Trimming refers to deleting scenes from videos by cutting and trimming, rearranging and adding transitions, etc. When we talk about Smart Trim, it takes things up a notch by using an advanced processing AI algorithm, which learns to auto-select the scenes or clips based on workflow. One such example is being able to delete scenes using the volume or by using certain human portraits instead of just manually going through everything yourself. UniConverter is a very good example of one of the best tools to smart trim videos. Others like Adobe Premiere Elements can also trim based on people or activities in a video.