Yes, so basically we have one FBX and one MP4, when user click on Play then will start palying the video and FBX together, user can slowdown the video, pause, play etc. Based on the user action we have to trigger event on FBX and MP4 together and their frame sequence should synchronized.
Um, you can try to work with the currentTime property of your video which returns the current position (in seconds) of the video playback. Use this value to set the playback time of the animation action that is used to playback the respective animation clip. TBH, the API of the animation system is not intended for this use case so you have to use the following hack to ensure AnimationMixer does not alter the defined time value: