# Web **URL:** https://devforum.zoom.us/c/video-sdk/web/31.md [Latest](https://devforum.zoom.us/latest.md) · [Categories](https://devforum.zoom.us/categories.md) · [Tags](https://devforum.zoom.us/tags.md) --- ## [About the Web category](https://devforum.zoom.us/t/about-the-web-category/35533)
**Author:** [@tommy](https://devforum.zoom.us/u/tommy)\ **Replies:** 0\ **Last updated:** [November 10, 2020, 12:18am UTC](https://devforum.zoom.us/t/about-the-web-category/35533 "2020-11-10T00:18:21Z")
Questions and answers about the Web Video SDK! Build rich-featured web apps designed to connect communities through highly customized user interfaces and access to raw video & audio data. --- ## [Zoom Video SDK session is returning null Dial-in numbers,](https://devforum.zoom.us/t/zoom-video-sdk-session-is-returning-null-dial-in-numbers/146629)
**Author:** [@Rajat02](https://devforum.zoom.us/u/Rajat02)\ **Replies:** 4\ **Last updated:** [September 26, 2026, 2:55am UTC](https://devforum.zoom.us/t/zoom-video-sdk-session-is-returning-null-dial-in-numbers/146629 "2026-09-26T02:55:50Z")
Zoom Video SDK is returning null for isSupportPhoneFeature() although Audio confrence pack is added in account. PROBLEM DESCRIPTION We are building PSTN dial-in into Video SDK sessions so a third party can join a live … --- ## [startAudio() followed by Reconnecting / failover for a subset of users](https://devforum.zoom.us/t/startaudio-followed-by-reconnecting-failover-for-a-subset-of-users/145998)
**Author:** [@k112q](https://devforum.zoom.us/u/k112q)\ **Replies:** 6\ **Last updated:** [September 24, 2026, 2:26pm UTC](https://devforum.zoom.us/t/startaudio-followed-by-reconnecting-failover-for-a-subset-of-users/145998 "2026-09-24T14:26:42Z")
Video SDK Type and Version Zoom Video SDK for Web 2.5.0 Description Some of our users are running into the following: 1. client.join() succeeds 2. stream.startAudio() is called 3. startAudio() never resolves, and s… --- ## [Zoom Video SDK session.ended Webhook: Delivery Delay and Missing Events](https://devforum.zoom.us/t/zoom-video-sdk-session-ended-webhook-delivery-delay-and-missing-events/146544)
**Author:** [@Thong1](https://devforum.zoom.us/u/Thong1)\ **Replies:** 2\ **Last updated:** [September 23, 2026, 2:52am UTC](https://devforum.zoom.us/t/zoom-video-sdk-session-ended-webhook-delivery-delay-and-missing-events/146544 "2026-09-23T02:52:22Z")
During internal testing with approximately 1,000 Video SDK sessions, we measured the average delivery latency from event\_ts until the Webhook was received by our server. Event Average delivery latency session.en… --- ## [Pre-join camera preview does not display in 16:9 aspect ratio with createLocalVideoTrack().start() (Web Video SDK v1.5.0)](https://devforum.zoom.us/t/pre-join-camera-preview-does-not-display-in-16-9-aspect-ratio-with-createlocalvideotrack-start-web-video-sdk-v1-5-0/146315)
**Author:** [@yoshiki.tamura](https://devforum.zoom.us/u/yoshiki.tamura)\ **Replies:** 4\ **Last updated:** [September 16, 2026, 7:48am UTC](https://devforum.zoom.us/t/pre-join-camera-preview-does-not-display-in-16-9-aspect-ratio-with-createlocalvideotrack-start-web-video-sdk-v1-5-0/146315 "2026-09-16T07:48:19Z")
Note: This post was translated from Japanese into English with the assistance of AI. Please let me know if anything is unclear. Description We are currently developing a live streaming application using React and the Z… --- ## [Does \`adjustUserAudioVolumeLocally()\` Work Before the Remote Audio Stream Is Available?](https://devforum.zoom.us/t/does-adjustuseraudiovolumelocally-work-before-the-remote-audio-stream-is-available/146133)
**Author:** [@Seya](https://devforum.zoom.us/u/Seya)\ **Replies:** 1\ **Last updated:** [September 16, 2026, 7:35am UTC](https://devforum.zoom.us/t/does-adjustuseraudiovolumelocally-work-before-the-remote-audio-stream-is-available/146133 "2026-09-16T07:35:57Z")
Hi, I have a question regarding the Zoom Video SDK Web audio APIs. I noticed that calling: stream.muteUserAudioLocally(userId); stream.unmuteUserAudioLocally(userId); before the remote user’s audio stream is availabl… --- ## [Web Video SDK 2.4.0 — Memory leak (~70 MB per session) after destroyClient(); orphaned "vb\_worker" created without Virtual Background](https://devforum.zoom.us/t/web-video-sdk-2-4-0-memory-leak-70-mb-per-session-after-destroyclient-orphaned-vb-worker-created-without-virtual-background/146168)
