Cordova iOS 6+ Autoplay Video in External Screen

问题

I'm using cordova-plugin-wkwebview-external-screen to playback inline media on a secondary screen (via AirPlay or HDMI adapter). The media loads fine but does not autoplay videos in the external webview. (autoplay works fine in primary webview)

In my config.xml I have the following:

<preference name="AllowInlineMediaPlayback" value="true" /> 
<preference name="MediaTypesRequiringUserActionForPlayback" value="none" />

I have attempted adding the following configuration in WKWebViewExternalScreen.m (lines 20-21):

- (WKWebView*)getWebView {
    if (!self.externalWebView) {
        UIScreen* externalScreen = [[UIScreen screens] objectAtIndex: 1];
        CGRect screenBounds = externalScreen.bounds;

        self.externalWebView = [[WKWebView alloc] initWithFrame: screenBounds configuration: [[WKWebViewConfiguration alloc] init]];

        // I ADDED THESE TWO LINES
        self.externalWebView.configuration.allowsInlineMediaPlayback = YES;// Updated 'true' to 'YES'
        self.externalWebView.configuration.mediaTypesRequiringUserActionForPlayback = WKAudiovisualMediaTypeNone;

        self.externalWindow = [[UIWindow alloc] initWithFrame: screenBounds];

        self.externalWindow.screen = externalScreen;
        self.externalWindow.clipsToBounds = YES;
        [self.externalWindow addSubview:self.externalWebView];
        [self.externalWindow makeKeyAndVisible];
        self.externalWindow.hidden = NO;
    }
    return self.externalWebView;
}

I've tried programmatically triggering an HTML5 video.play() after the second view is loaded. No dice.

How can I autoplay HTML5 videos in this second view? (I'm using Cordova CLI 10.0.0 & Cordova iOS 6.1.1)

UPDATE: I've created a sample Cordova iOS Xcode project here. In Simulator, Menu > I/O > External Displays > 1280 x 720 (720p) will open secondary.html the secondary WebView. BOTH index.html and secondary.html contain the VIDEO tag: <video src="img/fireandiceocean.mp4" preload autoplay playsinline loop />. In the primary view, the video plays in a loop automatically as expected, but in the Extended Display, the video does not autoplay.

来源：https://stackoverflow.com/questions/65115592/cordova-ios-6-autoplay-video-in-external-screen