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A
Frame Size
Select either VGA (640 x 480) or QVGA (320 x 240) as the frame size.
B
Quality/Size
For specifying the rate control mode and target file size.
When
A
VFS1
B
to
A
VFS7
B
is selected, the quantization table during JPEG
encoding will be maintained and the file size will increase/decrease
according to the input signals. Preset values will be displayed for the target
file size. When recording JPEG data to a recorder with limited capacity, pay
attention when making a selection for this item as the maximum recording
time varies accordingly when the file size increases/decreases.
When
A
AFS
B
is selected, encoding will be performed such that the average
size of multiple JPEG images is the target file size. (When
A
AFS
B
is selected,
input of target file size will be enabled.)
C
Frame Rate
For specifying the number of frames to encode per second. VN-C215VP4U is
limited in its processing capacity and the specified frame rate may not be
realized depending on the settings of
A
[Frame Size] and
B
[Quality/Size]. In
particular, when the specified target file size is large, the upper limit of the
frame rate drops.
An example of settings for which a total frame rate of 30 fps can be realized is
as follows.
Frame Size
: VGA
Picture Quality
: VFS4
Frame Rate
: 30 fps (The maximum bit rate from VN-C215VP4U is
about 9 Mbps.)
D
Fine
Each video frame is made up of 2 fields.
When Fine is set to
A
On
B
, the 2 fields can be used as is.
When Fine is set to
A
Off
B
, the frame is formed using only one of the fields,
hence preventing the image from blurring even when the object is moving.
This feature is enabled when
A
VGA
B
is selected for the
A
[Frame Size] item.
E
Reverse Flag
Flags specified here will be written to the JPEG comment segment.
Switching this item does not flip the image data upside down.
Refer to the [API Guide] on the file formats of JPEG.
