View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001355 | MMW v4 | Player | public | 2004-05-12 16:38 | 2005-11-28 19:45 |
| Reporter | rusty | Assigned To | |||
| Priority | urgent | Severity | feature | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Summary | 0001355: WMA10 DRM support | ||||
| Description | Once 0000809 playback support for standard wma9 files is complete, we'll need to add DRM support to the implementation so that playback, conversion, levelling, export, etc. all work as expected. | ||||
| Tags | No tags attached. | ||||
| Fixed in build | 917 | ||||
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From what I see at: http://www.microsoft.com/windows/windowsmedia/licensing/consumerdevices.aspx#win_apps_2 Everything that we need to get started with development is in the Windows Media Format 9.5 and 9s SDK (9.5 is needed for XP and 9s is needed for previous OSes). Both of these can be accessed without signing any agreements--they can just be downloaded. In addition, we need a DRM license certificate that I've requested via: http://wmlicense.smdisp.net/licenserequest/default.asp (note: request number for this license is 24219) This is likely to take a couple of weeks. Note: This does not include a license to include WMA codecs -- please let me know if these are required for our purposes. Re-assigning to Jiri to confirm that there isn't any other technology that you feel we need to License, and so that you can begin any work necessary for integration (I'll send you the certificates as soon as I receive them). |
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I can confirm that we only need certificates, the plug-in will be recompiled with them then. |
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Update: the relevant URL is http://www.microsoft.com/windows/windowsmedia/licensing/Licensing_Win_Apps_CustApp.aspx As stated previously: Windows Media Format 9.5 SDK: to read/write WMA on Windows XP - No agreement needed Windows Media Format 9 SDK: to read/write WMA on pre-Windows XP - No agreement needed WM DRM Certificates Agreement for Format SDK 9s and 9.5 - Agreement required Question: Do these 2 SDKs allow us to encode using the new WMA9 codec? (from the documents, it was unclear whether these allow for encoding or if I need to make a separate application for the WMA9 encoder). |
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Afaik, enconding should be possible directly using any WM Format SDK, although I don't know if they don't require anything to sign or pay any royalties? |
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That's my understanding as well. And there's no requirement to pay royalties on WMA encoding as long as it's deployed on the windows platform. |
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Jiri, I have the necessary files from MS--will transfer over encrypted connection. |
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Fixed in build 917. - This should work reasonably well now, in more details: 1. Playback of DRM protected files should work fine, probably for all DRM types. 2. License acquisition of files that don't have locally stored licenses yet should work somehow too, but wasn't much tested. 3. Upload DRM content to portable devices should work fine for <DRM10, DRM10 probably doesn't work. 4. Burning to Audio CDs should work. 5. Conversions of DRM protected tracks to other formats are forbidden. |
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Tested a bit (needs more) but could you give me a bit of feedback on the following: 1. Playback of DRM napster files works. 2. License acquisition of files that don't have locally stored licenses -- Can you explain what to test? 3. Upload DRM content to portable devices - not tested, but how would this work (i.e. devices usually support DRM 10 so how could such tracks play on devices?) 4. Tested with Napster (it fails as expected) 5. Conversions of DRM protected tracks to other formats. The message that is given is something like 'Cannot decode file xxxx'. Is it possible to change this to 'Cannot convert file due to DRM restrictions: xxxx' |
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1. Not a problem, the fact that we don't have DRM 10 license doesn't necessarily mean that we can't play DRM 10 (or higher content), it depends on the license settings (there's a lot of options). 2. There's probably not much to test, I only tried if tracks play after I deleted "C:\Documents and Settings\All Users\DRM" folder. Correctly a web page appeared for CD ripped WMA DRM tracks. 3. The same as 1, i.e. we can work with DRM protected files as long as some special features of DRM 10 aren't used. I tested upload of CD ripped tracks and it worked with all devices I have (where it can theoretically work). 4. Yes, as expected (a subscription service). 5. I'd prefer a common message for now (i.e. make a general wording) due to current plug-in structure, although I agree that it will be better to make a special message in the future. |
