I am not able to open video files on our web site in Firefox.




7 years ago
7 years ago


(Reporter: trev, Unassigned)


5 Branch
Windows 7

Firefox Tracking Flags

(Not tracked)





7 years ago
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0) Gecko/20100101 Firefox/5.0
Build ID: 20110615151330

Steps to reproduce:

I have checked with other people and no one is able to open wmv, MP4 or other video files using Firefox - but can using MSIE and/or Chrome

Comment 1

7 years ago
The example URL in the summary is returning a 404 not found on all browsers. Please check and edit a working example into the URL field.

Also be sure the webserver is sending the correct Content-type HTTP header associated with the given format along with the video files, as listed at
to invoke the correct plugin needed for video playback, or as listed at
for natively supported formats.

You can check the HTTP headers being sent using http://web-sniffer.net/

Comment 2

7 years ago
Sorry - should have been www.radschool.org.au/magazines/Vol36/smokes.wmv

little "m"
Summary: I am not able to open video files on our web site in Firefox, I can do it in MSIE and/or Chrome but not Firefox. One site is www.radschool.org.au/Magazines/Vol36/smokes.wmv → I am not able to open video files on our web site in Firefox.
Please report the bug to IE and Chrome. They should display text/plain as text/plain as Firefox does and should not play it as video/x-ms-wmv

Open http://web-sniffer.net and enter the given URL:
Status: HTTP/1.1 200 OK
Server:	Zeus/4.3	
Date:	Sun, 14 Aug 2011 13:51:43 GMT	
Connection:	close	
Content-Type:	text/plain	
Content-Length:	1783235	
Accept-Ranges:	bytes	
Last-Modified:	Sat, 13 Aug 2011 20:36:06 GMT	
Vary:	Accept-Encoding

The server sends us text/plain and Gecko displays it as text/plain.
You have to fix the server to send the correct mime-type/content-type header.
Last Resolved: 7 years ago
Resolution: --- → INVALID
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