JP2643769B2 - Image and audio editing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for converting a file including a frame containing an image signal and an encoded audio signal which have been converted into compressed and encoded data into a C file.
The present invention relates to an image / audio editing apparatus that reads from a recording medium such as a D-ROM or a hard disk, and merges, inserts, or deletes other files in frame units.

[0002]

2. Description of the Related Art An image / audio editing apparatus encodes an image and an audio, respectively, and stores a file stored on the CD-ROM.
And a device for reading from a recording medium of a hard disk or a hard disk, and merging or inserting or deleting with other files. In an image / audio editing apparatus, image information is usually recorded as compression-encoded data. The compression coding of image information is performed by discrete cosine transform (D
CT), quantization and entropy coding.

[0003] Also, the reproduction of compressed and encoded data is 8x8.
For each block unit, entropy decoding, inverse quantization, inverse DCT compression, and inverse expansion are performed. In addition, speech is usually recorded in a narrow sense, which is digitized and quantized, and recorded. Therefore, since the image information and the audio information are different in the compression process, there is a timing difference between them in the reproduction process. In the case of a moving image, the shift may look unnatural. Therefore, in the editing device, to prevent the occurrence of a shift at the time of reproduction of the image and audio,
In order to achieve synchronization, for example, as described in Japanese Patent Application Laid-Open No. 63-266580, it is necessary to repeat a reproducing operation to create an operation for adjusting the timing of an image and a sound, and to create header information determined from the operation.

[0004]

SUMMARY OF THE INVENTION The conventional image and
By the audio editing device, the file storing the image information of the compression-encoded data and the audio information of the encoded data is copied, and when the file is merged or inserted or deleted with another file, the original file is copied. There is a case where the compression information is different from the copy destination which is the file of the merging or insertion destination. At this time, a difference occurs between the image reproduction speed and the audio reproduction speed in the reproduction processing. Therefore, in the reproduction of the moving image, the image and the sound are not synchronized, and the image becomes unnatural.

[0005] When the editing process is repeated, the file from which the image and the audio information are copied becomes unknown, and the copyright may not be checked.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to prevent inconsistency in the playback speed of an image and a sound caused by editing or inserting or deleting image and sound files having different compression information, and It is an object of the present invention to provide an image / sound editing device that holds a history indicating a source of a sound copy source.

Therefore, according to the present invention, a frame memory for storing image signal and audio signal information in units of frames, and a discrete cosine transform or an inverse discrete cosine transform of the image signal stored in the frame memory are used. A discrete cosine transform / inverse discrete cosine transform (hereinafter referred to as DCT / inverse DCT), a quantization / inverse quantizer for performing quantization or inverse quantization of an image signal subjected to DCT, and a quantization transform An encoding / decoding encoder for compressing or decompressing the image signal being entropy-encoded or decompressing, and temporarily storing the image signal being subjected to DCT conversion, quantization, and compression or decompression by entropy encoding of the image signal A memory, a voice coder / decoder for coding or decoding voice, and a compressed image signal and a coded video signal. A hard disk storing a file including a frame including an audio signal to be compressed and header information having compression information designating image compression processing, and transmitting and receiving a compressed image signal and an encoded audio signal in frame units A communication unit, and a keyboard for inputting an instruction of an editing process for the file stored in the hard disk.
In audio editing apparatus, based on an instruction <br/> Ru editing processing against the frame of said file, the header information creation means that forms create the header information, the copy source and the f header information copy
Means for reading from over to the frame, on the basis of the editing process instruction from the keyboard, and the header information changing means for updating the header information of the destination, based on the instruction and the header information of the edit processing, to control the means Te, and a control means for controlling the expansion or recompression for reproducing audio signals which are image signals and coding are compressed.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of a first embodiment of the present invention.
With reference to ISO 10918-1 (Joint P
photographic Expert Group)
This is an image / sound editing device of an image coding system conforming to the standard. The image / audio editing apparatus 1 includes a frame memory 2 in which an image signal is separated and digitized and stored in units of one frame, and a memory as a temporary storage used in a process of compressing the image signal by encoding. 3 and DCT or inverse DCT of the digitized image signal
DCT / Inverse DC that performs transform by DC or its inverse
A T unit 4; a quantizer / inverse quantizer 4 for quantizing or inversely quantizing an image signal which has been DCT-converted; and an encoding for entropy encoding or inversely encoding the quantized image signal. / Decoder 6; audio encoder / decoder 7 for encoding or decoding an audio signal; compressed encoded data, which is a compressed image signal, and encoded audio signal code Hard disk 9 which adds header information to framed data for each frame and stores it as a file
A keyboard 10 for inputting an instruction for an editing process for the file, a header information creating unit 11 for creating header information based on the instruction input from the keyboard 10 ,
A header information reading unit 12 for reading the f header information, based on an instruction input from a keyboard 10, a header information changing unit 13 for changing the header information, based on the input instruction of the header information and a keyboard, the compressed code of the image And a control unit 14 for controlling reproduction and recompression and editing of the encoded data and the encoded data of the audio signal.

