JPEG

B Quality/Size For specifying the rate control mode and target file size for JPEG.

When AVFS1B to AVFS7B is selected, the quantization table during JPEG encoding will be maintained and the file size will increase/decrease according to the input signals. Stipulated values will be displayed in the Size field. When recording JPEG data to a recorder with a limited storage capacity, note that the maximum recording time may vary as the file size fluctuates under this setting.

When AAFSB is selected, encoding is performed such that the target file size is the average size of multiple JPEG images. You can enter the target size in the Size field.

[Quality field set values: VFS1 - VFS7, AFS]

[Size field setting range for VGA: 10kB - 100kB (only when AFS is specified)]

[Size field setting range for QVGA: 3kB - 33kB (only when AFS is specified)]

MPEG4

C Bitrate

For setting the MPEG4 encoding bit rate.

 

[Setting range: 64 kbps - 8000 kbps]

 

 

D Bitrate Control

For selecting whether to set the MPEG4 rate control mode to CBR (Constant

 

Bit Rate) or VBR (Variable Bit Rate).

 

CBR

: Encoding is performed at a fixed bit rate regardless of the condition

 

 

of the input video signals. Enables easy forecast of the bit rate.

 

VBR

: Changes the bit rate according to the condition of the input video

 

 

signals. Picture quality is stable, but forecast of the bit rate is

 

 

difficult.

 

 

E Frame Rate

For setting the MPEG4 frame rate.

 

[Setting range: 1 fps - 30 fps]

 

 

F I Frame Interval

For setting the I-frame interval. MPEG4 starts encoding from the I-frame.

 

Shortening the interval stabilizes the picture quality even when there are

 

rapid changes in the video image. However, the picture quality for images

 

with little change will deteriorate. In addition, when multicast packet loss

 

occurs, the time interval required to restore the image is shorter.

 

[Set values: 30, 60, 90, 120, 150]

 

 

G Priority

For selecting whether to assign priority to the frame rate or picture quality

 

during MPEG4 encoding.

 

FPS

: Assigns priority to frame rate. Select this setting to enable

 

 

smooth monitoring of motion images.

 

Quality

: Assigns priority to picture quality.

 

 

 

45