Playback failed with widevine content on iOS14

[yukihiro-m-play]

Playback failed and error occur with widevine content in ShakaPlayer Embedded Sample Project on iOS14. ShakaPlayer Embedded Sample Project include cdm v15.

[ErrorMessage]
Shaka Error DRM.FAILED_TO_GENERATE_LICENSE_REQUEST
(Requires devices certificate.,[object DOMException].)
[ErrorCode]
6006

Shaka Player Config and Contents setting is as follows:

[uri]
 https://storage.googleapis.com/wvmedia/cenc/h264/tears/tears_sd.mpd
[configuration]
 key=drm.servers.com\.widevine\.alpha
 value=https://proxy.staging.widevine.com/proxy

The cdm framework build command is as follows:

../configure --ios --cpu arm64 --eme-impl ../../prebuilt_cdm/shaka_plugin/release_cdm.json --disable-demo --disable-tests
../build.py

And we tried and confirmed the following:

• It occurs on iOS14 and iPadOS14. It does not occur on iOS 13.x.
• When a problem occurs, server certificate request and license request not send.
• It occurs only when release build. It does not occur when debug build.

Is there anything setting we are missing?

[TheModMaker]

Make sure to use CDM 15.2.4, there was a bug on the older versions that don't support iOS 14.

[yukihiro-m-play]

We used CDM 15.2.4, but playback failed same error.

[yukihiro-m-play]

We updated to widevine_cdm_secured_ios.framework for Release and succeeded in playing widevine content. Thank you for your support and sorry about this inconvinient.