JP2014049902A - Image processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To divide a moving image file following a predetermined format, and to record it in a recording medium such that the file can be divided at a position where it can be correctly reproduced.SOLUTION: In the case of recording a moving image file recorded with a format in which a file size is specified so as to be set to the integer multiple of a determined size in another recording medium, when the upper limit of the file size in a file system corresponding to a copy destination recording medium is smaller than a copy object file size, the copy object file is divided in the middle. In this case, the predetermined number of invalid data are inserted into the copy object file such that the file size is set to the integer multiple of the size determined in the format, and the file is divided at a position where the file size is set to the integer multiple of the size determined in the format in the inserted portion of the invalid data. Thus, it is possible to solve such inconvenience that the file cannot be correctly reproduced from the copy destination recording medium.

Description

  The present invention relates to an image processing apparatus, and more particularly to a technique suitable for use in recording a moving image file recorded on a recording medium on another recording medium.

2. Description of the Related Art In recent years, an apparatus for recording a moving image on a random access medium such as a memory card or a hard disk (HDD) is known. In this type of apparatus, moving image data recorded on a recording medium is managed as a file according to a file system. Generally, a file system corresponding to each recording medium is determined.
An apparatus for copying a file such as a moving image between a plurality of recording media is also known (see, for example, Patent Document 1).

JP 2008-299948 A

  Currently, there is an upper limit on the size of a file that can be handled by the file system. In addition, the upper limit of the file size that can be handled varies depending on the file system. For example, in FAT32, the upper limit of the file size is 4 gigabytes (GB), but in UDF and Ex FAT, a file having a size exceeding 4 GB can be handled.

  Further, if the size of the file to be copied is larger than the upper limit of the file size by the file system of the recording medium to which the file is copied, copying cannot be performed. In such a case, it is necessary to divide the copy target file into a plurality of copies.

  However, depending on the standard of the file to be copied, when the file is simply divided and copied, it may not be correctly reproduced from the copy destination recording medium. For example, a video is H.264. In the AVCHD format, which is a format for a consumer recording device for encoding and recording in the H.264 format, various conditions are predetermined.

Therefore, when copying a moving image file recorded in such a format, there is a problem in that it cannot be correctly reproduced simply by dividing and recording so that the file size is smaller than the upper limit of the file system.
In view of the above-described problems, an object of the present invention is to allow a moving image file conforming to a predetermined format to be divided at a position where it can be correctly reproduced when the moving image file is recorded on a recording medium.

  The image processing apparatus of the present invention reads a moving image file including moving image data encoded by using intra-frame coding and inter-frame coding from a first recording medium and records it on a second recording medium. When the size of the copy target moving image file recorded on the first recording medium is larger than the upper limit size by the file system corresponding to the second recording medium, the copying target moving image file An insertion means for setting the position of the intra-coded frame that is equal to or smaller than the upper limit size as a dividing point, and inserting invalid data of a predetermined size between the dividing point and the immediately preceding moving image data; The invalid data inserted by the inserting means so that the size of the moving image file to be copied is an integral multiple of the size specified in the recording format. In part, by dividing the copied files, and having a control means for controlling said copying means to record the divided video files to the second recording medium.

  According to the present invention, when a moving image file conforming to a predetermined format is divided and recorded on a recording medium, it can be divided at a position where it can be correctly reproduced. As a result, the copied moving image file can be played back by the playback device in the same manner as the copy source between recording media having different file systems.

