GoPro wants you to make short videos on your action camera

So you want to put your latest action camera footage on Instagram or Vine, but you'd rather not transfer the entire video to your computer or phone just to produce a seconds-long highlight. What to do? As of today, GoPro has an easy answer. It's rolling out a trimming feature that produces short, share-worthy clips, whether you're editing in the mobile app or on the camera itself -- you could post a video of your mountain bike adventures while you're still taking a breather. You'll need a full-size Hero4 to trim on-camera, but the Hero4 Session and any other WiFi-capable GoPro cam will play nicely with app-based trimming.