.videowrapper {
    position: relative;
    overflow: hidden;
    background: transparent; /* Прозрачный фон */
}
.videowrapper,
.tn-atom.tn-atom__html {
    width: inherit;
    height: inherit;
}
video { 
    object-fit: cover; 
    width: 100%; 
    height: 100%; 
}