1703668 - [meta] Google Meet lacks "Change Background" feature to add a background/blur to video stream

Status: RESOLVED FIXED

(Web Compatibility :: Site Reports, defect, P1)

Description

[bogas04]

Attachment: brave-vs-firefox.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36

Steps to reproduce:

1. Open https://meet.google.com/ on Firefox
2. Login and join/create a new meeting
3. Look for "Change background" option

Actual results:

Video stream works correctly but there's no change background option. Even if you use User Agent Switcher to spoof Chrome/Brave/Edge, it still doesn't work.

Expected results:

You should see "Change background" option to add blur/backgrounds.

Comment 1

[Lars T Hansen [:lth]]

SIMD might be involved but is feature-complete and enabled by default in FF Nightly; if SIMD detection is all there's to it then this should not be a problem on Nightly. So something else is likely going on.

(I was going to say that meet is possibly also sniffing the client more carefully, since SIMD hasn't shipped in either Chrome or Firefox and Google Meet is using simd on Chrome under an Origin Trial setup, but I would not think that Brave would be allowed to opt in to the Origin Trial necessarily, so maybe that's not a factor.)

Possibly something for the webcompat people to look at / triage first. They have already done some digging, https://webcompat.com/issues/62428, which suggests we're simply being served different code.

Comment 2

[bogas04]

Tried on Firefox Nightly 89.0a1 (2021-04-07) (64-bit) with javascript.options.wasm_simd=true & javascript.options.wasm_simd_wormhole=true and even with User Agent as that of Chrome. None of these fixed the issue. So there's some much more convoluted feature detection in place in that case.

Comment 3

[Karl Dubost💡 :karlcow]

Attachment: After start a meeting on meet.google.com

It's not possible to test with a simple user agent override even on RDM.

• Login in is not possible with Firefox and Chrome UA. Google will reject saying there is an issue. So it is necessary to login with Firefox UA (and this already mean we partly screw the results of the experiment.)
• Let's log in. Then activate the RDM profile for Chrome.
• Create an instant meeting with the option new meeting. It will reply with an error message and a full log of errors. So it's not possible to test that way either.