**Author:** [@meet-jeavio](https://devforum.zoom.us/u/meet-jeavio)\ **Replies:** 5\ **Last updated:** [September 14, 2026, 6:58am UTC](https://devforum.zoom.us/t/web-video-sdk-2-4-0-memory-leak-70-mb-per-session-after-destroyclient-orphaned-vb-worker-created-without-virtual-background/146168 "2026-09-14T06:58:48Z")
Description We run a long-lived kiosk, which suffice sequential 1:1 sessions on a single page (the page is not reloaded between sessions). For each session, we create a client, initialize, join, start audio/video, and at… --- ## [Which video mode is recommended: WebRTC Video or WebAssembly Video](https://devforum.zoom.us/t/which-video-mode-is-recommended-webrtc-video-or-webassembly-video/146312)
**Author:** [@yoshiki.tamura](https://devforum.zoom.us/u/yoshiki.tamura)\ **Replies:** 1\ **Last updated:** [September 9, 2026, 8:20pm UTC](https://devforum.zoom.us/t/which-video-mode-is-recommended-webrtc-video-or-webassembly-video/146312 "2026-09-09T20:20:32Z")
Video SDK Type and Version Web v2.5.0 Description I understand that the Zoom Video SDK offers two video modes: “WebRTC Video” mode and “WebAssembly Video” mode. However, I could not find any documentation describing th… --- ## [Video SDK Cloud Recording Error 7200](https://devforum.zoom.us/t/video-sdk-cloud-recording-error-7200/145914)
**Author:** [@Jadie](https://devforum.zoom.us/u/Jadie)\ **Replies:** 1\ **Last updated:** [August 31, 2026, 6:59pm UTC](https://devforum.zoom.us/t/video-sdk-cloud-recording-error-7200/145914 "2026-08-31T18:59:20Z")
Hi Zoom Developer Team, We are implementing Cloud Recording using the Zoom Video SDK for Web and are currently unable to start a recording. We reviewed the Video SDK cloud recording documentation provided by your team … --- ## [Need help with Video SDK app](https://devforum.zoom.us/t/need-help-with-video-sdk-app/145384)
**Author:** [@India1](https://devforum.zoom.us/u/India1)\ **Replies:** 5\ **Last updated:** [August 12, 2026, 1:21pm UTC](https://devforum.zoom.us/t/need-help-with-video-sdk-app/145384 "2026-08-12T13:21:50Z")
I’m the account owner/admin trying to set up the Zoom Video SDK (sessions + transcript + webhooks), but I cannot create a Video SDK app or get credentials, and I need pricing clarity before proceeding. Problem: Market… --- ## [Zoom Video SDK: “Failover” reconnections on iOS when a participant joins](https://devforum.zoom.us/t/zoom-video-sdk-failover-reconnections-on-ios-when-a-participant-joins/145139)
**Author:** [@k112q](https://devforum.zoom.us/u/k112q)\ **Replies:** 3\ **Last updated:** [August 7, 2026, 12:55am UTC](https://devforum.zoom.us/t/zoom-video-sdk-failover-reconnections-on-ios-when-a-participant-joins/145139 "2026-08-07T00:55:38Z")
Video SDK Type and Version Zoom Video SDK for Web 2.4.5 Description Many of our sessions on iOS (WebKit) experience a brief disconnection immediately after another participant joins the session with their video enable… --- ## [Required consent gates not showing with mobile devices with enlarged font, no scroll available](https://devforum.zoom.us/t/required-consent-gates-not-showing-with-mobile-devices-with-enlarged-font-no-scroll-available/145338)
**Author:** [@Matthew17](https://devforum.zoom.us/u/Matthew17)\ **Replies:** 1\ **Last updated:** [August 6, 2026, 5:24pm UTC](https://devforum.zoom.us/t/required-consent-gates-not-showing-with-mobile-devices-with-enlarged-font-no-scroll-available/145338 "2026-08-06T17:24:36Z")
Title: UI Toolkit 2.4.5-1: recording-consent and Join Audio dialogs clip their own buttons/text at large browser font sizes, with no way to scroll Environment @zoom/videosdk-ui-toolkit 2.4.5-1 (the CDN-hosted ESM bund… --- ## [Web Video SDK 2.4.5: Duplicate participant created on network reconnection](https://devforum.zoom.us/t/web-video-sdk-2-4-5-duplicate-participant-created-on-network-reconnection/145190)
