Webm:
.
[test link](https://example.com/file.webm)
.
<p><h1>test link</h1><div class="body"><video ><source type="video/webm" src="https://example.com/file.webm"/></video></div></p>
.

MP3:
.
[](https://example.com/file.mp3)
.
<p><h1>Untitled audio</h1><div class="body"><audio ><source type="audio/mpeg" src="https://example.com/file.mp3"/></audio></div></p>
.

OGV:
.
[test link](https://example.com/file.ogv)
.
<p><h1>test link</h1><div class="body"><video ><source type="video/ogg" src="https://example.com/file.ogv"/></video></div></p>
.

Non-media link
.
[test link](https://example.com/file.php)
.
<p><a href="https://example.com/file.php">test link</a></p>
.
