VIVOTEK
User's Manual - 131
32
URL Command Document for VS8401-VVTK
operation; 0(not support),
1(support)
Bit 4 => Support
zoom
operation; 0(not support),
1(support)
Bit 5 => Support
focus
operation; 0(not support),
1(support)
text string[16]
<blank>
1/4
Enclose caption.
imprinttimestamp
<boolean>
0
4/4
Overlay time stamp and
enclose caption on video.
s<0~(m-1)>_codectype mpeg4,
mjpeg,
h264
h264
1/4
Video codec type.
s<0~(m-1)>_resolution
D1,
4CIF,
CIF,
QCIF
4CIF
1/4
Video resolution in pixels.
s<0~(m-1)>_ratiocorrect
<boolean>
0
1/4
Change resolution to fit 4:3
ratio.
For PAL:
D1/4CIF(720/704x576) ->
(768x576)
CIF(352x288)->(384x288)
For NTSC:
D1/4CIF(720/704x480) ->
(640x480)
CIF(352x240)->(320x240)
s<0~(m-1)>_mpeg4_intraperi
od
250, 500, 1000,
2000, 3000,
4000
1000
4/4
Intra frame period in
milliseconds.
s<0~(m-1)>_mpeg4_ratecont
rolmode
cbr, vbr
vbr
4/4
cbr, constant bitrate
vbr, fix quality
s<0~(m-1)>_mpeg4_quant 0~5
99,
100
3
4/4
Quality of video when
choosing vbr in
“ratecontrolmode”.
0, 99,100 is the customized
manual input setting.
