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Changing QuickTime X hidden preference settings System 10.6
Snow Leopard only hintThere are a number of settings in QuickTime X which are not exposed in the Preference panel or the QuickTime Player app. These are two QuickTime-related CLI tools included in Snow Leopard that you may be interested in for exploring these settings, and adjusting their values:

qtdefaults -- lets you set and reset many of the items formerly found in the QuickTime Preference panel.

mediastreamsegmenter -- talks to IP-based encoder boxes used for HTTP Live Streaming.

Read the man pages for these tools for a description of the settings they can affect and how to use them.

There is also an excellent set of AppleScripts for managing hidden preferences in QuickTime X. The ReadMe file on the disk image documents what the scripts do, suggests a few other commands, and states how to restore things to default condition. Thanks to Sal Soghoian of Apple for pointing out the existance of the scripts.

[crarko adds: I tested some , but not all, of the AppleScripts, and they work as described.]
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Changing QuickTime X hidden preference settings
Authored by: mindsnare1349 on May 21, '10 09:56:18AM

still searching for a hidden pref to turn off that damn QT cache in "/private/var/folders/8R/8RWfRISPH+S1QmLVhvR5o++++TI/-Tmp-/MediaCache" :-/

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Changing QuickTime X hidden preference settings
Authored by: zo219 on May 27, '10 08:55:58PM

Sadly, good luck with that.

What you can do, however, is make an alias to /var/folders and drop it in your ~/Library/Caches folder ... where I go rooting around for various oversized caches and *dump* them.

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QuickTime Player X Preference Pane
Authored by: derekcurrie on May 23, '10 11:42:55AM

There is also a 3rd party preference pane that covers many of the hidden preferences. It is called "QuickTime Player X Preference Pane" and is available at:

It works fine. The included preferences are: Rounded Corners, Allow Simultaneous Recordings, Autoplay Movies, Show Closed Captioning & Subtitles, Exit Fullscreen Mode on Application Switch, Show Inspector At Launch, Titlebar & Controller Fade Out, Number of Recent Documents. You can also get it combined with the same developer's "iTunes Preferences" pane as "Snow Leopard Combo Pane".

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Changing QuickTime X hidden preference settings
Authored by: bibliophile74 on May 27, '10 11:39:14AM


Thanks for the tip. Is there any way of making this apply to switching between applications?
It would be nice if command tab would only display the applications assigned to the current space you're in.
Any ideas?

Thanks in advance!

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