# Web

**URL:** https://devforum.zoom.us/c/video-sdk/web/31.md?page=24

[Latest](https://devforum.zoom.us/latest.md) · [Categories](https://devforum.zoom.us/categories.md) · [Tags](https://devforum.zoom.us/tags.md)

**Page:** 25

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## [Zoom Video SDK and multiple video sources at the same time](https://devforum.zoom.us/t/zoom-video-sdk-and-multiple-video-sources-at-the-same-time/63642)

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**Author:** [@aweston](https://devforum.zoom.us/u/aweston)\
**Replies:** 0\
**Last updated:** [February 2, 2022, 3:28pm UTC](https://devforum.zoom.us/t/zoom-video-sdk-and-multiple-video-sources-at-the-same-time/63642 "2022-02-02T15:28:24Z")

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Using the Zoom Video SDK … is it possible to start two video sources at the same time? I’m looking at using the Stream.startVideo() / stopVideo() calls and it seems to only support a current camera and video. In our ap…

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## [When I start the sample application with "npx http-server", only one video is displayed](https://devforum.zoom.us/t/when-i-start-the-sample-application-with-npx-http-server-only-one-video-is-displayed/63590)

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**Author:** [@tanimuranaomichi](https://devforum.zoom.us/u/tanimuranaomichi)\
**Replies:** 0\
**Last updated:** [February 2, 2022, 1:39am UTC](https://devforum.zoom.us/t/when-i-start-the-sample-application-with-npx-http-server-only-one-video-is-displayed/63590 "2022-02-02T01:39:26Z")

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Description I cloned the file from “GitHub - zoom/sample-app-videosdk: zoom videosdk web demo ” and set dev.ts. When I run “npm run start”, I see multiple videos. However, when I run “npm run build” and then “npx http…

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## [Separate recordings for each participant's stream](https://devforum.zoom.us/t/separate-recordings-for-each-participants-stream/62690)

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**Author:** [@NickV](https://devforum.zoom.us/u/NickV)\
**Replies:** 7\
**Last updated:** [February 1, 2022, 7:23pm UTC](https://devforum.zoom.us/t/separate-recordings-for-each-participants-stream/62690 "2022-02-01T19:23:46Z")

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Hi Community, We’ve built a product using Twilio’s Programmable Video and we want to switch over to Zoom SDK for more reliable streaming on low bandwidth connections. Twilio’s connectivity has not been great. What is i…

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## [All participants are a manager on joining](https://devforum.zoom.us/t/all-participants-are-a-manager-on-joining/60506)

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**Author:** [@nickuk](https://devforum.zoom.us/u/nickuk)\
**Replies:** 9\
**Last updated:** [February 1, 2022, 5:39pm UTC](https://devforum.zoom.us/t/all-participants-are-a-manager-on-joining/60506 "2022-02-01T17:39:36Z")

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Description Anyone who joins a session is automatically set as being a manager. I discovered this when attempting to makeManager on a participant who shouldn’t have been a manager yet. I was doing this to test the foll…

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## [SDK HIPAA compliance](https://devforum.zoom.us/t/sdk-hipaa-compliance/63457)

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**Author:** [@pranshu.midha](https://devforum.zoom.us/u/pranshu.midha)\
**Replies:** 0\
**Last updated:** [January 31, 2022, 4:44am UTC](https://devforum.zoom.us/t/sdk-hipaa-compliance/63457 "2022-01-31T04:44:19Z")

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Hello I am planning to use Zoom Web Video SDK into an application I’m developing. The application is for the healthcare sector so we need HIPAA compliance as well. I see that the SDK is compliant for HIPAA: Mobile SDK…

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## [Unexpected host exit](https://devforum.zoom.us/t/unexpected-host-exit/63097)

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**Author:** [@reactdev](https://devforum.zoom.us/u/reactdev)\
**Replies:** 3\
**Last updated:** [January 27, 2022, 9:08am UTC](https://devforum.zoom.us/t/unexpected-host-exit/63097 "2022-01-27T09:08:15Z")

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What happens if only host displays video and close tab - browser or network lose. What is the condition of the other participants?

