Since I struggled a bit to install these addons to Minecraft and get them to work together, I thought I would jot down a quick howto for others on how to get this working without any hassle.
Download:
For all downloads: make sure to get the version that matches your minecraft version (1.14.4 for me at the moment)!
Download all of the following to f.ex. your Downloads-folder:
- Optifine from: https://optifine.net/downloads
- OptiFabric from: https://www.curseforge.com/minecraft/mc-mods/optifabric/files
- ReplayMod from: https://www.replaymod.com/
- Fabric (For Vanilla) from: https://fabricmc.net/use/
- Fabric API from: https://www.curseforge.com/minecraft/mc-mods/fabric-api/files
- A static linked build (probably 64 bit) of ffmpeg from: https://ffmpeg.zeranoe.com/builds/
The installation:
- Double-click the fabric-installer*.exe and click on install
- Double-click the OptiFine*.jar and choose extract. Save the MOD to f.ex. your Downloads folder
- Go to the start-menu and type %APPDATA% and click enter, and you will get an explorer-window which should contain .minecraft – go into that folder, and make a new called “mods”.
- Copy the following files from your Downloads to the mods-folder you just created:
- fabric-api*.jar
- optifabric-*.jar
- OptiFine*MOD.jar (not the installer, but the extracted mod-file)
- replaymod*.jar
- Extract the ffmpeg you downloaded to %APPDATA%\.minecraft so it becomes .minecraft\ffmpeg\bin
Done. You will have a new choice in the dropdown in the vanilla launcher you can use to start Minecraft with Fabric and Replaymod + OptiFine.