EME not found, WebOS iFrame

[seanbecker15]

Have you read the FAQ and checked for duplicate open issues?
Yes

What version of Shaka Player are you using?
Latest (4.3.8)

Can you reproduce the issue with our latest release version?
Yes

Can you reproduce the issue with the latest code from main?
Yes

Are you using the demo app or your own custom app?
Custom

If custom app, can you reproduce the issue using our demo app?
I'd need to make significant code changes to try to reproduce

What browser and OS are you using?
webOS TV 6.0 (latest version of chrome)

For embedded devices (smart TVs, etc.), what model and firmware version are you using?
WebOS OLED48C1PUB (2021 OLED)

What are the manifest and license server URIs?
I'm using the demo assets (playready / dash).

What configuration are you using? What is the output of player.getConfiguration()?
Standard demo config

What did you do?
I've been working on a POC testing playback on WebOS. I've created a webdriver backend, set up the selenium grid, and got most of the test suite working end to end. Note that the backend uses an iframe (almost identical to the chromecast backend).

1. Create WebOS webdriver backend using iframe (very similar to chromecast backend)
2. Set up selenium grid, connecting to WebOS device
3. Run demo tests

What did you expect to happen?
DASH / PlayReady content should play. Tests should pass.

What actually happened?
DASH / PlayReady content fails to play. Several DRM related tests fail.

After enabling debug logs I noticed that the EME polyfill fails with message EME not available.. Upon further inspection, I found that navigator.requestMediaKeySystemAccess doesn't exist from within the context of the webdriver iframe. However, I confirmed that it does exist from the context outside of the iframe.

[seanbecker15]

I figured it might be helpful to document this issue if the Shaka team is looking to prioritize WebOS support at any point in the future. I'd be happy to provide more details if needed or assist with debugging remotely.

[avelad]

I added the info to #1330 Thanks!