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Unofficial VirtualDub Support Forums > Codec Discussion > Can't Install Acmac3 Codec


Posted by: ChironProxima Feb 11 2010, 12:53 AM
When I try to install the ACMAC3 package on my Windows 7 x64 operating system by right-clicking on the ACMAC3.inf file and choosing "install", a window with a prograss bar appears briefly than disappear wich seems to indicate that the installation was successfull, but when I check in Virtualdub in the audio codec list, it's not there... I've also tried this method:


If you're having trouble getting your audio codecs to show up in windows 7 x64 then try this:

Open cmd.exe
CMD: cd c:\windows\syswow64
Extract your codec to C: (or wherever)
CMD: rundll32 setupapi.dll,InstallHinfSection DefaultInstall 0 C:\AC3ACM.inf



But I get an error message saying: "Unable to copy file ACMAC3.acm to destination folder"

I also get the same message for the file "ACMAC3.inf"

Any idea what I'm doing wrong ?

On my old XP laptop, the AC3 codec was showing in VirtualDub's codec list "naturally" (didn't have to install any codec or plug-in), but when I run the same version (VD 1.9.6) in Windows 7 x64, the codec is not there, only a blank space between the "no compression PCM" and the "CCITT A-law" codecs. I've also tried the AMD64 version of VD, but the same problem persist.



P.S.: I'm running VirtualDub with a HP Pavilion laptop with 4 GB or ram, and I have very few programs installed; except for a codec pack that I've downloaded from Windows7codecs.com

Posted by: fredgiblet Feb 11 2010, 01:44 AM
AC3 encoders don't come with Windows so if you had it before it was installed separately. The 64-bit version of VD would use the 64-bit version of AC3ACM which should not have any problem installing, but the 64-bit version of VD can't use 32-bit codecs or filters so I wouldn't recommend it. As for fixing the install I can't help, I used the 64-bit version.

Posted by: heustess Feb 11 2010, 07:42 AM
@ChironProxima

Perhaps this link will help.
http://www.videohelp.com/forum/archive/making-32-bit-vfw-acm-codecs-available-to-xp-64-bit-edition-t316263.html

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