ffmpeg -i DJI_0021.MP4 -vf "scale=960:540" -c:v libx264 herculane_DJI_0021_full_540p.mp4
ffmpeg -i DJI_0021.MP4 -vf "scale=1280:720" -c:v libx264 herculane_DJI_0021_full_720p.mp4