Changing the video background of this elementor slider

I'm working on this Wordpress website and trying to change the video background of the slider on the homepage. I see it in the code, I see it in the site editor, and it seems to be part of a revolution slider, yet in this slider's properties, I cannot find any instruction relating to it.

Has anyone worked with this situation before? Did I miss something obvious? or did I just research the wrong question?

Here is the JSON definition of the slider in question:

{     "addOns": [],     "carousel": {         "borderRadius": 0,         "borderRadiusUnit": "px",         "ease": "power3.inOut",         "fadeOut": true,         "horizontal": "center",         "infinity": false,         "justify": false,         "justifyMaxWidth": false,         "maxItems": 3,         "maxOpacity": 100,         "maxRotation": 0,         "offsetScale": false,         "paddingBottom": 0,         "paddingTop": 0,         "rotation": false,         "scale": false,         "scaleDown": 50,         "showAllLayers": "false",         "snap": true,         "space": 0,         "speed": 800,         "stretch": false,         "varyFade": false,         "varyRotate": false,         "varyScale": false,         "vertical": "center"     },     "class": "",     "codes": {         "css": "",         "javascript": ""     },     "def": {         "autoResponsive": true,         "background": {             "fit": "cover",             "fitX": 100,             "fitY": 100,             "imageSourceType": "full",             "position": "center center",             "positionX": 0,             "positionY": 0,             "repeat": "no-repeat"         },         "delay": 9000,         "intelligentInherit": true,         "panZoom": {             "blurEnd": 0,             "blurStart": 0,             "duration": 10000,             "ease": "none",             "fitEnd": 100,             "fitStart": 100,             "rotateEnd": 0,             "rotateStart": 0,             "set": false,             "xEnd": 0,             "xStart": 0,             "yEnd": 0,             "yStart": 0         },         "responsiveChilds": true,         "responsiveOffset": true,         "transition": "fade",         "transitionDuration": 300     },     "general": {         "autoPlayVideoOnMobile": true,         "disableFocusListener": false,         "disableOnMobile": false,         "disablePanZoomMobile": false,         "firstSlide": {             "alternativeFirstSlide": 1,             "alternativeFirstSlideSet": false,             "duration": 300,             "set": false,             "slotAmount": 7,             "type": "fade"         },         "layerSelection": false,         "lazyLoad": "none",         "nextSlideOnFocus": false,         "progressbar": {             "color": "rgba(255,255,255,0.5)",             "height": 5,             "position": "bottom",             "set": false         },         "slideshow": {             "initDelay": 0,             "loopSingle": false,             "presetSliderHeight": false,             "shuffle": false,             "slideShow": true,             "stopAfterLoops": 0,             "stopAtSlide": 1,             "stopOnHover": false,             "stopSlider": false,             "viewPort": false,             "viewPortArea": {                 "d": {                     "e": false,                     "u": "",                     "v": "200px"                 },                 "m": {                     "e": false,                     "u": "",                     "v": "200px"                 },                 "n": {                     "e": false,                     "u": "",                     "v": "200px"                 },                 "t": {                     "e": false,                     "u": "",                     "v": "200px"                 }             },             "viewPortStart": "wait",             "waitForInit": false         },         "useWPML": false     },     "googleFont": [],     "hero": {         "activeSlide": -1     },     "id": "",     "layout": {         "bg": {             "color": "transparent",             "dottedOverlay": "none",             "fit": "cover",             "image": "",             "imageSourceType": "full",             "padding": 0,             "position": "center center",             "repeat": "no-repeat",             "shadow": 0,             "useImage": false         },         "position": {             "addClear": false,             "align": "center",             "fixedOnTop": false,             "marginBottom": 0,             "marginLeft": 0,             "marginRight": 0,             "marginTop": 0         },         "spinner": {             "color": "#ffffff",             "type": "0"         }     },     "layouttype": "fullwidth",     "modal": {         "bodyclass": "",         "cover": true,         "coverColor": "rgba(0,0,0,0.5)",         "horizontal": "center",         "vertical": "middle"     },     "modalshortcode": "[rev_slider