Showing how much of the video has preloaded using video.buffered . Final Tips for Your Pen
volumeInput.addEventListener('input', () => video.volume = volumeInput.value; ); custom html5 video player codepen
.volume-slider::-webkit-slider-thumb -webkit-appearance: none; width: 12px; height: 12px; background: #f97316; border-radius: 50%; cursor: pointer; box-shadow: 0 0 4px white; border: none; Showing how much of the video has preloaded using video