Instagram is an online photo-sharing, video-sharing and social networking service that enables its users to take pictures and videos, apply digital filters to them, and share them on a variety of social networking services, such as Facebook, Twitter, Tumblr and Flickr. A distinctive feature is that it confines photos to a square shape, similar to Kodak Instamatic and Polaroid images, in contrast to the 16:9 aspect ratio now typically used by mobile device cameras. Users are also able to record and share short videos lasting for up to 15 seconds.
The Photo Story App for iPhone and iPad can help you make a slideshow video of your Camera Roll or Instagram photos and directly share to Instagram.
Photo Story App is specially optimized for Instagram. You can easily crop the images to square shapes in a batch. To enable auto time for instagram, the duration of the video will be set to 15 seconds and the duration for each slide will be divided evenly. When you go to upload the video to Instagram, no cropping or trimming is required.
To learn how to create photo slideshow video for Instagram on iPhone, please refer to