This is how to export .mp4 video files out of Unreal when rendering from sequencer.
https://dev.epicgames.com/community/learning/tutorials/eGpq/unreal-engine-unreal-mp4-movie-render-queue
This is how to export .mp4 video files out of Unreal when rendering from sequencer.
https://dev.epicgames.com/community/learning/tutorials/eGpq/unreal-engine-unreal-mp4-movie-render-queue