However, that would have meant re-encoding the entire 4GB video and waiting another twenty minutes to fix five seconds of footage. You drag a video into the window or open it through the File menu, and it functions much like a standard video player. I scrubbed to the beginning of the video and pressed the I key to set the start of my first segment. This is really the editor for avoiding actual editingI would not use LosslessCut to build a polished video, but that is exactly why it stays useful. Keyframe limitations occasionally require a small adjustment or another tool, but LosslessCut is the video editor I use when the footage is already fine, and I merely need less of it.