Why is iphone automatically starts playing the video?

Tell me why on iOS in the browser with these settings does not start automatic video?
<div class="slider">
 <video class="slider-video" autoplay loop muted>
 <source type="video/mp4">

sliderVideo.setAttribute('src', "video.mp4");
March 23rd 20 at 19:11
2 answers
March 23rd 20 at 19:13
Here it is:

These 3 attribute for the video tag:
playsinline autoplay muted
Works. - Gus_Ha commented on March 23rd 20 at 19:16
thank you, playsinline helped. - jacques commented on March 23rd 20 at 19:19
March 23rd 20 at 19:15
If the answer to the previous speaker didn't help and the task is to play video inline without turning on the screen, then I recommend here is plugincheck. In his time great helped for older versions of Joseph. It's nice that only works in the absence of native video playback by the browser.

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