Home » Linux » mod_deflate brakes streaming of audio/video in Firefox (with combination of Quicktime plugin)

mod_deflate brakes streaming of audio/video in Firefox (with combination of Quicktime plugin)

Submitted by Jochus on 11 Jan 2011 - 09:54
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I recently had a problem with Firefox 3.6.12 and the Quicktime plugin. When I wanted to play an audio file, the audio file gets cut after 3 seconds, even if the audio file was longer than 3 seconds.
The problem was related to the mod_deflate compression of Apache HTTPD on our files. You need to disable this option for audio/video files.

We changed this detail in our .htaccess file:

<IfModule mod_deflate.c>
	# Insert filter
	SetOutputFilter DEFLATE
 
	# Netscape 4.x has some problems...
	BrowserMatch ^Mozilla/4 gzip-only-text/html
 
	# Netscape 4.06-4.08 have some more problems
	BrowserMatch ^Mozilla/4\.0[678] no-gzip
 
	# MSIE masquerades as Netscape, but it is fine
	BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
 
        # Don't compress images/audio/video
        SetEnvIfNoCase Request_URI \\.(?:gif|jpe?g|png|mp3|mp4|wav|avi|mpe?g)$ no-gzip dont-vary
 
	# Make sure proxies don't deliver the wrong content
	<IfModule mod_headers.c>
		Header append Vary User-Agent env=!dont-vary
	</IfModule>
</IfModule>

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