Video Thumbnail Generator
Online Snap Video Thumb
index.php<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Online Video Thumbnail Generator</title>
<meta name="description" content="Online tool to create snapshots of videos (local file or online by URL)">
<link rel="stylesheet" href="css/style.css" >
<style>
</style>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-RKLKKLZFDQ"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag() { dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'G-RKLKKLZFDQ');
</script>
<link href="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.css" rel="stylesheet">
<script src="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.js"></script>
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
<script>
function showInput(id, opt) {
console.log(opt)
document.getElementById('select-file').style.display = 'none';
document.getElementById('select-url').style.display = 'none';
document.getElementById(id).style.display = '';
}
function loadPage() {
var textFields = document.querySelectorAll('.mdc-text-field');
for (let index = 0; index < textFields.length; index++) {
var element = textFields[index];
new mdc.textField.MDCTextField(element);
}
}
window.addEventListener("load", loadPage);
</script>
</head>
<body>
<header class="mdc-top-app-bar">
<div class="mdc-top-app-bar__row">
<section class="mdc-top-app-bar__section mdc-top-app-bar__section--align-start">
<!--<button class="material-icons mdc-top-app-bar__navigation-icon mdc-icon-button" aria-label="Open navigation menu">menu</button>-->
<span class="mdc-top-app-bar__title">Online Video Thumbnail Generator</span>
</section>
<!-- <section class="mdc-top-app-bar__section mdc-top-app-bar__section--align-end" role="toolbar">
<a class="toolbar-menu" target="_blank" href="https://forms.gle/AkvW2rRQsTfobxFE8"
title="Feedback and feature requests">Feedback</a>
<button onclick="document.location='https://github.com/fraigo/online-video-thumbnail-generator'"
class="material-icons mdc-top-app-bar__action-item mdc-icon-button" aria-label="Options">
<img src="https://github.com/fluidicon.png" width="48"></button>
</section> -->
</div>
</header>
<main class="mdc-top-app-bar--fixed-adjust">
<div class="video_data">
<div class="mdc-card mdc-card--outlined">
<div>
<div class="mdc-form-field" >
<div class="mdc-radio">
<input class="mdc-radio__native-control" type="radio" onclick="showInput('select-url', this)" id="video_url"
name="video_source">
<div class="mdc-radio__background">
<div class="mdc-radio__outer-circle"></div>
<div class="mdc-radio__inner-circle"></div>
</div>
<div class="mdc-radio__ripple"></div>
</div>
<label for="video_url">Video from URL</label>
</div>
<div class="mdc-form-field" >
<div class="mdc-radio">
<input class="mdc-radio__native-control" type="radio" onclick="showInput('select-file', this)" id="video_file"
checked name="video_source">
<div class="mdc-radio__background">
<div class="mdc-radio__outer-circle"></div>
<div class="mdc-radio__inner-circle"></div>
</div>
<div class="mdc-radio__ripple"></div>
</div>
<label for="video_file">Video from file</label>
</div>
</div>
<div class="instructions mdc-form-field">(Currently, youtube/vimeo video URLS are not supported, only URLs
pointing to a video resource)</div>
</div>
<br />
<div class="mdc-card mdc-card--outlined select-source">
<div id="select-file">
<input type="file" class="mdc-text-field__input" id="videofile" accept=".mp4" onchange="loadVideoFile()">
</div>
<div id="select-url" style="display:none">
<label class="mdc-text-field mdc-text-field--filled">
<span class="mdc-text-field__ripple"></span>
<span class="mdc-floating-label" id="url-label">Video URL</span>
<input id="videourl" size="100" class="mdc-text-field__input" type="text" placeholder="https://"
aria-labelledby="url-label">
<span class="mdc-line-ripple"></span>
</label>
<div class="mdc-touch-target-wrapper">
<button class="mdc-button mdc-button--raised"
onclick="loadVideoURL(document.getElementById('videourl').value)">
<span class="mdc-button__ripple"></span>
<span class="mdc-button__touch"></span>
<span class="mdc-button__label">Load video</span>
</button>
</div>
<div class="instructions mdc-form-field">
For youtube URLs, you can use a service to convert Youtube videos to MP4 files (Google for "Youtube mp4").
