Video small jump on Storyline timeline

Hi, heroes. Here I am creating some courses using Storyline to produce LMS content and Adobe Animate to show some videos with move characters and objects into project. This videos were exported from Animate and encoding with Adobe Encoder at MP4 with media speed bits. 

My problem is how this videos runs on Storyline. Most of them (or all in this case) show a small jump where it starts. So, question is How could I resolve that? Is that a problem from Animate? Is a configuration problem from videos? Is there something to do on Storyline? 

I am attaching LMS project to show problem.

Please, help me.

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