09:40:32.041 Navigated to https://meet.google.com/_meet/pdn-fqqx-epm?ijlm=1618188031671&adhoc=1&hs=187
09:40:32.267 Cookie “SIDCC” has “SameSite” policy set to “Lax” because it is missing a “SameSite” attribute, and “SameSite=Lax” is the default value for this attribute. pdn-fqqx-epm
09:40:32.411 WARNING! m=_b,_tp:537:253
09:40:32.412 Using this console may allow attackers to impersonate you and steal your information using an attack called Self-XSS.
Do not enter or paste code that you don't understand. m=_b,_tp:537:253
09:40:33.367 The Notification permission may only be requested from inside a short running user-generated event handler. pdn-fqqx-epm
09:40:33.921
Uncaught (in promise) TypeError: RTCPeerConnection.getStats: Argument 1 does not implement interface MediaStreamTrack.
m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:2761:496
09:40:34.013
Uncaught (in promise) Error: [fatal/backend: {"oa":{"1":{"oa":null,"Oa":-1,"Ba":[4,null,null,"-3321865817512464241",1618188033994],"Qa":1.7976931348623157e+308,"Ta":{}}},"Ea":"chselrp","Oa":0,"Ba":["chselrp",[4,null,null,"-3321865817512464241",1618188033994]],"Qa":1.7976931348623157e+308,"Ta":{}}]
m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:2157:332
09:40:34.706 Cookie “SIDCC” has “SameSite” policy set to “Lax” because it is missing a “SameSite” attribute, and “SameSite=Lax” is the default value for this attribute. trigger
09:40:35.976
Uncaught (in promise) DOMException: Cannot set remote answer in state stable m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:2764
09:40:35.977
Uncaught (in promise) Error: DisconnectedError, EndCause = 19
m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:6158:228
09:40:35.977
Uncaught (in promise) Error: DisconnectedError, EndCause = 19
m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:6158:228
09:40:35.977
Uncaught (in promise) Error: DisconnectedError, EndCause = 19
m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:6158:228
09:40:35.977 Uncaught (in promise) Error: DisconnectedError, EndCause = 19
m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:6158:228
09:40:35.977 Uncaught (in promise) Error: DisconnectedError, EndCause = 19
m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d,V3dDOb,XU5LFb,hl,rrm,c6KVyc,jKHFJb,mI3LFb,WO9ee,T6U9J,lHoXXe,SFhYHb,rsr,oFF0ab,sVRBvb,AePfdf,DCwKHe,RqS4qe,t8N1l,nUMwj,zmuYmd,mibVie,syIdOe,k2r0oe,OoSMve,FMq9Lb,Bmvled,KdcBrc,O6y8ed,NpD4ec,PrPYRd,O4tzsb,iWP1Yb,MpJwZc,O8k1Cd,NwH0H,OmgaI,HLo3Ef,x60fie,xiqEse,MsyKad,lazG7b,ma,kXiGjb,khenvb,azqyEc,W4cEdc,tQz2Ve,XVMNvd,L1AAkb,KUM7Z,rE6Mgd,Fl2dbf,fFdwef,GcAaod,rn9YO,Y0bgVb,s39S4,lwddkf,gychg,w9hDv,RMhBfe,tgTcU,qCSYWe,lAg79c,TH1Apc,Ryzncf,SdcwHb,aW3pY,YLQSd,PQaYAf,P1S3zf,DM8swd,pw70Gc,zOASve,EFQ78c,Ulmmrd,ZfAoz,Ivl8bd,mdR7q,kmkrAf,PGW6ue,CBlRxf,MdUzUe,I6YDgd,N5Lqpc,fgj8Rb,xQtZb,lPKSwe,y4Nztd,QIhFr,JNoxi,texUgd,MI6k7c,kjKdXe,pB6Zqd,llTWPd,FYCkde,rHjpXd,yDVVkb,EcLnpd,SF3gsd,FSOnAf,cilABe,jdrlZe,qexExd,DNsE7e,wfcdnd,swpmp,gtEOic,xGC4Gb,QBFzrf,wiZ2v,hKSk3e,oUdseb,WWLNXd,sPwFo,iTsyac,Rsjrje,hc6Ubd,rNa50e,dWHZee,r3O6kf,CpMwL,Tnlgmf,DPQwOe,DDvSYd,CvtcN,KG2eXe,SpsfSb,yF5Ngd,FgkHjb,cWjcJb,Lamzc,tfTN8c,o02Jie,zthRrb,BZ8iCc,Cw0Hjd,LgZW9b,ABMzYd,OdgxHf,VwDzFe,zbML3c,vWBbe,alwr6,JECyjf,ixOrqc,dlck6b,HDvRde,Uas9Hd,BVgquf,a9EW5e,Z7OaKe,A7fCU,JGjVRe,hIO81e,UgAtXe,pjICDe:6158:228
09:40:35.977 Uncaught (in promise) 
Object { stack: "_.ha@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:4:95\n_.pg@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:153:23\n_.VL@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/ck=boq-rtc.MeetingsUi.mQGaz2q2jkU.L.B1.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/exm=LEikZe,_b,_tp,byfTOb,lsjVmc/excm=_b,_tp,calldesktoppageview/ed=1/wt=2/ct=zgms/rs=AL5CKSHAA02C1YVht2a17BXfVKIA7WqvgQ/m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d…", message: "Owner asynchronously disposed", oa: false }

09:40:35.977 Uncaught (in promise) 
Object { stack: "_.ha@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:4:95\n_.pg@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:153:23\n_.VL@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/ck=boq-rtc.MeetingsUi.mQGaz2q2jkU.L.B1.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/exm=LEikZe,_b,_tp,byfTOb,lsjVmc/excm=_b,_tp,calldesktoppageview/ed=1/wt=2/ct=zgms/rs=AL5CKSHAA02C1YVht2a17BXfVKIA7WqvgQ/m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d…", message: "Owner asynchronously disposed", oa: false }

