video_flv_js_demo/web/index.html

<script src="flv.min.js"></script>
<video id="videoElement" controls autoplay muted></video>
<script>
    if (flvjs.isSupported()) {
        var videoElement = document.getElementById('videoElement');
        var flvPlayer = flvjs.createPlayer({
            type: 'flv',
            url: 'movie.flv'
        });
        flvPlayer.attachMediaElement(videoElement);
        flvPlayer.load();
        flvPlayer.play();

    }
</script>