1900626 - Firefox does not support ClearKey cdm on Android

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[craftspider23]

Steps to reproduce:

go on this site:
https://www.gumlet.com/tools/browser-capabilities-checker

go to the "Encrypted Media Extensions support" category and search for "ClearKey".
In the "SUPPORTED" category it will be marked as "no".

This is a defect as it is supported on the windows version and the ios version.

Actual results:

Marked as no ( not supported )

Expected results:

Marked as yes ( be supported )

Comment 1

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

The severity field is not set for this bug.
:tthibaud, could you have a look please?

For more information, please visit BugBot documentation.

Comment 2

[Paul Adenot (:padenot)]

Alastor, do we have any plans for this?

Comment 3

[Alastor Wu [:alwu]]

On Android we use MediaDRM, and it seems clearkey is supported. I will let John answer this question.

Comment 4

[John Lin [:jhlin][:jolin]]

In current implementation, only Widevine is supported. Kilik listed some reasons why clearkey wasn't supported using MediaDrm, but I think are mostly invalid now, except for

3. InitDataType "keyids" is not supported by AOSP libdrmclearkeyplugin.so.

which needs further investigation.

Comment 6

[Alastor Wu [:alwu]]

As clearkey is listed as a mandatory key system in the spec, we should probably fix this either H2 this year, or H1 next year, change its priority.

Comment 7

[Jim Mathies [:jimm]]

This should not be prioritized as part of webcompat. ClearKey is largely used for testing purposes, it isn't leveraged by streaming web sites.

Comment 8

[Jan Honza Odvarko [:Honza] (always need-info? me)]

This appears to be a real issue and is blocking site report (bug 1921715, where the diagnosis indicates that it is using ClearKey)
If this is not the case, we should deprioritize the issue.

Dennis, could you please provide more details? Thank you!

Comment 9

[Jim Mathies [:jimm]]

Hey John, can we support this on Android?

Comment 10

[Dennis Schubert [:denschub]]

(In reply to Jan Honza Odvarko [:Honza] (always need-info? me) from comment #8)

Dennis, could you please provide more details? Thank you!

Yeah, it looks like eurosport.de uses this, according to that bug. I can't actually verify this - if Eurosport is using ClearKey and video playback is broken because of us not supporting it, then this is a valid WebCompat platform bug. If Eurosport is broken because of something else, we can remove the tracking here.

Comment 11

[John Lin [:jhlin][:jolin]]

There are two ways to support ClearKey on Android:

1. use Android system ClearKey plugin like what we did for Widevine L3 support.
2. enable Gecko ClearKey CDM like desktop platforms do.

Bug 1267141 comment 13 pointed out some cons of 1. and I think some are already out of date now. However, the latest Android ClearKey plugin still support only cenc scheme but not cbcs, so it still doesn't work as well as Gecko ClearKey CDM. Chrome doesn't use Android implementation either.

Comment 12

[John Lin [:jhlin][:jolin]]

Per offline discussion, bug 1970152 will enable Android system ClearKey plugin and we'll check if there is any compatibility issues.