Introduction and general concepts

Motion Capture (aka "mocap") is a Minecraft mod for recording movements and actions of player and surrounding it entities. Unlike Replay Mod or Flashback it's server-side mod, which means playbacks can interact with real world. Fabric build is not even required to be installed on a client when working on multiplayer servers, although it's required by some features (as of 1.4, it's only required by skins "from files")

Terms and concepts used in mod and documentation:

• Recording - it can refer to two things, either current recording/tracking of player actions, or saved file with recorded player actions. To manage current recordings use /mocap recording command and to manage saved recordings use /mocap recordings (in plural form). Recording (current or saved) consists of only one player in one specific dimension, recorded without pauses. It may contain multiple non-player entities.
• Scene - it consists of multiple recordings and/or other scenes with optional playback modifiers. It provides a simple way of mixing multiple recordings with different player names, skins, delays or other applied modifiers.
• Scene element - it refers to single element of a scene which is single recording or another scene.
• Playback - recreating/playing back single recording or multiple recordings when using scene. Playback is usually finite, but can be infinite when playing back currently recorded recording or using time loops. You can start and manage playbacks with /mocap playback command.
• Playback modifiers - often simply referred as "modifiers". They carry additional information how recording or scene should be played. This includes basics like player name or skin but also more complex stuff like position transformations or time loops. Modifiers can be applied directly to playback or using scenes.