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Go Back   Audio/video stream recording forums > Media file management > Removing copy-protection (like DRM, AACS)
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  #1  
Old 01-05-2008, 12:58 AM
soccerdad soccerdad is offline
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Can't play legal DRM-protected WMA files on Microsoft Zune? Remove copy-protection!


Figured I should post this, just in case it helps someone... Anyone...

There's a file in the folder referenced below named "v3ks.bla". I copied that to the expected file named "drmv2.lic". Then I re-ran the freeme2 command line. It prompted me for the SID for that file. I wasn't sure if that's expected or not, but I entered the SID in the drm2.key file that drmdbg created. Freeme2 then started doing its thing - 98617 packets of length 16000. Didn't take long. At the end it gave an error - "Unknown packet id...", so I thought it failed and quit thinking about it for a while.

But when I brought up my Zune software, it found the created "Freed-..." file and was able to play it. It ignored the original file altogether, and if I manually tried to play it, it said it didn't support the file (or some such). I'm sync'ing to the Zune now - looks like it might be converting the format, as it's going pretty slow; but I'm pretty excited to see if this works.

I picked that v3ks.bla file by using Process Monitor (www.sysinternals.com) to see what files were accessed when I loaded and started the movie in WMP. When I saw it hit that file, I opened it. It was in an xml format, which is what it seemed like freeme2 was expecting based on the source code. Maybe I was just lucky, but so far so good...

In case anyone cares, the file is a .wmv of the Live Free or Die Hard movie. It comes on a second dvd in the special edition version, and it's already on that dvd (from "Fox Digital Media"). There's a ####-####-####-#### serial number in the packaging, and when you load that dvd, it starts some software that lets you copy the file off the dvd. It's targeted at plays4sure, but I wanted to see it on my new zune 80gb.

Cool stuff!

Donnie


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Originally Posted by soccerdad View Post
You may have fixed this and are getting ready to release a version with the fix. I saw in one of the doom9 threads where on Jan 3 2008 you said you were prepping a new binary release. But just in case...

The issue mentioned here where there is no "drmv2.lic" file in the registry-specified location ("C:\ProgramData\Microsoft\Windows\DRM" on Vista) is, I believe, causing the issue mentioned over on doom9, "Couldn't allocate space for license file!".

Because the file doesn't exist, the fseek / ftell calls that figure out how much space to allocate are probably returning -1, which when viewed as an unsigned int is 2^32 (4GB). That memory allocation will obviously fail. Should probably check if the file exists before opening and seeking.

What I don't know nearly enough to answer is why an expected "drmv2.lic" file isn't in that directory. There *is* a drmv1.lic file. Don't know what that means. [EDIT] There is a "drmv1.key" file in that folder. There are *no* .lic files in there at all.

FWIW...

Donnie
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Old 01-06-2008, 07:10 AM
Stream Recorder Stream Recorder is online now
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Re:Can't play legal DRM-protected WMA files on Microsoft Zune? Remove copy-protection


M$'s own player Zune should support play4sure... so there is no much sense to remove DRM protection from Windows Media files just to play them on M$ Zune player.
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Old 01-06-2008, 07:38 PM
soccerdad soccerdad is offline
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Re:Can't play legal DRM-protected WMA files on Microsoft Zune? Remove copy-protection


It should, but it doesn't. That's been one of the big controversies, or at least issues, with the release of the Zune - that the latest MS media software doesn't support their own DRM scheme.

I'm running Vista Ultimate with the very latest WMP as well as the Zune software, both on the same PC. After I use the serial # to copy the playsforsure-protected .wmv off the DVD, I play it in WMP no problem. However, the Zune software doesn't auto-recognize it. So I manually try to play the video using the Zune software, but it specifically says it doesn't support the "online store" from which the video was obtained.

If it had supported it, I wouldn't have spent 5-6 hours figuring out how to strip the DRM from it.

Donnie


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M$'s own player Zune should support play4sure... so there is no much sense to remove DRM protection from Windows Media files just to play them on M$ Zune player.
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Old 01-07-2008, 01:44 AM
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Re:Can't play legal DRM-protected WMA files on Microsoft Zune? Remove copy-protection


Quote:
Originally Posted by soccerdad View Post
It should, but it doesn't. That's been one of the big controversies, or at least issues, with the release of the Zune - that the latest MS media software doesn't support their own DRM scheme.
That's really weird... but I can expect such kind of things from M$.
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