Video player plugin with no exit button

Good Day,

I am triggering a video on selecting a sidemenu option :

<group name="level_11" >
<group name="object_1" 
value="My Video" link="video player_open(videos/myvideo.mp4 | videos/myvideo.webm); ">
</group>

Now the problem is -

1. The video is starting just fine but I am not able to incorporate a Close icon button.
2. The video is in .mp4 format and has good quality, but the converted .webm format has come out very pixelated and hazy. When I am running it in chrome or firefox on desktop it has abominable quality. Could someone advise how this can be addressed.

Can someone assist,

Red