09:40:35.977 Uncaught (in promise) 
Object { stack: "_.ha@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:4:95\n_.pg@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:153:23\n_.VL@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/ck=boq-rtc.MeetingsUi.mQGaz2q2jkU.L.B1.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/exm=LEikZe,_b,_tp,byfTOb,lsjVmc/excm=_b,_tp,calldesktoppageview/ed=1/wt=2/ct=zgms/rs=AL5CKSHAA02C1YVht2a17BXfVKIA7WqvgQ/m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d…", message: "Owner asynchronously disposed", oa: false }

09:40:35.977 Uncaught (in promise) 
Object { stack: "_.ha@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:4:95\n_.pg@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/excm=_b,_tp,calldesktoppageview/ed=1/dg=0/wt=2/ct=zgms/rs=AL5CKSFwrJoXs3txTMnynpGCHDV8AQVOKw/m=_b,_tp:153:23\n_.VL@https://meet.google.com/_/scs/mss-static/_/js/k=boq-rtc.MeetingsUi.en_GB.Vy4ZtoBRwrM.2020.O/ck=boq-rtc.MeetingsUi.mQGaz2q2jkU.L.B1.O/am=BwUAggoAoAkCph84AAQMIAoAAMAACmQHAAAgAAAA6IbiDP7PKCUAAIBWAAAAQMcAFEkACA/d=1/exm=LEikZe,_b,_tp,byfTOb,lsjVmc/excm=_b,_tp,calldesktoppageview/ed=1/wt=2/ct=zgms/rs=AL5CKSHAA02C1YVht2a17BXfVKIA7WqvgQ/m=n73qwf,ws9Tlc,IZT63,e5qFLc,GkRiKb,UUJqVe,O1Gjze,xUdipf,blwjVc,fKUV3e,aurFic,COQbmf,U0aPgd,ZwDk9d…", message: "Owner asynchronously disposed", oa: false }

There is sophisticated user agent sniffing going on in

    _.S0e = function (a) {
      return 24 === a && _.uf() && _.Qc(_.dea(), '6.1') && R0e('57') || 109 === a && R0e('56') ? 'Update Google Chrome' : _.Kid(a, 1)
    };

And the SIMD thing seems to be under origin-trial

<meta http-equiv="origin-trial" data-feature="WebAssembly SIMD" content="AqeyBSjqs4MpO+SHbpktv0jc8tH3UkmYjyIQ/qPuH9HbeSdTgbvKR3eeG+Y/ImcwYwLKGy14LLiZPtI129ag2wkAAABmeyJvcmlnaW4iOiJodHRwczovL2dvb2dsZS5jb206NDQzIiwiZmVhdHVyZSI6IldlYkFzc2VtYmx5U2ltZCIsImV4cGlyeSI6MTYyMTM4MjM5OSwiaXNTdWJkb21haW4iOnRydWV9">

hmm which means that Google is using origin trial for their own services defeating the purpose of… origin trials which is about not imposing a browser and testing a feature.

Comment 4

[Karl Dubost💡 :karlcow]

So I'm still not sure this is a dependency on SIMD (minified code and yada yada.), but there are things where you need Chrome Origin Trials to make the site work as expected with a Chrome User Agent. So it's not as simple as faking the UA to test.

Comment 5

[Lars T Hansen [:lth]]

Yeah, makes sense, thanks for investigating. (Wasm SIMD has been a long and hard road, the origin trial has been extended twice as the spec has been evolving, but both Google and we want SIMD to succeed, so putting it to use on the web has been a meaningful exercise IMO. The Origin Trial people have put their foot down for further extensions, in their defense. We're also allowing some of our own experiments to use SIMD in FF88 release, but we're not shipping until FF89.)

Comment 6

[Robert.K (please NI? :tbabos, I am no longer following bugs)]

I managed to reproduce this issue on the latest Nightly 89.0a1 on Windows 10 x64.
Marking this as NEW and setting up flags.

Comment 7

[Lars T Hansen [:lth]]

There's no evidence as of yet that this is a WebAssembly problem, see comment 3.

