transparent video ffmpeg encoding for chrome and safari
ffmpeg -i "movie-prores.mov" -c:v libvpx-vp9 movie-webm.webm
<video width="600" height="100%" autoplay loop muted playsinline>
<source
src="https://rotato.netlify.app/alpha-demo/movie-hevc.mov"
type='video/mp4; codecs="hvc1"'>
<source
src="https://rotato.netlify.app/alpha-demo/movie-webm.webm"
type="video/webm">
</video>