You might say how would software combine 2 images for a hdr. The future way to film hdr is that the camera films double the ammount of frames. Instead of like 30 frames it will do 60 frames with 30 a bit under exposed and 30 over exposed with ISO differences and able to combine the images to become HDR 30 frames movie. However the current DSLR developement if they would add 60p and if the processor speed can handle processing each frames different to do HDR. But I think either it will happen to small pocket camera’s or the pro video camera’s first before it would hit the DSLR unless some brand read this and tries it as a new gimmick.