The abilities of a feature complement its positioning to users. I would imagine that the limited 1 minute videos are in the main Instagram app, where they would

The abilities of a feature complement its positioning to users. I would imagine that the limited 1 minute videos are in the main Instagram app, where they would likely want to retain the feel of Instagram, which wouldn't work well with long form content. Now IGTV might be their play for long form content. Sure, both are video, and both are from Instagram, but two very different ways of positioning video, for different purposes, in different places, targeting different people.