What is an SD2F File?

How to Open, Edit, & Convert SD2F Files

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A file with the SD2F file extension is an audio file that's in the Sound Designer II Audio format. The format was created by Digidesign, which is now called Avid, and is used with their Pro Tools software.

SD2F files hold audio data and other information relevant in the Pro Tools application. It's also used for exchanging information between digital audio workstation (DAW) programs.

Corel's Roxio Toast software can archive an audio disc as a Roxio Jam Disc Image file, and it uses the Sound Designer II Audio format to do it.

This type of SD2F file is a full backup copy of the disc.

Some Sound Designer audio files may use the SD2 file extension instead, most likely when used in the Windows version of the software. SD2 files, however, may also be Windows SAS 6.xx files.

How To Open an SD2F File

SD2F files can be opened with Avid Pro Tools or for free with Apple's QuickTime. Mac users can also open SD2F files with Roxio Toast.

Tip: I'm pretty sure any SD2F file you come across will be a Sound Designer II Audio file, but if not you can try opening it with Notepad++ to see the SD2F file as a text file. You can sometimes make out specific words within the file when it's opened this way, which you can use to help research the application that opens it.

The SAS (Statistical Analysis Software) software suite from SAS Institute may use SD2 files too but only with v6 of the Windows edition. Newer versions use the SAS7BDAT extension and the Unix edition uses SSD01.

Note: The ED2K file extension looks a bit similar to the SD2F extension. If your SD2F file won't open, be sure you aren't confusing it for an ED2K file, which doesn't open with the same software as SD2F files.

See How To Change the Default Program for a Specific File Extension if you need help changing the program that opens SD2F files by default on your computer.

How To Convert an SD2F File

I'm sure Avid Pro Tools can convert or export an SD2F file to a different format but I haven't been able to test this myself. In most programs, that type of feature is in the File > Save As or Export menu.

Note: I don't think Pro Tools versions 10.4.6 and newer support the SD2F format, so it's possible that opening the file in a newer version of the software will automatically convert it to a different, newer file format.

The Roxio Toast program mentioned above supports saving SD2F files as BIN/CUE files. You can then convert those BIN or CUE files to the more common ISO format.

Something else you can try is the free SdTwoWav tool to convert the SD2F files into WAV files, but you may have to rename them to have the .SD2 file extension since that's what the program recognizes.

If you're on Mac, you can convert SD2F files to the AAC audio format with Finder. TekRevue has some instructions on doing this.

Getting More Help With SD2F Files

See Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more.

Let me know what kinds of problems you're having with the SD2F file, what programs or converters you've tried already, and then I'll see what I can do to help.

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