This problem is caused by the HDR camera settings. To avoid encountering this problem, please turn off the HDR camera settings when shooting videos on your iPhone.

On supported models, iPhone records video in Dolby Vision HDR for true-to-life color and contrast. To turn off HDR video recording, go to Settings > Camera > Record Video, then turn off HDR Video or HDR (depending on your model).

For videos that are already shot and ready for editing, you can send the original files to support#flexclip.com (replace#with@), and then we'll help convert.