Vivotek VS8102 manual Contrast Adjust contrast of image according to mode settings

			VIVOTEK
4_quantlevel			encoder.
			1 = best quality, 31 = worst quality.
s<0~(m-1)>_mpeg	1000~4000000	4/4	Set bit rate in bps when choosing cbr in
4_bitrate			“ratecontrolmode”.
s<0~(m-1)>_mpeg	1~30	1/4	Set maximum frame rate in fps (for MPEG-4).
4_maxframe
s<0~(m-1)>_mpeg	1~31	4/4	Manual video quality level input - choose customize
4_qvalue			input “mpeg4_quant = 0” (for MPEG-4).
s<0~(m-1)>_mjpe	1 ~ 5	4/4	Quality of JPEG video. 0 is the customized manual
g_quant			input setting. 1 = worst quality, 5 = best quality.
s<0~(m-1)>_mjpe	2~97	7/4	The specific quality parameter of the JPEG encoder.
g_quantlevel			2 = best quality, 97 = worst quality.
s<0~(m-1)>_mjpe	1~30	1/4	Set maximum frame rate in fps (for JPEG).
g_maxframe
s<0~(m-1)>_mjpe	2~97	4/4	Manual video quality level input - choose customize
g_qvalue			input “mjpeg_quant = 0” (for MJPEG).
s<0~(m-1)>_forcei	1	7/6	Force I frame.
enablewdr	<boolean>	6/6	Enable/disable WDR

Group: audioin_c<0~(n-1)>for n channel products (capability.audioin>0)

NAME		VALUE		SECURITY		DESCRIPTION
				(get/set)
source		linein	4/4			Linein => use line input.
mute	0, 1		4/4			Enable audio mute.
gain	0~37		4/4			Gain of input.
boostmic	0~37		4/4		Gain of input.
s<0~(m-1)>_codectype		aac4, gamr	4/4			Set audio codec type for input.
s<0~(m-1)>_aac4_bitrate	16000, 32000, 48000, 64000,		4/4			Set AAC4 bitrate in bps.
	96000, 128000
s<0~(m-1)>_gamr_bitrate	4750, 5150, 5900, 6700,		4/4			Set AMR bitrate in bps.
	7400, 7950, 10200, 12200

Group: image_c<0~(n-1)>for n channel products

NAME		VALUE		SECURITY		DESCRIPTION
				(get/set)
brightness		<product dependent>	4/4		Adjust brightness of image according to mode settings.
saturation	-5 ~ 5		4/4			Adjust saturation of image according to mode settings.
contrast	-5 ~ 5		4/4			Adjust contrast of image according to mode settings.
sharpness		<product dependent>	4/4			Adjust sharpness of image according to mode settings.

User's Manual - 111