비디오 관련 질문 좀 드립니다 채택완료

</p><p> <input type="button" name="tab_radio" value="<?=$dirname[$i]?>" style="width:115px"  onclick="tab_change(<?=($i+1)?>)" />  
 <div id="tab_content6" style=" display:none; ">
<video src="/1111/video/0.mp4" class="v01" style="height:500px;"playsinline loop muted autoplay  type="mp4" alt="map"/>
</div>  
<? 
} 
?> 
</div> </p><p><script type="text/javascript">
console.clear();
videos = document.querySelectorAll("video");
for (var i = 0, l = videos.length; i < l; i++) {
    var video = videos[i];
    var src = video.src || (function () {
        var sources = video.querySelectorAll("source");
        for (var j = 0, sl = sources.length; j < sl; j++) {
            var source = sources[j];
            var type = source.type;
            var isMp4 = type.indexOf("mp4") != -1;
            if (isMp4) return source.src;
        }
        return null;
    })();
    if (src) {
        var isYoutube = src && src.match(/(?:youtu|youtube)(?:\.com|\.be)\/([\w\W]+)/i);
        if (isYoutube) {
            var id = isYoutube[1].match(/watch\?v=|[\w\W]+/gi);
            id = (id.length > 1) ? id.splice(1) : id;
            id = id.toString();
            var mp4url = "<a href="<a href="http://www.youtubeinmp4.com/redirect.php?video=" target="_blank" rel="noopener noreferrer">http://www.youtubeinmp4.com/redirect.php?video=</a>"><a href="http://www.youtubeinmp4.com/redirect.php?video=" target="_blank" rel="noopener noreferrer">http://www.youtubeinmp4.com/redirect.php?video=</a></a>";
            video.src = mp4url + id;
        }
    }
}
</script></p><p>