The thumbnail of your video can be changed in 3 simple steps as mentioned below.
1. From the dashboard, open the project for which you want to add the thumbnail.
2. Move the play head on the timeline to the instance you want to be used as the thumbnail.
3. From the top left corner click the dropdown menu and select Smart thumbnail option.
4. Now you can set the current frame as a thumbnail or upload an image of your choice from your PC/Laptop as the thumbnail image.
Once you set the thumbnail, it will be added to the video’s Metadata and you will see that the thumbnail image of your project is successfully updated.
Similarly, you can choose the thumbnail image for the new video projects you create as well.
If you want the project thumbnail to be changed anytime later, you can follow the above steps to change the thumbnail image whenever you want.