transcribe/transcribe.html at master · technotablet/transcribe · GitHub

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<!doctype html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Transcribe Offline An Audio / Video</title>
</head>

<style>
html, body {
	background-color:#eee;
	font-family: helvetica neue, arial;
	font-size:14px;
	}
h3 {
	padding:5px;
}
#transcript {
	padding-left:10px;
	padding-right:10px;
	font-size:12px;
	background-color:white;
	width:425px;
	height:250px;
	overflow:auto;
	border:1px solid #aaaaaa;
	border-radius: 5px;
}
.center {
	width:900px;
	margin: 0 auto;
}
.footer {
	font-size:12px; color:#1e1e1e;
}
.footer a {
	color:royalblue;
}
code {
	color:darkred;
}
</style>
<body>

<div class="center">

	<h3 style='background:#ccc'>Transcribe Audio / Video</h3>

	<div id="message" style='display:none;'></div>

	<div style="width:400px;float:left;">
		<video width=400 height=225 controls="true" autoplay id="player"></video>

		<div id="controls" style='display:none;'>
			<input type="button" id="btn_playpause" value="ll" onclick="playpause();">
			<input type="button" id="btn_rewind" value="&laquo; 3" onclick="fwdrewind('rewind');">
			<input type="button" id="btn_forward" value="3 &raquo;" onclick="fwdrewind('forward');">
			<input type=button value='Slow' onClick="speed('slow');">
			<input type=button value='Fast' onClick="speed('fast');">
			<input type=button value="1" id="btn_speed">

			<input type="button" id="btn_time" value="">
		</div> <!-- /#controls -->

		<P>
		Select an Audio/Video file: <input id="btn_file" type="file">
	</div>

	<div style="width:450px;float:right;">
		<div id="transcript" contenteditable='true' onkeyup='addData()'></div>

		<input type=button value='Download Transcript' onClick="download('transcript.html','transcript','text/html');">
	</div>

	<div style='clear:both;'></div>

	<P>&nbsp;</P>
	<hr size=1>
	<div class="footer">
	<strong>Shortcuts (toggle between Ctrl &amp; Command key between Windows &amp; Mac)</strong>
	<ul>
		<li> <code>CTRL + Up/Down Arrow</code> <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Increase/Decrease Speed</tt>
		<li> <code>CTRL + Left/Right Arrow</code> <tt>&nbsp;&nbsp;Go Back/Move Forward 3 Seconds</tt>
		<li> <code>CTRL + .</code> <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insert Timestamp</tt>
		<li> <code>CTRL + Esc</code> <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Play/Pause Toggle</tt>
	</ul>
	<P>&nbsp;</P>
	&copy; Vivek Kapoor &#149; <a href="https://exain.wordpress.com">https://exain.wordpress.com</a>
	</div>

</div>


<script>

function addData() {
	localStorage.setItem("transcription", document.getElementById('transcript').innerHTML );
}

function loadData() {
	document.getElementById('transcript').innerHTML = localStorage.getItem("transcription");
}

function playpause() {
	var player = document.getElementById('player');
	var btn = document.getElementById('btn_playpause');
	if (player.paused) {
		btn.value = "ll";
		player.play();
	} else {
		btn.value = "►";
		player.pause();
	}
}

function fwdrewind(activity) {
	var player = document.getElementById('player');
	var currentTime = player.currentTime;

	if (activity == "rewind") {
	player.currentTime = currentTime - 3;
	} else if (activity == "forward") {
	player.currentTime = currentTime + 3;
	}
}

function showtime() {
	// only start showing once file is loaded
	var controls = document.getElementById('controls');
	var btn_file = document.getElementById('btn_file');
	if (btn_file.value != "") {
		controls.style.display = 'block';
	}
	var player = document.getElementById('player');
	var btn = document.getElementById('btn_time');

	// Show the time
	setInterval(function(){ btn.value = formatSecondsAsTime(player.currentTime); },200);
}

function speed(activity) {

	var player = document.getElementById('player');
	var btn = document.getElementById('btn_speed');

	if (activity == 'slow') {
		btn.value = btn.value - 0.25;
	} else if (activity == 'fast') {
		btn.value = parseFloat(btn.value) + 0.25;
	}
	if (btn.value < 0.25) { btn.value = 0.25; }
	if (btn.value > 8) { btn.value = 8; }

	player.playbackRate = btn.value;
}

function download(filename, elId, mimeType) {
    var elHtml = document.getElementById(elId).innerHTML;
    var link = document.createElement('a');
    mimeType = mimeType || 'text/plain';

	var data = encodeURIComponent(elHtml);
	//console.log(data);

	document.body.appendChild(link);
	link.setAttribute("type","hidden");
	link.download = filename;
	link.href = 'data:'+mimeType+';charset=utf-8,' + data;
	link.click();

