I use a GoPro hero 3 and a 3+ on most of my rides. Is there a way (even with 3rd party software) to overlay speed onto the video? I know the Hero 5 Black has GPS features and will do this on it's own, but I don't have the Hero 5 Black.
I do record the rides with a Wahoo Elemnt Bolt. What's the best solution?

Thanks,
CBR