The problem with this is that it can only cut on i-frames which depends on the way your file was encoded. A lot of cameras encode around 1 i-frame per second so

The problem with this is that it can only cut on i-frames which depends on the way your file was encoded. A lot of cameras encode around 1 i-frame per second so that means that you can not accurately cut your videos from say 0.5 to 2.5, you must cut from 0 to 3. This may or may not be a big deal for your specific need