The still image that's shown on your Click-to-Play video ad before someone plays the video.
- The opening image is how your Click-to-Play ad will appear until someone plays the video. When someone clicks the image or the play button, your ad's video will play, replacing the opening image.
- To improve your video ad's visibility, upload an opening image in all available video ad sizes. Google automatically resizes your video to scale to your selected sizes and opening image.