical sector values are “start sector number” and “end sector number” of an unused row in the area table, and a pointer to the first key frame table row of area 1 is managed by “start frame address”. .

The physical sector values of the start sector and end sector of the area 2 of the video sequence 1 are "start sector number" and "end sector number" of an unused row different from the above in the area table, and the connection between the two areas is as follows. , And “next area address”.

Video sequence 1, Video sequence 2
Are managed by the “next sequence address” of the sequence table, and pointers to the rows of the area table corresponding to the respective video sequences are managed by the “area table address”.

In each table, use of the used row,
Unused flags are changed to used.

The above-mentioned table is recorded in a specific TOC area of a disc (not shown), is taken into a memory in the apparatus when the disc is inserted, and is stored in the memory when the disc is taken out. The recorded table is recorded in the TOC area of the disc.

The high-speed reproduction in the conventional example will be described.

High-speed reproduction is performed by reading some frame data from a video sequence recorded on a disk and sequentially displaying the decoded frame data on a screen.

More specifically, the "key start sector" of the key frame table stored in the memory of the playback device,
With reference to the “key end sector”, the position of the disk on which the data constituting the I frame and the P frame is recorded is obtained, the data of the I frame and the P frame is taken from the disk, the data is decoded, and the image is displayed on the screen. To be displayed.

Then, referring to the "next frame address" of the key frame table, the address of the memory in which the value of the start physical sector and the value of the end physical sector of the I frame and P frame to be displayed next are stored. High-speed reproduction is realized by acquiring and repeating the above operation.

In the high-speed reproduction, the coded data of the B frame, which is more difficult to decode the image than the I frame and the P frame, are skipped.

The editing operation of the video sequence in the above conventional example will be described.

To change the reproduction order of the video sequence, the value of the “next sequence address” is set in each row of the sequence table managing the video sequence by changing the value of the “next sequence address” in the sequence table managing the video sequence to be reproduced next. This is performed by changing the address value of the memory corresponding to the row.

Thus, a plurality of video sequences can be reproduced in an arbitrary order.

To delete a video sequence, the "used / unused flag" in each row of the sequence table, area table, and key frame table managing the target video sequence is made unused, and the video sequence to be deleted is deleted. This is performed by changing the “next sequence address” of the previous video sequence to the value of the “next sequence address” of the video sequence to be deleted.

To shorten the length of a scene by deleting a part of the video sequence, change one or both of the "start sector number" and the "end sector number" in the area table to change the data of the video sequence. If the amount is reduced and the “start sector number” is changed, the “start frame address” is changed to the address of the key frame table that manages the first key frame of the changed area.

Then, the set “start sector number”,
The use of rows in the key frame table that manages frames composed of data recorded outside the range of the “ending sector number” and the deletion of some of the video sequence by changing the unused flag to unused I can do it.

[0052]

The operation of high-speed reproduction in the forward direction will be described with reference to FIG.

In the high-speed reproduction, a part of the video sequence constituting the GOP 140 is read from a disk or a semiconductor memory, and the I frame 143, the P frame 144, and the P frame 145 are reproduced in order. Alternatively, it is performed by changing the read address of the semiconductor memory, reading a part of the encoded data of the GOP 141 several ahead, and reproducing the I, P, and P frames in order.

At this time, the encoded data to be read is:
It becomes IBBPBBP and starts reading from the beginning of the I frame, and ends reading at the end of the data constituting the second P frame. (Although FIG. 15 shows an example in which reading is completed with the second P frame, the number of P frames to be displayed is not limited to 2. Alternatively, only the I frame may be displayed. The read B frame is not reproduced because it is difficult to decode the B frame compared to the I frame and the P frame.

The video frame to be reproduced is an I frame, P
Although it is only a frame, the code amount of a B frame is smaller than that of an I frame and a P frame. Therefore, it is unnecessary to read all frames continuously rather than reading only encoded data of only an I frame and a P frame. It is more convenient to discard the encoded data of the B frame without reproducing it.

In order to realize the above-described high-speed reproduction, GO
The start position of P, the end position of I frame, and the end position of P frame may be managed. In the conventional example, the table is used to manage the values of the start physical sector and end physical sector of all I frames and P frames. A large-capacity memory for storing is required.

For example, 30 frames / second, I frame +
When the ratio of P frame to B frame is 1: 2, 1
In a time video sequence, 36000 frames need to be managed. If address information is 14 bits and sector information is 32 bits, a memory of about 4 M bits is required.

In the conventional example, the pointer (“next frame address”) indicated in the key frame table is
Since only the frame to be reproduced next is shown, there is a problem that the frame in the reverse direction cannot be referred to and high-speed reproduction in the reverse direction cannot be performed.

Further, since the table has the value of the physical sector, when copying the video sequence recorded on the disk to another disk, if the video sequence is not copied to the position of the same physical sector, it is shown in the table on the copy destination disk. Since it is not possible to use the value of the physical sector as it is, it is difficult to perform high-speed reproduction and editing on the copy destination disk.

Further, by changing the pointer value in the table, it is impossible to return to the state before editing after deleting some scenes and changing the reproduction order.

In view of the above-mentioned conventional problems, the present invention provides a method and apparatus for managing a frame position for high-speed reproduction with a smaller capacity than the conventional example, and a method for recording a recorded video sequence together with frame position information to another disk or semiconductor memory. It provides a method that enables high-speed playback on the transfer destination medium when transferred to a destination, and an editing method that plays back any scene in any order without changing the video sequence recorded on the disc or semiconductor memory. is there.

