- In the primary navigation, click Media.
- Click on a video title to open the video details page.
- Click the Images tab.
- Hover over the poster image and click the browse icon ().
- Browse and select a new poster image.
- Hover over the thumbnail image and click the browse icon ().
- Browse and select a new thumbnail image.
- For the Wide, Portrait and Ultrawide images, click the Upload new image link and browse and select an image.
Note that it may take a minute for the processing to complete and for the images to appear.