Aspect ratio
Width-to-height ratio (e.g. 16:9, 4:3, 1:1). Instagram Stories: 9:16, YouTube: 16:9. Wrong ratio causes black bars or cropping.
Width-to-height ratio (e.g. 16:9, 4:3, 1:1). Instagram Stories: 9:16, YouTube: 16:9. Wrong ratio causes black bars or cropping.