HTML5 Video autoplay on iPhone

问题:

I have some kind of a strange problem. I try to create a website with a looped background video. The code looks like this one:

<video src="video/bg.mp4" style="z-index: -1;object-fit: cover;" poster="video/bg.jpg" autobuffer autoplay loop muted></video>

This works perfectly fine on most browsers (IE struggles with this object-fit thing but I don't mind) but on iPhone the video won't autoplay but on iPad it does. I already read the New Policies for iOS and I think I meet the requirements (otherwise iPad won't autoplay). I did some other testing:

• Removing overlaying divs won't fix it
• Removing z-index won't fix it
• Wifi or Cellular doesn't make a difference
• Video filesize doesn't make a difference, too

Am I doing it wrong or does iPhone simply won't autoplay videos and always requires interaction? I only care for iOS 10, I know that the requirements were different on iOS 9

回答1:

Does playsinline attribute help?

Here's what I have:

        <video autoplay loop muted playsinline class="video-background ">
            <source src="videos/intro-video3.mp4" type="video/mp4">
        </video>

See the comment on playsinline here: https://webkit.org/blog/6784/new-video-policies-for-ios/

回答2:

iOs 10+ allow video autoplay inline. but you have to turn off "Low power mode" on your iPhone.

回答3:

Here is the little hack to overcome all struggles you have for video autoplay in a website:

1) Check video is playing or not. 2) Trigger video play on event like body click or touch.

Note: Some browsers don't let videos to autoplay unless user interacts with the device.

So scripts to check whether video is playing is:

Object.defineProperty(HTMLMediaElement.prototype, 'playing', {
get: function () {
    return !!(this.currentTime > 0 && !this.paused && !this.ended && this.readyState > 2);
}});

And then you can simply autoplay the video by attaching event listeners to the body:

$('body').on('click touchstart', function () {
        const videoElement = document.getElementById('home_video');
        if (videoElement.playing) {
            // video is already playing so do nothing
        }
        else {
            // video is not playing
            // so play video now
            videoElement.play();
        }
});

Note: autoplay attribute is very basic which needs to be added to the video tag already other than these scripts.

You can see the working example with code here at this link:

How to autoplay video when device is in low power mode / data saving mode / safari browser issue