Comment 8

[Karl Dubost💡 :karlcow]

Let's contact Google about it. That would be more straightforward than poking in the dark.
I sent an email to mozilla-google partner mailing list.

Comment 9

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

The mozilla-google mailing list discussion revealed a previous thread with the subject "meet blurred background and firefox webgl performance" that pointed to a performance problem in WebGL, but that archived thread is no longer available. Paraphrasing from an email record of it:

Most of the time is being spent in glTexSubImage2D and glReadPixels, causing background blur to take twice as long per frame. There is potentially a way to prevent stalls there by reading previous frames, though Firefox's new out-of-process WebGL arch doesn't have this optimization yet.

Jeffrey, is there a WebGL bug for this that we can block on?

Comment 10

[Kelsey Gilbert [:jgilbert]]

Filed bug 1716386 for the time we're seeing in ReadPixels, but it would require refactoring in the Meet app. Details on the approach are linked from that bug, but the main doc is here: https://jdashg.github.io/misc/async-gpu-downloads.html (it's about using PBO-ReadPixels and fences) If the app were using this approach already, profiling would show us spending time in getBufferSubData or glMapBufferRange. Without changes to Meet this won't help.

I don't think a naive blocking ReadPixels has any non-intractable slowpaths, but we can always double-check.

This needs a profile we can analyze. There's probably a slowpath being hit for TexSubImage, though we try to print warnings to the console when we hit slowpaths there.

Comment 11

[Kelsey Gilbert [:jgilbert]]

I have requested a way to force-enable this for testing from the Meet team over email.

Comment 12

[Kelsey Gilbert [:jgilbert]]

My initial profile here doesn't seem to show anything abysmal, and perf seems acceptable on this machine. (admittedly a beefy machine)

https://share.firefox.dev/3vBHWyR

• 4.7% texImage2D
  • 1.6+0.7=2.3% PlanarYCbCrImage::GetAsSourceSurface
    • 1.3%+0.7=2.0% mozilla::gfx::ConvertYCbCrToRGBInternal
  • 1.5+0.7=2.2% mozilla::ClientWebGLContext::Run
    • 1.5+0.7=2.2% memcpy
• 3.0+6.0=9.0% readPixels
  • 9.0% PWebGL::Msg_ReadPixels blocking

I will try on a slower machine.

Comment 13

[Kelsey Gilbert [:jgilbert]]

I seem to remember fixing a perf bug in either uploads or downloads, so it's also possible that perf is better now than it was when the Meet team last did perf validation testing.

Comment 14

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

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 15

[Andrew McCreight [:mccr8]]

Maybe this should be filed under web compat? Anyways, I don't think A/V Playback is the right component, because it sounds like this feature is intentionally disabled, and it is due to some graphics or WebAssembly processing issue.

Comment 16

[Mathew Hodson]

I agree this should be moved to the Web Compatibility component. We can also add https://github.com/webcompat/web-bugs/issues/62428 to the See Also field and add bug 1431543 to the Blocks field.

Comment 17

[Kagami Rosylight [:saschanaz] (they/them)]

Attachment: dialog

Google Meet now shows an explicit dialog that background effect is not supported on Firefox.

Comment 18

[Kelsey Gilbert [:jgilbert]]

A profile on a slower machine: https://share.firefox.dev/3ozP9zT

Comment 19

[Kelsey Gilbert [:jgilbert]]

We spend 21+25=46% of the time on Content in PWebGLChild::SendReadPixels, however only 29% on GPU process in PWebGLParent::RecvReadPixels. This might actually be due to the other work sent ahead asynchronously. I expect to see the Content time for SendReadPixels get smaller if we optimize e.g. texture upload.

It's worth checking why fast gpu-gpu video upload path isn't being hit here.

If we can't hit the gpu-gpu fastpath here, there's 11% of time spent in ConvertImage under TexImage here: https://searchfox.org/mozilla-central/source/dom/canvas/TexUnpackBlob.cpp#464
We also convert the yuv video frame into a BGRX SourceSurface, which we then memcpy into serialization memory. We might be able to convert directly into serialization memory, which would save 7% here.
These should both help a bunch if we make them faster.

