Motion Photos are unsupported

Please describe the problem you are trying to solve

I would like to import Motion Photos, which are created by the Android Camera app. They consist of short videos which include the video recording of the time period around when a photo was taken. The files consist of a JPEG file which has an MP4 file appended to it, all in a single file. The file format was reverse engineered and described at https://android.jlelse.eu/working-with-motion-photos-da0aa49b50c

Other solutions you have considered

Not really relevant.