This goes beyond UAVs into video editing. But it comes up every time I shoot moving water (rivers) from above (P3P or Mavic). I export from Premiere Pro using different formats (wmv,mp4/h.264) and bit rates. Usually exporting to 1080p whether I shot at 4k or 1080. No matter what export settings I try I always get strange swirling patterns that didn't exist in the original footage. It looks like a machine learning system tried to reinterpret the noise in water footage as ghosts flying through the Disneyland Haunted Mansion. Anyone know how avoid this?