How to Set a Video Thumbnail from the Video File

< 1 min read

Updated on August 22, 2026

You can set a file’s thumbnail straight from the video itself. Instead of choosing from a fixed set of preview images, you scrub through the actual video file to any moment you like and set that as the thumbnail.

Set the thumbnail

  1. Open the video file you want to pick a thumbnail from.
  2. Scrub or play the video to the exact moment in the file you want as the thumbnail. For frame-accurate control, use the “.” and “,” keys to step forward and back one frame at a time — see How to View a Video Frame by Frame for all the player controls and hotkeys.
  3. In the player’s bottom control bar, click the camera / screenshot icon.
  4. Choose “Set frame as thumbnail.”

That moment from your video is now the thumbnail — it’s used for both the video file and its stage.

How to Set a Video Thumbnail from the Video File in Krock.io

Save the frame as an image

The same menu also has a “Download frame” option. Use it if you want to save the current moment as an image file, separately from setting it as the thumbnail.

Need a hand with this? Reach out at support@krock.io, and we’ll be glad to help.

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