Example of response encode(1).cbr_mode&202 Accepted(encode(1).status=save)

Interpretation Change rate control of JPEG. Rate control can be set to vfs or afs. In vfs (VariableFileSize), quantization table is fixed. In afs (AverageFileSize), average file size of multiple JPEGs is controlled to be constant. The change is saved by the API, encode(1).status=save. If the change is not saved, the setting is restored by reboot. Allowed users admin, operator

Getting JPEG File Size Setting from VN-V685/686/686B

Format /api/param?encode(1).quality

Example of response encode(1).quality=40k&200 OK

Interpretation Acquire the file size setting of JPEG. If the response is 40k for example, the setting is 40KB. Allowed users admin, operator, user

Setting JPEG File Size Setting for VN-V685/686/686B

Format /api/param?encode(1).quality=Data

Example /api/param?encode(1).quality=30k

Example of response encode(1).quality&202 Accepted(encode(1).status=save)

Interpretation Change the file size setting of JPEG. The unit of set values is in KB. VN-V685/686/686B will perform rate control with this file size as the target.

When frame size is VGA, setting between the range of 10k to 100k is possible. When frame size is QVGA, setting between the range of 3k to 33k is possible.

When VFS (VariableFileSize) is specified for rate control at the WEB setting page, 7 levels will be available for selection. Each of these choices corresponds to the file sizes as follows.

Level

File Size Setting for VGA

File Size Setting for QVGA

1

80k

27k

2

60k

20k

3

40k

13k

4

30k

10k

5

25k

8k

 

 

 

6

20k

7k

7

15k

5k

 

 

 

When rate control is set to vfs and a file size that is not stated above is specified, the closest choice will be displayed on the WEB setting page. The change is saved by the API, encode(1).status=save. If the change is not saved, the setting is restored by reboot.

Allowed users admin, operator

Getting MPEG-4 Frame Size from VN-V685/686/686B

Format /api/param?encode(2).framesize

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JVC 686BU, 686U Getting Jpeg File Size Setting from VN-V685/686/686B, Setting Jpeg File Size Setting for VN-V685/686/686B