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  | VIVOTEK | |
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  | <product | 1600x904, | 
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  | dependent> | 1920x1080, | 
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  | videoin_c0_mode1_maxfps_mpeg4  | <Integer>  | 60,60,60,60,60,60,50  | 0/7  | Maximum fps that the  | 
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  | videoin_c0_mode1_maxfps_mjpeg  | <Integer>  | 60,60,60,60,60,60,60  | 0/7  | Maximum fps that the  | 
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  | videoin_c0_mode1_maxfps_h264  | <Integer>  | 60,60,60,60,60,60,60  | 0/7  | Maximum fps that the  | 
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  | videoin_flexiblebitrate  | <boolean>  | 1  | 0/7  | Indicate whether to support  | 
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  | flexible bit rate control.  | 
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  | videoout_codec  | <a list of the  | ntsc  | 0/7  | Available codec list.  | 
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  | codec types  | 
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  | separated by  | 
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  | commas)  | 
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  | dependent>  | 
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  | audio_aec  | <boolean>  | 0  | 0/7  | Indicate whether to support  | 
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  | acoustic echo cancellation.  | 
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  | audio_extmic  | <boolean>  | 1  | 0/7  | Indicate whether to support  | 
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  | external microphone input.  | 
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  | audio_linein  | <boolean>  | 1  | 0/7  | Indicate whether to support  | 
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  | external line input.  | 
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  | (It will be replaced by  | 
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  | audio_mic and  | 
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  | audio_extmic.)  | 
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  | audio_lineout  | <boolean>  | 1  | 0/7  | Indicate whether to support  | 
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  | line output.  | 
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  | audio_headphoneout  | <boolean>  | 0  | 0/7  | Indicate whether to support  | 
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  | headphone output.  | 
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  | audioin_codec  | aac4, gamr,  | aac4, gamr, g711  | 0/7  | Available codec list for audio  | 
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  | g711  | 
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  | audioout_codec  | g711  | g711  | 0/7  | Available codec list for SIP.  | 
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  | dependent>  | 
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  | camctrl_httptunnel  | <boolean>  | 0  | 0/7  | Indicate whether to support  | 
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  | httptunnel.  | 
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User's Manual - 175