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## [Possible way to use Zoom LTI PRO on Wordpress](https://devforum.zoom.us/t/possible-way-to-use-zoom-lti-pro-on-wordpress/62941)

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**Author:** [@Malika\_Cheema](https://devforum.zoom.us/u/Malika_Cheema)\
**Replies:** 0\
**Last updated:** [January 20, 2022, 11:58am UTC](https://devforum.zoom.us/t/possible-way-to-use-zoom-lti-pro-on-wordpress/62941 "2022-01-20T11:58:34Z")

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I am Looking for a possible way to use the zoom application (LTI PRO) without the need of installing Moodle or Canvas. I’ve been looking for a solution online but all I found is about Moodle and Canvas. I tried to conn…

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## [New participant video not shown to previous participants](https://devforum.zoom.us/t/new-participant-video-not-shown-to-previous-participants/62891)

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**Author:** [@sandis](https://devforum.zoom.us/u/sandis)\
**Replies:** 0\
**Last updated:** [January 19, 2022, 2:30pm UTC](https://devforum.zoom.us/t/new-participant-video-not-shown-to-previous-participants/62891 "2022-01-19T14:30:31Z")

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Description Hello, I’m using the purejs sample project, and it has been slightly altered to allow to show more participant videos (I’m interested in showing 5 videos right now). And the problem I have run into is that …

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## [Error when try to change host](https://devforum.zoom.us/t/error-when-try-to-change-host/62822)

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**Author:** [@reactdev](https://devforum.zoom.us/u/reactdev)\
**Replies:** 0\
**Last updated:** [January 18, 2022, 1:50pm UTC](https://devforum.zoom.us/t/error-when-try-to-change-host/62822 "2022-01-18T13:50:15Z")

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I try to change host on button click. This is function const changeHost = async () =\> { const currentUser = await zmClient.getCurrentUserInfo(); await zmClient.makeHost(currentUser.userId); } Get erro…

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## [Zoomウェビナーにて パネリストが途中で退室してしまった場合、 同じEmailにて再度のウェビナー入室が出来ない問題](https://devforum.zoom.us/t/zoom-email/62663)

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**Author:** [@gakkai](https://devforum.zoom.us/u/gakkai)\
**Replies:** 1\
**Last updated:** [January 17, 2022, 12:10am UTC](https://devforum.zoom.us/t/zoom-email/62663 "2022-01-17T00:10:33Z")

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Description 「Tk param Error in Panelist Browser」 Zoomウェビナーにて、 パネリストが途中で退室してしまった場合、 同じEmailにて再度のウェビナー入室が出来ない問題が発生しています Browser Console Error The full error message or issue you are running into. Which Web Video SDK…

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## [Video Sdk App canvas styles are broken in production mode](https://devforum.zoom.us/t/video-sdk-app-canvas-styles-are-broken-in-production-mode/62682)

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**Author:** [@matinyan\_0](https://devforum.zoom.us/u/matinyan_0)\
**Replies:** 0\
**Last updated:** [January 14, 2022, 3:21pm UTC](https://devforum.zoom.us/t/video-sdk-app-canvas-styles-are-broken-in-production-mode/62682 "2022-01-14T15:21:23Z")

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Video sdk app works in local as expected, but canvas styles are broken in production mode

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## [Video SDK CDN Link](https://devforum.zoom.us/t/video-sdk-cdn-link/62459)

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**Author:** [@jensenpj85](https://devforum.zoom.us/u/jensenpj85)\
**Replies:** 4\
**Last updated:** [January 14, 2022, 2:57am UTC](https://devforum.zoom.us/t/video-sdk-cdn-link/62459 "2022-01-14T02:57:37Z")

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For Zoom’s web meetings, you can download the SDK client-side via Zoom’s CDN by including a script tag element in the HTML file with \<script src=“https://source.zoom.us/2.1.1/zoom-meeting-embedded-2.1.1.min.js”\>\</script\>…

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## [Canvas window full width and height](https://devforum.zoom.us/t/canvas-window-full-width-and-height/62550)

