The play (playback) icon helps let the site audience know that the tile is a video or YouTube content. This icon can be customized to be more aligned with preferred branding styles. Icons can be better rendered with a transparent background in PNG or SVG format.
Customize play icon for video or YouTube tile:
Navigate to and select the target video or YouTube tile;
On the left pane, click Custom Icon under the Play Icon section.
Select the preferred or custom icon to be used from the Media Library, or your local machine using the +Upload Media button.
Set the preferred crop in the cropper utility.
Click the Crop button.