Problème cadre de rognage vidéo qui apparait

Hi Amanda, 

Thanks for reaching out!

This is the first time I've heard of this behavior, so there's a chance that this might be specific to your project file. I'd like to ask a few questions to help clarify your experience:

• Are you able to replicate the behavior on a new project file using a different video?
• Do you have the option of adding the video from file instead of embedding it? If yes, does this make a difference with the performance?
• Are you working locally when previewing your project file? 

Additionally, I'd like to test one of your project files to see if I'll be able to replicate the behavior on my end. Would you be willing to share a copy of your project file here or in private by opening a support case for testing? We'll delete it when we're done!