Short explanation of what's going on in terms of VFX:
-Irritating rolling shutter effect caused by large sensor of DSLR being incapable of capturing one frame at single point in time. Rolling shutter removal procedure was derived from example where rolling shutter was removed from Nikon camera footage.
-Tone-mapping applied to the image to greatly improve specious sharpness and pump out the details from the footage.
-Noise reduction applied to get cleaner tone-mapping results, and deblocking applied afterwards to clean out image structure-artifacts of the encoding process.
-Beautiful color-grading to improve desired moods on the film.
-Muzzle flashes and blood effects.
-Vignetting and letterboxing to improve the film-like visuals.
-Added grain to make a bit more organic feel to the movie, to unify the image-structure across a frame (grain makes it harder to detect blocking patterns caused by encoding and deblocking) and to add micro-level specious sharpness.
And with these words, here is the link to the movie. Enjoy!