# How to hide thumbnail video

**URL:** <https://devforum.zoom.us/t/how-to-hide-thumbnail-video/2667>\
**Category:** Windows\
**Created:** [December 6, 2018, 1:06am UTC](https://devforum.zoom.us/t/how-to-hide-thumbnail-video/2667 "2018-12-06T01:06:24Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![guan\_bj](https://avatars.discourse-cdn.com/v4/letter/g/e480ec/32.png) [@guan\_bj](https://devforum.zoom.us/u/guan_bj)\
**Post date:** [December 6, 2018, 1:06am UTC](https://devforum.zoom.us/t/how-to-hide-thumbnail-video/2667/1 "2018-12-06T01:06:24Z")

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I use Zoom in education area. I want to hide other classmates video during class. only keep teacher and myself video. I try this API IMeetingVideoController::StopAttendeeVideo() on onUserJoin(ZOOM\_SDK\_NAMESPACE::IList\* lstUserID, const wchar\_t\* strUserList) callback, but it seams not work.

 ![thumbnail](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/1X/bff9a336c810d3da4323a7909b532c3e98216545.png)  
 ![%E6%8D%95%E8%8E%B7](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/1X/b8388509abe3058e740e5dd5f77d04527a6b9e40.png)

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**Author:** ![Wilmer\_Sun](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/wilmer_sun/32/61_2.png) [@Wilmer\_Sun](https://devforum.zoom.us/u/Wilmer_Sun)\
**Post date:** [December 8, 2018, 12:39am UTC](https://devforum.zoom.us/t/how-to-hide-thumbnail-video/2667/2 "2018-12-08T00:39:11Z")

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Thanks for using Zoom SDK.

Here is the answer for your question. The reason is that you are not the host of the meeting. Only the host has the priviledge to stop attendee’s video.

Regards,  
Wilmer

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**Author:** ![guan\_bj](https://avatars.discourse-cdn.com/v4/letter/g/e480ec/32.png) [@guan\_bj](https://devforum.zoom.us/u/guan_bj)\
**Post date:** [December 9, 2018, 3:37pm UTC](https://devforum.zoom.us/t/how-to-hide-thumbnail-video/2667/3 "2018-12-09T15:37:53Z")

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understand, Thanks your reply.

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [September 20, 2021, 8:54pm UTC](https://devforum.zoom.us/t/how-to-hide-thumbnail-video/2667/4 "2021-09-20T20:54:50Z")

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Closing as solved.

-Tommy

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [September 20, 2021, 8:54pm UTC](https://devforum.zoom.us/t/how-to-hide-thumbnail-video/2667/5 "2021-09-20T20:54:52Z")

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Closed on September 20, 2021, 8:54pm UTC