Red screen but have audio

[#1]

Hi, I am making a little film of several clips of people sent to me from various devices - all have gone in fine - apart from my own! Recorded on iphone XR and airdroped to my mac.  The audio plays and the picture shows in the 'timeline' but the thumbnail on the included media and the picture when playing are both solid red.  

[#2]

Hi, I am making a little film of several clips of people sent to me from various devices - all have gone in fine - apart from my own! Recorded on iphone XR and airdroped to my mac.  The audio plays and the picture shows in the 'timeline' but the thumbnail on the included media and the picture when playing are both solid red.