I just discovered this awesome tool that let's you download Instagram videos! Simply paste the link of any Instagram video into it's submission field, and it will quickly give you a Download button to download the MP4 movie file.
Check it out: downloadgram.com
Below is a video I pulled off of Instagram for one of my favorite clients, Sandiaseed.com. She uploads her videos to Instagram, and I can use the downloadgram.com tool to download and reuse and post on Facebook, YouTube, etc. The best way to become a SEO Hero is to make sure your content is spread around the web, so putting videos in multiple places, and linking them all to your website page for more info, is a great way to spread your content around for the entire world to see.