It is a block diagram which shows the structural example of the reproducing | regenerating apparatus of this embodiment. It is a figure explaining the main information which a clip information file stores. It is a figure explaining the relationship of the file stored in a recording medium. 5 is a flowchart illustrating a procedure for copying video content between recording media according to the first embodiment. 7 is a flowchart illustrating a procedure for copying an AV stream file between recording media according to the first embodiment. It is a figure which shows the example which showed the position which can insert a NULL packet. It is a figure which shows the image which inserted 32 NULL packets. It is a figure which shows the example of the AV stream file produced | generated by file division processing. 12 is a flowchart illustrating a procedure for copying video content between recording media according to the second embodiment. 10 is a flowchart illustrating a procedure for copying an AV stream file between recording media according to the second embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram illustrating a configuration example of an image processing apparatus to which the present embodiment is applied. The image processing apparatus of this embodiment processes a moving image recorded according to the AVCHD format.
The AVCHD format stipulates that the size of a moving image file is an integral multiple of a predetermined size (6 kilobytes (kB)). In addition, it is specified that the video encoding unit is completed within the video stream size, and that the video encoding unit arranged at the head of the video stream data is intra encoding.

  1 includes a control unit 100, a user interface 101, a video decoding unit 102, a temporary storage unit 103, an LCD 104, a recording medium control unit 105, a recording medium (A) 106, and a recording medium (B ) 107 and a bus 108.

  The control unit 100 controls the entire apparatus according to input from the user interface 101. The video decoding unit 102 receives and decodes the compressed and encoded video data from the temporary storage unit 103, and displays the decoded video data on the LCD 104. The temporary storage unit 103 is configured by a memory such as a DRAM.

  The temporary storage unit 103 encodes the encoded video data read from the recording medium (A) 106 as the first recording medium and the recording medium (B) 107 as the second recording medium, and management of the video data Accumulate information. Also, file system management information recorded on each recording medium is stored in the temporary storage unit 103. The temporary storage unit 103 serves as a work memory for processing performed by the control unit 100. The LCD 104 displays a playback video and menu related to the user interface. The LCD 104 also displays a list of representative images of content.

  The recording medium control unit 105 outputs the data stored in the temporary storage unit 103 to the recording medium (A) 106 and the recording medium (B) 107, or the recording medium (A) 106 and the recording medium (B) 107. Or the like, and the data input from the temporary storage unit 103 is stored. In addition, the control unit 100 is notified of the control results of the recording medium (A) 106 and the recording medium (B) 107.

  Each of the recording medium (A) 106 and the recording medium (B) 107 is a random access recording medium, and the recorded data is managed as a file according to a predetermined file system. In the present embodiment, for example, the recording medium (A) 106 is an SDXC memory card (SD Extended Capacity). The recording medium (A) 106 uses Ex FAT (Extended FAT) as a file system, and manages a video content file group conforming to a recording format described later. The recording medium (B) 107 is an SDHC memory card (SD High Capacity). The recording medium (B) 107 uses a FAT (File Allocation Table) 32 as a file system, and manages a content file group according to a recording format described later. The bus 108 transmits and receives moving image data and other data between the units of the image processing apparatus.

  The image processing apparatus according to the present embodiment has a function of reproducing a moving image file recorded on each recording medium. The control unit 100 generates a representative image of each moving image file recorded on the recording medium (A) 106 and the recording medium (B) 107 and displays it on the LCD 104. Then, the control unit 100 controls the recording medium control unit 105, and among these representative images, a moving image file corresponding to the representative image selected by the user interface 101 is recorded in the recording medium (A) 106 and the recording medium (B ) 107 is read out. Then, it is decoded by the video decoding unit 102 and displayed on the LCD 104.

  Further, the image processing apparatus according to the present embodiment has a copy function for recording a moving image file recorded on one recording medium on the other recording medium. For example, the control unit 100 reads a moving image file designated by the user interface 101 from among the moving image files recorded on the recording medium (A) 106 and stores the read moving image file in the temporary storage unit 103. Then, the control unit 100 performs necessary processing on the moving image file stored in the temporary storage unit 103 and writes it in the recording medium (B) 107 by the recording medium control unit 105.

Next, a moving image recording format handled by the image processing apparatus of the present embodiment will be described. The recording format in this embodiment has a three-layer structure of an index, a playlist, and an AV clip.
The AV clip in the lowermost layer is composed of two types of data: an AV stream that is moving image data and clip information that is additional information of the moving image. The AV stream and clip information exist as independent files on the file system, and one AV clip is composed of two files, the AV stream file and the clip information file.

