Hey TiagoLing,
Try using a different encoded media file type to see if that resolves your issue. You mention you are getting a silent crash, so I can assume you are not presented with a Crash Reporter Dialog window?
We do mention a disclaimer about this feature being still in the experimental stages, and it can be dangerous to place importance on the feature itself within your project. With that said, I am happy to help you troubleshoot until you can get a solution.
Thank you,