mp4_control_Display._getVideoContainerBounds()
const container = document.createElement('div');
container.style.position = 'absolute';
container.style.top = '-9999px';
document.body.appendChild(container);
container.innerHTML = SVG_TEMPLATE(...);
const videoElem = container.querySelector('.video-container');
const rect = videoElem.getBoundingClientRect();
const bounds = {
x: rect.left - containerRect.left,
y: rect.top - containerRect.top,
width: rect.width,
height: rect.height
};
document.body.removeChild(container);