JSFiddle - React, Tailwind, and code Playground

by luiru72

HTML

<!DOCTYPE html>

<!--
Copyright 2017 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->

<html lang="en">
<head>

<script>
//  philipwalton.com/articles/the-google-analytics-setup-i-use-on-every-site-i-build
window.ga = window.ga || function() {
  (ga.q = ga.q || []).push(arguments);
};
ga('create', 'UA-33848682-1', 'auto');
ga('set', 'transport', 'beacon');
ga('send', 'pageview');
</script>
<script async src="https://www.google-analytics.com/analytics.js"></script>

<meta charset="utf-8">
<meta name="description" content="Simplest possible examples of HTML, CSS and JavaScript.">
<meta name="author" content="//samdutton.com">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta itemprop="name" content="simpl.info: simplest possible examples of HTML, CSS and JavaScript">
<meta itemprop="image" content="/images/icons/icon192.png">
<meta id="theme-color" name="theme-color" content="#fff">

<link rel="icon" href="/images/icons/icon192.png">

<base target="_blank">


<title>MediaStream Recording</title>

<link rel="canonical" href="https://simpl.info/mediarecorder" />


</head>

<body>

Adatpted from (thanks to): <a href="https://simpl.info/mediarecorder/">https://simpl.info/mediarecorder/</a>

  <div id="container">

    <h1>MediaStream&nbsp;Recording</h1>
    
    <div>
      mime-type (example: video/webm;codecs=vp8,opus)
    </div>  
    <div>
      <input id="mimetypeinput" value="video/webm;codecs=vp8,opus" size="100" />
    </div>

    <video id="gum" autoplay...

CSS

button {
  margin: 0 3px 10px 0;
  padding-left: 2px;
  padding-right: 2px;
  width: 99px;
}

button:last-of-type {
  margin: 0;
}

p.borderBelow {
  margin: 0 0 20px 0;
  padding: 0 0 20px 0;
}

video {
  height: 232px;
  margin: 0 12px 20px 0;
  vertical-align: top;
  width: calc(20em - 10px);
}

video:last-of-type {
  margin: 0 0 20px 0;
}

video#gumVideo {
  margin: 0 20px 20px 0;
}

@media (max-width: 500px) {
  button {
    font-size: 0.8em;
    width: calc(33% - 5px);
  }
}

@media (max-width: 720px) {
  video {
    height: calc((50vw - 48px) * 3 / 4);
    margin: 0 10px 10px 0;
    width: calc(50vw - 48px);
  }

  video#gumVideo {
    margin: 0 10px 10px 0;
  }
}

#mimetypeinput {
  margin-bottom: 20px;
}

JavaScript

/*
Copyright 2017 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

'use strict';

// This code is adapted from
// https://rawgit.com/Miguelao/demos/master/mediarecorder.html

var mediaSource = new MediaSource();
var logArea = document.querySelector("#logArea");
mediaSource.addEventListener('sourceopen', handleSourceOpen, false);
var mediaRecorder;
var recordedBlobs;
var sourceBuffer;
var windowstream;
var gumVideo = document.querySelector('video#gum');
var recordedVideo = document.querySelector('video#recorded');

var recordButton = document.querySelector('button#record');
var playButton = document.querySelector('button#play');
var downloadButton = document.querySelector('button#download');
recordButton.onclick = toggleRecording;
playButton.onclick = play;
downloadButton.onclick = download;

consolelog('location.host:', location.host);
// window.isSecureContext could be used for Chrome
var isSecureOrigin = location.protocol === 'https:' ||
  location.host.includes('localhost');
if (!isSecureOrigin) {
  alert('getUserMedia() must be run from a secure origin: HTTPS or localhost.' +
    '\n\nChanging protocol to HTTPS');
  location.protocol = 'HTTPS';
}

var constraints = {
  audio: true,
  video: true
};

navigator.mediaDevices.getUserMedia(
  constraints
).then(
  successCallback,
  errorCallback
);

function successCallback(stream) {
  consolelog('getUserMedia() got stream: ', stream);
  windowstream = stream;
  gumVideo.srcObject = stream;
}

function errorCallback(error) {
 ...