Stabilizing GoPro Video with FFmpeg and vid.stab | Important Bits
Get the latest binary here if you need it: https://www.johnvansickle.com/ffmpeg/
Step 1:
ffmpeg -i SHAKY.MP4 -vf vidstabdetect=stepsize=32:shakiness=10:accuracy=10:result=transform_vectors.trf -f null -
Step 2:
ffmpeg -i SHAKY.MP4 -vf vidstabtransform=input=transform_vectors.trf:zoom=0:smoothing=10,unsharp=5:5:0.8:3:3:0.4 -vcodec libx264 -tune film -acodec copy -preset slow STABLE.mp4