Referring to FIG. 5 showing the data format of one frame unit, the first frame includes a code (SOI) indicating the start of the frame, a history information header (Rp) indicating the copy history and the source of the frame, and , A compressed information header (Cp) of the image including information for compressing and encoding the image signal;
The encoded data (Af) of the audio signal, the compressed encoded data (Vf) of the image signal, and a code (E
OI).

The second and subsequent frames contain compressed information.
The header (Cp) and the history information header (Rp) can be omitted.

[0012] Referring also to FIG. 6 showing the configuration of the compressed information header (Cp), and marks Goka information (HCp), and quantization information (QCP), and DCT information (TCP) showing a discrete cosine transform , Block information (BCp) indicating information of block thinning and interpolation.

The details of the above-mentioned compression information header (Cp) are as follows.
7 (a) to 7 (d) based on ISO10918-1
Figure 2 shows the configuration. 8 (a) and 8 (b) for details of the history information header (Rp) , the history information header code (CPF) and the length (L
p), a serial number (Lv) of history information, a copyright identification number (ID), and information indicating a copy history.

With reference to FIGS. 5 to 8, the editing process of the image / audio file in this embodiment is shown in FIG. 9 for explaining the process and FIGS. 10 and 1 showing the flow of operation.
1 will be described.

First, a description will be given with reference to a flowchart 4 showing an operation of editing a file storing image / audio information.

When the operation of the editing apparatus 1 is started by the operator, the control unit 14 waits for an input from the keyboard (step 21 in FIG. 4). The control unit 14 reads an instruction input from the keyboard 10 of the operator and interprets it (step 22). In the case of a transmission request (Step 2
5) The file name of the image / audio information file is input (step 26). Then, the control unit 14 reads the specified file from the hard disk 9 and stores it in the memory 3 (Step 27). Further, the communication unit 8 sends the contents of the memory 3 to the outside (step 28).

Next, when the instruction input from the keyboard 10 of the operator is a reception request (step 29), the control unit 1
4 receives the file name received from the keyboard 10 (step 30). Then, the control unit 10 stores the image / audio data received by the communication unit 8 in the memory 4 (Step 31). Further, the control unit 14 stores the image / audio data in a designated file and stores the data in the hard disk 9 (step 32).

Next, when the instruction input from the keyboard 10 of the operator is an editing request (step 33), the control unit 14 receives the copy destination file name and the copy source file name from the keyboard 10 (step 33). Step 3
4). Then, the control unit 14 reads the copy destination file from the hard disk 9 and stores it in the memory 3 (Step 35). Then, the control unit 14 reads the copy source file from the hard disk 9 and stores it in the memory 3 (step 36). Next, based on the compression information of the image / audio data, the image / audio data of the copy source is converted according to the compression information of the copy destination (step 37). Furthermore,
The converted image / sound data is transferred to the hard disk 9
And stores it in the (Step 38). Then, the control unit 14 returns to a state of waiting for keyboard input.

Regarding the above conversion, various cases will be described.

Referring to FIGS. 9 (a) to 9 (d) for explaining only the change of the compressed information of the image in the header information, reference numerals A1A2 (FIG. 9 (a)) for copying the copy source file
Is inserted at the insertion position B2 (FIG. 9B) of the copy destination file. Since the code A1A2 (FIG. 9A) to be copied is different from the compression information of the copy destination, the code C2C3 (FIG. 9) copied to the copy destination is added with the compression information of the copy source.
(C)). Also, the frames after the insertion position are changed to the copy source compression information according to the inserted compression information of the copied code C2C3.
To return to the copy destination compression information again, the copy destination compression information is inserted into the frame C3C4.

