Video editing is the process of rearranging and manipulating video clips to create a new work. It involves cutting segments (trimming), re-sequencing clips, and adding effects like transitions and color adjustments. Essentially, you take various pieces of video, sometimes from different shots or angles, and combine them into a final piece that tells a story or supports a message. It's like putting together a puzzle where the pieces are your video clips, and the completed picture is your finished