<ul>
<li>Use the provided "Download link" URL here, or </li>
<li>Download the file to your device and select "Video from file"</li>
</ul>
</div>
</div>
</div>
<div class="mdc-card mdc-card--outlined video-preview">
<video id="video" controls width="640">
<source src="blank.mp4" type="video/mp4">
</video>
<div id="videoInfo" class="mdc-card">
</div>
<div>Select the frame to capture using video controls.</div>
<div id="videoControls" class="video-controls" style="display:none">
<div>
<input id="slider" oninput="goToTime(video,this.value)" onmouseover="this.title=this.value+'seg'" type="range" min="0" max="100" value="0" name="position">
</div>
<div class="button-container">
<button category="controls" onclick="goToTime(video,0)">⏮<br><span> </span></button>
<button category="controls" onclick="goToTime(video,video.currentTime-60)">⏪<br><span>-1m</span></button>
<button category="controls" onclick="goToTime(video,video.currentTime-5)">⏪<br><span>-5s</span></button>
<button category="controls" onclick="goToTime(video,video.currentTime-1)">⏪<br><span>-1s</span></button>
<button category="controls" onclick="goToTime(video,video.currentTime-1/25)">⏪<br><span>-1fr</span></button>
<button category="controls" onclick="video.paused?video.play():video.pause()">⏯<br><span> </span></button>
<button category="controls" onclick="goToTime(video,video.currentTime+1/25)">⏩<br><span>+1fr</span></button>
<button category="controls" onclick="goToTime(video,video.currentTime+1)">⏩<br><span>+1s</span></button>
<button category="controls" onclick="goToTime(video,video.currentTime+5)">⏩<br><span>+5s</span></button>
<button category="controls" onclick="goToTime(video,video.currentTime+60)">⏩<br><span>+1m</span></button>
<button category="controls" onclick="goToTime(video,video.duration)">⏭<br><span> </span></button>
</div>
</div>
</div>
</div>
<div class="video_output">
<div class="mdc-card mdc-card--outlined select-source">
<div>
<label class="mdc-text-field mdc-text-field--filled" id="videowidth">
<span class="mdc-text-field__ripple"></span>
<span class="mdc-floating-label" id="size-label">Image width</span>
<input id="videow" type=number size="5" onchange="resize()" value="640" class="mdc-text-field__input"
type="text" placeholder="" aria-labelledby="size-label" readonly>
<span class="mdc-line-ripple"></span>
</label>
<button id="snap" class="mdc-button mdc-button--raised snap_photo_btn" onclick="snapPicture()" disabled>
<span class="mdc-button__ripple"></span>
<span class="mdc-button__touch"></span>
<span class="mdc-button__label">Snap photo</span>
<span></span>
</button>
</div>
<div class="canvas-container">
<canvas id="canvas" width="640" height="480"></canvas>
<div>
<button id="save" class="mdc-button mdc-button--raised save_btn" onclick="savePicture(this)" disabled>
<span class="mdc-button__ripple"></span>
<span class="mdc-button__touch"></span>
<span class="mdc-button__label save_txt">Save Image</span>
<span></span>
</button>
<span id="snapsize"></span>
</div>
</div>
<a href="" id="imagelink" style="display:none">Image link</a>
</div>
</div>
</main>
<!-- start the script ... within that declare variables as follows... -->
<script src="js/app.js?20230605"></script>
</body>
</html>
app.jsvar video = document.querySelector('#video');
var canvas = document.querySelector('#canvas');
var file = document.querySelector('#videofile');
var videoControls = document.querySelector('#videoControls');
