This is the "Advanced Slider" element. A custom slider with premade caption settings.
[wvc_advanced_slider slideshow_speed="6000" ][wvc_advanced_slide add_overlay="yes" title_font_weight="700" title_font_size="90" b1_title="PURCHASE" b1_hover_effect="background" b2_title="MORE INFO" b2_color="white" b2_shape="boxed-outline" b2_hover_effect="background" b1_font_weight="700" b2_font_weight="700" add_button_1="true" add_button_2="true" background_img="6837" title="Create Amazing Sliders" caption="Set up advanced sliders in a few clicks" b1_link="url:http%3A%2F%2Fwlfthm.es%2FPBkYQY|||" b2_link="url:http%3A%2F%2Fwlfthm.es%2FPBkYQY|||" ][wvc_advanced_slide background_type="video" add_overlay="yes" title_font_weight="700" title_font_size="90" b1_title="PURCHASE" b1_hover_effect="background" b2_title="MORE INFO" b2_color="white" b2_shape="boxed-outline" b2_hover_effect="background" b1_font_weight="700" b2_font_weight="700" add_button_1="true" add_button_2="true" title="Create Amazing Sliders" caption="Set up advanced sliders in a few clicks" b1_link="url:http%3A%2F%2Fwlfthm.es%2FPBkYQY|||" b2_link="url:http%3A%2F%2Fwlfthm.es%2FPBkYQY|||" video_bg_url="https://preview.wolfthemes.live/app/uploads/sites/26/2019/06/Concert-Audience-Video-stock-Footage.mp4" video_bg_img="6915" ][wvc_advanced_slide add_overlay="yes" title_font_weight="700" title_font_size="90" b1_title="PURCHASE" b1_hover_effect="background" b2_title="MORE INFO" b2_color="white" b2_shape="boxed-outline" b2_hover_effect="background" b1_font_weight="700" b2_font_weight="700" add_button_1="true" add_button_2="true" background_img="6854" title="Create Amazing Sliders" caption="Set up advanced sliders in a few clicks" b1_link="url:http%3A%2F%2Fwlfthm.es%2FPBkYQY|||" b2_link="url:http%3A%2F%2Fwlfthm.es%2FPBkYQY|||" ][/wvc_advanced_slider]