[0062]

According to a first aspect of the present invention, there is provided multiplexed data obtained by multiplexing a plurality of data including at least video encoded data obtained by encoding video data and audio encoded data obtained by encoding audio data. In a recording method for recording on a recording medium, when a plurality of frames are defined as one unit, the start position of the one unit is determined for each unit, and one or a plurality of first methods are used for encoding in the one unit. And the frame position information indicating the end position of the video frame encoded by one or a plurality of second techniques, and the frame position information is determined from the beginning of the multiplexed data. 3. The moving image recording method according to claim 2, wherein said frame position information is recorded separately from said multiplexed data. , The frame position information includes a start position of one unit when a plurality of frames indicated by a relative position from the head of the multiplexed data is defined as one unit, and an end position of a video frame encoded by the first method. 2. The moving image recording method according to claim 1, wherein the moving image recording method comprises: an end position of a video frame encoded by a second method; and an identification flag for discriminating the respective positions. Further, according to the invention of claim 3, when an area for storing an offset value is added to the frame position information of the multiplexed data and the partial data including the head of the multiplexed data is deleted, the data is deleted. A moving image recording method according to claim 1 or claim 2, wherein the number of blocks is set to an offset value. Chemical day The audio encoded data is divided, a packet to which a header is added, and one or a plurality of packets are combined, and the packet is composed of a pack to which a header is added. When divided, a start position of the unit including a plurality of frames as a unit is set as a block including a head of a pack including the head of the unit, and a start position of a video frame encoded by the first method is determined. The end position includes the block including the end of the packet including the end of the video frame encoded by the first technique, or the beginning of the video frame following the video frame encoded by the first technique. Any one of the blocks including the end of the packet, and the end position of the video frame encoded by the second method is used as the video frame encoded by the second method. The block including the end of the packet including the end of the frame, or the block including the end of the packet including the beginning of the video frame next to the video frame encoded by the second method. The moving image recording method according to any one of claims 1 to 3, wherein the number of blocks is relative to the number of blocks constituting the head of the multiplexed data. The invention according to claim 5 is a method for reproducing multiplexed data from a recording medium by multiplexing a plurality of data including at least video encoded data obtained by encoding video data and audio encoded data obtained by encoding audio data. When reproducing the multiplexed data recorded on the recording medium by the recording method according to claim 1, the reproduction is performed by referring to the frame position information according to claim 1. A moving image reproducing method which is characterized in that data constituting a video frame to be used is read from the recording medium, and the invention according to claim 6 is characterized in that the frame position information is obtained from the beginning of the multiplexed data. When a plurality of frames indicated by relative positions are defined as one unit, the start position of the one unit, the end position of the video frame encoded by the first method, and the video frame encoded by the second method 6. The moving picture reproducing method according to claim 5, wherein the moving image reproducing method is configured to include an end position of the moving image and an identification flag for discriminating the respective positions. When an area for storing an offset value is added to the frame position information, and the partial data including the beginning of the multiplexed data is deleted, the number of deleted blocks is used as an offset value. A moving image reproducing method according to claim 5 or claim 6, wherein the multiplexed data is obtained by dividing video encoded data and audio encoded data. Then, a packet to which a header is added and one or a plurality of packets are put together, the packet is composed of a pack to which a header is added, and the multiplexed data composed of the pack is
When divided into blocks of a fixed length, the start position of the unit including a plurality of frames as a unit is defined as a block including the head of a pack including the head of the unit, and encoded by a first method. The end position of the video frame
Or the block including the end of the packet including the end of the video frame encoded by the first method, or the block including the end of the packet including the beginning of the video frame next to the video frame encoded by the first method. Either,
In addition, the end position of the video frame encoded by the second method is determined by a block including the end of the packet including the end of the video frame encoded by the second method, or encoded by the second method. A block including the end of the packet including the beginning of the video frame following the multiplexed video frame, and the position of the block is set to the relative number of blocks with respect to the block constituting the beginning of the multiplexed data. The moving image reproducing method according to any one of claims 5 to 7, wherein the video data and the audio data are encoded at least by encoding video data. In a recording apparatus for recording multiplexed data obtained by multiplexing a plurality of data including coded audio encoded data on a recording medium, a plurality of frames are regarded as one unit. The start position of the one unit for each unit, the end position of one or more video frames encoded by the first method in the one unit, and one or more second methods Frame position information obtaining means for obtaining frame position information indicating the end position of the video frame encoded in the above, and the frame position information is a relative data length from the beginning of the multiplexed data, and the frame position information is And a recording means for recording separately from the multiplexed data, wherein the frame position information is indicated by a relative position from the head of the multiplexed data. The start position of one unit when a plurality of frames to be processed are regarded as one unit, the end position of a video frame encoded by the first method, the end position of a video frame encoded by the second method, ,Previous 10. The moving picture recording apparatus according to claim 9, wherein the moving picture recording apparatus comprises an identification flag for discriminating each position. The invention according to claim 11, wherein an offset is added to the frame position information of the multiplexed data. An area for storing a value is added, and the number of blocks deleted when partial data including the beginning of the multiplexed data is deleted is used as an offset value. In the moving picture recording apparatus according to the tenth aspect, the invention according to the twelfth aspect is characterized in that the multiplexed data is a packet obtained by dividing video encoded data and audio encoded data and adding a header, and one or more packets. It is composed of a pack in which a plurality of packets are combined and a header is added. When the multiplexed data composed of the pack is divided into blocks of a fixed length, a plurality of frames are converted into one unit. The start position of the one unit as the position is a block including the head of the pack including the head of the one unit, and the end position of the video frame encoded by the first method is determined by the first method. Either a block including the end of the packet including the end of the encoded video frame, or a block including the end of the packet including the beginning of the video frame next to the video frame encoded by the first method. In addition, the end position of the video frame encoded by the second technique is determined by a block including the end of the packet including the end of the video frame encoded by the second technique, or by the second technique. Any one of the blocks including the end of the packet including the beginning of the video frame following the encoded video frame, and the position of the block is determined from the block constituting the beginning of the multiplexed data. And a moving picture recording apparatus according to any one of claims 9 to 11, characterized in that as the relative number of blocks, also claim 13
In the invention, the code amount of the multiplexed data,
Calculating means for detecting the one-unit start code, video frame start code, and video frame encoding method as units, and calculating frame position information, and storing the frame position information calculated by the calculating means. Memory and
13. The moving image recording apparatus according to claim 9, further comprising a conversion unit configured to convert frame position information into a physical address of a recording medium.
A fourth aspect of the present invention is an apparatus for reproducing from a recording medium a multiplexed data obtained by multiplexing a plurality of data including at least video encoded data obtained by encoding video data and audio encoded data obtained by encoding audio data. 9
When reproducing the multiplexed data recorded on the recording medium by the recording apparatus according to the above, reading the data constituting the video frame used for the reproduction from the recording medium with reference to the frame position information according to the ninth aspect. A moving image reproducing apparatus comprising: a plurality of frames each represented by a relative position from the head of the multiplexed data as one unit. Consisting of a start position of one unit, an end position of a video frame encoded by the first method, an end position of a video frame encoded by the second method, and an identification flag for discriminating the respective positions. The moving image reproducing apparatus according to claim 14, wherein the offset value is stored in the frame position information of the multiplexed data. 16. The method according to claim 14, wherein an area is added, and the number of blocks deleted when partial data including the head of the multiplexed data is deleted is used as an offset value. The multiplexed data may be a packet obtained by dividing video encoded data and audio encoded data and adding a header, and one or more packets. In summary, when the multiplexed data composed of a pack to which a header is added and the multiplexed data composed of the pack is divided into blocks of a fixed length, the start position of the one unit with a plurality of frames as one unit is set to the one position. A block including a head of a pack including a head of a unit is defined as a block including a head of the video frame encoded by the first method. Block contains the end of the packet including, or as any of the blocks containing the end of the packet including the head of the next video frame of the video frame coded in the first approach, also,
The end position of the video frame encoded by the second technique is determined by using the block including the end of the packet including the end of the video frame encoded by the second technique, or
Any of the blocks including the end of the packet including the beginning of the video frame next to the video frame encoded by the method of the above method, and the position of the block is determined by the relative number of blocks with respect to the block constituting the beginning of the multiplexed data. 17. The moving picture reproducing apparatus according to claim 14, wherein said moving picture reproducing apparatus is adapted to perform
The present invention provides a detecting means for detecting a start code of one unit, a start code of a video frame, and an encoding method of a video frame in which a plurality of frames are defined as one unit, a memory for storing frame position information, The moving image reproducing apparatus according to any one of claims 14 to 17, further comprising: a conversion unit configured to convert information into a physical address of a recording medium. The multiplexed data recorded by the moving image recording method according to any one of claims 1 to 4, and / or the multiplexed data reproduced by the moving image reproducing method according to any one of claims 5 to 8. In the editing method for editing the encrypted data,
A user program that specifies a reproduction start position and a reproduction end position of the multiplexed data using the frame position information, and specifies a reproduction mode of the multiplexed data in which the reproduction start position and the reproduction end position are specified; A moving image editing method according to the gist of the invention is that the editing can be performed without changing the data.
A multiplexed data recorded by the moving picture recording apparatus according to any one of claims 13 to 13, and / or 14.
19. An editing apparatus for editing multiplexed data reproduced by the moving image reproducing apparatus according to claim 18, wherein a reproduction start position and a reproduction end position of the multiplexed data are designated using frame position information, A moving image editing apparatus comprising a user program for designating a reproduction mode of multiplexed data in which the reproduction start position and the reproduction end position are specified, and capable of editing without changing the multiplexed data.

