Closed Bug 1816482 Opened 1 year ago Closed 1 year ago

Green flicker seen in received video on windows

Categories

(Core :: WebRTC, defect, P4)

Desktop
Windows
defect

Tracking

()

RESOLVED FIXED
112 Branch
Tracking Status
firefox-esr102 --- unaffected
firefox110 --- wontfix
firefox111 --- wontfix
firefox112 --- fixed

People

(Reporter: dbaker, Assigned: dbaker)

References

(Regressed 1 open bug, Regression)

Details

(Keywords: regression)

Attachments

(1 file)

Still working on understanding STR but occasionally the received video of a participant in a group call will flash with a green screen (decode error?). This has been observed when testing calls in Whereby.

:dbaker, thank you for reporting! Can you attach about:support to this bug? And can you write a specific STR to reproduce the problem?

Flags: needinfo?(dbaker)
Regressed by: 1753373

STR:

  • Windows device
  • Join a video chat (I've been using whereby.com) with others in the call
  • Select to share screen
  • Observe video

Actual Result: Occasionally the incoming video from other participants will flash green and stutter.

Expected Result: Incoming video should be played without the occasional green flash and stuttering.

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Flags: needinfo?(dbaker)

Set release status flags based on info from the regressing bug 1753373

I tried to reproduce the problem, but the green flicker did not happen. Though I confirmed that D3D11ShareHandleImage::MaybeCreateNV12ImageAndSetData() was called in RDD process.

I looked int source code. D3D11ShareHandleImage::MaybeCreateNV12ImageAndSetData() might need to handle lock like D3D11YCbCrImage::SetData().

:dbaker, can you check if D171056 address the problem?

Flags: needinfo?(dbaker)

I tested this patch and it does not resolve the issue with the occasional stutter and green flash.

Flags: needinfo?(dbaker) → needinfo?(sotaro.ikeda.g)

Thank you for checking. Can you get Firefox profiler when the problem happens with "Graphics" setting and "Media" setting?

Flags: needinfo?(sotaro.ikeda.g) → needinfo?(dbaker)

https://share.firefox.dev/3KQcBnk - Media saw a green flash and stuttering off and on.
https://share.firefox.dev/41z646L - Graphics saw stuttering no luck seeing a green flash.

Flags: needinfo?(dbaker) → needinfo?(sotaro.ikeda.g)

(In reply to Dan Baker[:dbaker] from comment #9)

https://share.firefox.dev/3KQcBnk - Media saw a green flash and stuttering off and on.
https://share.firefox.dev/41z646L - Graphics saw stuttering no luck seeing a green flash.

Thank you. The profiler data seemed not have a problem.

Flags: needinfo?(sotaro.ikeda.g)

:dbaker, D171056 is updated, can you check if the update patch address the problem?

Flags: needinfo?(dbaker)

I no longer see stuttering or green flashes with this latest change. These latest changes seem to have resolved the issue I was able to reproduce.

Flags: needinfo?(dbaker) → needinfo?(sotaro.ikeda.g)

Great! Thank you.

Flags: needinfo?(sotaro.ikeda.g)
Attachment #9319958 - Attachment description: WIP: Bug 1816482 - Add lock handling to D3D11ShareHandleImage::MaybeCreateNV12ImageAndSetData() → Bug 1816482 - Add lock/sync handling to D3D11ShareHandleImage::MaybeCreateNV12ImageAndSetData()
Pushed by sikeda.birchill@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/e59361fff381
Add lock/sync handling to D3D11ShareHandleImage::MaybeCreateNV12ImageAndSetData() r=gfx-reviewers,lsalzman
Status: ASSIGNED → RESOLVED
Closed: 1 year ago
Resolution: --- → FIXED
Target Milestone: --- → 112 Branch
Blocks: 1816026
QA Whiteboard: [qa-112b-p2]
Regressions: 1820045
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