**Author:** [@Thong1](https://devforum.zoom.us/u/Thong1)\ **Replies:** 5\ **Last updated:** [August 6, 2026, 7:56am UTC](https://devforum.zoom.us/t/web-video-sdk-2-4-5-duplicate-participant-created-on-network-reconnection/145190 "2026-08-06T07:56:26Z")
Description Duplicate participant (ghost user) is created when reconnecting to a session after a network disconnection of 1.5 to 2 minutes. This issue occurs on Web Video SDK version 2.4.5, whereas on version 2.2.12 wi… --- ## [Zoom Video SDK Price](https://devforum.zoom.us/t/zoom-video-sdk-price/144877)
**Author:** [@sudhakar](https://devforum.zoom.us/u/sudhakar)\ **Replies:** 1\ **Last updated:** [July 21, 2026, 3:45pm UTC](https://devforum.zoom.us/t/zoom-video-sdk-price/144877 "2026-07-21T15:45:03Z")
Description I am using Zoom Video SDK v2.3.15 and would like to understand the per-minute pricing for the services used during a session. Session Details: Zoom Video SDK version: 2.3.15 Number of participants: 100 Se… --- ## [Black screen on remote participant after screen share ends](https://devforum.zoom.us/t/black-screen-on-remote-participant-after-screen-share-ends/144734)
**Author:** [@Gatsby](https://devforum.zoom.us/u/Gatsby)\ **Replies:** 15\ **Last updated:** [July 17, 2026, 3:47am UTC](https://devforum.zoom.us/t/black-screen-on-remote-participant-after-screen-share-ends/144734 "2026-07-17T03:47:07Z")
The Problem When one participant stops sharing their screen, the other participant sees a black screen in the main video area. However, if the affected participant then clicks the PIP thumbnail to swap views, the remote… --- ## [Zoom Web Video SDK Virtual Background (COEP requirement) conflicts with third-party iframe](https://devforum.zoom.us/t/zoom-web-video-sdk-virtual-background-coep-requirement-conflicts-with-third-party-iframe/144671)
**Author:** [@Thong1](https://devforum.zoom.us/u/Thong1)\ **Replies:** 13\ **Last updated:** [July 15, 2026, 6:07am UTC](https://devforum.zoom.us/t/zoom-web-video-sdk-virtual-background-coep-requirement-conflicts-with-third-party-iframe/144671 "2026-07-15T06:07:28Z")
Description We are integrating the Zoom Web Video SDK into a Flutter Web (Single Page Application). To support the WebAssembly and SharedArrayBuffer features such as the Virtual Background (and optimal video/audio proc… --- ## [Video SDK cloud recordings inconsistently generate audio transcripts (VTT), produced for some sessions, silently absent for others](https://devforum.zoom.us/t/video-sdk-cloud-recordings-inconsistently-generate-audio-transcripts-vtt-produced-for-some-sessions-silently-absent-for-others/144510)
**Author:** [@Matthew17](https://devforum.zoom.us/u/Matthew17)\ **Replies:** 1\ **Last updated:** [July 1, 2026, 9:07am UTC](https://devforum.zoom.us/t/video-sdk-cloud-recordings-inconsistently-generate-audio-transcripts-vtt-produced-for-some-sessions-silently-absent-for-others/144510 "2026-07-01T09:07:29Z")
Cloud recording on our Video SDK account works reliably (MP4 is always produced). The audio transcript (VTT) is produced for some sessions and silently not produced for others. When it’s absent, there is no TRANSCRIPT fi… --- ## [Video SDK — "This account does not exist or does not belong to you" (errorCode 200) on a new Build Platform account, fails even with the official sample](https://devforum.zoom.us/t/video-sdk-this-account-does-not-exist-or-does-not-belong-to-you-errorcode-200-on-a-new-build-platform-account-fails-even-with-the-official-sample/144465)
**Author:** [@Lubomir](https://devforum.zoom.us/u/Lubomir)\ **Replies:** 1\ **Last updated:** [June 29, 2026, 5:06am UTC](https://devforum.zoom.us/t/video-sdk-this-account-does-not-exist-or-does-not-belong-to-you-errorcode-200-on-a-new-build-platform-account-fails-even-with-the-official-sample/144465 "2026-06-29T05:06:49Z")
I have a newly created Zoom Build Platform (CPaaS) Video SDK account (free trial, status Active, created today). When joining a session I always get: {type: ‘JOIN\_MEETING\_FAILED’, reason: ‘This account does not exist or… --- ## [Sudden spike in latency in multiple session at a time](https://devforum.zoom.us/t/sudden-spike-in-latency-in-multiple-session-at-a-time/143419)