Comment 20

[Kelsey Gilbert [:jgilbert]]

Another opportunity here might be to use async gpu downloading in mozilla::dom::RequestedFrameRefreshObserver::WillRefresh. I see that we can provide both data and a time for the frame, so if we pipeline downloading frames from the gpu, that could improve throughput at cost of latency. With frames marked with times, we shouldn't have audio-video-desync, just an extra frame of latency, which should be fine for this sort of thing.

Comment 21

[Kelsey Gilbert [:jgilbert]]

We're not hitting the gpu-gpu fastpath because this is a planaryuv Image with a shmem texture client.
Given this as input, the fastest possible code would push the shmem along to the webglparent process, which would upload the yuv planes, and then gpu-gpu convert them.

Comment 22

[Jeff Muizelaar [:jrmuizel]]

Here's a profile of the gpu thread of Chrome that might be useful: https://share.firefox.dev/3Dp48AR. Note: it doesn't include any time that a thread was waiting so it may be hard get a sense for how much time is being spent waiting for readpixels/fences etc.

Comment 23

[Jeff Muizelaar [:jrmuizel]]

Also, that profile has meet blur being turned and off so I'm not sure during which parts the blur is actually running.

Comment 24

[Matt Woodrow (:mattwoodrow)]

(In reply to Jeff Gilbert [:jgilbert] from comment #20)

Another opportunity here might be to use async gpu downloading in mozilla::dom::RequestedFrameRefreshObserver::WillRefresh. I see that we can provide both data and a time for the frame, so if we pipeline downloading frames from the gpu, that could improve throughput at cost of latency. With frames marked with times, we shouldn't have audio-video-desync, just an extra frame of latency, which should be fine for this sort of thing.

It looks like we do a readback of the WebGL <canvas> contents, copy them (which seems unnecessary, since the readback should be pixel data we can just take ownership of), and then construct a layers::Image around that new surface.

Could we just instruct the remote side to do a gpu->gpu copy (asynchronously), and return a reference to this remote GPU texture? This is basically what we're doing already with GPUVideoImage, so hopefully that could be reused in part.

If the layers::Image is then passed into the video rendering pipeline, then the compositor can resolve the remote reference without any readback (again, like remote decoded video frames). If the consumer really does want pixel access in the content process, then the readback can be requested on the GPUVideoImage (and be slow).

Comment 25

[Kelsey Gilbert [:jgilbert]]

To be clear, I'm talking about https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/captureStream , and not downloading pixels for sending to the screen. (which we're pretty good at avoiding) Would our capture pipeline be able to deal with gpu-side resources?

Comment 26

[Matt Woodrow (:mattwoodrow)]

(In reply to Jeff Gilbert [:jgilbert] from comment #25)

To be clear, I'm talking about https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/captureStream , and not downloading pixels for sending to the screen. (which we're pretty good at avoiding) Would our capture pipeline be able to deal with gpu-side resources?

I think it really depends on where the output of the stream is directed and whether that output needs the pixel data synchronously (or at all).

It looks like you can use streams to output into a video element, or draw into a different canvas, so for those use cases it would be a big win.

I'm assuming this case is sending the stream into WebRTC, which will still require the readback (but hopefully async like you suggested).

In general, deferring the readback until we know what the consumer needs seems like a win.

Comment 27

[Kelsey Gilbert [:jgilbert]]

@pehrsons: Do you know if the capture/encode code can handle this sort of latency in providing frames?

Comment 28

[Andreas Pehrson [:pehrsons]]

Sure, as long as the frames come with proper timestamps both MediaRecorder and RTCPeerConnection will handle them properly. The former buffers audio as needed in the Muxer to stay in sync, and the latter will handle it in the remote side's jitter buffer. For the latter we might have to ensure those timestamps are plumbed through properly. Should be straight forward.

Looks like we already use the time from WillRefresh, so if we let that ride along with the async request we should be good.