Referring to FIG. 10 showing the flow of the operation for inserting the above-mentioned compression information, the control unit 14
The header information reading unit 12 is started by the instruction of the file name of the copy source and the file name of the copy destination, and the header information of the copy source is read (step 4 in FIG.
1). Next, the copy destination header information is read (step 42). The header information change unit 12 compares the compression information of the copy source and the copy destination, and changes the compression information of the copy source to compression information that is compatible with the compression-encoded data of the copy destination (step 43). Then, the changed compression information is inserted into each frame inserted at the copy destination (step 44).

Next, FIG. 9 for explaining the change of the header information will be described.
1 showing the flow of the operation of the header information changing unit 13
1, the header information changing unit 13 compares the compressed information of the copy source read by the header information reading unit 12 with the compressed information of the copy destination (step 51 in FIG. 11). When the encoded information included in the compressed information is different (Y in step 52), the encoded information of the copy source is inserted as the encoded information of the copy destination (step 53). When the encoded information included in the compressed information does not differ (N in step 52), the encoded information of the copy source is not inserted because it is the same as the encoded information of the copy destination. Further, when the quantization information included in the compression information is different (step 5).
4), insert the copy source quantization information as copy destination quantization information (step 55). When the quantization information included in the compression information does not differ (N in step 54), the copy source quantization information is not inserted because it is the same as the copy destination quantization information. Further, when the DCT information included in the compression information is different (Y in step 56),
The copy source DCT information is inserted as the copy destination DCT information (step 57). Also, D included in the compression information
When the CT information does not differ (N in step 56), the copy source DCT information is the same as the copy destination DCT information, so that it is not inserted. Then, the compression coded data and the coded audio data of the image to be copied from the copy source are inserted into the copy destination (step 60).

If the header information of the original frame at the copy destination is different from the header information of the insertion frame, it is necessary to insert the header information of the copy destination again into the frame next to the insertion frame. Then, by comparing the compressed information of the copy source and the copy destination again, if the coded information are different (Step 6 1 Y), re-insert the coding information of the copy destination (step 62). Moreover, if the encoded information is not different (Step 6 1 N), coded information of the copy destination is not generated the need to insert. Further, when the quantization information is different (Y in step 63), the quantization information of the copy destination is reinserted (step 64). If the quantization information does not differ (N in step 63), there is no need to insert the quantization information of the copy destination. Furthermore, if the DCT information is different (Y in step 65), the DCT information of the copy destination is reinserted (step 66). If the DCT information does not differ (N in step 65), there is no need to insert the quantization information of the copy destination. If the block information is different (Y in step 67), the block information of the copy destination is reinserted (step 68). If the block information does not differ (N in step 67), there is no need to insert block information of the copy destination.

Since the transcription of the header information accompanying the above-mentioned editing processing is automatically performed, the editing processing of the copy source and the copy destination having different header information can be easily performed.

Next, referring to FIG. 2 showing the configuration of a second embodiment according to the second aspect of the present invention, if frames having different compression information are mixed in an image / audio file as a result of editing processing, different A header information recompressor 15 for reproducing and recompressing the frame of the compressed information to make the same compressed information
Is added to the control unit 14 of the first embodiment. This second
12 (a) to 12 (d) for explaining the operation of matching the compression-encoded data of the copy source with the compression-encoded data of the copy destination when the compression information and the compression code of the copy source and the copy destination are different according to the embodiment of FIG. ), The code A1A2 ((a) in FIG. 12) of the copy source to be copied is inserted into the insertion position B2 (FIG. 12 (b)) of the copy destination. According to the first embodiment, the code to be copied is inserted including the original compression information. In this case, in order to match the compression information to the copy destination, it is necessary to reconvert the compression information and the compression-encoded data of the image. Figure 12 illustrating the reconversion (d)
, The compressed and coded data Vf of the image to be copied
1 is decoded and dequantized by its own compressed information, and is once reproduced. Then, it is again quantized and encoded by the compression information of the copy destination, and the compressed encoded data V
It is converted to f1 'and inserted into the copy destination.