**Author:** [@Iqbal1](https://devforum.zoom.us/u/Iqbal1)\ **Replies:** 5\ **Last updated:** [May 18, 2026, 12:07pm UTC](https://devforum.zoom.us/t/sudden-spike-in-latency-in-multiple-session-at-a-time/143419 "2026-05-18T12:07:26Z")
Hi Zoom Developer Support Team, We observed a localized but significant performance issue impacting multiple concurrent Zoom Video SDK sessions on May 7, 2026, started at 19:03 IST. Participants across several independ… --- ## [One participant consistently experiences audio crackling across different meetings](https://devforum.zoom.us/t/one-participant-consistently-experiences-audio-crackling-across-different-meetings/143232)
**Author:** [@simas.mockus](https://devforum.zoom.us/u/simas.mockus)\ **Replies:** 7\ **Last updated:** [May 14, 2026, 2:47pm UTC](https://devforum.zoom.us/t/one-participant-consistently-experiences-audio-crackling-across-different-meetings/143232 "2026-05-14T14:47:40Z")
Format Your New Topic as Follows: Video SDK Type and Version ^2.3.12 Description One participant consistently reports audio crackling/distortion, regardless of who she is connected with. Other participants in the same… --- ## [Audio Bleed Between Breakout Rooms — Local Mute and Subsession Approaches Both Have Issues in Brave](https://devforum.zoom.us/t/audio-bleed-between-breakout-rooms-local-mute-and-subsession-approaches-both-have-issues-in-brave/142431)
**Author:** [@puvivinocmv](https://devforum.zoom.us/u/puvivinocmv)\ **Replies:** 15\ **Last updated:** [May 8, 2026, 1:23am UTC](https://devforum.zoom.us/t/audio-bleed-between-breakout-rooms-local-mute-and-subsession-approaches-both-have-issues-in-brave/142431 "2026-05-08T01:23:56Z")
summary I’m building a breakout room feature using the Zoom Video SDK for Web. I’ve implemented two separate approaches to achieve participant audio isolation between rooms: Approach 1 (Legacy): Local mute / unmute vi… --- ## [Request for user.remove API Activation and Inquiry regarding Forum Login Issue](https://devforum.zoom.us/t/request-for-user-remove-api-activation-and-inquiry-regarding-forum-login-issue/142585)
**Author:** [@HiroakiKawai](https://devforum.zoom.us/u/HiroakiKawai)\ **Replies:** 2\ **Last updated:** [April 6, 2026, 1:26am UTC](https://devforum.zoom.us/t/request-for-user-remove-api-activation-and-inquiry-regarding-forum-login-issue/142585 "2026-04-06T01:26:19Z")
1. Background and Purpose of the Request We are currently developing an online medical consultation SaaS using Zoom Video SDK (Web v2.2.5). In our application, we have encountered an issue where participants may disconne… --- ## [Safari connection issue](https://devforum.zoom.us/t/safari-connection-issue/140440)
**Author:** [@Pavlo1](https://devforum.zoom.us/u/Pavlo1)\ **Replies:** 4\ **Last updated:** [April 1, 2026, 2:14am UTC](https://devforum.zoom.us/t/safari-connection-issue/140440 "2026-04-01T02:14:22Z")
Before Creating a New Topic: Description One of our users is encountering a connection issue on their device. I was not able to reproduce the issue on similar MacBook devices. The issue reproduces via two different fl… --- ## [Green Flickering on Video Feeds When Session Has 5+ Active Videos](https://devforum.zoom.us/t/green-flickering-on-video-feeds-when-session-has-5-active-videos/142403)
**Author:** [@noahviktorschenk](https://devforum.zoom.us/u/noahviktorschenk)\ **Replies:** 4\ **Last updated:** [March 26, 2026, 11:21am UTC](https://devforum.zoom.us/t/green-flickering-on-video-feeds-when-session-has-5-active-videos/142403 "2026-03-26T11:21:14Z")
Hi there, I’ve noticed that the video feeds in my application start flickering green once there are more than five active videos in a session. It only seems to affect some participants, while others appear completely no… --- ## [Bug Report: Black screen when overwriting screen share (Error 6205)](https://devforum.zoom.us/t/bug-report-black-screen-when-overwriting-screen-share-error-6205/141760)
