Webkit-Media-Controls-Timeline применить jQuery
$(`<style>
video::-webkit-media-controls-panel,
video::-webkit-media-controls-timeline{display: none;}
video::-webkit-media-controls-panel{background-image:none !important}
</style>`).appendTo('head');
// Js Fiddle Link
https://jsfiddle.net/x04z2cqk/2/
Mr. Samy