This mod was originally made by BarracudaATA, then updated by Daipenger and at last updated and maintained by McHorse with contributions of MiaoNLI, Chryfi, and Sekwah.

A Minecraft mod for offline rendering and video capturing. Demo Video :Butter smooth 1080p60, supersampled from 4K, up to 64 chunks render distance and up to 4096x4096 shadow maps. Recorded on a single GTX 750 Ti. Impressive.

Current features:

Records the game, both color and optionally alpha or depth (8bit, 16bit or 32bit float variant)
Records motion blur, not just of the camera but of all objects moving.
Can record 360 degrees footage
Export tracking keyframes for After Effects. They can be imported into Blender using this add-on by MiaoNLI.
Automatically exports every frame as TGA or encodes it to a single mp4 video file (h264, yuv420p colour format) using FFMpeg
Synchronizes the game engine and Optifine's/karyonix's shader pipeline from real time to the video recording framerate
Possible to set any resolution for recording, even higher than your screen resolution
Brings two techniques to heavily accelerate chunk loading during recording

For users

Installing and using:

Download the mod and load it with Forge.
You can start/stop recording by pressing F4 (you can also press Shift + F4 for advanced configuration) or using "/minema enable" and "/minema disable". If you are a mod developer and want to integrate with Minema, just using these commands might very well be enough for you.

Minema can also be configured quite substantially: Mods -> Minema -> Config. If you hover over one option it will display the explanation for this option. If you need further help, feel free to contact me or open an issue if you think that an explanation needs improvement.

There are several camera path tools that work with Minema: Something simple is BauerCam or if you need something more fancy Aperture.

Setting up FFMpeg: (you have to do this if you want mp4 files)

Linux users should already be able to install FFMpeg using their favourite package manager. Otherwise you will find builds on https://www.ffmpeg.org/download.html#build-linux.

Windows users can download a build here: FFMpeg. Unpack ffmpeg.exe (it is in bin/ in this archive) and move it to the root minecraft install folder. (where you would also find options.txt) You can also move it to somewhere else and change the encoder path if you prefer it that way.

Make sure to enable 'Use video encoder'. If you have trouble setting up FFMpeg or Minema, make sure to check out this video:

For developers

This setup uses Gradle like any other Forge mod, so you should feel right at home.

If you are totally new to Forge: In a nutshell you should execute the task "gradle setupDecompWorkspace" first in order to get decompiled minecraft code with Forge patches. But I always recommend just reading one of the starter tutorials.