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**Author:** [@reactdev](https://devforum.zoom.us/u/reactdev)\
**Replies:** 3\
**Last updated:** [January 14, 2022, 2:25am UTC](https://devforum.zoom.us/t/canvas-window-full-width-and-height/62550 "2022-01-14T02:25:17Z")

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I try to render canvas with full window width and height. I calculate window width and height and put them in renderVideo and canvas element. Video takes all window height but not window width. Video is square. await me…

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## [Maximum number of people and video display in a web browser](https://devforum.zoom.us/t/maximum-number-of-people-and-video-display-in-a-web-browser/62595)

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**Author:** [@swallows.yb](https://devforum.zoom.us/u/swallows.yb)\
**Replies:** 0\
**Last updated:** [January 13, 2022, 5:16am UTC](https://devforum.zoom.us/t/maximum-number-of-people-and-video-display-in-a-web-browser/62595 "2022-01-13T05:16:51Z")

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Description When you say that the maximum number of participants is 1000, does that mean that up to 1000 people can participate at the same time in a web browser? Also, is it correct that the maximum number of videos t…

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## [WebGLContextLost](https://devforum.zoom.us/t/webglcontextlost/62238)

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**Author:** [@ALanois](https://devforum.zoom.us/u/ALanois)\
**Replies:** 8\
**Last updated:** [January 13, 2022, 2:45am UTC](https://devforum.zoom.us/t/webglcontextlost/62238 "2022-01-13T02:45:00Z")

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Hello, I need to display the video of each participant separately in circles. So I had to go through the solution of displaying each video individually in a separate canvas. After 4-5 participants I have a WebGlContextL…

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## [The video does not appear when the user comes to the page](https://devforum.zoom.us/t/the-video-does-not-appear-when-the-user-comes-to-the-page/62056)

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**Author:** [@reactdev](https://devforum.zoom.us/u/reactdev)\
**Replies:** 3\
**Last updated:** [January 11, 2022, 9:57am UTC](https://devforum.zoom.us/t/the-video-does-not-appear-when-the-user-comes-to-the-page/62056 "2022-01-11T09:57:25Z")

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I try start livestream video on open page, follow doc for setup and create token, init, join, start video. Session is started, users are join on session, but video doesn’t show. I try with canvas and video tags. on firs…

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## [INVALID\_PARAMETERS: You must pass a \<video\> element to start video capture for Chromium browser](https://devforum.zoom.us/t/invalid-parameters-you-must-pass-a-video-element-to-start-video-capture-for-chromium-browser/62011)

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**Author:** [@pavloshchur](https://devforum.zoom.us/u/pavloshchur)\
**Replies:** 5\
**Last updated:** [January 11, 2022, 9:31am UTC](https://devforum.zoom.us/t/invalid-parameters-you-must-pass-a-video-element-to-start-video-capture-for-chromium-browser/62011 "2022-01-11T09:31:06Z")

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I receive the following error when I try to render a self video in Chrome (96.0.4664.110): “You must pass a \<video\> element to start video capture for Chromium browser, Android browser, and Chrome without SharedArrayBuff…

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## [When launching an app with “npx http-server”, only one video is displayed](https://devforum.zoom.us/t/when-launching-an-app-with-npx-http-server-only-one-video-is-displayed/62484)

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**Author:** [@tanimuranaomichi](https://devforum.zoom.us/u/tanimuranaomichi)\
**Replies:** 0\
**Last updated:** [January 11, 2022, 8:53am UTC](https://devforum.zoom.us/t/when-launching-an-app-with-npx-http-server-only-one-video-is-displayed/62484 "2022-01-11T08:53:08Z")

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Description I cloned the file from “GitHub - zoom/sample-app-videosdk: zoom videosdk web demo ” and set dev.ts. When I run “npm run start”, I see multiple videos. However, when I run “npm run build” and then “npx http…

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## [Video SDK: cannot render a self video in Chrome](https://devforum.zoom.us/t/video-sdk-cannot-render-a-self-video-in-chrome/62009)

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**Author:** [@pavloshchur](https://devforum.zoom.us/u/pavloshchur)\
**Replies:** 6\
**Last updated:** [January 6, 2022, 10:56am UTC](https://devforum.zoom.us/t/video-sdk-cannot-render-a-self-video-in-chrome/62009 "2022-01-06T10:56:04Z")

