 Once the filming was completed , more than 20 two @-@ hour Beta SP video tapes of footage that had to be edited down to fit the actions of the game . The programming included editing the original video footage , and mixing the rendered images of doors , drawers , chairs and other objects into the footage frame @-@ by @-@ frame , which was necessary for more than 100 scenes . The game required more polishing and fine @-@ tuning than most games of its time due to the large number of video components , and the programmers had to determine the desired frame rate , data transfer rate and desired resolution of the video elements . Another challenge for the game was CD resource management . Since many of the scenes in the game could be repeated in multiple chapters , some pieces of the code were written onto several different CDs to reduce the number of times the player had to swap discs , an unusual practice for computer games at the time . The programmers attempted to minimize the number of times a disc had to be swapped in the middle of a chapter . The final game was on seven discs , a large amount for a computer game , and more than the four or five discs originally expected during one point in the development . 