[0063]

Embodiments of the present invention will be described in detail with reference to the drawings.

First, the processing at the time of recording the encoded data will be described.

FIG. 1 shows a part of a block diagram of a moving image recording apparatus using a disk according to an embodiment of the present invention.

The figure shows an audio encoder 13, a video encoder 14, a video / audio multiplexing unit 12, a detection unit a11, a memory 16, a TOC management unit 19, and a conversion unit a
20, a control unit 15, an ECC 10, a pickup 18, and a disk 17.

The structure of the disk used in this embodiment will be described.

FIG. 16 is a diagram showing, in the horizontal direction, the division of sectors on the disk used in the present invention and the data in the sectors. The disk is divided into a TOC area 151 and a file data area 152.

As an example, the VSS is stored in the file data area.
This shows a case where data of a file named # 1, VSS # 2 is recorded.

Here, VSS means (Video Sequence Se
t), each of a plurality of video sequences is referred to as VS
It will be used to distinguish by S number.

In the physical sector, a sector to which data can be written is a logical block, and only the logical block is shown in the figure.

The correspondence between a logical block and a physical sector is managed by a file system not described in the present embodiment, and the present embodiment targets a logical block.

The TOC area 151 is composed of data for managing the disk, and includes a file name, a data capacity of the file, a starting logical block number of the file, and a file when the file exists in a plurality of continuous sectors. And link information indicating the connection of logical blocks, a table indicating the free information of the logical blocks of the entire disk, and the like.

FIG. 17 is a diagram showing a management table of free information of a logical block. Referring to this table, a free area of a disk is detected to record a video sequence and other files on the disk. Can be.

When a continuous area cannot be secured when recording a video sequence on a disk, in order to prevent the seek time of the pickup of the recording apparatus from affecting the writing on the disk, each of the plurality of areas has a certain number or more. It is recorded so as to be a continuous logical block.

In the block diagram of FIG. 1, audio encoded data and video encoded data compressed by the audio encoder 13 and the video encoder 14 are packetized by the video / audio multiplexing unit 12 and information such as a header is added. Multiplexed.

Here, actually, the audio encoder 1
3. There are audio data and video data before compression which are input to the video encoder 14, but these data and generation paths are omitted.

The detecting section a11 counts the video sequence output from the video / audio multiplexing section 12 for each fixed data length, and detects the sequence header code, picture start code and picture type in the transmitted video sequence. Then, the start position of the GOP, the end position of the I frame, and the end position of the P frame are obtained from these information in accordance with the flowchart of FIG.

Here, the sequence header code is a start code of frame information having the same attributes such as an image size and an image rate, the picture start code is a start code of a picture (frame), and the picture type is an encoding method (I,
P, B), which are standardized by MPEG.

The video sequence that has passed through the detection unit a11 is subjected to error correction processing by the ECC 10, and is recorded on a disk.

The frame position information stored in the memory 16 is recorded on the disk as a frame position information file after encoding of video and audio data is completed and a video sequence is recorded on the disk 17.

The contents of the frame position information file will be described later.

When recording the encoded data, the file name,
A management table of a file size, a starting logical block number, link information when not recorded in a continuous area, and free information of a logical block is created in the TOC area of the disk, and the VSS file and the corresponding frame position information file are stored in the file system. Configure above.

Information necessary for the TOC area is stored in the TOC management unit 1.
9 before recording a moving image.
7, the TOC information is read.

The conversion section a20 converts the logical block number managed by the TOC management section 19 into a physical sector value and sends it to the control section 15.

In the above embodiment, when the picture type information of the compressed video frame is obtained from the video encoder 14, the detecting unit a11 may omit the function of detecting the picture type.

The timing at which the frame position information data stored in the memory 16 and the TOC information managed by the TOC management unit 19 are recorded on the disk 17 is not limited to the timing after the encoded data is recorded on the disk. Alternatively, it may be immediately before the power of the recording apparatus is turned off or immediately before the disk is removed.

A description will now be given of the flowchart of FIG. 7 showing the operation of the detection section a11 of FIG.

