You have decided to post a video or reel on Instagram but, you are unable to post it because of the error prompt “We’re sorry, but there was a problem posting your video. Please try again” with “video can’t be posted” written on the top of the error popup.
Most of the time this error can’t go away and it gets stuck on the home page of the Instagram app. If you are going through the same error then this post will teach you how to fix “video can’t be posted” error on Instagram.