And we'll want to be sure the frames are delivered in the right order, or we will end up skipping stuff when time appears to go backwards. If, say, the canvas is significantly reduced in size, I suppose an async small download could race with the previous large one?

Comment 29

[Andreas Pehrson [:pehrsons]]

I should also note that there is HTMLMediaElement.captureStream that can also pipe video to webrtc. If those video frames are backed by gpu buffers we could again end up doing sync readbacks. If we are putting in the work to do async readbacks, it'd be great if we could cover both these (canvas + media elements) cases.

Comment 30

[Kelsey Gilbert [:jgilbert]]

Attachment: Bug 1746111 - (Re)serialize WebRTC frame SurfaceDescriptorBuffers for convert-and-upload on WebGLParent.

Also generally de-inline (WebGLParent::TexImage not DispatchCommand)
TexImage(SurfaceDescriptor).

Comment 31

[Kelsey Gilbert [:jgilbert]]

Attachment: webrtc->webgl upload testcase: video-upload.html (snapshot of https://jdashg.github.io/misc/webgl/video-upload.html)

Comment 32

[Phabricator Automation]

Comment on attachment 9253708 [details]
Bug 1746111 - (Re)serialize WebRTC frame SurfaceDescriptorBuffers for convert-and-upload on WebGLParent.

Revision D132851 was moved to bug 1746111. Setting attachment 9253708 [details] to obsolete.

Comment 33

[Kelsey Gilbert [:jgilbert]]

Since this fix might be only part of the solution, I've moved it to its own bug: bug 1746111

Comment 34

[Raul Bucata]

I was able to reproduce the issue. The "Apply visual effects" option is not supported. See also: https://support.google.com/meet/answer/10058482?hl=en&expand_all_zippies=true#requirements&zippy=%2Crequirements-to-apply-visual-effects-on-computer

Tested with:

Browser / Version: Firefox Nightly 98.0a1 (2022-01-31) (64-bit)
Operating System: Mac OSX 10.15.6

Awaiting further investigations

Comment 37

[Jim Mathies [:jimm]]

Adding the offscreen canvas tracker since that will probably help with performance as well once we ship it.

Comment 38

[Anna Yeddi [:ayeddi]]

Attachment: Profile 1. Firefox testing with NVDA on Win11 2022-03-22 11.51 profile.json.gz

Tested the blurring feature on Windows 11 with stable Firefox 98.0.1 (64-bit) and NVDA 2021.3.4 screen reader.

NVDA was started before the browser as a standard use case. No performance issues were noticed while activating either of blurring background options and navigating using keyboard alone within the Video Effects dialog while blurring was active. Jumping to another control did interrupt the previous announcement and started a new one without any hiccups. Did not mention any major issues with it.

3 captured profiles are attached. Let me know if you have any questions.

Comment 39

[Anna Yeddi [:ayeddi]]

Attachment: Profile 2. Firefox testing with NVDA on Win11 2022-03-22 11.53 profile.json(1).gz

Comment 40

[Anna Yeddi [:ayeddi]]

Attachment: Profile 3. Firefox testing with NVDA on Win11 2022-03-22 11.53 profile.json(2).gz

Comment 41

[Jim Mathies [:jimm]]

Hey Anna, can you post your about support text for reference?

Comment 42

[Anna Yeddi [:ayeddi]]

(In reply to Jim Mathies [:jimm] from comment #41)

Hey Anna, can you post your about support text for reference?

Sure - provided below:

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Comment 43

[James Teh [:Jamie]]

Here's another profile with Meet + the JAWS screen reader from Asa.
The profile shows jank, although Asa said it wasn't noticeable. However, perhaps it would be different on another machine/situation.

Right now (without our in-progress Cache the World refactor), a11y queries are often sync from the parent process. Content spends quite a bit of time in a sync IPDL call to PWebGL::ReadPixels. That would explain why the content process is blocked, which in turn explains why the parent process is blocked waiting for sync a11y queries to respond.

