1908473 - Widevine not available in private browsing mode on 129 on Windows

Status: VERIFIED FIXED

(Core :: Audio/Video: Playback, defect, P1)

Description

[:Gijs (he/him)]

Originally encountered trying to use https://open.spotify.com/ , which produces an error saying "Playback of protected content is not enabled."

A simpler testcase (no login) is:

0. ensure DRM is enabled and you have a downloaded CDM for Widevine
1. open private browsing window
2. open https://shaka-player-demo.appspot.com/demo/

ER:

Sintel widevine demo is playable

AR:

Sintel widevine demo is greyed out and can't be played

On Spotify, I got an Uncaught (in promise) EMEError: No supported keysystem was found error.

I'm told :alwu knows what's up in this area. :-)

Comment 1

[Alastor Wu [:alwu]]

Attachment: Bug 1908473 - pass correct parameter for hardware decryption.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1896948

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The bug is marked as tracked for firefox129 (beta) and tracked for firefox130 (nightly). However, the bug still has low severity.

:jimm, could you please increase the severity for this tracked bug? If you disagree with the tracking decision, please talk with the release managers.

For more information, please visit BugBot documentation.

Comment 4

[Alastor Wu [:alwu]]

Comment on attachment 9413325 [details]
Bug 1908473 - pass correct parameter for hardware decryption.

Beta/Release Uplift Approval Request

• User impact if declined: Widevine doesn't work in the private window on Windows
• Is this code covered by automated tests?: No
• Has the fix been verified in Nightly?: No
• Needs manual test from QE?: Yes
• If yes, steps to reproduce: Follow the comment 0
• List of other uplifts needed: None
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): Very small change which is tweaking an incorrect parameter. That doesn't introduce any new ability or structural change.
• String changes made/needed:
• Is Android affected?: Unknown

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/ad21b8997d99
pass correct parameter for hardware decryption. r=media-playback-reviewers,padenot

Comment 6

[pstanciu]

https://hg.mozilla.org/mozilla-central/rev/ad21b8997d99

Comment 7

[Donal Meehan [:dmeehan]]

Comment on attachment 9413325 [details]
Bug 1908473 - pass correct parameter for hardware decryption.

Approved for 129.0b7

Comment 8

[Pulsebot]

https://hg.mozilla.org/releases/mozilla-beta/rev/36eb21594e2a

Comment 9

[Rares Doghi, Desktop QA]

Verified as fixed in our latest 129.0b7 as well as our latest Nightly build 130.0a1 (2024-07-22).