  The AV stream file and the clip information file are assigned the same AV clip number as the file name on the file system so that the correspondence can be understood. The AV stream file includes encoded moving image data. The moving image data is encoded with H.264 / MPEG4-AVC. H. In H.264 / MPEG4-AVC, moving image data is encoded using intraframe encoding, forward prediction interframe prediction encoding, and bidirectional prediction interframe prediction encoding. Here, the intra-coded screen is called an I picture. The encoded moving image data is divided into packets each having a predetermined size (188 bytes) and converted into a PES (Packetized Elementary Stream) format. Furthermore, the time-stamped video data in the TTS format to which each packet (PES packet) is appended with a time stamp and converted to the Transport Stream format (hereinafter referred to as the TTS format) is defined by 4-byte time stamp data and ISO / IEC 13818-1. It consists of a 192-byte packet that combines TS 188Byte data.

  The time stamp data represents the time at which the subsequent TS 188 Byte arrives at the decoder with 27 MHz accuracy, and the minimum value of the time stamp data difference between TTSs depends on the bit rate of TS 188 Byte. Each AV stream file starts from an I picture, and the AV stream file can be decoded and reproduced by itself. Furthermore, the AV stream file has a data length that makes the file size an integral multiple of 6 kB (32 packets in TTS) so that it can be easily accessed via the file system. If the size alignment is not reached with only valid data, it is stuffed with NULL data TTS.

  As shown in FIG. 2, the clip information file includes stream information such as the bit rate and aspect of the corresponding AV stream. It contains a conversion table that associates the display start time (Presentation Time Stamp: hereinafter referred to as PTS) of all I pictures included in the AV stream file with the offset from the beginning of the AV stream file. By using this conversion table, it is possible to acquire the read start position / size of the AV stream corresponding to the PTS at which playback is to be started / finished.

  Above the AV clip is an intermediate layer playlist. The playlist file is composed of item connection information indicating the connection relationship between items, which will be described later, and an item in which AV clips to be played back are arranged in the playback order. Item stores information for acquiring the file name of the AV clip, and the playback start point (hereinafter referred to as IN point) and playback end point (hereinafter referred to as OUT point) of the AV clip. Then, by tracing the items stored in the playlist in the storage order, any range of the AV clip can be played back in a desired order.

  The connection relationship indicated by item connection information is information indicating whether item and item are contents that can be continuously played back. Since the AV stream file in the AV clip managed by item is managed using the file system, the upper limit size determined by the file system cannot be exceeded.

  Therefore, in order to store long-time contents in this recording format, ES (elementary stream) is kept continuous with the I-picture head packet as a boundary so that the AV stream file is smaller than the upper limit size determined by the file system. Split as it is. And it is necessary to divide it into a plurality of AV clips and items.

  As described above, the AV clips and items divided for convenience need to be combined and played back so as to be played back continuously at the AV clip boundary under the restrictions of the file system. , Included in the item connection information of this playlist. The index file located at the top is a file that is first read by the playback device in which the recording medium is inserted, and a playlist to be played back by the playback device is stored in this order.

FIG. 3 is a diagram showing an example of a file group recorded in accordance with such a recording format.
There is a one-to-one correspondence between AV stream files and clip information files. The AV stream file 1 and the clip information file 1, the AV stream file 2 and the clip information file 2, the AV stream file 3 and the clip information file 3, and the AV stream file 4 and the clip information file 4 are associated with each other.

  The AV clip 1 is composed of an AV stream file 1 and a clip information file 1. The AV clip 2 is composed of an AV stream file 2 and a clip information file 2. The AV clip 3 includes an AV stream file 3 and a clip information file 3. The AV clip 4 includes an AV stream file 4 and a clip information file 4.

  The playlist file includes a playlist file 1 and a playlist file 2. Playlist file 1 stores two items, item 1-1 associates the entire area of AV clip 1, item 1-2 associates the entire area of AV clip 2, and item 1-1 and item 1-2 are item. Linked playback is instructed by the connection information. Accordingly, the end of the AV stream file 1 indicated by item 1-1 and the start of the AV stream file 2 indicated by item 1-2 are continuous at the ES level.

