VIVOTEK
138 - User's Manual
text string[60] <blank> 1/4 Enclose caption.
imprinttimestamp <boolean> 0 4/4 Overlay time stamp on video.
enablepreview <boolean> 0 1/4 Usage for UI of image/sensor
settings. Preview settings of video
profile.
s0_codectype mjpeg, h264
H264 1/4 Video codec type.
s1_codectype mpeg4, mjpeg, h264 H264 1/4 Video codec type.
s<0~(m-1)>_res
olution
Reference
capability_videoin_r
esolution
1280x800 1/4 Video resolution in pixels.
s<0~(m-1)>_mp
eg4_intraperiod
250, 500, 1000,
2000, 3000, 4000
1000 4/4 Intra frame period in milliseconds.
s<0~(m-1)>_mp
eg4_ratecontrolm
ode
cbr, vbr Vbr 4/4 cbr, constant bitrate
vbr, fix quality
s<0~(m-1)>_mp
eg4_quant
1~5
99, 100
3 4/4 Quality of video when choosing
vbr in “ratecontrolmode”.
99 is the customized manual input
setting.
1 = worst quality, 5 = best quality.
100 is percentage mode.
s<0~(m-1)>_mp
eg4_qvalue
1~31 7 4/4 Manual video quality level input.
(s<0~(m-1)>_mpeg4_quant =
99)
s<0~(m-1)>_mp
eg4_qpercent
1~100 29 4/4 Manual video quality level input.
(s<0~(m-1)>_mpeg4_quant =
100)
s<0~(m-1)>_mp
eg4_bitrate
1000~16000000 4000000 4/4 Set bit rate in bps when choosing
cbr in “ratecontrolmode”.
s<0~(m-1)>_mp
eg4_maxframe
1~30 30 1/4 Set maximum frame rate in fps
(for MPEG-4).
s<0~(m-1)>_h2
64_intraperiod
250, 500, 1000,
2000, 3000, 4000
1000 4/4 Intra frame period in milliseconds.
s<0~(m-1)>_h2
64_ratecontrolmo
de
cbr, vbr cbr 4/4 cbr, constant bitrate
vbr, fix quality
s<0~(m-1)>_h2
64_quant
1~5
99, 100
3 4/4 Quality of video when choosing
vbr in “ratecontrolmode”.
99 is the customized manual input