Create a time lapse of some sort:
ffmpeg -i GH012287_1575218935438_high.MP4 -vf tmix=frames=5:weights="1 1 1 1 1",select='not(mod(n\,5))',setpts=0.5*PTS out.mp4
Optionally add deshake if it's jittery:
ffmpeg -i GH012287_1575218935438_high.MP4 -vf deshake,tmix=frames=10:weights="1",setpts=0.5*PTS out-4.mp4