var videow = document.querySelector('#videow');
var snap = document.querySelector('#snap');
var save = document.querySelector('#save');
var videoInfo = document.querySelector('#videoInfo');
var snapSize = document.querySelector('#snapsize');
var context = canvas.getContext('2d');
var slider = document.querySelector('#slider');
var w, h, ratio;
//add loadedmetadata which will helps to identify video attributes
function timeUpdate() {
slider.setAttribute('max', Math.ceil(video.duration))
slider.value=video.currentTime
videoInfo.style.display='block';
videoInfo.innerHTML = [
"Video size: " + video.videoWidth + "x" + video.videoHeight,
"Video length: " + (Math.round(video.duration * 10) / 10) + "sec",
"Playback position: " + (Math.round(video.currentTime * 10) / 10) + "sec",
].join('<br>');
}
function goToTime(video,time){
video.currentTime=Math.min(video.duration,Math.max(0,time));
timeUpdate()
}
video.addEventListener('timeupdate', timeUpdate)
video.addEventListener('loadedmetadata', function () {
console.log("Metadata loaded");
videow.value = video.videoWidth;
videoInfo.innerHTML = [
"Video size: " + video.videoWidth + "x" + video.videoHeight,
"Video length: " + (Math.round(video.duration * 10) / 10) + "sec",
].join('<br>');
video.objectURL = false;
video.play();
video.pause();
resize();
}, false);
function resize() {
ratio = video.videoWidth / video.videoHeight;
w = videow.value;
h = parseInt(w / ratio, 10);
canvas.width = w;
canvas.height = h;
}
function snapPicture() {
context.fillRect(0, 0, w, h);
context.drawImage(video, 0, 0, w, h);
snapSize.innerHTML = w + "x" + h;
}
function selectVideo() {
file.click();
}
function loadVideoFile() {
var fileInput = file.files[0];
if (fileInput) {
console.log("Loading...");
console.log(fileInput);
/*
var reader = new FileReader();
reader.addEventListener("error", function () {
console.log("Error loading video data");
});
reader.addEventListener('progress',function(ev){
console.log("progress", ev.loaded, ev.total, Math.round(ev.loaded*100.0/ev.total));
});
reader.addEventListener("load", function () {
console.log("Video data loaded");
video.preload="metadata";
video.src = reader.result;
}, false);
reader.readAsDataURL(fileInput);
*/
if (video.objectURL && video.src) {
URL.revokeObjectURL(video.src);
}
video.pleload = "metadata";
video.objectURL = true;
video.src = URL.createObjectURL(fileInput);
videow.removeAttribute("readonly");
snap.disabled = false;
save.disabled = false;
videoControls.style.display = '';
}
}
function loadVideoFromFile(file) {
let reader = new FileReader();
reader.readAsArrayBuffer(file);
reader.onload = function (e) {
// The file reader gives us an ArrayBuffer:
let buffer = e.target.result;
// We have to convert the buffer to a blob:
let videoBlob = new Blob([new Uint8Array(buffer)], { type: 'video/mp4' });
// The blob gives us a URL to the video file:
let url = window.URL.createObjectURL(videoBlob);
video.src = url;
}
}
function loadVideoURL(url) {
video.preload = "metadata";
video.src = url;
videow.removeAttribute("readonly");
snap.disabled = false;
save.disabled = false;
}
function savePicture(btn) {
btn.disabled = true
var dataURL = canvas.toDataURL();
var link = document.getElementById("imagelink");
link.style.display = '';
link.style.opacity = 0
link.href = dataURL;
var rnd = Math.round((Math.random() * 10000));
link.setAttribute("download", "bacolchina.com-" + rnd + ".png");
