楼主可以参考这个帖子:https://forum.dji.com/thread-74211-1-1.html
其中21楼:
“Just so everyone knows, you must shoot MP4 not MOV for h.265 playback in Premiere.
If you shot h.265 in MOV you can just change the extension from .mov to .mp4 in the finder. Problem solved!”
我想根本原因在于PR对MOV支持不好。