.DRF Compressed File

genusys
genusys used Ask the Experts™
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Received a CD with .WAV and .PDF files that have an extension of .DRF. Anyone ever see this or know what to use to uncompress with?
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Joe WinogradDeveloper
Fellow 2017
Most Valuable Expert 2018

Commented:
I suggest reading my EE article to figure out what a DRF is:

How to determine the type of file from its contents

It provides four popular links to try to figure it out from just the extension, but, as the title indicates, it also shows how to figure it out from the actual contents of the file. Regards, Joe

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Commented:
Joe:

No go
Developer
Fellow 2017
Most Valuable Expert 2018
Commented:
> No go

Could you please elaborate a bit? What do the four links say about it? What does TrID/TrIDNet say about it?

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Commented:
Sorry, got busy and wanted to let you know I saw your reply.  

TrID/TRIDNet came back with unknown, which was disappointing. The others came back with unknown except one which said it was VIZRender. I know that it isn't VIZRender and 3DS-Max wasn't an option on the customer's network to just give it a try.  

My suspicion, since it came from a law firm, is that the paralegal that sent it did an export from their case management system and that the format is proprietary to the CMS. I think this because the filenames were all like GS000-xxxxxx.PDF.DRF, GS000-xxxxxx.WAV.DRF all 1KB in size. It looks like each file is either a PDF or WAV and compressed or the para just sent the filename/list out of the CMS.

The sender is going to redo the CD and send it again.

BTW, i really liked the TrID program. It will come in handy.

Thanks for the help!
Joe WinogradDeveloper
Fellow 2017
Most Valuable Expert 2018

Commented:
> Sorry, got busy and wanted to let you know I saw your reply.

No problem...I appreciate that.

> I know that it isn't VIZRender

I agree with you.

> My suspicion, since it came from a law firm, is that the paralegal that sent it did an export from their case management system

Good thought! It could also be the underlying document management system, namely, Hummingbird, which uses the DRF extension. Hummingbird was acquired years ago by Open Text, a major player in the DMS arena. Here's a GitHub that claims to have a JavaScript method to open Hummingbird (DRF) files:
https://gist.github.com/odoe/1095296

> i really liked the TrID program. It will come in handy.

Glad to hear it. As you discovered with DRF, TrID doesn't always help, but over the years I've found it to be very useful. Regards, Joe

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