[crossfire3636]

Is there a video editing app on iphone 5 that will remove unwanted sound?

[Just_Me_D]

The ones I've read about mentions the ability to add sound, mainly music, but the descriptions are in general terms. You may have to download and test a few, at least the free ones.

[crystal0092]

usually I edit videos on my pc with the mp4 editor ShowBiz: Edit MP4 Videos Files Greatly - Use MP4 Editor to Make MP4 Files