You need to have the local permission to manage asset versions on the node which contains the video asset in order to use this function.
Additionally, this feature needs to be configured in the server back-end by a technical administrator.
By default, CELUM Content uses the frame at the exact middle of a video asset in order to generate its preview image. This may not always be appropriate, as the preview image may therefore be a completely black, completely white, or otherwise unusable frame. This makes it hard to see from the preview image what a video asset is about.
In order to improve the video asset preview, you can replace it with any frame in the video:
Play the video or navigate in the player's progress bar to the wanted time frame.
Move your mouse over the video player until you see the camera
symbol in the top right corner of the video
player.
Click the camera symbol.
The preview in the asset list is immediately updated to the new frame. If you deselect and reselect the asset, the preview in sidebar and detail view also shows the new frame.
You can do this directly in the video player in the following places:
A selected video asset's sidebar
A selected video asset's detail view
A selected video asset's full screen preview and compare view