Smooth Motion Blur

Rather than blurring the whole screen evenly, the mod works out the direction of camera movement from per-pixel depth and the camera position of the previous frame, so only pixels that move smear along their own path. Fast flicks produce clean directional streaks, and the view snaps back to a crisp image once the camera stops.

The first-person hand, the HUD, menus and the center of the screen stay sharp. Strength is set with the command motionblur followed by a value from 0 to 300: 1 to 100 gives a natural range that matches real camera motion, and 101 to 300 gives overdrive streaks for cinematic footage. Hotkeys adjust strength in 5 percent steps and can be rebound, and the sample count grows as streaks get longer, so long smears stay smooth without spending frames on small motions.

The mod is published for Fabric only, for 1.21.11, and it is client-side only, so servers run without it. It is open source under the GNU Lesser General Public License v3.0 only, with source code available, and the author notes it is meant to sit alongside other rendering mods.