Yes you are right. I tested Dropbox - DJI_0015.MP4 H.265 file available at link. Adobe Premiere CS6 & After Effects CS6 under Windows cannot import the file. I made the conversion from H.265 to ProRes with FFmpeg and the import of ProRes file into CS6 works fine. I used the simple command: "ffmpeg -i DJI_0015.MP4 -vcodec prores -profile:v 2 output.mov".