Files .R3D from RED Cameras is unsupported

[JeditPro]

@paulpacifico Please if possible add support for .R3D files from RED cameras. Apparently this file format is not yet supported by ffmpeg. I tried using the "Merge" option to merge some files and I always get this error message:

Here are some .R3D files if you need them https://drive.google.com/file/d/1-0PMtsJpOEyYX4SplEuF-o6kkLRKHFAH/view?usp=sharing