iOS video going full screen on click to play. Playsinline parameter not working.

I have been having an issue for some time and I can't seem to figure out what is going on.I am using Angular 1.5 and the npm package angular-youtube-embed.

Video Html:

```

My player parameters are:
```
$scope.playerVars = {
autoplay:$scope.stream.autoPlay,
playlist:$scope.stream.videoUrl,
controls:1,
fs:0,
modestbranding:1,
rel:0,
enablejsapi:1,
loop:1,
showinfo:0,
playsinline:1
};
```

The playsinline:1 parameter should disable the force fullscreen when a mobile iOS user plays the YouTube video. But this is not working. I have tried it on iPhone 5s to 8 (I believe). Anyone have any ideas? Thank you in advance.

Reproduce the iOS playback behavior with the shown directive and playerVars, focusing on playsinline and the angular-youtube-embed integration. Compare the observed result with the expected inline playback and determine whether the issue belongs in the directive or requires an upstream YouTube API change.

Written by the indexing model from the issue text.