I have been using Windows Movie Maker (the 2012 version, not sure if it's the latest) to edit my videos and upload them on YouTube. I have noticed that the YouTube videos that I uploaded after editing them with Movie Maker all have this annoying, strange hissing and ghostly sounds. Recently, I found out that they only happen in the saved videos from Movie Maker and even when I play them from there. When I played my videos before putting them in Movie Maker, they do not have the strange sounds at all. I used my phone camera and action camera for the videos and they all make the hissing sound only after editing them on Movie Maker.

Is there a way to fix this? If not, what other editing programs can I use to trim or combine video files to upload them on YouTube?

Any help is greatly appreciated.

Mike