usage="modal" alias="slider-1"][/rev_slider]",     "nav": {         "arrows": {             "alwaysOn": true,             "animDelay": "1000ms",             "animSpeed": "1000ms",             "hideDelay": 200,             "hideDelayMobile": 1200,             "hideOver": false,             "hideOverLimit": 0,             "hideUnder": false,             "hideUnderLimit": 778,             "left": {                 "align": "slider",                 "anim": "fade",                 "horizontal": "left",                 "offsetX": 30,                 "offsetY": 0,                 "vertical": "center"             },             "preset": "default",             "presets": [],             "right": {                 "align": "slider",                 "anim": "fade",                 "horizontal": "right",                 "offsetX": 30,                 "offsetY": 0,                 "vertical": "center"             },             "rtl": false,             "set": false,             "style": "1000"         },         "bullets": {             "align": "slider",             "alwaysOn": true,             "anim": "fade",             "animDelay": "1000ms",             "animSpeed": "1000ms",             "direction": "horizontal",             "hideDelay": 200,             "hideDelayMobile": 1200,             "hideOver": false,             "hideOverLimit": 0,             "hideUnder": false,             "hideUnderLimit": 778,             "horizontal": "center",             "offsetX": 0,             "offsetY": 20,             "preset": "default",             "presets": [],             "rtl": false,             "set": false,             "space": 5,             "style": "3000",             "vertical": "bottom"         },         "keyboard": {             "direction": "horizontal",             "set": false         },         "mouse": {             "reverse": "default",             "set": "off"         },         "preview": {             "height": 100,             "width": 50         },         "swipe": {             "blockDragVertical": false,             "direction": "horizontal",             "minTouch": 1,             "set": false,             "setDesktopCarousel": true,             "setMobileCarousel": true,             "setOnDesktop": false,             "velocity": 75         },         "tabs": {             "align": "slider",             "alwaysOn": true,             "amount": 5,             "anim": "fade",             "animDelay": "1000ms",             "animSpeed": "1000ms",             "direction": "horizontal",             "height": 50,             "hideDelay": 200,             "hideDelayMobile": 1200,             "hideOver": false,             "hideOverLimit": 0,             "hideUnder": false,             "hideUnderLimit": 778,             "horizontal": "center",             "innerOuter": "inner",             "offsetX": 0,             "offsetY": 20,             "padding": 5,             "preset": "default",             "presets": [],             "rtl": false,             "set": false,             "space": 5,             "spanWrapper": false,             "style": "4000",             "vertical": "bottom",             "width": 100,             "widthMin": 100,             "wrapperColor": "transparent"         },         "thumbs": {             "align": "slider",             "alwaysOn": true,             "amount": 5,             "anim": "fade",             "animDelay": "1000ms",             "animSpeed": "1000ms",             "direction": "horizontal",             "height": 50,             "hideDelay": 200,             "hideDelayMobile": 1200,             "hideOver": false,             "hideOverLimit": 0,             "hideUnder": false,             "hideUnderLimit": 778,             "horizontal": "center",             "innerOuter": "inner",             "offsetX": 0,             "offsetY": 20,             "padding": 5,             "preset": "default",             "presets": [],             "rtl": false,             "set": false,             "space": 5,             "spanWrapper": false,             "style": "2000",             "vertical": "bottom",             "width": 100,             "widthMin": 100,             "wrapperColor": "transparent"         }     },     "parallax": {         "ddd": {             "BGFreeze": false,             "layerOverflow": false,             "overflow": false,             "shadow": false,             "zCorrection": 65         },         "disableOnMobile": false,         "levels": [             5,             10,             15,             20,             25,             30,             35,             40,             45,             46,             47,             48,             49,             50,             51,             30         ],         "mouse": {             "bgSpeed": 0,             "layersSpeed": 0,             "origo": "slidercenter",             "speed": 0,             "type": "scroll"         },         "set": false,         "setDDD": false     },     "scrolleffects": {         "bg": false,         "direction": "both",         "disableOnMobile": false,         "layers": false,         "maxBlur": 10,         "multiplicator": "1.3",         "multiplicatorLayers": "1.3",         "parallaxLayers": false,         "set": false,         "setBlur": false,         "setFade": false,         "setGrayScale": false,         "staticLayers": false,         "staticParallaxLayers": false,         "tilt": 30     },     "scrolltimeline": {         "ease": "none",         "fixed": false,         "fixedEnd": 4000,         "fixedStart": 2000,         "layers": false,         "set": false,         "speed": 500     },     "shortcode": "[rev_slider alias="slider-1"][/rev_slider]",     "size": {         "custom": {             "d": true,             "m": true,             "n": true,             "t": true         },         "disableForceFullWidth": false,         "editorCache": {             "d": 500,             "m": 270,             "n": 600,             "t": 430         },         "forceOverflow": false,         "fullScreenOffset": "",         "fullScreenOffsetContainer": "",         "gridEQModule": false,         "height": {             "d": "500px",             "m": "270px",             "n": "600px",             "t": "430px"         },         "keepBPHeight": false,         "maxHeight": 0,         "maxWidth": 0,         "minHeight": "",         "minHeightFullScreen": "",         "overflow": false,         "overflowHidden": false,         "respectAspectRatio": false,         "useFullScreenHeight": true,         "width": {             "d": 1240,             "m": 480,             "n": 1024,             "t": 778         }     },     "skins": {         "cid": 2,         "colors": [             {                 "alias": "Highlight",                 "ref": [],                 "v": "#ff0000"             },             {                 "alias": "Headline Text",                 "ref": [],                 "v": "#ffffff"             },             {                 "alias": "Content Text",                 "ref": [],                 "v": "#00ffff"             }         ],         "colorsAtStart": false     },     "snap": {         "adjust": "none",         "gap": 20,         "helpLines": false,         "snap": false     },     "source": {         "facebook": {             "album": "",             "appId": "",             "appSecret": "",             "count": "",             "pageURL": "",             "transient": 1200,             "typeSource": "album"         },         "flickr": {             "apiKey": "",             "count": "",             "galleryURL": "",             "groupURL": "",             "photoSet": "",             "transient": 1200,             "type": "publicphotos",             "userURL": ""         },         "gallery": [],         "instagram": {             "count": "",             "hashTag": "",             "transient": 1200,             "type": "user",             "userId": ""         },         "post": {             "category": "",             "excerptLimit": 55,             "fetchType": "cat_tag",             "list": "",             "maxPosts": 30,             "sortBy": "ID",             "sortDirection": "DESC",             "subType": "post",             "types": "post"         },         "twitter": {             "accessSecret": "",             "accessToken": "",             "consumerKey": "",             "consumerSecret": "",             "count": "",             "excludeReplies": false,             "imageOnly": false,             "includeRetweets": false,             "transient": 1200,             "userId": ""         },         "vimeo": {             "albumId": "",             "channelName": "",             "count": "",             "groupName": "",             "transient": 1200,             "typeSource": "user",             "userName": ""         },         "woo": {             "category": "",             "excerptLimit": 55,             "featuredOnly": false,             "inStockOnly": false,             "maxProducts": 30,             "regPriceFrom": "",             "regPriceTo": "",             "salePriceFrom": "",             "salePriceTo": "",             "sortBy": "ID",             "sortDirection": "DESC",             "types": "product"         },         "youtube": {             "api": "",             "channelId": "",             "count": "",             "playList": "",             "transient": 1200,             "typeSource": "channel"         }     },     "sourcetype": "gallery",     "troubleshooting": {         "alternateImageType": "off",         "alternateURL": "",         "ignoreHeightChanges": false,         "ignoreHeightChangesUnderLimit": 0,         "jsInBody": false,         "jsNoConflict": false,         "outPutFilter": "none",         "simplify_ie8_ios4": false     },     "type": "standard",     "version": "6.2.2",     "visibility": {         "hideAllLayersUnderLimit": 0,         "hideSelectedLayersUnderLimit": 0,         "hideSliderUnderLimit": 0     },     "wrapperclass": "" }