Open Bug 1957360 Opened 3 months ago Updated 1 month ago

go.skillbox.ru - Firefox is not supported when playing videos

Categories

(Web Compatibility :: Site Reports, defect, P2)

Product:
Web Compatibility
Component:
Site Reports
Platform:
ARM
Android
Type:
defect

Tracking

(Webcompat Priority:P2, Webcompat Score:6, firefox137 affected, firefox138 ?, firefox139 unaffected)

Project Flags:
Webcompat Priority P2
Webcompat Score 6
Tracking Flags:
Tracking Status
firefox137 --- affected
firefox138 --- ?
firefox139 --- unaffected

People

(Reporter: rbucata, Unassigned)

References

(Depends on 1 open bug,
URL
)

Details

(Keywords: webcompat:have-login, webcompat:platform-bug, webcompat:site-report, Whiteboard: [webcompat-source:web-bugs])

User Story

platform:android
impact:site-broken
configuration:general
affects:all
branch:release
user-impact-score:500

Attachments

(1 file)

Chr vs FF Android
241.35 KB, image/png
Details

Environment:
Operating system: Android 14
Firefox version: Firefox Mobile 136.0

Preconditions:
Valid account created

Steps to reproduce:

  1. Navigate to: https://go.skillbox.ru and perform account login
  2. Access: https://go.skillbox.ru/profession/profession-webdev-php-3-0/javascript-1/videolesson/9510949e-070a-4d71-8d26-9331e61a6bb9
  3. Click on the "Play button" located inside
  4. Observe

Expected Behavior:
The video plays

Actual Behavior:
Unsupported warning message displayed inside video placeholder

Notes:

  • Reproduces regardless of the status of ETP
  • Reproduces in firefox-nightly, and firefox-release
  • Does not reproduce in chrome or in Desktop

Created from https://github.com/webcompat/web-bugs/issues/150192

Attached image Chr vs FF Android —
status-firefox137: --- → affected
status-firefox139: --- → unaffected
Severity: -- → S2
User Story: (updated)
Webcompat Priority: --- → P2
Webcompat Score: --- → 7
Depends on: firefox-not-supported
Keywords: webcompat:needs-diagnosis
Priority: -- → P2
Webcompat Score: 7 → 6

Since the status is marked as unaffected for nightly and as affected for release, is it unaffected or affected for beta?
For more information, please visit BugBot documentation.

status-firefox138: --- → ?

A free account can be created to test this. Even if you can't access the specific video on such an account, any video presents a "DRM system is not supported" message:

DrmError: Unsupported => Shaka Error 6001 => cause: shaka.util.Error {
  "code": 6001,
  "data": []
}

It appears that they're using ClearKey:

<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011" type="static" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:clearkey="http://dashif.org/guidelines/clearKey" minBufferTime="PT4.000S" mediaPresentationDuration="PT24M54.480S">
  <Period>
     <AdaptationSet mimeType="video/mp4" segmentAlignment="true" startWithSAP="1" maxWidth="1920" maxHeight="1080">
    <ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cbcs" cenc:default_KID="436f3066-4165-6d6b-364b-776c47526b3d" />
     <ContentProtection value="ClearKey1.0" schemeIdUri="urn:uuid:e2719d58-a985-b3c9-781a-b030af78d30e">
       <clearkey:Laurl Lic_type="EME-1.0">https://license.kinescope.io/v1/vod/46703f7a-66bc-40c7-b038-1be3e52edbb2/acquire/clearkey?token=</clearkey:Laurl>
      </ContentProtection>

So it looks like it's another case of bug 1900626. We can't site patch this, and there likely isn't anything the site can do, either.

User Story: (updated)
Webcompat Score: 6 → 7
Depends on: 1900626
No longer depends on: firefox-not-supported
Keywords: webcompat:needs-contact, webcompat:needs-sitepatch → webcompat:have-login, webcompat:platform-bug
Webcompat Score: 7 → 6
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