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I cannot render a self video in Chrome (96.0.4664.110) but I can do this in Firefox (95.0.2) but in the same time I can render other participant’s video in Chrome and video started in Chrome can be seen by other particip…

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## [Video SDK: cannot style videos](https://devforum.zoom.us/t/video-sdk-cannot-style-videos/62036)

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**Author:** [@pavloshchur](https://devforum.zoom.us/u/pavloshchur)\
**Replies:** 6\
**Last updated:** [January 6, 2022, 9:44am UTC](https://devforum.zoom.us/t/video-sdk-cannot-style-videos/62036 "2022-01-06T09:44:13Z")

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In the documentation, it is stated that as a best practice, you should render all participant videos on a single canvas to optimize CPU usage and performance. As a result, we have one canvas element on the page and cann…

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## [When launching an app with "npx http-server", only one video is displayed](https://devforum.zoom.us/t/when-launching-an-app-with-npx-http-server-only-one-video-is-displayed/62267)

<div class="topic-metadata">

**Author:** [@tanimuranaomichi](https://devforum.zoom.us/u/tanimuranaomichi)\
**Replies:** 0\
**Last updated:** [January 6, 2022, 7:36am UTC](https://devforum.zoom.us/t/when-launching-an-app-with-npx-http-server-only-one-video-is-displayed/62267 "2022-01-06T07:36:35Z")

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Description I cloned the file from “GitHub - zoom/sample-app-videosdk: zoom videosdk web demo” and set dev.ts. When I run “npm run start”, I see multiple videos. However, when I run “npm run build” and then “npx http-…

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## [How to make only one user to stream video](https://devforum.zoom.us/t/how-to-make-only-one-user-to-stream-video/62042)

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**Author:** [@reactdev](https://devforum.zoom.us/u/reactdev)\
**Replies:** 2\
**Last updated:** [January 6, 2022, 1:41am UTC](https://devforum.zoom.us/t/how-to-make-only-one-user-to-stream-video/62042 "2022-01-06T01:41:10Z")

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Hi, i try to make an app in react js where only one user will stream the video and the others participants can just watch video and talk when they are allowed. How to make this, how to render video for only one user in s…

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## [Is it possible to use the mobile app zoom to enter a room created with the video SDK?](https://devforum.zoom.us/t/is-it-possible-to-use-the-mobile-app-zoom-to-enter-a-room-created-with-the-video-sdk/61193)

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**Author:** [@swallows.yb](https://devforum.zoom.us/u/swallows.yb)\
**Replies:** 3\
**Last updated:** [January 3, 2022, 9:57pm UTC](https://devforum.zoom.us/t/is-it-possible-to-use-the-mobile-app-zoom-to-enter-a-room-created-with-the-video-sdk/61193 "2022-01-03T21:57:41Z")

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Description Can I make it possible to enter a room created with VideoSDK from my cell phone? Which Web Video SDK version? Video SDK Web v1.1.6

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## [SharedArrayBuffer support in sample Purejs-demo vs Reactjs-demo](https://devforum.zoom.us/t/sharedarraybuffer-support-in-sample-purejs-demo-vs-reactjs-demo/62135)

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**Author:** [@efron.vit](https://devforum.zoom.us/u/efron.vit)\
**Replies:** 0\
**Last updated:** [January 3, 2022, 4:32pm UTC](https://devforum.zoom.us/t/sharedarraybuffer-support-in-sample-purejs-demo-vs-reactjs-demo/62135 "2022-01-03T16:32:20Z")

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Description When running a sample on pure js, an error occurs, but when running a sample from the same archive on React js, there is no such problem. Everything runs in the same browser. I ran two samples (pure and rea…

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## [Get chat messages sent before user joined](https://devforum.zoom.us/t/get-chat-messages-sent-before-user-joined/61905)

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**Author:** [@jetonthaci.88](https://devforum.zoom.us/u/jetonthaci.88)\
**Replies:** 3\
**Last updated:** [December 28, 2021, 10:03am UTC](https://devforum.zoom.us/t/get-chat-messages-sent-before-user-joined/61905 "2021-12-28T10:03:06Z")

