Basic Settings 2 - JVC VN-X35U Instructions Manual

VN-V25U_26U_EN.book Page 40 Wednesday, September 3, 2008 8:03 PM
Setting Using Internet Explorer
Setting (continued)
Basic Settings 2 (continued)
DJPEG
Frame Size
EMPEG4
Bitrate
Bitrate Control
FPS
I Frame Interval
Priority
40
For specifying the JPEG picture quality (rate control mode) and size
(target file size). When AVFSB 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.
Reference value will be displayed in the Size field.
JPEG data to a recorder with a limited storage capacity, the maximum
recording time may vary as the file size fluctuates under this setting.
When AAFSBis 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.
[Picture quality values : VFS1 to VFS7, AFS]
Memo:
● The picture size can be specified only when the picture quality value is set to AFS.
[Size setting range in Quad VGA mode:： 40 kB to 200 kB ]
[Size setting range in VGA mode:： 10 kB to 100 kB ]
[Size setting range in QVGA mode:3 kB to 33 kB ]
For setting the MPEG4 encoding bit rate.
[Set values : 64 kbps to 8000 kbps]
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.
For setting the MPEG4 frame rate.
[Set values : 1 fps, 7.5 fps, 10 fps, 15 fps]
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 : 15, 30,45, 60,75]
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.
When recording