CNET: How to post a still frame of a video to Instagram. “Here’s the scenario: I recorded a video but no photos from my son’s first ski race last weekend. My video footage tuned out to be less than compelling, but I wanted to share something from the big event on Instagram for his grandparents and my tens of followers. Without any photos, what was I to do? With a little trial and error, I found a good way to post a still frame from the video I captured.” Handy tip.