I just recalled that bug 1273635 modified the main IPC channel so that a11y queries could still be handled by the content main thread even while it was waiting for a response to a sync IPDL call to parent. This was done to mitigate deadlocks. This doesn't appear to be used in this case. I'm not super familiar with the guts of IPDL, but my guess is that PWebGLChild uses a different IPC channel (since it's talking to a different process) and we don't set the MessageChannel::REQUIRE_A11Y_REENTRY flag on that channel.

Although a deadlock isn't a concern here (because this sync call is being sent to the compositer, not the main parent process), allowing a11y re-entry would mean that a11y calls don't get blocked, which in turn means the parent process would be blocked less, hopefully decreasing jank. This is only possible on Windows because a11y uses COM instead of sync IPDL there, but Windows is where we're seeing pain here anyway. It's worth flagging that this is a terrible hack and it's not going to solve this completely, but it might help enough until we can ship Cache the World.

I'm not sure if there are any possible nasty side effects of turning this on for this IPC channel. I don't think there should be, but it's definitely something to consider.

I'm not sure how the lifecycle for gfx IPC stuff works, but this flag should probably be set somewhere in CanvasManagerChild, perhaps here.

We'd set this the same way we set it for PContent:

#if defined(XP_WIN) && defined(ACCESSIBILITY)
  GetIPCChannel()->SetChannelFlags(MessageChannel::REQUIRE_A11Y_REENTRY);
#endif

Comment 44

[Oana Arbuzov [:oanaarbuzov]]

This is still an issue.
https://prnt.sc/tUESEZ7m8APf

Tested with:
Browser / Version: Firefox Nightly 103.0a1 (2022-06-26)
Operating System: Windows 10 Pro

Comment 45

[enachi.sergiu]

still, actual on FF 102.0.1 (64-bit)
Build ID 20220705093820
Operating System: Windows 10 Pro

Comment 46

[Dennis Schubert [:denschub]]

Please don't needinfo folks randomly, especially not in cases where we know that an issue still exists (see the previous comment), and when you don't actually need information from me.

Comment 47

[sam.n.lucas]

Still present on 105.0.1 (64-bit, build 20220922151854) both OSX 12.6 and Windows 11

Comment 48

[travneff]

There is mention of force-enable this for testing - do we have such an option?
I mean, can I somehow force Meet to enable blur in FF? Even with very bad performance, if so

Comment 49

[Kelsey Gilbert [:jgilbert]]

You might be able to spoof a non-Firefox UserAgent string, but I'm unsure if that would break anything else on the site.

Comment 50

[travneff]

Yes, I tried that and it fixes nothing and breaks additional things.
You mentioned a way to force-enable this for testing in comment 11, it would be a good thing if exists

Comment 51

[piradata]

Should not this be a higher priority bug? I know about a lot of people that have migrate to google chrome just because they use google meets for work and it is inconvenient to be changing browser just to have a meeting and come back.

Also, is there something i can do to help solve this bug? This one and the one from Bug 1558475 where the ones that always bugged me more related to web meetings...

Comment 52

[harald]

Setting the UA string to Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 via general.useragent.override in about:config allows me to apply visual effects to my camera.

Firefox 113.0b7 (64-bit)

Comment 53

[Calum]

@harald Afraid for me switching here UA didn't work (Ubuntu on Intel laptop). Tried with Firefox 112 and joining call redirects to error page with Couldn't start the video call because of an error then with 113 beta a slightly different error You can't join this video call. Perhaps this is progress?

It really would be great if this could be made to work!

Comment 54

[Ksenia Berezina [:ksenia]]

Dennis, could you please take a look?

Comment 55

[philippe.latulippe]

I have just tested visual effects on Google Meet using Firefox 113.0 from the beta channel, and the effects work very well. No noticeable issues and great performance. This was on macOS Monterey using a Chrome for macOS user-agent string.

Changing the user agent string triggers other bugs in Google Meet that break most of its UI, but the multimedia aspects work fine. To work around the broken UI, I entered the URL to an existing meeting and set the visual effects in the preview screen, before entering the room.

