Download the Media Cope software from SI database.
To cut a video :- Open the video in the software and select the positions from where you want to start and end a new clip. You can also see a preview of the selected file by Play Selected. If everything is good then save your final file in the desired format and quality.
To join video files :- First add files to be joined by clicking on Add button. Select the output format and the quality. Click join, provide final output file name and here we go, files are joined.