Open Bug 1954846 Opened 7 months ago

The media.getusermedia.camera.off_while_disabled.enabled pref is leaked

Categories

(Core :: WebRTC: Audio/Video, defect)

Product:
Core
Component:
WebRTC: Audio/Video
Type:
defect

Tracking

()

People

(Reporter: jib, Unassigned)

Details

Here's a fiddle that allows changing constraints on a track while it's disabled https://jsfiddle.net/jib1/sbj1q6ko/

It shows that Firefox's behavior could be improved to update its settings to be within constraints immediately instead of waiting until the device comes back online (basically we're leaking that the pref is on).

STR:

  1. Open it and hit the Go! button
  2. Observe that it shows (or adjust it to) a high resolution, something like track 1280x720x30 (video 1280x720x30)
  3. Uncheck the ☑ enabled checkbox
  4. Drag the "height" slider down to ~480

Expected result:

  • It changes to show track 640x480x30 (video 1280x720x30) immediately

Actual result:

  • Unchanged e.g. it still reads track 1280x720x30 (video 1280x720x30.08)
  • Once you re-check the ☐ enabled checkbox, it changes to track 640x480x30 (video 640x480x30)

Workaround:

  • In about:config, set media.getusermedia.camera.off_while_disabled.enabled to false
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