  The playlist file 2 also stores two items. Item 2-1 associates the entire area of the AV clip 3, and item 2-2 associates a part of the AV clip 4. Between item 2-1 and item 2-2, an uncoupled playback instruction is made with item connection information. The end of the AV stream file 3 indicated by item 2-1 and the start of the AV stream file 4 indicated by item 2-2 Is not continuous at the ES level.

  The index file stores a playlist file 1 and a playlist file 2 in that order. That is, when this recording medium is inserted into a playback device, first, the entire AV clip file 1 pointed to by item 1-1 and the entire AV clip file 2 pointed to by item 1-2 are seamlessly and continuously played back. The entire AV clip file 3 indicated by item 2-1 is reproduced. However, seamlessness is not ensured between the playback of item1-2 and item2-1. Finally, a part of the AV clip file 4 indicated by item 2-2 is reproduced. Similarly, seamlessness is not guaranteed between playback of item 2-1 and item 2-2.

Next, the operation at the time of reproduction of the image processing apparatus of this embodiment will be described.
The image processing apparatus according to the present embodiment operates as follows when a recording medium is loaded or the power is turned on. The control unit 100 uses the recording medium control unit 105 to transfer an index file, all playlist files, and all clip information files from the recording medium (A) 106 or the recording medium (B) 107 from the recording medium. Read out and store in the temporary storage unit 103.

  First, by reading these files, video content information can be obtained before the AV stream file is read. As a result, it is possible to know information such as whether or not the video decoding unit 102 can reproduce and information such as an address on the recording medium into which the AV stream file is read from the PTS indicated by the playlist file.

  First, the control unit 100 creates index images of all contents registered in the index file and displays them on the LCD 104. The Index image is a reduced arrangement of I-Pictures arranged at the beginning of an item that is not indicated for combined playback in the item connection information. In the example of FIG. 3, the first I picture of the AV stream file 1 indicated by item 1-1, the first I picture of the AV stream file 3 indicated by item 2-1 and the I picture in the middle of the AV stream file 4 indicated by item 2-2 are targeted. It becomes.

  The control unit 100 acquires the address of each I picture on the AV stream file from the clip information file. Then, the control unit 100 reads the data of each I picture from the recording medium (A) 106 or the recording medium (B) 107 by the recording medium control unit 105, and the result decoded by the video decoding unit 102 is displayed on the LCD 104. The

  The user selects a moving image to be reproduced from the index screen displayed on the LCD 104 and gives an instruction from the user interface 101. When receiving the instruction, the control unit 100 similarly acquires the corresponding I picture storage position of the AV stream file indicated by the corresponding item using the AV clip information file. Then, the control unit 100 causes the recording medium control unit 105 to sequentially read the corresponding I picture and the subsequent file end to the temporary storage unit 103, decode it by the video decoding unit 102, and display it on the LCD 104. When the item has been played back, if there is an item instructing linked playback in the item connection information, the same operation is performed on the item. If there is no item for instructing linked playback, or if the last item in the playlist file is reached, the index image output is restored.

  Next, a video content copy function between recording media will be described. Here, a case where a moving image file is copied from the recording medium (A) 106 to the recording medium (B) 107 using the flowcharts of FIGS. 4 and 5 and the AV stream file divided image of FIG. 6 will be described as an example. .

The process starts when the user selects a moving image to be copied on the index screen in the above-described reproduction operation and is instructed to start copying.
In S401 in FIG. 4, the control unit 100 acquires the AV clip number and the playlist file number of the recording medium (B) 107 that is the copy destination with the largest number. The AV clip number generated at the time of copying uses a value obtained by incrementing this numerical value by one.

