You cannot use L3codeca.acm to create MP3 content in Windows 7 and in Windows Vista

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Article ID: 937141 - View products that this article applies to.
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In Windows 7 and in Windows Vista, you cannot use the Fraunhofer IIS MPEG Layer-3 codec (L3codeca.acm) to create MPEG-1 Layer 3 (MP3) content in a third-party application.


Because of licensing restrictions, you cannot use the L3codeca.acm file that is included in Windows 7 and in Windows Vista to encode MP3 content.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.


Article ID: 937141 - Last Review: May 18, 2012 - Revision: 2.0
  • Windows 7 Service Pack 1
  • Windows 7 Ultimate
  • Windows 7 Enterprise
  • Windows 7 Professional
  • Windows 7 Home Premium
  • Windows 7 Home Basic
  • Windows 7 Starter
  • Windows Vista Ultimate
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Enterprise
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Home Premium
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Home Basic
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Starter
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