Ok, I got a problem with Windows Live Essentials 2012 Movie Maker. I know MS has stopped the support for it, but I'm still using it and I need some help. So please, if someone knows how to fix it please tell me.

I started a project and finished it, and exported it to an mp4 file. There were more than 70 items in the project while many items are from the same source video (it is very long, an hour and 20 minutes or so). After exporting it, I found that the videos' timings are not correct. 

In the app I cropped the video's 30th second to 35th second. However, after exporting it, it became the 32nd second to 37th second (not sure exactly how much time it delays).

Thanks for any help.

***Moved from: Apps on Windows 10 / Other Windows apps / Music & Video***