The detecting section a11 always performs the detecting operation shown in FIG. 7 on the video sequence sent from the video / audio multiplexing section 12 while counting the number of blocks with a fixed data length as a block.

In step S90, initial values of PTC and PSC are set.

PTC and PSC are variables that become 1 when a picture type code of I or P and a picture start code next to an I frame or a P frame are detected, respectively.

In steps S91 and S92, when the pack start code is detected, the block number including the head of the pack start code is set to BLOCK.

In steps S93, S94, and S95, it is determined that the end position of the data of the I frame or the P frame is detected when the packet start code is detected and PSC = 1, and the data immediately before the packet start code is included. The block number and OLD_PIC_TYPE are transferred to the memory 16 in FIG. 1, and PTC and PSC are returned to 0.

Here, OLD_PIC_TYPE is a variable for holding the picture type of one frame before, and is set in a subsequent step.

In steps S96 and S97, when the sequence header is detected, the BLO obtained in step S92 is detected.
CK is transferred to the memory 16 in FIG. 1 as a GOP start position.

In steps S98, S99 and S100,
A picture start code is detected, and when PTC = 1, PSC = 1 is set.

In steps S101, S102 and S103, a picture type code is detected, and if I or P, PTC = 1 and the detected picture type is set to P.
Stored in IC_TYPE.

The above processing is repeated until the end of the video sequence is detected in step S104.

By performing the above processing, the start position of the GOP and the end position of the I and P frames are detected, and the obtained block number is transferred to the memory 16 in FIG.

In the flowchart processing described above, the end positions of the I frame and the P frame are detected as blocks including the end of the packet including the head of the video frame following the I frame and the P frame.

The end positions of the I frame and the P frame are not limited to this, and may be a block including the end of the packet including the end of the I frame and the P frame.

In the flowchart, the end positions of the I and P frames are all detected. However, the entire positions are not managed but are limited to the second P frame from the beginning of the GOP, thereby reducing the size. Management by memory capacity can also be performed.

In this embodiment, a sequence header is always arranged at the head of a GOP.

The reason will be described below.

When a part of the video sequence is played back by editing or when a part including the beginning of the video sequence is deleted, the sequence header is recorded only at the beginning of the video sequence. The header cannot be read, and a normal playback screen cannot be obtained.

Therefore, in this embodiment, the sequence header is placed at the head of each GOP data in the video sequence, thereby enabling reproduction from a GOP in the middle of the video sequence.

In the video / audio multiplexing unit, padding packets, stuffing bytes,
By generating meaningless data for adjusting the length of a video sequence standardized by the PEG system, the beginning of a GOP is arranged at the beginning of data in a block, and Of some GOPs can be deleted by block unit.

FIG. 3 shows the correspondence between the video sequence and the contents of the memory 16 in FIG.

Although the video sequence includes encoded audio data, the audio data has a smaller data amount than the video data, so that the audio data is omitted from the illustration.

Tables 31 and 32 store GOPs for each GOP.
It has information on a start position, an I frame end position, and a P frame end position, and the position means a relative block number counted from the beginning of the video sequence.

One table is created for one video sequence, and the frame position information file (V
SS_ADR).

In order to distinguish a plurality of video sequences and corresponding frame position information files, it is assumed that unique numbers are given to the names of the VSS file and the VSS_ADR file.

For example, the name of the VSS file No. 1 is VSS # 1, and the frame position information file corresponding to VSS # 1 is VSS # 1_ADR.

In the table of FIG. 3, two P
Although it is shown that the end position of the frame is managed,
The number of end positions of the P frame to be managed is not limited, and may be any number.

Since the unit of data read from the disk is a sector, efficient disk access can be realized when the block length is equal to the sector data length of the disk.

In order to reduce the number of bits representing the block number and reduce the amount of data of the frame position information, the length of the block may be set to an integral multiple of the sector data length of the disk.

In the following description, it is assumed that the length of a block is equal to the data length of a sector.

Next, the processing at the time of normal reproduction will be described.

FIG. 2 shows a part of a block diagram of a moving image reproducing apparatus for normal reproduction and high-speed reproduction.

The figure shows an audio decoder 21, a video decoder 22, a detector b23, a video / audio separator 25, a memory 16, a TOC manager 19, a converter a20,
It comprises a conversion unit b24, a control unit 15, an ECC 10, a pickup 18, and a disk 17.

When the reproduction of the VSS file is instructed,
The TOC information and the frame position information file (VSS_ADR) corresponding to the SS file number are read into the TOC management unit 19 and the memory 16, respectively.

The reproducing apparatus has a memory (not shown) for managing the correspondence between the currently reproduced GOP and the frame position information stored in the memory 16. This memory has the same GOP as the currently reproduced GOP. It is assumed that the pointer has a pointer indicating the address value of the frame position information managing the start position.

During normal reproduction, the GOP start position is detected by the detection unit b.
23, and when the sequence header is detected, the value of the memory is stored in the corresponding GO of the frame position information file.
Update to the address value of the P start position.

As described above, by always managing the start position of the current GOP in the video sequence being reproduced, the encoding of the preceding and succeeding GOPs is performed by referring to the frame position information file when switching from normal reproduction to special reproduction. Data can be quickly read from disk.

In the normal reproduction process of the above embodiment, the TOC information and the frame position information file (VS
The timing of reading (S_ADR) from the disc is not limited to immediately before reading the video sequence (VSS), and the TOC information and the data of the frame position information file may be read at once when the disc is inserted. .

Next, the high-speed reproduction process according to the present embodiment will be described with reference to FIG.

In the high-speed reproduction, a part of a video sequence constituting the GOP 140 is read from a disk or a semiconductor memory, and the I frame 143, the P frame 144, and the P frame 145 are reproduced in order, and a pickup (not shown) of the reproducing apparatus is sought. Alternatively, it is performed by changing the read address of the semiconductor memory, reading a part of the encoded data of the GOP 141 several ahead, and reproducing the I, P, and P frames in order.

At this time, the encoded data to be read is:
It becomes IBBPBBP and starts reading from the beginning of the I frame, and ends reading at the end of the data constituting the second P frame. (Although FIG. 15 shows an example in which reading is completed with the second P frame, the number of P frames to be displayed is not limited to 2. Alternatively, only the I frame may be displayed. B) The read B frame is not reproduced because it is more difficult to decode than the I frame and the P frame.

