Playing a 3gp file with HTML5 does not work. I have Firefox 16 and Chromium Version 22 and the result I got is the following:
No video with supported format and MIME type found.
Here's the code I used:
<video controls="controls">
<source src="rtsp://v2.cache2.c.youtube.com/CiQLENy73wIaGwlkcZfgin6szRMYDSANFEgGUghzdGFuZGFyZAw=/0/0/0/video.3gp" type="video/3gpp">
Your browser does not support the video tag.
</video>
来源：https://stackoverflow.com/questions/13220019/how-to-play-3gp-video-in-html5