[DCP-o-matic] Suggestion about length for still images

Hello, I know it will sound weird but this might be useful for creating short animated DCP from still images : is there a way to set the duration/length of one still image to, well, the length of one frame depending on the framerate, most commonly 1/24 second ? We could even imagine an "animation" mode to the length table where duration would be displayed in number of frames (instead of time actually)… Any thoughts or advices ? Best regards, Gérald