Use virtual backgrounds

if let vbSetting = ZoomSDK.shared().getSettingService()?.getVirtualBGSetting() {
    /*
     Normal virtual background: virtual background used with a green screen.
     Smart virtual Background: virtual backgrounds without the need for a green screen, but it has certain system performance requirements based on https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0060007
     */

    if vbSetting.isSupportVirtualBG() {
        // Normal virtual background image is supported
    }

    if vbSetting.isDeviceSupportSmartVirtualBG() {
        // Smart virtual background image is supported
    }

    if vbSetting.isDeviceSupportGreenVirtualBackgroundVideo() {
        // Normal virtual background video is supported
    }

    if vbSetting.isDeviceSupportSmartVirtualBackgroundVideo() {
        // Smart virtual background video is supported
    }
}

ZoomSDKVirtualBackgroundSetting *vbSetting = [[[ZoomSDK sharedSDK] getSettingService] getVirtualBGSetting];
if (vbSetting) {
    /*
     Normal virtual background: virtual background used with a green screen.
     Smart virtual Background: virtual backgrounds without the need for a green screen, but it has certain system performance requirements based on https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0060007
     */

    if (vbSetting.isSupportVirtualBG) {
        // Normal virtual background image is supported
    }

    if (vbSetting.isDeviceSupportSmartVirtualBG) {
        // Smart virtual background image is supported
    }

    if (vbSetting.isDeviceSupportGreenVirtualBackgroundVideo) {
        // Normal virtual background video is supported
    }

    if (vbSetting.isDeviceSupportSmartVirtualBackgroundVideo) {
        // Smart virtual background video is supported
    }
}

// To list available virtual background
if let listOfVirtualBG = vbSetting.getBGItemList() as? [ZoomSDKVirtualBGImageInfo] {
    // This list will contained a NONE, BLUR or other image/video (self added).
    for vb in listOfVirtualBG {
        vb.isAllowDelete()
        vb.getImageFilePath()
        vb.getImageName()
        vb.isSelected()
        vb.isVideo()
    }
}

// To add virtual background to list, first check for permission.
if vbSetting.isAllowAddNewVBItem() {
    let error = vbSetting.addBGImage(<#T##filePath: String##String#>)
}

/*
 To remove a specific virtual background from the list, first check for permission.
 Note: You cannot remove NONE and BLUR type.
 */
if vbSetting.isAllowRemoveVBItem() {
    let error = vbSetting.removeBGItem(<#T##virtualBGImageInfo: ZoomSDKVirtualBGImageInfo##ZoomSDKVirtualBGImageInfo#>)
}

// To set a specific virtual background
vbSetting.useBGItem(<#T##item: ZoomSDKVirtualBGImageInfo##ZoomSDKVirtualBGImageInfo#>)

// To list available virtual background
NSArray<ZoomSDKVirtualBGImageInfo *> *listOfVirtualBG =
        [vbSetting getBGItemList];
if (listOfVirtualBG) {
    // This list contains NONE, BLUR, and user-added image/video backgrounds
    for (ZoomSDKVirtualBGImageInfo *vb in listOfVirtualBG) {
        [vb isAllowDelete];
        [vb getImageFilePath];
        [vb getImageName];
        [vb isSelected];
        [vb isVideo];
    }
}

// To add virtual background to list, first check for permission.
if ([vbSetting isAllowAddNewVBItem]) {
    ZoomSDKError error = [vbSetting addBGImage:filePath];
}

/*
 To remove a specific virtual background from the list, first check for permission.
 Note: You cannot remove NONE and BLUR type.
 */
if ([vbSetting isAllowRemoveVBItem]) {
    ZoomSDKError error = [vbSetting removeBGItem:ZoomSDKVirtualBGImageInfo];
}

// To set a specific virtual background
[vbSetting useBGItem:ZoomSDKVirtualBGImageInfo];

let yourPreviewView:NSView = NSView() // Get your NSView
let previewVideoItem = ZoomSDKPreViewVideoElement(frame: yourPreviewView.frame)
var videoElement: ZoomSDKVideoElement? = previewVideoItem
let videoContainer = ZoomSDK.shared().getMeetingService()?.getVideoContainer()
videoContainer?.createVideoElement(&videoElement)
yourPreviewView.addSubview(previewVideoItem.getVideoView())
previewVideoItem.startPreview(true)

NSView *yourPreviewView = [NSView alloc]; // Get your NSView
ZoomSDKPreViewVideoElement *previewVideoItem = [[ZoomSDKPreViewVideoElement alloc] initWithFrame:yourPreviewView.frame];
ZoomSDKVideoContainer* videoContainer = [[[ZoomSDK sharedSDK] getMeetingService] getVideoContainer];
[videoContainer createVideoElement:&previewVideoItem];
[yourPreviewView addSubview:[previewVideoItem getVideoView]];
[previewVideoItem startPreview:YES];

vbSetting.isUsingGreenScreenOn()
vbSetting.setUsingGreenScreen(true) // or false

vbSetting.isUsingGreenScreenOn;
[vbSetting setUsingGreenScreen:YES]; // Or NO