PreferenceSpecifiers Type PSToggleSwitchSpecifier Title Automatically start Key start_video_preference DefaultValue Type PSToggleSwitchSpecifier Title Automatically accept Key accept_video_preference DefaultValue Type PSToggleSwitchSpecifier Title Show self view Key self_video_preference Type PSToggleSwitchSpecifier Title Show preview Key preview_preference DefaultValue 1 Key video_preferred_size_preference Title Preferred video size Titles HD (960x720) VGA (640x480) QVGA (320x240) Type PSMultiValueSpecifier Values 0 1 2 Title Codecs Type PSGroupSpecifier DefaultValue Key mp4v-es_preference Title mpeg4 Type PSToggleSwitchSpecifier DefaultValue Key h264_preference Title h264 Type PSToggleSwitchSpecifier DefaultValue Key vp8_preference Title VP8 Type PSToggleSwitchSpecifier