Each asset that you upload to CELUM Content has a preview image. For video assets, you can change the preview image to a snapshot of your choice in the detail view's "Preview" tab.
Open the detail view for a video asset.
Switch to the "Preview" tab.
Start playing your video or jump to the desired position, then click "Pause".
Click the "Take a snapshot as preview image " button
in the content bar.
The preview image for the asset gets regenerated.
The new preview image will be shown in the following places:
The small preview above the navigation tabs in the detail view.
The preview in the Explore View and Advanced Search.