In step S402, the AV stream file is copied.
The process performed in S402 will be described in more detail with reference to FIGS.
In step S501, the control unit 100 determines whether the size of the AV stream file to be copied is equal to or less than the upper limit size limit in the file system of the copy destination recording medium. In this example, since the recording medium (B) 107 as the copy destination uses FAT32, it is determined whether or not the AV stream file is 4 GB or less. If the size is equal to or smaller than the upper limit size, the process advances to step S502, and the control unit 100 causes the recording medium control unit 105 to read the file to be copied from the recording medium (A) 106 and copy the AV clip number acquired in step S401 as the file name. Recording is performed on the recording medium (B) 107 which is the previous recording medium.

If the upper limit size is exceeded in S501, the process proceeds to S503 and thereafter.
In step S <b> 503, the control unit 100 uses the AV clip information to search for an I picture that is arranged at a position that is equal to or less than the upper limit size and has the largest offset in the moving image data in the copy target AV stream file. Then, the control unit 100 sets the offset position of the I picture as a division point.

Next, in S504, the control unit 100 determines whether or not a predetermined number of NULL packets (packets storing invalid data) can be inserted between the leading packet of the I picture as a division point and the immediately preceding video packet. judge. In the present embodiment, it is determined whether or not 32 null packets can be inserted.
Here, the reason for inserting 32 null packets is as follows. As described above, in the AVCHD format, the file size needs to be an integral multiple of 6 kB. Since the size of one TTS packet is 192 bytes, the size of 32 TTS packets is 6144 bytes, which is larger than 6 kB. For this reason, if a maximum of 32 TTS packets are inserted, the file size becomes an integral multiple of 6 kB at any position, and the file may be divided at that position.

  FIG. 6A is a diagram illustrating an example in which a null packet can be inserted. The TTS stores a time stamp indicating the supply timing to the 4-byte decoder. If the total difference of the time stamps is larger than the packet supply time of 32 packets, it can be determined that insertion is possible. If 32 packets cannot be inserted, the process proceeds to S505, and the previous I picture is selected as a new division point from the AV clip information, and the process returns to S504.

  If it is determined in S504 that 32 packets can be inserted, the process proceeds to S506. In step S506, the control unit 100 instructs the recording medium control unit 105 to play back the AV stream file to be copied from the beginning, and sequentially record up to the first packet of the I picture as the division point on the copy destination recording medium. To do. When the AV stream data recorded on the copy destination recording medium reaches the first packet of the I picture at the division point, the control unit 100 records so as to insert 32 NULL packets following the immediately preceding video packet. The medium control unit 105 is instructed (S507). FIG. 6B is a diagram showing an image in which 32 NULL packets are inserted.

  Next, in step S508, the control unit 100 divides the file being recorded so as to divide the file being recorded at a position that is an integer multiple of 6 kB immediately before the AV stream data division point after the insertion of the NULL packet. To instruct. The recording medium control unit 105 records up to the TTS packet immediately before the division point on the copy destination recording medium, and generates one AV stream file. FIG. 6C is a diagram illustrating an example of an AV stream file generated by the file division process.

  In step S509, the control unit 100 determines whether the remaining uncopied size in the copy target AV stream data is equal to or smaller than the upper limit size. If the remaining size is larger than the upper limit size, the process returns to S503 and the process is repeated. If the remaining size is less than or equal to the upper limit size, the process advances to step S510, and the control unit 100 reads the remaining AV stream data, records it on the copy destination recording medium, and generates one AV stream file. The control unit 105 is instructed.

Returning to the flowchart of FIG.
In step S402, after copying the AV stream file, in step S403, the control unit 100 generates an AV clip information file corresponding to the copied AV stream file and records it on the copy destination recording medium. The unit 105 is instructed. In this case, in FIG. 5, when the copy target AV stream data is divided and copied, the clip corresponding to the newly divided AV stream file is based on the clip information file corresponding to the copy target AV stream file. Generate an information file. When the copy target AV stream data is copied without being divided, the original AV clip information file is recorded as it is on the copy destination recording medium.