The video frame to be reproduced is an I frame, P
Although it is only a frame, the code amount of a B frame is smaller than that of an I frame and a P frame. Therefore, it is unnecessary to read all frames continuously rather than reading only encoded data of only an I frame and a P frame. It is more convenient to discard the encoded data of the B frame without reproducing it.

In the above, in the case of high-speed reproduction in the reverse direction, the decoded I, P, and P frames are displayed in the reverse order, such as P, P, and I frames. The seek operation in the direction is performed, and the operation of reading encoded data several GOPs in the past is repeated.

A flowchart for realizing the above-described high-speed reproduction is shown in FIG. 8 and described.

In step S110, the high-speed reproduction speed
Depending on the direction, the size of the jump, the number of display frames for each GOP, and the initial values in the forward and reverse directions are set.

Length indicates the size of the position information file, and adr indicates the value of the address that manages the start position of the currently focused GOP in the frame position information table.

The unit of the address of the length and the address is the sum of the data amount representing the frame position 31 in FIG. 3 and the data amount representing the flag 32 indicating the attribute of the position.

In the example of FIG. 3, the value of adr is GO
When the P start position 33 is indicated, adr + 1 is the I frame end position 34 and adr + 2 is the P frame end position 3
5 is shown.

In steps S112 and S114, it is checked whether the set “number of display frames for each GOP” can be actually displayed.

In steps S113, S115, and S116, encoded data necessary for high-speed reproduction is read from the disk according to the number of frames p that can be displayed, and reproduced.

The reading of data from the disk is performed as shown in FIG.
2 that manages the read start block number, read end block number, and TOC from the memory 16 of FIG.
If the starting logical block number of the target VSS file and the data are not recorded in a continuous area from the OC management section 19, the link information between the areas is transferred to the conversion section b24, and the conversion section reads the information from the disc based on the information. The logical block number of the data to be read is obtained and transferred to the conversion unit a20.

The conversion unit a20 converts the sent logical block number into a physical sector value, and the control unit 15 controls the pickup 18 according to the obtained physical sector value, whereby data is read from the disk.

The coded data read from the disk is separated into video data and audio data by the video / audio separation unit 25.

At this time, the data read from the disc includes the encoded data of the B frame which is not reproduced between the I frame and the P frame to be reproduced.

The start code detector 23 detects the picture start code and picture type,
Only the encoded data of the I frame and the P frame are sent to the video decoder 22.

In steps S115 and S116, if reproduction in the reverse direction is designated, the I frame read from the disk and decoded, and a plurality of P frames are reproduced in reverse order.

Further, by displaying the image of the frame to be reproduced several frames in succession, the display of the image is completed and the display is not interrupted by the next execution of steps S113, S115 and S116. To do.

In steps S118 and S119, it is checked whether the display exceeds the range of the video sequence by fast-forwarding and rewinding. If the display exceeds the range of the video sequence, the high-speed playback operation is terminated.

First, it is determined in step S118 whether or not it is out of the forward range, and then in step S119 it is determined whether or not it is out of the reverse range.

In step S120, it is determined whether a jump destination GOP exists, and if so, step S122.
Is updated to the jump destination GOP, and the process returns to step S111.

By performing the above processing, high-speed reproduction using the frame position information file is performed.

Although the flowchart of FIG. 8 shows an example in which the number of displayed images p for each GOP is 1 to 3, the present invention does not limit the value of p.

This is because the conditional branch is n in step S114.
Can be realized by adding a process when p is 4 or more.

Next, the editing process according to the present embodiment will be described.

The editing method according to the present invention is characterized in that a recorded video sequence can be reproduced in an arbitrary order without being changed.

This function is called a user program.

In the user program, this is performed by setting a plurality of items shown in FIG.

One item corresponds to the reproduction of a moving image of one scene. The “previous item number” and the “next item number”
The number of the item corresponding to the scene reproduced before and after the target item is stored.

The “VSS number” indicates which VSS file data the scene to be played back. The “start position” and the “end position” store the pointer indicating the frame position of the VSS_ADR file to indicate the playback start position and playback position. Indicates the end position.

In the "screen effect", it is possible to specify processing such as normal reproduction, slow reproduction, double speed reproduction, mosaic processing, and blur processing.

A method for setting a user program will be described with reference to a flowchart shown in FIG.

In the step S130, it is confirmed whether or not there is an unused item.

This can be realized by preparing a table indicating use or non-use for each item as shown in FIG. 6, for example, and referring to this table.

If a new item can be created, step S
At 131, a VSS file to be edited is selected.

In this case, for example, a representative screen of a VSS file is displayed as an index image, and the editor can select from the index images.

In step S132, the range of the video scene to be registered in the user program is specified using normal reproduction and special reproduction.

In step S133, the screen effect of the specified range of video data is specified.

In step S134, the order in which the specified reproduction is to be performed among the instructions registered in the user program is specified.

In step S135, the VSS number, start position, end position, screen effect number, previous item number, and next item number are stored in a memory (not shown) in the editing apparatus.

At this time, if the specified item is the first one to be executed, the item number is stored in the previous item number, and if the specified item is the last one to be executed, the next item number is stored. The value of the item number will be used.

In step S136, the value of the item number used in the table of FIG. 6 is changed from unused to used.

In steps S137 and S138, the link information of the item executed immediately before (the next item number) is updated. In steps S139 and S140, the link information of the item executed immediately after (the previous item number) is updated.

By repeating the above processing, a user program can be configured.

The user program shown in FIG. 5 of the above embodiment and the table shown in FIG. 6 are stored on a disc as information for managing a plurality of video sequences.

By using a user program,
Since the editing can be performed without changing the video sequence recorded on the disc, the edited contents can be returned to the original state by deleting the user program items.

It is also conceivable to create more reproduction patterns by creating a plurality of user programs.

When playback is performed according to the user program created as described above, if playback is instructed from the middle of the video sequence, a frame predicted from a temporally earlier image that is not actually played back is displayed. The reproduced image may be distorted.

In order to prevent such a situation, the reproduction start position is set at the beginning of the GOP, and the detection unit b23 shown in FIG. 2 detects the broken link flag and changes the value for the first GOP reproduced from the middle. It is necessary to either do not transfer the data of the B frame predicted from the unreproduced image to the video decoder 22 in FIG. 2 or do not display the image of the B frame predicted from the unreproduced image decoded by the video decoder. There is.

Here, the broken link is an MPEG link.
Is a flag for setting whether or not the first B picture of the GOP defined by the above can be accurately reproduced.

