The TASRecorder Mod is an addition to the TASTickratechanger and TASTools by @ScribbleLP. Download BOTH of them It records at 60 fps depending on your Tickrate and then speeds it up without the use of an Video Editing software.
This does not support Sound!
Download the newest Release from the Releases Page. (warning: releases below 1.2.1 require ffmpeg!) Linux, Mac and Windows compatible In your world, run the command /record, to start the recording. This will automatically set your tickrate to 1 Run the command again, and it will stop the recording. The Generated File will be under Videos. Install TASTickrateChanger!