  In step S404, the control unit 100 generates a playlist file corresponding to the copied AV stream file, and instructs the recording medium control unit 105 to record the playlist file on the copy destination recording medium. The file name used for copying is the same as that acquired in S401, and item is masked except for the AV clip to be copied. When the AV stream file is divided in S402, the item is divided into two, and the PTS of the I picture as the division point is acquired from the AV clip information and used as the IN / OUT point of the item.

  Finally, in step S405, the control unit 100 updates the copy destination index file, instructs the recording medium control unit 105 to register the playlist file copied in step S404, and finishes copying the AV stream file. .

  As described above, according to the playback apparatus of the present embodiment, video content can be copied between recording media with different file systems. The copied video content has an AV stream file that is an integral multiple of 6 kB, and can be reproduced from an I picture. Furthermore, there is AV clip information corresponding to the AV stream file, and there is a playlist that stores this AV clip. Further, since this playlist is registered in the index file, the video content can be played back on the playback device in the same manner as the copy source.

(Second Embodiment)
Next, a copy operation when the remaining capacity of the copy destination recording medium is equal to or smaller than the size of the video content to be copied will be described. The configuration of the image processing apparatus, the recording format, and the operation at the time of reproduction are the same as those in the first embodiment, and thus description thereof is omitted.
Next, a specific copy operation will be described by taking an example of copying video content from the recording medium (A) 106 to the recording medium (B) 107 with reference to the flowcharts of FIGS.

  When the user selects a moving image to be copied and is instructed to start copying on the index screen in the above-described playback operation, the control unit 100 records the recording medium (B) 107 that is the copy destination in S701 of FIG. Get the remaining amount. In step S <b> 702, the control unit 100 acquires the AV clip number and the playlist file number of the recording medium (B) 107 that is the copy destination that has the largest number. The AV clip number generated at the time of copying uses a value obtained by incrementing this numerical value by one.

In step S703, the AV stream file is copied.
The process of S703 will be described in more detail with reference to FIG.
In step S <b> 801, the control unit 100 determines whether the total size of the AV stream file, AV clip information file, and playlist file that is the file group to be copied is equal to or less than the remaining recordable amount of the copy destination recording medium. Is determined. If the total size of the files to be copied is equal to or less than the remaining recordable amount of the copy destination recording medium, the process proceeds to S501 in FIG. 5 to execute the processing described in the first embodiment.

  If the remaining capacity is exceeded in S801, the control unit 100 calculates a value obtained by subtracting the total size of the AV clip information file and the playlist file that are to be copied other than the AV stream file from the remaining recording amount in S802. To do. Then, the control unit 100 detects, using the AV clip information, an I picture arranged at a position having the largest offset, which is equal to or smaller than the calculated size, among the AV stream data stored in the AV stream file to be copied. To do. Then, the control unit 100 sets the offset position of the I picture as a division point.

  Next, the control unit 100 determines whether or not 32 null packets (packets storing invalid data) can be inserted between the leading packet of the I picture that is the division point in S802 and the immediately preceding video packet. To do. If insertion of 32 packets is impossible, the process proceeds to S804, and the previous I picture is selected as a new division point from the AV clip information, and the process returns to S803.

  If it is determined in S803 that 32 packets can be inserted, the process proceeds to S805. In step S805, the control unit 100 reproduces the AV stream data to be copied from the beginning, and records it in the recording medium control unit 105 so as to sequentially record the portion immediately before the first packet of the I picture as the division point on the copy destination recording medium. Instruct. When the leading packet of the I picture that is the division point is reached, the control unit 100 instructs the recording medium control unit 105 to insert 32 NULL packets following the immediately preceding video packet in S806.

  Next, in step S807, the control unit 100 controls the recording medium so as to divide the AV stream data to be copied immediately before the division point of the AV stream data after insertion of the NULL packet and at a position that is an integral multiple of 6 kB. The unit 105 is instructed. Then, the control unit 100 instructs the recording medium control unit 105 to record up to the TTS packet immediately before the division point on the copy destination recording medium and generate one AV stream file.