The user program of the above embodiment is
Only the video scene selected by the editor can be played back, but since the operation of rewriting the video sequence itself is not performed, the video scene that is not played back by the user program is not erased from the disc, and as a result, the remaining recording time of the disc is reduced. Would.

A processing method for erasing coded data of a video scene that is not necessary will now be described with reference to the flowchart of FIG.

In steps S150 and S151, a VSS file to be deleted is selected from an index image (not shown), and a range of a video scene to be deleted is specified by performing reproduction and special reproduction.

In steps S152, S153 and S155, it is confirmed whether or not the scene to be deleted includes the beginning and end of the video sequence.

If the deleted scene includes either the beginning or end of the video sequence, the length of the VSS file is reduced in step S156.

This operation is performed by changing the file data length of the TOC area of the disk, the link information, the management table of the free information of the logical block, and the start logical block number when a part including the head of the video sequence is deleted. Done.

In steps S158 and S159, when the video scene to be deleted does not include the beginning and end of the video sequence, and is an intermediate scene, the video scene is deleted from the beginning of the video sequence to immediately before the deleted scene and immediately after the deleted scene. The video is divided into two pieces of video data until the end of the sequence.

In this case, the data length of the original VSS file is shortened from the beginning of the video sequence to immediately before the deleted scene, and a new VSS file is formed immediately after the deleted scene to the end of the video sequence.

The new VSS file is stored in the TOC of the disk.
Only the file name, file data length, starting logical block number, and link information need be recorded in the area, and there is no need to update the contents of the file data area on the disc.

The new VSS file is numbered according to the method described later.

A frame position information file corresponding to the changed or created VSS file is also changed or created.

It is confirmed whether the video scene to be deleted is referred to in the user program, and if so, the target item is deleted from the user program.

At step S154, the VSS file is deleted when the scene to be deleted is the entire video sequence.

The VSS file is deleted according to a method described later.

In the above-described embodiment, the deletion of the moving image scene specifies the range to be deleted. On the contrary, the range to be left may be specified and the other moving image scenes may be deleted.

In the moving image scene deletion according to the above-described embodiment, the VSS file whose leading part has been deleted, or 2
Since the data at the beginning of the video sequence is changed in the corresponding frame position information file for the VSS file newly created by being divided into two video scenes, the position from the beginning of the video sequence indicating the frame position is changed. The value before deletion cannot be used as it is for the relative block number.

On the other hand, the VS in which a part of the head is deleted
The S file is the number of blocks of the deleted video scene in the original video sequence, and the VSS file newly created by dividing into two video scenes is the number of blocks from the beginning to the end of the deleted scene in the original video sequence. When the offset value is set at the beginning of the frame position information file, and the frame position information file is referred to, the offset value is subtracted from the relative block number indicated in the frame position information table. Can be performed.

FIG. 4 shows frame position information to which an area for storing an offset value is added.

With respect to the offset value, an area for recording an offset is prepared in advance at the beginning of all newly created frame position information files, and the offset value is set to 0 for a frame position information file that does not require an offset. Configurations are possible.

Next, new creation and deletion of a VSS file will be described.

FIG. 12 is a table showing whether or not a VSS file is created in the order of VSS numbers.

By referring to this table, the number of the unused VSS file can be confirmed.

FIG. 11 shows a table for determining the display order of index images (not shown).

When creating a new VSS file, FIG.
VS that creates a new number when an unused VSS file number is detected by referring to the table of No. 2 in numerical order.
S number.

Then, the number of the new VSS file is added to the table of FIG. When deleting a VSS file, the VSS file of the number specified in the table of FIG. 12 is changed to an unused state, and in the table of FIG.
Delete the item indicating the VSS file of the specified number,
The order of the VSS files displayed after the deleted item is increased by one.

Then, the VSS file and the corresponding V
SS_ADR file name, file size,
The VSS file and the corresponding VSS_A are deleted by deleting the start logical block number and the link information in the case where the link information is not recorded in the continuous area from the TOC area of the disk and changing the management table of the free information of the logical block.
Delete the DR file from the file system.

It is checked whether the VSS file to be deleted is referenced in the user program, and if so, the target item is deleted from the user program.

FIG. 13 shows an example in which the VSS file is deleted, and then a new VSS file is created.

In the order shown in FIG.
FIG. 11B shows the state of the table when VSS # 3 is deleted when VSS # 6 exists.

Thereafter, when a new VSS file is created, the file name becomes VSS # 3 shown in the table as an unused state, and the display order of the index images is as shown in FIG.

In the above-described creation and deletion of the VSS file, the tables shown in FIGS. 11 and 12 are recorded on the disk as files.

Further, by executing the above-described method of creating and deleting a VSS file, the numbers of the created VSS files do not need to be consecutive, and when deleting a VSS file, the numbers of other VSS files are reduced. VSS
There is no need to change the file name.

Next, another embodiment of the present invention will be described.

FIGS. 18 and 19 show a moving picture recording apparatus and a moving picture reproducing apparatus according to another embodiment of the present invention.

In the figure, a semiconductor memory 170 is used as a recording medium for a video sequence.

In the example using a semiconductor memory, FIGS.
The conversion unit a20, the control unit 15, and the pickup 18 used in the apparatus using the disc as a recording medium are deleted.

The TOC management unit 19 and the conversion unit b24 shown in FIGS. 18 and 19 output address values for directly accessing the semiconductor memory.

In this embodiment, the recording, reproduction, and editing processes are performed in the same manner as in the embodiment using the preceding disk as a recording medium. It can be carried out.

[0215]

As described above, according to any one of claims 1 to 4, or any of claims 9 to 13, compressed video data and audio data are recorded on a disk. The GOP start position,
It manages the end position of the intra-coded frame and the end position of the forward prediction coded frame, and performs high-speed playback and editing with a smaller memory than managing the start position and end position of all I frames and P frames. It is possible to manage the frame position information for this purpose.

[0216] Further, in any one of claims 5 to 8,
Alternatively, according to any one of the fourteenth to eighteenth aspects, the disk and the semiconductor memory recorded according to the first or ninth aspect are reproduced at high speed and reversed at high speed with a memory having the same capacity as the moving picture recording apparatus. There is an effect that can be
In addition, since the content of the frame position information to be managed is a relative data amount from the beginning of the video sequence and is not a value of a physical sector of the disk or an absolute address value of the semiconductor memory, the content from the recorded medium to another medium is There is an effect that the video sequence and the frame position information file are transferred, and high-speed reproduction using the frame position information file can be performed on the transfer destination medium.

