[cocoflunchy]

For me it's a <video> element, which kind of makes more sense.

    <video style="display: block;" class="_534g" id="fbhome-cinemagraph" autoplay="1" loop="1">
        <source src="https://fbcdn-dragon-a.akamaihd.net/cfs-ak-ash3/676434/970/135351913305575_544816858.mp4">
        <source src="https://fbcdn-dragon-a.akamaihd.net/cfs-ak-prn1/676663/942/135351913305575_1958437471.ogv">
        <img class="_53ol _53ol img" src="https://fbcdn-dragon-a.akamaihd.net/cfs-ak-ash3/676513/617/135351913305575_1421925707.jpg" alt="">
    </video>

[sdqali]

I got a <video> tag as well. Firefox on Mac OS X.