YES I FIXED Try that you like on my site vedio embed full screen fixed
https://chafcha.com/player/m/78/numb/75.html
I found the solution on my own
for movie player embed
go to src -- WebBundle --Resources -- views -- Player -- file : movie.html.twig and fetch
{% elseif source.type == "embed" %}
<div class="flix_app_player" >
<iframe src="{{source.url}}" ></iframe>
</div>
set
{% elseif source.type == "embed" %}
<div class="flix_app_player" >
<iframe src="{{source.url}}" allowfullscreen
allowtransparency
allow="autoplay" ></iframe>
</div>
for tv show player embed
go to src -- WebBundle --Resources -- views -- Player -- file : episode.html.twig and fetch
% elseif source.type == "embed" %}
<div class="flix_app_player" >
<iframe src="{{source.url}}" ></iframe>
set
% elseif source.type == "embed" %}
<div class="flix_app_player" >
<iframe src="{{source.url}}" allowfullscreen
allowtransparency
allow="autoplay"></iframe>
after delete folder prod from var -- cache