Returning to the flowchart of FIG.
After copying the AV stream file in S703, the control unit 100 instructs the recording medium control unit 105 to copy the AV clip information file (S704). When the AV stream file is not divided at the time of copying, the file name is simply copied as having been acquired in S701. If the AV stream file is divided at the time of copying, the stream information is directly copied as a result of dividing the conversion table into two with reference to the dividing point and validating only the first half.

  Next, the control unit 100 instructs the recording medium control unit 105 to copy the playlist file (S705). The file name used for copying is the same as that acquired in S701, and item is masked except for the AV clip to be copied. When the AV stream file is divided at the time of copying, the PTS of the I picture with item as the OUT point is acquired from the AV clip information and used. Finally, the control unit 100 registers the playlist file copied in S704 in the copy destination index file, and ends the video content copying (S706).

  As described above, by using the video content copy function of the playback apparatus according to the present embodiment, even when the remaining capacity of the copy destination is less than the amount of data of the video content to be copied, the video is filled to the full capacity of the copy destination. Content can be copied. The copied video content has an AV stream file that is an integral multiple of 6 kB, and is made from an I picture.

  Furthermore, there is AV clip information corresponding to the AV stream file, and there is a playlist that stores this AV clip. Furthermore, since this playlist is registered in the index file, the video content can be played back on the playback device in the same manner as the copy source.

(Other embodiments)
The present invention can also be realized by executing the following processing. That is, software (computer program) that implements the functions of the above-described embodiments is supplied to a system or apparatus via a network or various computer-readable storage media. Then, the computer (or CPU, MPU, etc.) of the system or apparatus reads out and executes the program.

100 Control Unit 101 User Interface 102 Video Decoding Unit 103 Temporary Storage Unit 104 LCD
105 Recording medium control unit 106 Recording medium (A)
107 Recording medium (B)
108 Bus

Claims (4)

Copy means for reading a moving image file including moving image data encoded by using intra-frame coding and inter-frame coding from the first recording medium and recording it on the second recording medium;
When the size of the moving image file to be copied recorded on the first recording medium is larger than the upper limit size by the file system corresponding to the second recording medium, the upper limit is set in the moving image file to be copied. An insertion means for setting the position of the frame encoded within the frame as a dividing point and inserting invalid data of a predetermined size between the dividing point and the immediately preceding moving image data;
The copy target file is divided by dividing the file to be copied in the invalid data portion inserted by the inserting means so that the size of the moving image file to be copied is an integral multiple of the size specified in the recording format. An image processing apparatus comprising: control means for controlling the copying means so as to record the moving image file on the second recording medium.   The inserting means determines whether invalid data of the predetermined size can be inserted between the division point and the immediately preceding moving image data based on a time stamp added to the moving image data, 2. The image processing apparatus according to claim 1, wherein when invalid data cannot be inserted, a position of an intra-frame encoded frame preceding the division point is set as a new division point. . In the first recording medium, a clip information file including information on an offset position of each intra-coded frame in the moving image file and a playlist file indicating a reproduction range of the moving image file are recorded. ,
The control means uses the clip information file and the playlist file corresponding to the moving image file to be copied, and uses the clip information file and the playlist file corresponding to the moving image file copied to the second recording medium. The image processing apparatus according to claim 1, wherein the image processing device is generated and recorded on the second recording medium. Copy means for reading a moving image file including moving image data encoded by using intra-frame coding and inter-frame coding from the first recording medium and recording it on the second recording medium;
When the size of the copy target moving image file recorded on the first recording medium is larger than the remaining recording capacity of the second recording medium, the copy target moving image file is less than the remaining recording amount, An insertion means for setting the position of the intra-coded frame as a dividing point, and inserting invalid data of a predetermined size between the dividing point and the immediately preceding moving image data;
The copy target file is divided by dividing the file to be copied in the invalid data portion inserted by the inserting means so that the size of the moving image file to be copied is an integral multiple of the size specified in the recording format. An image processing apparatus comprising: control means for controlling the copying means so as to record the moving image file on the second recording medium.

Images