According to the third, seventh, eleventh, or sixteenth aspect of the present invention, when partial data including the head of multiplexed data is deleted,
By storing the number of blocks to be deleted as an offset value, it is only necessary to delete the portion corresponding to the deleted scene from the item of the frame position information file before deletion and to shorten the interval, and it is not necessary to change the value of the item effective.

According to the thirteenth and eighteenth aspects of the present invention, high-speed reproduction and editing can be performed efficiently only by adding a memory and a detection unit for handling a frame position information file. In the present embodiment, the encoded data compressed by the MPEG method is used. However, other compression methods can be applied only by changing according to the compression method using a memory and a detection unit.

[0219] In the invention of claim 19 or claim 20, it is possible to reproduce arbitrary video scenes in an arbitrary order by using information such as a pointer indicating a position recorded in the frame position information. Therefore, the recorded encoded data can be edited without rewriting, and the original state can be restored by deleting the set pointer.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a moving image recording apparatus according to the present invention.

FIG. 2 is a diagram illustrating a configuration of a moving image reproducing apparatus according to the present invention.

FIG. 3 is a diagram illustrating the contents of a frame position information file.

FIG. 4 is a diagram illustrating the contents of a frame position information file.

FIG. 5 is a diagram illustrating the contents of a user program.

FIG. 6 is a diagram showing a table for managing items of a user program.

FIG. 7 is a flowchart illustrating a flow of a process of recording a frame position information file.

FIG. 8 is a flowchart showing a flow of high-speed reproduction processing.

FIG. 9 is a flowchart showing a flow of creating a user program.

FIG. 10 is a flowchart showing the flow of processing for deleting a part of a video sequence.

FIG. 11 is a diagram showing a table for managing a video sequence.

FIG. 12 is a diagram showing a table for managing a video sequence.

FIG. 13 is a diagram showing an example of deleting a video sequence.

FIG. 14 is a diagram illustrating a compression process according to the MPEG system.

FIG. 15 is a diagram illustrating an operation of high-speed reproduction according to the present invention.

FIG. 16 is a diagram showing a disk used in the embodiment of the present invention.

FIG. 17 is a diagram showing a part of a TOC area.

FIG. 18 is a diagram illustrating a configuration of another moving image recording device of the present invention.

FIG. 19 is a diagram illustrating a configuration of another moving image playback device of the present invention.

FIG. 20 is a diagram illustrating a conventional configuration.

[Explanation of symbols]

 Reference Signs List 10 ECC 11 Detecting unit a 12 Video / Audio multiplexing unit 13 Audio encoder 14 Video encoder 15 Control unit 16 Memory 17 Disk 18 Pickup 19 TOC management unit 20 Converter unit a 21 Audio decoder 22 Video decoder 23 Detector b 24 Converter b 25 Video / audio separation unit 31 Frame position storage area 32 Identification flag 33 GOP start position 34 I frame end position 35 P frame end position 40 Offset 130, 140 to 141 GOP 131, 144 to 145 P frame 132 B frame 143 I frame 151 TOC 152 File data area 170 Semiconductor memory 200 Next sequence address 201 Area table address 202 Next area address 203 Start sector number 204 End sector number 205 Start frame address 206 Next frame address 207 Key start sector 208 Key end sector 209 I, P flag 210 Video sequence 1 (region 1) 211 Video sequence 1 (region 2) 212-219 Physical sector

Claims (20)