**Author:** [@Thong1](https://devforum.zoom.us/u/Thong1)\ **Replies:** 5\ **Last updated:** [March 17, 2026, 8:11am UTC](https://devforum.zoom.us/t/bug-report-black-screen-when-overwriting-screen-share-error-6205/141760 "2026-03-17T08:11:03Z")
Bug Report: Black screen when overwriting screen share (Error 6205) Environment Zoom Web SDK Version: v2.2.12 Browser: Microsoft Edge v144 OS: Windows 11 Error code: 6205 (from browser console) Pre-conditions At leas… --- ## [Audio/Video Latency on Intel Gen 9 iGPU (no discrete GPU) — VP9 HW Encode Disabled, SDK 2.3.12](https://devforum.zoom.us/t/audio-video-latency-on-intel-gen-9-igpu-no-discrete-gpu-vp9-hw-encode-disabled-sdk-2-3-12/142149)
**Author:** [@Sohan](https://devforum.zoom.us/u/Sohan)\ **Replies:** 3\ **Last updated:** [March 6, 2026, 2:15pm UTC](https://devforum.zoom.us/t/audio-video-latency-on-intel-gen-9-igpu-no-discrete-gpu-vp9-hw-encode-disabled-sdk-2-3-12/142149 "2026-03-06T14:15:42Z")
Description Hey, One of our users (User A) on a Windows 11, Intel UHD Gen9 is experiencing significant audio/video latency on our platform. Another user (User B) on an Apple M4 Max has no issues in the same sessions. Th… --- ## [Share screen not running after few times in meeting using Zoom Video SDK](https://devforum.zoom.us/t/share-screen-not-running-after-few-times-in-meeting-using-zoom-video-sdk/141869)
**Author:** [@matthew.offshorly](https://devforum.zoom.us/u/matthew.offshorly)\ **Replies:** 5\ **Last updated:** [March 2, 2026, 9:16am UTC](https://devforum.zoom.us/t/share-screen-not-running-after-few-times-in-meeting-using-zoom-video-sdk/141869 "2026-03-02T09:16:13Z")
Description After starting share screen then exiting it, then restarting it a few times, suddenly it stops working it doesn’t reach the finally of the promise and there is no error message as well Browser Console Error … --- ## [Unable to Differentiate Between Voluntary Leave and Admin Removal in ZOOM React Native Video SDK and ZOOM video SDK UI Toolkit](https://devforum.zoom.us/t/unable-to-differentiate-between-voluntary-leave-and-admin-removal-in-zoom-react-native-video-sdk-and-zoom-video-sdk-ui-toolkit/142057)
**Author:** [@sairamrsr33](https://devforum.zoom.us/u/sairamrsr33)\ **Replies:** 1\ **Last updated:** [February 27, 2026, 8:29am UTC](https://devforum.zoom.us/t/unable-to-differentiate-between-voluntary-leave-and-admin-removal-in-zoom-react-native-video-sdk-and-zoom-video-sdk-ui-toolkit/142057 "2026-02-27T08:29:36Z")
Description We have integrated the Zoom Video SDK (React Native)( version 2.1.10) for mobile and ZOOM video SDK web UI Toolkit( version 2.2.10-1\*\*)\*\* and facing an issue where the same event (user-removed) is triggered i… --- ## [Concerns About High Volume of reportToGlobalTracing Logs](https://devforum.zoom.us/t/concerns-about-high-volume-of-reporttoglobaltracing-logs/132835)
**Author:** [@namlv](https://devforum.zoom.us/u/namlv)\ **Replies:** 6\ **Last updated:** [February 23, 2026, 9:41pm UTC](https://devforum.zoom.us/t/concerns-about-high-volume-of-reporttoglobaltracing-logs/132835 "2026-02-23T21:41:37Z")
Description We’re currently encountering a rare issue in production (1–2% occurrence rate) that we are unable to consistently reproduce in development or staging environments. To help us trace and report these cases mor… --- ## [Zoom meeting is not working in Mac os chrome browser](https://devforum.zoom.us/t/zoom-meeting-is-not-working-in-mac-os-chrome-browser/136728)
**Author:** [@Srimuktha](https://devforum.zoom.us/u/Srimuktha)\ **Replies:** 2\ **Last updated:** [February 20, 2026, 6:07am UTC](https://devforum.zoom.us/t/zoom-meeting-is-not-working-in-mac-os-chrome-browser/136728 "2026-02-20T06:07:11Z")
Description Issue Summary: Zoom Client Not Opening in Chrome on macOS Environment: Browser: Google Chrome Chrome Version : Version 139.0.7258.128 Operating System: macOS Application: Zoom (Web Client) Pr… [Next page](https://devforum.zoom.us/c/video-sdk/web/31.md?page=1)