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Unofficial VirtualDub Support Forums > Codec Discussion > Can't Install Ac3 Codec In Windows 7


Posted by: Ool Feb 19 2010, 05:46 PM
Hi. This might be a Windows 7 newbie problem...

I'm trying to install the AC3ACM.inf file, but whenever I right click on it and choose "install" a popup window opens for a fraction of a second and then closes again, too fast for me to make out what it says. It doesn't matter whether I choose the x86 or the x64 version. Same result.

After that VirtualDub tells me that it still doesn't have a decompressor for the audio format.

When I go into "Programs and Features" in the control panel there is an AC-3 ACM Codec on top of the list, but when I click on "uninstall" it tells me that an error occurred and that the program may already be uninstalled and whether I wish to remove it from the list.

Do I have to do the installation as administrator or something, and how do I do that?

Posted by: Dstruct Feb 19 2010, 05:57 PM
QUOTE (Ool @ Feb 19 2010, 07:46 PM)
Do I have to do the installation as administrator?

Worth a try ...

Posted by: Ool Feb 19 2010, 06:24 PM
How? There's no "install as administrator" option. I hate changes!

I opened the command prompt as administrator and did the "rundll32 setupapi.dll,InstallHinfSection DefaultInstall 0 <drive and path>\ac3acm.inf" thing, as in the other thread down below.

The only difference was that I didn't get an error message any more when I uninstalled the codec again in "Programs and Features."

But VirtualDub still would tell me that it can't find an audio decompressor.


Oh, wait, now it's working. I decided to install the x86 version that way. That one VirtualDub accepted. Well, okay, 32bit it is...


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