[Claims] 1. A method for recording, on a recording medium, multiplexed data obtained by multiplexing a plurality of data including at least video encoded data obtained by encoding video data and audio encoded data obtained by encoding audio data, comprising: When a frame is defined as one unit, a start position of the one unit for each unit, an end position of one or a plurality of video frames encoded by the first method in the one unit, and one Or having frame position information indicating an end position of a plurality of video frames encoded by the second method, wherein the frame position information is a relative data length from the beginning of the multiplexed data; A moving image recording method, wherein information is recorded separately from the multiplexed data. 2. The frame position information includes a start position of one unit when a plurality of frames indicated by a relative position from the head of the multiplexed data is defined as one unit, and a video encoded by the first method. The moving image according to claim 1, wherein the moving image is configured by an ending position of a frame, an ending position of a video frame encoded by a second method, and an identification flag for discriminating the respective positions. Recording method. 3. An area for storing an offset value is added to frame position information of multiplexed data, and when partial data including the head of the multiplexed data is deleted, the number of deleted blocks is set to an offset value. The moving image recording method according to claim 1 or 2, wherein: 4. The multiplexed data is obtained by dividing video encoded data and audio encoded data and combining a packet to which a header is added and one or more packets,
When the multiplexed data composed of the pack is divided into blocks of a fixed length, the start position of the one unit in which a plurality of frames is one unit is set to the start position of the one unit. A block including a head of a pack including a head, and an end position of a video frame encoded by the first method including an end of a packet including an end of the video frame encoded by the first method. A block or a block including the end of a packet including the head of the video frame next to the video frame encoded by the first technique, and a video frame encoded by the second technique. The end position is determined by the block including the end of the packet including the end of the video frame encoded by the second technique, or the next position of the video frame encoded by the second technique. 2. The method according to claim 1, wherein any one of the blocks including the end of the packet including the head of the video frame is located, and the position of the block is a relative number of blocks with respect to the block constituting the head of the multiplexed data. The moving image recording method according to claim 3. 5. A method for reproducing from a recording medium multiplexed data obtained by multiplexing a plurality of data including at least video encoded data obtained by encoding video data and audio encoded data obtained by encoding audio data. When reproducing multiplexed data recorded on a recording medium by the recording method according to claim 1, data constituting a video frame used for reproduction is read from the recording medium with reference to the frame position information according to claim 1. A moving image reproducing method, characterized in that: 6. The frame position information includes a start position of one unit when a plurality of frames indicated by a relative position from the head of the multiplexed data is defined as one unit, and a video encoded by the first method. 6. The moving picture according to claim 5, wherein the moving picture is constituted by an end position of a frame, an end position of a video frame encoded by the second method, and an identification flag for discriminating the respective positions. Playback method. 7. When an area for storing an offset value is added to frame position information of multiplexed data and partial data including the head of the multiplexed data is deleted, the number of deleted blocks is set to an offset value. 7. The moving image reproducing method according to claim 5, wherein: 8. The multiplexed data is obtained by dividing video encoded data and audio encoded data, adding a header-added packet and one or more packets,
When the multiplexed data composed of the pack is divided into blocks of a fixed length, the start position of the one unit in which a plurality of frames is one unit is set to the start position of the one unit. A block including a head of a pack including a head, and an end position of a video frame encoded by the first method including an end of a packet including an end of the video frame encoded by the first method. A block or a block including the end of a packet including the head of the video frame next to the video frame encoded by the first technique, and a video frame encoded by the second technique. The end position is determined by the block including the end of the packet including the end of the video frame encoded by the second technique, or the next position of the video frame encoded by the second technique. 6. The method according to claim 5, wherein any one of the blocks including the end of the packet including the head of the video frame is included, and the position of the block is determined by the relative number of blocks with respect to the block constituting the head of the multiplexed data. 8. The moving image reproducing method according to claim 7. 9. A recording apparatus for multiplexing a plurality of data including at least video encoded data obtained by encoding video data and audio encoded data obtained by encoding audio data onto a recording medium, comprising: When a frame is defined as one unit, a start position of the one unit for each unit, an end position of one or a plurality of video frames encoded by the first method in the one unit, and one Or frame position information obtaining means for obtaining frame position information indicating an end position of a plurality of video frames encoded by the second method, wherein the frame position information is a relative data length from the beginning of the multiplexed data. And a recording means for recording the frame position information separately from the multiplexed data. 10. The frame position information includes a start position of one unit when a plurality of frames indicated by a relative position from the head of the multiplexed data is defined as one unit, and a video encoded by the first method. The moving image according to claim 9, wherein the moving image is constituted by an end position of a frame, an end position of a video frame encoded by the second method, and an identification flag for discriminating the respective positions. Recording device. 11. An area for storing an offset value is added to frame position information of multiplexed data, and the number of blocks deleted when partial data including the head of the multiplexed data is deleted is used as an offset value. The moving picture recording apparatus according to claim 9 or claim 10, wherein 12. The multiplexed data is composed of a packet obtained by dividing video encoded data and audio encoded data and adding a header, and a pack obtained by combining one or more packets and adding a header. When the multiplexed data configured by the above is divided into blocks of a fixed length, the start position of the one unit having a plurality of frames as one unit is a block including the head of the pack including the head of the one unit, Further, the end position of the video frame encoded by the first technique is determined by a block including the end of the packet including the end of the video frame encoded by the first technique, or the end position of the video frame encoded by the first technique. Any of the blocks including the end of the packet including the beginning of the video frame following the encoded video frame, and the video frame encoded by the second technique. The end position of the block including the end of the packet including the end of the video frame encoded by the second technique, or the beginning of the video frame next to the video frame encoded by the second technique. 12. The block according to claim 9, wherein the block includes any one of the blocks including the end of the included packet, and the position of the block is a relative number of blocks with respect to a block constituting the head of the multiplexed data. The moving image recording device according to any one of the above. 13. Detecting a code amount of multiplexed data, a start code of one unit of a plurality of frames as one unit, a start code of a video frame, and a video frame encoding method, and calculating frame position information. 13. A computer according to claim 9, further comprising: a calculating unit; a memory for storing the frame position information calculated by the calculating unit; and a converting unit for converting the frame position information into a physical address of a recording medium. 5. The moving image recording device according to item 1. 14. A reproducing apparatus for reproducing a multiplexed data from a recording medium in which a plurality of data including at least video encoded data obtained by encoding video data and audio encoded data obtained by encoding audio data are multiplexed. When reproducing the multiplexed data recorded on the recording medium by the recording apparatus according to claim 9, by referring to the frame position information according to claim 9, data constituting a video frame used for reproduction is read from the recording medium. A moving image reproducing apparatus comprising reading means. 15. The frame position information includes a start position of one unit when a plurality of frames indicated by a relative position from the head of the multiplexed data is defined as one unit, and a video encoded by the first method. 15. The moving picture reproduction according to claim 14, wherein the moving picture reproduction is constituted by a frame end position, a video frame end position encoded by the second method, and an identification flag for discriminating the respective positions. apparatus. 16. An area for storing an offset value is added to frame position information of multiplexed data, and the number of blocks deleted when partial data including the head of the multiplexed data is deleted is used as an offset value. 16. The moving picture reproducing apparatus according to claim 14, wherein the moving picture is reproduced. 17. The multiplexed data is composed of a packet obtained by dividing video encoded data and audio encoded data and adding a header, and a pack obtained by combining one or more packets and adding a header. When the multiplexed data configured by the above is divided into blocks of a fixed length, the start position of the one unit having a plurality of frames as one unit is a block including the head of the pack including the head of the one unit, Further, the end position of the video frame encoded by the first technique is determined by a block including the end of the packet including the end of the video frame encoded by the first technique, or the end position of the video frame encoded by the first technique. Any of the blocks including the end of the packet including the beginning of the video frame following the encoded video frame, and the video frame encoded by the second technique. The end position of the block including the end of the packet including the end of the video frame encoded by the second technique, or the beginning of the video frame next to the video frame encoded by the second technique. 17. The method according to claim 14, wherein any one of the blocks including the end of the included packet is set, and the position of the block is set to a relative number of blocks with respect to a block constituting the head of the multiplexed data. A moving image playback device according to any one of the above. 18. A detecting means for detecting a start code of one unit, a start code of a video frame, and an encoding method of a video frame in which a plurality of frames are defined as one unit, a memory for storing frame position information, 18. Conversion means for converting position information into a physical address of a recording medium.
A moving image reproducing apparatus according to any one of the above. 19. The multiplexed data recorded by the moving image recording method according to claim 1 and / or the moving image reproduction according to claim 5 to 8. In the editing method for editing multiplexed data reproduced by the method, a reproduction start position and a reproduction end position of the multiplexed data are designated using frame position information, and the reproduction start position and the reproduction end position are designated. A moving image editing method comprising a user program for designating a reproduction mode of multiplexed data, wherein editing can be performed without changing multiplexed data. 20. Multiplexed data recorded by the moving picture recording apparatus according to claim 9;
And / or an editing device for editing the multiplexed data reproduced by the moving image reproducing device according to any one of claims 14 to 18, wherein a reproduction start position of the multiplexed data and A moving image editing apparatus comprising: a user program for designating a reproduction end position and a reproduction mode of multiplexed data in which the reproduction start position and the reproduction end position are designated, wherein editing can be performed without changing the multiplexed data. apparatus.