What is a Video Thumbnail?
Thumbnails are like the index page for books and textual content. Depending on how the thumbnail looks, the viewer will decide whether he wants to watch the video or not. A great customized video thumbnail can make the viewer choose if he wants to watch your video or not.
How to make a good Video Thumbnail
1. You should be able to convey the content of the video through the thumbnail
2. Thumbnail should be creative enough to compel the viewer to click and watch the whole video.
3. Thumbnails should be compatible with various other devices.
4. Use closeup and expressive faces, with little controversy
5. Include title and expressive words
6. A/B test the image