I have a question about media texture. I used unreal engine for making a movie. frame speed error

Hello Sir,
I have a question about media texture. I used unreal engine for making a movie. There is no problem when I review my movie on unreal work place. But Movie play sequence is unstable after I try to export by using matinee. If you have any opinion, Could you mind help me how to solve unstable frame sequence on matinee export?