Referring to FIG. 13 showing the flow of the operation of the second embodiment, the control unit 14 reads the file from the copy source and the file at the copy destination from the hard disk 9 in response to an instruction input from the keyboard 10, and 3 is temporarily stored. Then, the header information reading unit 12 is activated to read the header information of the copy source (step 71 in FIG. 13). Further, the header information reading section 12 reads the header information of the copy destination (step 72). And
The control unit 14 activates the header information recompression unit 15 and recompresses the header information based on the header information of the copy source and the copy destination (step 73). Next, the control unit 14 activates the header information changing unit 13 and changes the header information for the frame inserted into the copy destination to the header information of the copy destination (step 74). Then, the header information is inserted into the copy destination frame by the header information creating unit 11 (step 75).

Further, referring to FIG. 14 showing a flow of the operation of the header information recompressing unit 15, the header information recompressing unit 15 includes the header of the copy source and the copy destination read by the header information reading unit 11. The compression information included in the information is compared (step 81). When the block information included in the compression information is different (step 8)
2), compression 1 (step 86) and decompression 1
(Step 87) is performed. If the block information is not different (N in step 82) and the DCT information included in the compressed information is different (Y in step 83), the compression 2 (step 88) and the decompression 2 (step 89) described later Perform processing. Next, when the DCT information is not different (N in step 83) and when the quantization information included in the compressed information is different (Y in step 84), compression 3 (step 90) and decompression 3 (step 9) described later are performed.
Perform the processing of 1). If the quantization information does not differ (N in step 84) and the encoding information included in the compression information differs (Y in step 85), compression 4 (step 92) and decompression 4 (step 93), which will be described later, are performed. ). If the encoded information does not differ (N in step 85), the header information recompression process ends, and the process returns to the original.

Next, with reference to FIGS. 15A to 15E showing the flow of the above-described compression processing and decompression processing, decompression 1
The control unit 14 uses the decoder 6 to decode the compressed encoded data of the image stored in the memory 3 based on the encoding information of the copy source (FIG. 15). Step 94). Then, the control unit 14 performs inverse quantization on the decoded data of the image stored in the memory 3 using the inverse quantizer 4 based on the quantization information of the copy source (FIG. 15). Step 95). Further, the control unit 14 applies the copy source D to the dequantized data of the image stored in the memory 3.
Based on the CT information, inverse DCT is performed using the inverse DCT unit 5 (step 96 in FIG. 15). Further, the control unit 1
4 performs block interpolation on the inverse DCT-converted data of the image stored in the memory 3 based on the block information of the copy source (step 97 in FIG. 15).

Next, the processing of decompression 2 will be described. The control unit 14 controls the decoder 6 for the compressed and coded data of the image stored in the memory 3 based on the coding information of the copy source. Used and decrypted (step 98 in FIG. 15). Then, the control unit 14 performs inverse quantization on the decoded data of the image stored in the memory 3 using the inverse quantizer 4 based on the quantization information of the copy source (FIG. 1).
5 step 99).

Further, the control unit 14 uses the inverse DCT unit 5 for the inversely quantized data of the image stored in the memory 3 based on the DCT information of the copy source, and performs inverse DCT conversion. (Step 100 in FIG. 15).

Next, the processing of decompression 3 will be described.
The control unit 14 controls the compressed and encoded data of the image stored in the memory 3 based on the copy source encoding information.
Decoding is performed using the decoder 6 (step 101). Then, the control unit 14 performs inverse quantization on the decoded data of the image stored in the memory 3 using the inverse quantizer 4 based on the quantization information of the copy source (step 102). ).

The processing of the decompression 4 will be described. The control unit 14 uses the decoder 6 for the compressed and encoded data of the image stored in the memory 3 based on the encoding information of the copy source. Is decrypted (step 103).

According to the above-described decompression processes 1 to 4, different transform parts are inverted according to the difference between the block information, DCT information, quantization information and encoding information of the compressed information of the copy source and the copy destination according to the compressed information of the copy source. Convert and decompress.

[0034] Next, the process of re-compression, combined processing result of the expansion in the compression information of the copy destination, is you conversion process.