}

function setCurrent(value) {
	var player = document.getElementById('player');
	player.currentTime = value;
}

function timeUpdate() {

	var player = document.getElementById('player');
	//player.pause();
	//console.log(player);

	var cueTime = player.currentTime;

	//insertTextAtCursor("\n<a href='javascript:setCurrent(" + cueTime + ")'>[" + cueTime + "]</a> ") ;
	insertTextAtCursor(cueTime) ;
	addData();
}

function createTimeStamp(cueTime) {
	var element = document.createElement("a");
	element.setAttribute('href', "javascript:setCurrent("+cueTime+")");
	element.setAttribute('onclick', "javascript:setCurrent("+cueTime+")");
	element.setAttribute('style', "cursor:pointer");
	element.innerHTML = "["+cueTime+"]";
	return element;
}

function insertTextAtCursor(text) {
    var sel, range, html;
    if (window.getSelection) {
        sel = window.getSelection();
        if (sel.getRangeAt && sel.rangeCount) {
            range = sel.getRangeAt(0);
            range.deleteContents();
	    var textNode = createTimeStamp(text);
            range.insertNode( textNode );
	    range.setStartAfter(textNode);
        }
    } else if (document.selection && document.selection.createRange) {
        document.selection.createRange().text = text;
    }
}

(function localFileVideoPlayer() {
	'use strict'
  var URL = window.URL || window.webkitURL
  var displayMessage = function (message, isError) {
    var element = document.querySelector('#message')
    element.innerHTML = message
    element.className = isError ? 'error' : 'info'
  }
  var playSelectedFile = function (event) {
    var file = this.files[0]
    var type = file.type

    var videoNode = document.querySelector('video');

    var canPlay = videoNode.canPlayType(type)
    if (canPlay === '') canPlay = 'no'
    var message = 'Can play type "' + type + '": ' + canPlay
    var isError = canPlay === 'no'
    displayMessage(message, isError)

    if (isError) {
      return
    }

    var fileURL = URL.createObjectURL(file)
    videoNode.src = fileURL

    showtime();
  }
  var inputNode = document.getElementById('btn_file'); //document.querySelector('input')
  inputNode.addEventListener('change', playSelectedFile, false);
})()


// Auto Load Data the first time
loadData();

// Capture Keystrokes
document.onkeydown = function(evt) {
    evt = evt || window.event;

	if (evt.target.tagName == "DIV") {

		var keyCode = evt.keyCode;
		var cmd_held = evt.metaKey;
		var ctrl_held = evt.ctrlKey;

		if (cmd_held && keyCode == "190") {
			evt.preventDefault();
			timeUpdate();
		}

		if (keyCode == "27") {
			evt.preventDefault();
			playpause();
		}

		if (cmd_held && keyCode == "37") {
			evt.preventDefault();
			fwdrewind('rewind');
		}
		if (cmd_held && keyCode == "39") {
			evt.preventDefault();
			fwdrewind('forward');
		}
		if (cmd_held && keyCode == "38") {
			evt.preventDefault();
			speed('fast');
		}
		if (cmd_held && keyCode == "40") {
			evt.preventDefault();
			speed('slow');
		}

	}

};

function formatSecondsAsTime(secs) {
  var hr  = Math.floor(secs / 3600);
  var min = Math.floor((secs - (hr * 3600))/60);
  var sec = Math.floor(secs - (hr * 3600) -  (min * 60));

  if (hr < 10) {
   hr = "0" + hr;
  }
  if (min < 10){
    min = "0" + min;
  }
  if (sec < 10){
    sec  = "0" + sec;
  }

  return hr + ":" + min + ':' + sec;
}

document.getElementById('player').addEventListener('ended',playerended,false);
document.getElementById("btn_file").value = "";
function playerended() {
	var btn = document.getElementById('btn_playpause');
	btn.value = "►";
}

</script>
</body>
</html>