link.click();
setTimeout(function(){
btn.disabled = false
link.style.display = 'none';
},100)
}
window.addEventListener("load", function () {
var buttons = document.querySelectorAll('button');
for (let index = 0; index < buttons.length; index++) {
var element = buttons[index];
element.addEventListener('click', function () {
var name = this.innerText.trim();
var category = "button";
if (this.getAttribute('category') == 'controls') {
name = 'Video Controls';
category = "controls";
}
var id = name.toLowerCase().replace(' ', '_');
gtag("event", category + "-" + id, {});
})
}
})
style.css
```css
/* Updated CSS for a more beautiful look */
body {
padding: 0;
margin: 0;
font-family: Arial, sans-serif;
}
main {
display: flex;
flex-wrap: wrap;
justify-content: center;
}
canvas {
border: 1px solid #ddd;
max-width: 45vw;
max-height: 90vh;
margin-bottom: 15px;
border-radius: 8px;
}
.mdc-top-app-bar__row {
height: 50px !important;
}
.mdc-top-app-bar--fixed-adjust {
padding-top: 50px !important;
}
video {
max-width: 45vw;
max-height: 90vh;
margin: 10px auto;
display: block;
border-radius: 8px;
}
#videourl {
max-width: 82%;
}
#videoInfo {
background-color: #f5f5f5;
display: none;
padding: 10px;
border-radius: 8px;
}
main>div {
margin: 20px 12px;
}
.select-source {
padding: 12px;
flex-wrap: wrap;
}
.video-preview {
text-align: center;
}
.instructions {
padding: 12px;
flex-wrap: wrap;
}
.toolbar-menu {
color: #fff !important;
padding-right: 12px;
}
.video_data {
width: 50%;
}
.video_output {
display: flex;
flex: 1;
}
.video_output > .mdc-card {
width: 100%;
border-radius: 8px;
}
.instructions ul {
margin-bottom: 0;
}
.mdc-touch-target-wrapper {
position: absolute;
top: 22px;
right: 12px;
}
.mdc-text-field--filled {
background-color: #fff !important;
}
.mdc-text-field--filled:active {
background-color: #fff !important;
}
.snap_photo_btn {
margin-bottom: 7px;
margin-left: 15px;
}
.buttons {
display: flex;
}
.buttons h4 {
padding-right: 15px;
font-family: Roboto;
font-weight: normal;
color: rgba(0, 0, 0, 0.87);
}
.space {
width: 20px;
}
.mdc-card {
font-family: Roboto, sans-serif;
padding: 8px;
margin: 4px 0;
border-radius: 8px;
}
.snap_button {
background: #6200ee;
border: 0;
border-radius: 4px;
padding: 0 15px 2px;
font-size: inherit;
color: #fff;
cursor: pointer;
box-shadow: 0px 5px 3px -3px rgba(0, 0, 0, 0.50);
height: 37px;
margin: 10px 0;
transition: background 0.3s;
}
.snap_button:hover {
background: #8731ff;
}
.snap_button:active {
background: #c49dff;
}
.canvas-container {
margin-top: 16px;
text-align: center;
}
#videoControls > div {
margin: 8px 0;
}
#videoControls .button-container {
text-align: center;
}
#videoControls button {
font-size: 2em;
border-radius: 5px;
background-color: #eee;
border: 1px solid #aaa;
padding: 8px 16px;
}
#slider {
width: 100%;
}
#videoControls button > span {
font-size: 16px;
}
@media (max-width: 1166px) {
#videoControls button {
font-size: 24px;
}
}
@media (max-width: 1023px) {
main {
flex-wrap: wrap;
}
.video_data {
width: 100%;
}
.video_output {
width: 100%;
}
video {
max-width: 90vw;
}
canvas {
max-width: 90vw;
}
}
@media (max-width: 600px) {
#videoControls button {
font-size: 20px;
}
}
@media (max-width: 480px) {
#snap {
width: 100px;
}
#videoControls > div {
display: flex;
justify-content: space-between;
}
#videoControls button {
font-size: 18px;
padding: 0 4px;
}
#videoControls button > span {
display: block;
text-align: center;
}
}
