# WindowsSDK Webinar video not visible to attendee when using CustomUI **URL:** \ **Category:** Windows\ **Created:** [December 22, 2020, 9:58pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036 "2020-12-22T21:58:29Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![wcarle](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/wcarle/32/20534_2.png) [@wcarle](https://devforum.zoom.us/u/wcarle)\ **Post date:** [December 22, 2020, 9:58pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/1 "2020-12-22T21:58:30Z")
**Description** Video elements do not render for attendees of webinar using the custom UI **Which version?** v5.2.42037.1112 **To Reproduce(If applicable)** 1. Start the demo application and enable CustomUI 2. Choose Email Login and log in with Zoom account credentials 3. Hit the Join button and enter a webinar ID for a webinar in progress with “No Registration Required” 4. See that the host of the webinar is not visible in the meeting window 5. Click the button for the thumbnail tab and see that the thumbnails are entirely blank **Device (please complete the following information):** - Device Spec: PC - OS: Windows 10 **Additional context** I’m building a custom ui for webinars on Windows Using the sample app with CustomUI turned on, after joining an attendee can’t see the host or any panelists. The thumbnails section is blank. If an attendee is promoted to a panelist the video renders correctly. It looks like someone had the same problem with the mac SDK here: [https://devforum.zoom.us/t/webinar-host-and-panelists-not-visible-to-attendee-when-using-customui/37494/3](https://devforum.zoom.us/t/webinar-host-and-panelists-not-visible-to-attendee-when-using-customui/37494/3) But it looks like there’s been no movement on that yet but I wanted to log that the windows SDK seems to have the same issue. Thanks for your help! ---
**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\ **Post date:** [January 4, 2021, 5:38pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/2 "2021-01-04T17:38:17Z")
Hey @wcarle, Thank you for using the dev forum! I am sorry this issue is happening. That is strange that the user can only see the video stream after being promoted to a panelist. Can you upgrade to the latest version of the SDK, and see if you are still experiencing the same behavior? Version 5.4.54524.1229 Note, the current version of the SDK and future versions of the SDK will be available on Zoom Marketplace instead of github. To download the latest version, sign in to Zoom Marketplace. Navigate to “Build App” -\> “SDK” -\> “Download” -\> “Windows”. Thanks! Michael ---
**Author:** ![wcarle](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/wcarle/32/20534_2.png) [@wcarle](https://devforum.zoom.us/u/wcarle)\ **Post date:** [January 20, 2021, 6:03pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/3 "2021-01-20T18:03:09Z")
@Michael_Condon Thanks for the response, I was finally able to get around to upgrading to the latest SDK and am still seeing the problem. Attendees of webinars are only able to see the “active speaker” window and not any of the other participants when using the custom UI feature of the windows SDK. It looks like there has been a similar ongoing discussion in the Mac SDK forum as well and it seems like it is still a known bug there as well: [Webinar host and panelists not visible to attendee when using CustomUI - #5 by jon.lieblich](https://devforum.zoom.us/t/webinar-host-and-panelists-not-visible-to-attendee-when-using-customui/37494/5) ---
**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\ **Post date:** [January 20, 2021, 8:21pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/4 "2021-01-20T20:21:50Z")
Hey @wcarle, Yes, there has been lots of discussion around this. There are two things related to this. First, it is actually intended behavior that a participant-level user cannot access the other participant’s information in the meeting. This means that there is no way for a participant to render another participant’s video stream in a webinar using the SDK. A participant can only view the active speaker. This is not a bug, although I understand that this is not very convenient for the developer and user alike. The second thing, is that in the past there has been a bug where not even the active speaker’s video could be rendered. If that is happening, that is indeed a bug. Thanks! Michael ---
**Author:** ![apdevuser](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/apdevuser/32/73110_2.png) [@apdevuser](https://devforum.zoom.us/u/apdevuser)\ **Post date:** [January 22, 2021, 5:49pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/5 "2021-01-22T17:49:09Z")
Hey @Michael_Condon We are having a similar situation where our Host is logging in, joining the webinar, and utilizing the Custom UI. When we promote attendees to speak, they no longer see the Host Video. We need them to see the Host Video while they are speaking. I noticed there is a Host setting in the regular zoom client that sets the attendee video layout… Is this available through the SDK? (See Picture’s bottom right corner). Thanks! ![VideoLayoutAttendees](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/2/c/2c7312c0333295189a08dfba1b497f8b09f5a58d.png) ---
**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\ **Post date:** [January 22, 2021, 9:26pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/6 "2021-01-22T21:26:51Z")
Hey @apdevuser, > [@apdevuser](#): > > When we promote attendees to speak, they no longer see the Host Video This sounds like a bug, would you be able to share your code for handling this so we can investigate further? > [@apdevuser](#): > > I noticed there is a Host setting in the regular zoom client that sets the attendee video layout… Is this available through the SDK? This is not currently available for custom UI in the SDK. Thanks! Michael ---
**Author:** ![apdevuser](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/apdevuser/32/73110_2.png) [@apdevuser](https://devforum.zoom.us/u/apdevuser)\ **Post date:** [January 25, 2021, 8:48pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/7 "2021-01-25T20:48:26Z")
I should have been a bit more clear. The attendees are using the regular Zoom Client and when they are allowed to speak, they are seeing the Active Speaker View. We need them to always be in the Gallery View so that the host video is always visible. How can this be achieved? (Our host user is controlling the meeting with a custom UI) ---
**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\ **Post date:** [January 25, 2021, 9:35pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/8 "2021-01-25T21:35:37Z")
Hey @apdevuser, Are they using the Zoom Windows SDK or the Zoom Windows application? Thanks! Michael ---
**Author:** ![apdevuser](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/apdevuser/32/73110_2.png) [@apdevuser](https://devforum.zoom.us/u/apdevuser)\ **Post date:** [January 25, 2021, 10:28pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/9 "2021-01-25T22:28:20Z")
The host is using the Zoom Windows SDK and the Attendees/Panelists are using any one of your Zoom Applications: Windows, Mac, Android, IOS etc… ---
**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\ **Post date:** [January 26, 2021, 7:51pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/10 "2021-01-26T19:51:54Z")
Hey @apdevuser, I see, thank you for responding. I do not believe we have an interface for this in the SDK, but I am confirming with the engineers. If there is indeed no interface for this, I will submit a feature request for this. Thanks! Michael ---
**Author:** ![apdevuser](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/apdevuser/32/73110_2.png) [@apdevuser](https://devforum.zoom.us/u/apdevuser)\ **Post date:** [January 26, 2021, 9:02pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/11 "2021-01-26T21:02:58Z")
Sounds great thank you very much! ---
**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\ **Post date:** [January 26, 2021, 11:29pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/12 "2021-01-26T23:29:50Z")
You are welcome 🙂 Michael ---
**Author:** ![alvaromathis30](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/alvaromathis30/32/32822_2.png) [@alvaromathis30](https://devforum.zoom.us/u/alvaromathis30)\ **Post date:** [August 13, 2023, 3:55pm UTC](https://devforum.zoom.us/t/windowssdk-webinar-video-not-visible-to-attendee-when-using-customui/39036/13 "2023-08-13T15:55:56Z")
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