I can no longer play videos on my website, after flashplayer was discontinued

You don't need a player.  HTML5 <video> with MP4 file type is supported by all browsers and web devices now.

You will need access to your native video files and a means for transcoding video to MP4 file type.  Use Adobe Media Encoder, Handbrake or an online video converter. 

The alternative is to upload video to YouTube and embed the YouTube iframe into your HTML5 code manually.

Example:

<!doctype html>
<html lang="en">
<head>
<title>Bootstrap 4.5.2 ~ Responsive Video</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">

<!--Bootstrap CSS-->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
</head>

<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark"> <a class="navbar-brand" href="#">Brand/Logo</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active"> <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a> </li>
<li class="nav-item"> <a class="nav-link" href="#">Link</a> </li>
<li class="nav-item"> <a class="nav-link" href="#">Link</a> </li>
<li class="nav-item"> <a class="nav-link" href="#">Link</a> </li>
</ul>
</div>
</nav>

<div class="container-fluid">
<div class="row">
<div class="col">

<h2>Self-Hosted ~ Aspect ratio 4:3</h2>
<div class="embed-responsive embed-responsive-4by3">
<!--CHANGE PATH & FILE NAME TO YOUR OWN POSTER IMAGE AND VIDEO FILE-->
<video title="Your Video Title" poster="path/YOUR_POSTER_IMAGE.jpg" controls="controls" >
<source src="path/YOUR_VIDEO_FILE.mp4" type="video/mp4">
</video>
</div>
</div>
</div>
<hr>
<div class="row">
<div class="col">
<h2>YouTube Hosted ~ Aspect ratio 16:9</h2>
<div class="embed-responsive embed-responsive-16by9">
<!--PASTE YT <IFRAME> CODE HERE-->
<iframe class="embed-responsive-item" src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>
</div>
</div>

<hr>
<div class="row">
<div class="col-md-10 text-center">
<footer>Footer goes here.... </footer>
</div>
</div>
</div>

<!--First jQuery then Popper then Bootstrap JS--> 
<script src="https://code.jquery.com/jquery-3.2.1.min.js" integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4=" crossorigin="anonymous"></script> 
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script> 
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</body>
</html>

Hope that helps.

Apparently Dreamweaver does not support alternative video formats??

By @GUYLEE

Go to Insert > HTML > HTML 5 Video

My dreamweaver won't allow my video to play on my website

Merging with other message... Moderator