Chrome/Firefox: YouTube doesnt run very efficiently in Chrome and Firefox.
In fact, How-To Geek points out, its a battery hog.
you’ve got the option to get around this problem with the h264ify extensions.
That means your setup processor doesnt have to do more work and less battery power is wasted.
But devices that support hardware-accelerated decoding of VP8 and VP9 arent as common (if even available).
Besides saving your battery life, playback should be smoother, particularly on laptops with limited power.