<script>
function test() {
    if (window.testRunner)
        testRunner.dumpAsText();
    matrixID.targetY.baseVal = 7;
    pID.innerHTML = 'PASS if no crash';
}
</script>
<body onload=test()>
<video src="x">
</video>
<svg filter="url(#filterID)" stroke-linecap="butt">
<filter id="filterID" font-rendering="optimizeLegibility">
<feConvolveMatrix id="matrixID" kernelMatrix="3 0 0 0 0 0 0 0 -3"/>
</filter>
</svg>
<p id="pID"></p>
</body>
