If you want to change the automatically captured thumbnails, you can capture it directly from the video with a built in thumbnail capture tool or upload your own.

1. Capture and upload
Media Thumbnail
A P P L I ES TO
P RO D U C TS : E N T E R P R I S E T U B E , M E D I A T U B E , M E D I A L M S A N D
M E D I A CO M M E RC E
RO L E : A D M I N I S T R ATO R , M A N AG E RS , M O D E R ATO RS , CO N T R I B U TO R
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