Starting today, you’ll have the option to save your live video to your phone at the end of a broadcast. While live videos will continue to disappear from the app when you’re done, this update gives you the flexibility to hold onto your video and re-watch it later, especially if something exciting happens during your broadcast that you want to remember or share.
After your live broadcast ends, tap Save in the upper right corner. You’ll only be able to save your video — not the comments, likes, number of viewers or any live interactions. After saving, tap Done and your live video will be saved to your camera roll but will no longer be available in the app.
In order to save Instagram Live Video, you should be using Instagram 10.12 for both iOS and Android.