What aspect ratio is IGTV?

Related questions

1. How does Instagram IGTV work?
2. Does Instagram support 1080p video?
3. What is the maximum video file size for Instagram?

Tags

1. #vertical
2. #facebook
3. #official
4. #video
5. #least
6. #stories
7. #aspect
8. #ratio
9. #means
10. #should
11. #pixels
12. #along