A Thumbnail is a small image captured from the video in order to recognize the video when embedded and not playing. Initially, the thumbnail is chosen automatically by the system based on a random frame from the video.
Upload Thumbnail
- Upload an image and set it as a thumbnail
Capture
- Choose a specific frame from the video and create a still as thumbnail
Auto-Generate
- Choose one still generated randomly and set it as a new thumbnail
NB: This option is not available for YouTube videos!