Zoom meeting WebSDK video slows down and freezes

Description
We integrated Zoom WebSDK 1.9.9 currently.
Our concern is that when some of the cameras are on, the videos will sometimes freeze and delayed sometimes for a 1-5 seconds. Specialy on MacOS Chrome browser

Testing:

Windows (Chrome) = Sometimes video slows down
MacOS (Chrome) = Sometimes video freezes and slows down
MacOS (Safari) = currently not used as there where still some issues with it with the lower versions

#of attendees on testing
even 2 videos/camera (1 host 1 attendee) = will still slow down and freezes

Which Web Meeting SDK version?
1.9.9

Meeting SDK Code Snippets
`
// get meeting args from url
var testTool = window.testTool;
var meetingConfig = {
apiKey: ZoomPhp.apiKey,
meetingNumber: ZoomPhp.meeting.meeting_id,
userName: (function () {
if (ZoomPhp.is_oem) {
return ZoomPhp.name;
} else {
if (ZoomPhp.name) {
try {
return testTool.b64DecodeUnicode(ZoomPhp.name);
} catch (e) {
return ZoomPhp.name;
}
}
}
})(),
passWord: ZoomPhp.meeting.pwd,
leaveUrl: ZoomPhp.prevUrl,
role: parseInt(ZoomPhp.role, 10),
userEmail: (function () {
if (ZoomPhp.is_oem) {
return ZoomPhp.email;
} else {
try {
return testTool.b64DecodeUnicode(ZoomPhp.email);
} catch (e) {
return ZoomPhp.email;
}
}
})(),
lang: ZoomPhp.lang,
signature: ZoomPhp.signature || “”,
china: 0,
};
var meeting_info = null;
if (ZoomPhp.role == 0) {
meeting_info = [
‘topic’,
‘host’,
‘participant’,
‘report’
];
}

ZoomMtg.preLoadWasm();
ZoomMtg.prepareJssdk();
function beginJoin(signature) {
  ZoomMtg.init({
    leaveUrl: ZoomPhp.prevUrl,
    webEndpoint: meetingConfig.webEndpoint,
    meetingInfo: meeting_info,
    success: function () {
      ZoomMtg.i18n.reload(meetingConfig.lang);
      ZoomMtg.join({
        meetingNumber: meetingConfig.meetingNumber,
        userName: meetingConfig.userName,
        signature: signature,
        apiKey: meetingConfig.apiKey,
        userEmail: meetingConfig.userEmail,
        passWord: meetingConfig.passWord,
        success: function (res_join) {
            checkIfAlreadyJoined();
            ZoomMtg.getCurrentUser({
                success: function(e) {
                    window.ZoomMtg_currentUser = e.result.currentUser;
                }
            });
        },
        error: function (res) {
            // console.log(['DEBUG', res]);
        },
      });
    },
    error: function (res) {
        // console.log(['DEBUG', res]);
    },
  });

  ZoomMtg.inMeetingServiceListener('onUserJoin', function (data) {
        setTimeout(function(){
            ZoomMtg.getAttendeeslist({
                success: function(e) {
                    if (e.result.attendeesList != undefined) {
                        document.querySelector('body').setAttribute("zoom-users", e.result.attendeesList.length);
                    }
                }
            });
        }, 500);
  });

  ZoomMtg.inMeetingServiceListener('onUserLeave', function (data) {
        setTimeout(function(){
            ZoomMtg.getAttendeeslist({
                success: function(e) {
                    if (e.result.attendeesList != undefined) {
                        document.querySelector('body').setAttribute("zoom-users", e.result.attendeesList.length);
                    }
                }
            });
        }, 500);
  });

  if( navigator.userAgent.match(/Android/i)
    || navigator.userAgent.match(/webOS/i)
    || navigator.userAgent.match(/iPhone/i)
    || navigator.userAgent.match(/iPad/i)
    || navigator.userAgent.match(/iPod/i)
    || navigator.userAgent.match(/BlackBerry/i)
    || navigator.userAgent.match(/Windows Phone/i)) {
        document.querySelector('body').classList.add('on-mobile');
    }
}

beginJoin(ZoomPhp.signature);`

Screenshots
If applicable, add screenshots to help explain your problem.

Device (please complete the following information):

Windows
Device name DESKTOP-J84RJL2
Processor Intel(R) Core™ i5-4460 CPU @ 3.20GHz 3.20 GHz
Installed RAM 8.00 GB (7.88 GB usable)
Device ID 78052811-7F89-4AF9-9893-0796A5DAF248
Product ID 00330-80000-00000-AA899
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Mac
Model Name: MacBook Air
Model Identifier: MacBookAir7,1
Processor Name: Intel Core i5
Processor Speed: 1.6 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Memory: 4 GB
Boot ROM Version: 188.0.0.0.0

Note: where not really concern about what device we are using cause we also tested on higher ends devices with much more processing capability but still the video freezes and slows down.

Looks like the same problem as reported here

Seems to be a regular & increasing issue over the last days/week but especially visible on 23/24 november.

1 Like

Hey @dannyJack,

Thank you for reaching out to the Zoom Developer Forum. This does seem to be the same issue mentioned by @nvivot. Are you still encountering this issue or was it during the time period referenced?

I’ve followed up with our engineering team and will update the following forum post with further details:

Thanks,
Max

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