How can I export the sequencer and the video I put in at the same fps I set

My English is not very good, hope I can make myself understood
First I set up a scene and a sequencer in UE4, the scene also include a animation I imported in. The sequencer and the animation are both at 25fps,with the blueprint I can control the time to start and end. In the overview part everything just work well, but after rendering step, the animation I put in can’t match the sequencer…

P.S. The final video is at 25fps, but the animation I put in turn out to be very weird, is like the animation was affected by the rendering time

Does anyone know how to fix these?

Thank you so much!

Can anyone help me with this problem TAT