Small devices

[TsarS]

Is it possible to show poster only on small devices?

[2013gang]

I think so, can you try this:

@media (min-width: 300px) {
    video {
        background: none;
    }
}

[TsarS]

but ng-style="{ 'background': 'url(' + posterUrl + ') #000 no-repeat center center fixed', 'z-index': zIndex}"

[2013gang]

@media (min-width: 300px) {
    video[style] {
       background: none !important;
    }
}

try this?