Thanks, now it works !!
I added the css you indicated, but I added a few more things, because the video was not focused and did not fit the screen. I leave some lines that I have included in case you help with any other case.
.fullwrap-video .lazy-hidden {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
height: auto;
width: auto;
min-width: 100%;
min-height: 100%;
z-index: -1;
opacity: 0.9;
filter: grayscale(100%);
}
The last line of the filter is optional. You can take a look at the index.html code:
http://www.nozvvu.com/pruebas/index.html
Thank you!!
Regards