Widevine DRM Level Invoked

[Hakai-Shin]

1. I am using dash js sample example for widevine drm and I want to know which level (L1,L2,L3) is being invoked.
2. I also want to know how to force dashjs player to use widevine l3 level.
3. What does black screen with audio playing means for a drm protected content.

I am using this example http://reference.dashif.org/dash.js/latest/samples/drm/widevine.html

[dsilhavy]

1. dash.js lets you define a robustness level as part of the DRM configuration. To use Hardware or Software DRM the robustness level or the key system string(Playready only) can be set accordingly. Some documentation can be found here: https://github.com/Dash-Industry-Forum/dash.js/wiki/Digital-Rights-Management-(DRM)-and-license-acquisition#robustness-levels-hard---software-drm . An example can be found here: https://reference.dashif.org/dash.js/nightly/samples/drm/robustness-level.html . Note that the DRM license server defines the required security level. You might be able to see which security level is required by parsing the license response.
2. See 1), in the end it is up to the license server/backend to define the required security level
3. Usually content will not start if you miss a valid license. Audio only can indicate that the video AdaptationSets have been filtered due to unsupported codecs.

[Hakai-Shin]

Thank you for responding,

1. can you tell me how to parse license response.
2. Regarding your 3), the player seems to be working for clear content but when the same content is packaged with widevine protection , it is showing black screen. So we believe that the reason should'nt be unsupported codec.