Comment 56

[Kelsey Gilbert [:jgilbert]]

We are engaged with Google on how to get this enabled, and there's nothing else here we're blocked on at this time.

Comment 57

[Dennis Schubert [:denschub]]

Setting this as a P1. There is nothing on our side to be done here at the moment, but it's an important issue that we get lots of reports for, so we'd like to keep this high on our list.

Comment 58

[James Teh [:Jamie]]

(In reply to James Teh [:Jamie] from comment #43)

Right now (without our in-progress Cache the World refactor), a11y queries are often sync from the parent process. Content spends quite a bit of time in a sync IPDL call to PWebGL::ReadPixels. That would explain why the content process is blocked, which in turn explains why the parent process is blocked waiting for sync a11y queries to respond.

Cache the World (the new a11y architecture) is enabled by default as of Firefox 113, so a11y should no longer be a blocker here.

Comment 59

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

The severity field for this bug is set to S3. However, this bug has a P1 WebCompat priority.
:denschub, could you consider increasing the severity of this web compatibility bug?

For more information, please visit BugBot documentation.

Comment 60

[Dennis Schubert [:denschub]]

Settings P1/S1 as per the bot's nag to match our webcompat-priority=P1. We might have to unset the release tracking flags in order to avoid people getting RelMan-nags, but let's leave them for now.

Just to be clear here, we have confirmation that there is nothing to be done on our end here. All known performance issues have been resolved, and we don't have no new known blockers at this time. If this changes, we'll update this bug accordingly.

Comment 61

[Dennis Schubert [:denschub]]

I... did not mean to ask for release tracking. In fact, this was the exact opposite of what I wanted to do. Apologies.

Comment 62

[Can:caniko]

I am just curious, why not just create an extension that inserts these background to the video feed, and not deal with the proprietary Google interface. Does this extension exist? I feel this rabbit hole is a waste of engineer resources (probably just me).

Comment 63

[kameili]

Is there any news about this? comment 56 filled me with hope.

Comment 65

[Nils Toedtmann]

Yesterday, the "Visual effects" in a Google Meet were suddenly available in my Firefox, and it worked just fine.
Today, it got back to the old "This browser does not support visual effects".
I suspect Google have started A/B testing visual effects Firefox. Let's hope they release it for all clients soon.

Using Ubuntu-packaged FF 116.0.2 on Ubuntu 20.04.

Comment 66

[Jim Mathies [:jimm]]

(In reply to Nils Toedtmann from comment #65)

Yesterday, the "Visual effects" in a Google Meet were suddenly available in my Firefox, and it worked just fine.
Today, it got back to the old "This browser does not support visual effects".
I suspect Google have started A/B testing visual effects Firefox. Let's hope they release it for all clients soon.

Using Ubuntu-packaged FF 116.0.2 on Ubuntu 20.04.

This is correct, Google is currently rolling out a set of experiments. No major red flags thus far, so hopefully this will be in GA soon.

Comment 67

[Julius B.]

This is correct, Google is currently rolling out a set of experiments. No major red flags thus far, so hopefully this will be in GA soon.

That sounds very promising. Are there more information available online about these experiments? I like to learn more, but I wasn't able to find anything.

Comment 68

[barryvan]

I haven't been able to find any information online about this change, but I have just seen these options enabled for me in Meet. They all seem to work flawlessly and smoothly without any impact on performance on my M2 13" MacBook Pro.

Comment 69

[alessandro.lai85]

(In reply to barryvan from comment #68)

I haven't been able to find any information online about this change, but I have just seen these options enabled for me in Meet. They all seem to work flawlessly and smoothly without any impact on performance on my M2 13" MacBook Pro.

Can confirm the same under Dell Latitude 7520, Ubuntu 22.04, Firefox 116.0.3 via Snap

Comment 70

[Jim Mathies [:jimm]]

They are at 10% rollout to Firefox users, going to 50% later this week. Assuming no issues this will rollout to the complete release population over the next couple weeks.

Comment 71

[Jim Mathies [:jimm]]

This hit 100% last week. If anyone is missing the option in Meet in Fx 115 or higher, please let us know.