This three-part series covers the Sequencer Anim Mixer from the ground up — an experimental Unreal Engine plugin that lets you mix, layer, and blend animation sources directly inside Sequencer with proper root motion handling. Starting with a feature overview, the series moves into hands-on motion editing with mocap and library animations, then finishes with a complete gameplay-to-cinematic transition system built in UE 5.8. Whether you’re authoring cinematics, cleaning up mocap, or trying to make gameplay and cutscenes feel seamless, this series has you covered.
https://dev.epicgames.com/community/learning/courses/Jo9/unreal-engine-animation-mixer-in-sequencer-deep-dive