The processing of compression 1 for decompression 1 is performed by the control unit 1
4 performs thinning processing of blocks on the processing result of decompression 1 stored in the memory 3 using block information of the compression information of the copy destination (step 104). Next, the control unit 14 uses the DCT unit 4 to perform DCT conversion on the processing result of block thinning stored in the memory 3 using the DCT information of the compression information of the copy destination (step 1).
05). Further, next, the control unit 14 performs a quantization transformation on the processing result of the DCT transformation stored in the memory 3 by using the quantization unit 5 by using the quantization information of the compression information of the copy destination (step 106). ). Next, the control unit 14
Performs the encoding conversion on the processing result of the quantization conversion stored in the memory 3 by using the encoder 6 according to the encoding information of the compression information of the copy destination (step 107). By the above-described compression 1 processing, the compression-encoded data of the copy source image is converted into the compression-encoded data of the copy destination image.

Next, in the compression 2 processing for the decompression 2, the control unit 14 controls the DCT unit 4 based on the DCT information of the compression information of the copy destination with respect to the result of the block conversion stored in the memory 3. And DCT transform (step 105). Further, next, the control unit 14 performs a quantization transformation on the processing result of the DCT transformation stored in the memory 3 by using the quantization unit 5 by using the quantization information of the compression information of the copy destination (step 106). ). Next, the control unit 14 uses the encoding information of the compression information of the copy destination for the processing result of the quantization conversion stored in the memory 3 according to the encoding information.
Encoding conversion is performed using the encoder 6 (step 10).
7). By the above-described compression 2 processing, the compression encoded data of the copy source image is converted into the compression encoded data of the copy destination image.

Next, in the processing of compression 3 for decompression 3, the control unit 14 uses the quantization information of the compression information of the copy destination with respect to the result of the DCT conversion stored in the memory 3 to obtain a quantizer. 5 to perform quantization conversion (step 106). Next, the control unit 14 performs coding conversion on the processing result of the quantization conversion stored in the memory 3 using the coding information of the compression information of the copy destination by using the coding unit 6 (step). 107). By the above-described compression 3 processing, the compression-encoded data of the copy source image is converted into the compression-encoded data of the copy destination image.

Next, the processing of the compression 4 for the decompression 4 is performed by the control unit 14 using the encoding information of the compression information of the copy destination with respect to the result of the quantization conversion stored in the memory 3. Using the encoder 6 , encoding conversion is performed (step 107). By the above-described compression 4 processing, the compression-encoded data of the copy source image is converted into the compression-encoded data of the copy destination image.

By the re-compression processing, the compression-encoded data at the copy source is re-compressed into the compression-encoded data at the copy destination. It is possible to eliminate the unnaturalness in which the audio timing is shifted.

Next, referring to FIG. 3 showing the configuration of a third embodiment according to the third aspect of the present invention, a history information adding unit 16 for adding history information indicating an editing history to header information.
And a history information reading unit 17 for reading history information are added to the control unit 14 of the first embodiment.

FIG. 16 for explaining the process of adding history information.
Referring to (a) to (d), the code to be copied (FIG. 1)
6 (a)) is the copy destination insertion position B2
(FIG. 16 (b)) inserted and copied code C2C
3 (FIG. 16 (c)). As the copied history information, the history information of both the copy source and the copy destination is transcribed as the history information RpC. Therefore, since the ID indicating the copyright is not lost in the copy history, the copyright can be checked. Then, since the frame following the copied code is the original copy destination frame, the copy destination history information RpD is newly inserted.

Referring to FIG. 17A showing the flow of the history information reading operation, the control unit 14 receives an input for instructing editing from the keyboard 10, and activates the history information reading unit 17. Then, the history information reading unit 17 reads the history information of the copy source and temporarily stores the history information in the memory 3 (step 111 in FIG. 17). Then, the history information reading unit 17 reads the history information of the copy destination, and
(Step 112). Next, history information is added to the frame to be inserted into the copy destination (step 11).
3). The control unit 14 activates the history information adding unit 16 and based on the history information of the copy destination and the copy source, the memory 3
Create new history information in the work area (step 11)
4).

Next, the control unit 14 controls the header information change unit 1
3 is started, and new history information is inserted into the history information of the header information in the frame inserted at the copy destination in the work area of the memory 3 (step 115). Then, the compression information of the copy source is inserted into the above-mentioned header information (step 116). Further, the control unit 14 inserts the compressed image data and the coded audio data into the above-described frame (step 117). Next, since the next frame following the above-described frame is originally a copy destination frame, the history information of the copy destination is inserted into the frame (step 118). Then, the compression information is inserted into the header information (step 119). By adding the history information described above, the history information can be added to the frame inserted at the copy destination during the editing process, so that the copyright can be tracked and inspected.

