CEF Forum

Hello everyone. I want to know how to open Widevine, I called CefRegisterWidevineCdm before CefInitialize and CefRegisterWidevineCdm callback return CEF_CDM_REGISTRATION_ERROR_NONE, but when I tested it at https://bitmovin.com/demos/drm it showed that Widevine is not turned on, I need some help, thank your very much.I run on Mac10.15, cef branch is 3987,widevine version is 4.10.1192.0.

See the CefRegisterWidevineCdm documentation.

magreenblatt wrote:See the CefRegisterWidevineCdm documentation.

Thank you for your reply. After reading the document, I followed the instructions in the document, but I still don't know how to solve the problem. Can you provide some tips? Thank you

Prepare the manifest, implement CefRegisterCdmCallback, call CefRegisterWidevineCdm and check what is OnCdmRegistrationComplete saying.
There is also an example in tests/cefclient/browser/drm_test.cc.

ndesktop wrote:Prepare the manifest, implement CefRegisterCdmCallback, call CefRegisterWidevineCdm and check what is OnCdmRegistrationComplete saying.
There is also an example in tests/cefclient/browser/drm_test.cc.

I have prepare manifestand,implement CefRegisterCdmCallback,and OnCdmRegistrationComplete say CEF_CDM_REGISTRATION_ERROR_NONE.But when I tested it at https://bitmovin.com/demos/drm it showed that Widevine is not load.

We have the same problem here on linux platform. Downloaded the widevinecdm.so, called CefRegisterWidevineCdm with a path where the necessary files are located before calling CefInitialize. The CefRegisterCmdCallback::OnCdmRegistrationComplete is called with a error_code == 0.
The page https://bitmovin.com/demos/drm says that no drm is available.

Used versions:
CEF: 91.1.19+ga92e5d5+chromium-91.0.4472.101
Widevine: 4.10.2209.1-linux-x64

Manifest:

Code: Select all

{
    "arch": "x64",
    "description": "Widevine Content Decryption Module",
    "manifest_version": 2,
    "name": "WidevineCdm",
    "os": "linux",
    "version": "4.10.2209.1",
    "x-cdm-codecs": "vp8,vp09,avc1,av01",
    "x-cdm-host-versions": "10",
    "x-cdm-interface-versions": "10",
    "x-cdm-module-versions": "4",
    "x-cdm-persistent-license-support": false
}

Any suggestions?

Update to M93 or newer. See https://groups.google.com/g/cef-announc ... -uI0miAgAJ

From the groups conversation:

... Support for Widevine in CEF has now been enabled by default starting with M93 and the required CDM module will downloaded automatically shortly after application start. ...

Is there theoretically speeking a way to ship the CDM module with the client application instead of an automated download?

The CDM will be loaded from disk at startup if it already exists in the correct directory location. An installer could do that.

Hm, reading the docs it seems that now there is no possibility to change only the path where widevine is located, like the *path* parameter to CefRegisterWidevineCdm. Do we see this correctly?