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Description If a user joins the session, does he have access to chat messages that were sent before he joined? Which Web Video SDK version? 1.1.6

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## [How can I persist active cameras as it is, and update only added/removed user's camera on each new connection?](https://devforum.zoom.us/t/how-can-i-persist-active-cameras-as-it-is-and-update-only-added-removed-users-camera-on-each-new-connection/61532)

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**Author:** [@younuskorai345](https://devforum.zoom.us/u/younuskorai345)\
**Replies:** 2\
**Last updated:** [December 25, 2021, 12:18pm UTC](https://devforum.zoom.us/t/how-can-i-persist-active-cameras-as-it-is-and-update-only-added-removed-users-camera-on-each-new-connection/61532 "2021-12-25T12:18:54Z")

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I’m developing a Video chat app with React, Redux and Zoom Web SDK. What I’m trying to do is create camera (canvas API) for each user on room enter, then removing on room leave. I implemented the feature above, but eve…

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## [Video SDK: {"type":"JOIN\_MEETING\_FAILED","reason":"This account does not exist or does not belong to you","errorCode":200}](https://devforum.zoom.us/t/video-sdk-type-join-meeting-failed-reason-this-account-does-not-exist-or-does-not-belong-to-you-errorcode-200/61859)

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**Author:** [@pavloshchur](https://devforum.zoom.us/u/pavloshchur)\
**Replies:** 2\
**Last updated:** [December 24, 2021, 3:27pm UTC](https://devforum.zoom.us/t/video-sdk-type-join-meeting-failed-reason-this-account-does-not-exist-or-does-not-belong-to-you-errorcode-200/61859 "2021-12-24T15:27:55Z")

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The code which I use for signature generation: \<script src="https://cdnjs.cloudflare.com/ajax/libs/jsrsasign/8.0.20/jsrsasign-all-min.js"\>\</script\> function generateVideoToken(sdkKey, sdkSecret, topic, …

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## [Need to implement in Angular one to many only on specific page of project](https://devforum.zoom.us/t/need-to-implement-in-angular-one-to-many-only-on-specific-page-of-project/61771)

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**Author:** [@nitisha.chhatri](https://devforum.zoom.us/u/nitisha.chhatri)\
**Replies:** 0\
**Last updated:** [December 22, 2021, 11:23am UTC](https://devforum.zoom.us/t/need-to-implement-in-angular-one-to-many-only-on-specific-page-of-project/61771 "2021-12-22T11:23:27Z")

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Description I need to implement angular video SDK in project only on specific url. But all the pages of project showing blank black screen. Angular sdk used from the link - https://devsupport.zoom.us/hc/en-us/articles…

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## ["Meeting Passcode wrong." but passcode is actual.y correct](https://devforum.zoom.us/t/meeting-passcode-wrong-but-passcode-is-actual-y-correct/61479)

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**Author:** [@kouohhashi](https://devforum.zoom.us/u/kouohhashi)\
**Replies:** 1\
**Last updated:** [December 17, 2021, 8:46am UTC](https://devforum.zoom.us/t/meeting-passcode-wrong-but-passcode-is-actual-y-correct/61479 "2021-12-17T08:46:32Z")

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Hi, I’m new here and I’m playing video-sdk react demo and my own experiment. But when I switch applications between react demo app and my own app, sometimes I got “Meeting Passcode wrong.” error when I tried to join ses…

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## [How to get raw audio from web video-sdk?](https://devforum.zoom.us/t/how-to-get-raw-audio-from-web-video-sdk/61567)

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**Author:** [@kouohhashi](https://devforum.zoom.us/u/kouohhashi)\
**Replies:** 0\
**Last updated:** [December 17, 2021, 1:00am UTC](https://devforum.zoom.us/t/how-to-get-raw-audio-from-web-video-sdk/61567 "2021-12-17T01:00:14Z")

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Description Hi, I’m trying to access raw audio stream out of zoom-sdk media stream. But I don’t see any docs about it. let stream = zmClient.getMediaStream(); # I think i can get raw audio stream let audio\_stream = st…

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