[0044]

As described above, according to the present invention, when a file storing compressed and encoded data of an image and audio and coded data in a frame unit is edited in a frame unit, the file is copied between a copy source and a copy destination. Even if the compression information is different, by adding the compression information and the history information to the frame to be inserted into the copy destination, it is possible to recompress the compressed and encoded data of the image based on the compression information of the copy destination and check the copyright. I do.

As a result, it is possible to facilitate the editing work, to prevent the synchronism at the time of reproducing the image and the sound, and to manage the copyright.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a second embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a third embodiment of the present invention.

FIG. 4 is a child diagram (a) showing the operation flow of the embodiment of FIG. 1,
It is a figure including (b), (c), and (d).

FIG. 5 is a diagram illustrating a frame configuration of an image / audio file according to the present invention.

FIG. 6 is a diagram illustrating compression information included in the frame configuration of FIG. 5;

FIGS. 7A to 7D are child diagrams (a) to (d) illustrating coding information, quantization information, DCT information, and block information included in the compression information of FIG. 7;

FIG. 8 is a diagram illustrating a history information header included in the frame configuration of FIG. 4;

FIG. 9 is a diagram illustrating the operation of the first embodiment.

FIG. 10 is a diagram showing a flow of operation of the first embodiment.

FIG. 11 is a diagram showing a flow of an operation of changing header information in FIG. 10;

FIG. 12 is a diagram illustrating the operation of the second embodiment.

FIG. 13 is a diagram showing a flow of the operation of the second embodiment.

FIG. 14 is a diagram showing a flow of an operation of recompressing header information in FIG. 13;

FIGS. 15A to 15E are diagrams illustrating the operation of the decompression and compression processing of FIG.

FIG. 16 is a diagram illustrating the operation of the third embodiment.

17A and 17B are child diagrams (a) and (b) showing a flow of the operation in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image / audio editing apparatus 2 Frame memory 3 Memory 4 DCT / inverse DCT unit 5 Quantization / inverse quantization unit 6 Encoding / inverse encoding unit 7 Audio encoding / decoding unit 8 Communication unit 9 Hard disk 10 Keyboard 11 Header Information creating unit 12 Header information reading unit 13 Header information changing unit 14 Control unit 15 Header information recompressing unit 16 History information adding unit 17 History information reading unit

Claims (3)

(57) [Claims] A frame memory for storing information of an image signal and an audio signal on a frame basis; a discrete cosine transform of the image signal stored in the frame memory;
A discrete cosine transform / inverse discrete cosine transform (hereinafter referred to as DCT / inverse DCT) for performing an inverse discrete cosine transform;
A quantizer / dequantizer for quantizing or dequantizing an image signal which has been DCT-transformed, and encoding / decoding for compressing or decompressing the image signal which has been quantized / transformed by entropy coding. A memory for temporarily storing an image signal that is being subjected to compression or decompression processing by DCT conversion, quantization and entropy coding of the image signal, and an audio encoder / decoder for encoding or decoding audio. A hard disk storing a file including a frame including a compressed image signal, a coded audio signal, and header information having compression information designating compression processing of the image signal; and a compressed image signal. And a communication unit for transmitting and receiving the encoded audio signal in frame units, and the file stored in the hard disk. Copy the image and sound editing apparatus comprising: a keyboard for inputting instructions of the editing process for the Le, a, based on an instruction from the editing process on the frame of said file, the header information creation means that forms create the header information, the header information Means for reading from the destination and copy source frames; header information changing means for updating the header information of the copy destination frame based on an edit processing instruction from the keyboard; and, based on the edit processing instruction and the header information. And the means
Controls and control means for controlling the expansion or recompression for reproducing audio signals which are image signals and coding are compressed comprises, that editing of the image and sound information to the frame Characteristic image and audio editing device. 2. A header information recompressor for expanding an image signal based on image compression information included in header information of a frame of the file and recompressing the image signal based on compression information of a copy destination to be edited. 2. The image / audio editing apparatus according to claim 1, further comprising: 3. The image / audio editing apparatus according to claim 1, further comprising: means for adding history information to said header information; and history information reading means for reading said history and performing copyright inspection. ,