Files with the .RPF extension are image files and contain a rendered 3D-video frame or a 3D image. The information regarding the image is very extensive – apart from the standard color profile in the RGBA format, it also encompasses a record of given image channels, such as depth, transparency, and normal surfaces.

RPF files are used during 3D-video rendering in postproduction – thanks to the additional information about the pixels, the frame can be selectively subjected to various types of effects to affect only the relevant data, which ensures quick processing.