Video Not Showing up on My Instagram Carousel Posts

Instagram Carousel Posts with videos are only partially supported at this time.
— If the first item in a carousel post is a video, that video will be pulled into your Feed but the remaining items (images or videos) will be skipped.
— And if the first item is an image, the images within the carousel will be pulled, but any videos will be skipped.

That said, we do have a suggestion that might help you achieve most of what you need. You can try embedding the carousel post directly into your Feed. Here’s how: