What is the ST4 file format?
A file with the .ST4 extension is a file known as Pinnacle Studio 400 Project. It belongs to the Video Files category. This format is associated with Pinnacle Systems, Inc..
The reliable way to open a .ST4 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .ST4 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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