Как снять входное видео
<input type="file" accept="video/*" capture="camera" id="recorder">
<video id="player" controls> </video>
<script>
var recorder = document.getElementById('recorder');
var player = document.getElementById('player');
recorder.addEventListener('change', function(e) {
var file = e.target.files[0];
player.src = URL.createObjectURL(file); });
</script>
Nepali Programmer