$(document).on("change", ".file_multi_video", function(evt) {
var $source = $('#video_here');
$source[0].src = URL.createObjectURL(this.files[0]);
$source.parent()[0].load();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<video width="400" controls>
<source src="mov_bbb.mp4" id="video_here">
Your browser does not support HTML5 video.
</video>
<input type="file" name="file[]" class="file_multi_video" accept="video/*">