Append multiple 3GP files to one another in an order that you specify. Height and width of video files must be consistent in order to join. Save result as a new file.

• Join (Merge, Combine) Multiple AVI Files Into One Software 7.0
  Append multiple AVI files. Height and width of files must be identical in order to join. Save result as a new file.

• Join (Merge, Combine) Multiple MOV Files Into One Software 7.0
  Append multiple MOV files to one another in an order that you specify