Telecining

 

 

Introduction

The word "telecine" is derived from the words television and cinema.  Telecining is a process by which video that runs at 24 frames per second (fps) is converted to run at ~30 fps or 25 fps.  This is necessary because a television can only display video at ~30 fps (in NTSC based countries) or 25 fps (in PAL/SECAM based countries).  The telecining process is used on many types of video, such as films, most cartoons, and many other kinds of programs.

Playing a telecined video on a television will usually look okay.  However, problems can arise when capturing and playing a telecined video on a computer.  For example, certain telecining methods produce interlacing artifacts and make motion appear less smooth.  Fortunately, it is usually possible to undo the telecining process and convert a video back to its original 24 fps state.  This removes most of the interlacing artifacts, makes the video play more smoothly, and decreases the file size of the video.

Before reading the following pages, you need to have a basic understanding of fields, frames, and interlaced video.  If you do not, be sure to read my page about Interlacing first.


Table of Contents

1)  NTSC Telecine (a.k.a. 3:2 Pulldown)

2)  Inverse Telecine (a.k.a. 3:2 Pulldown Removal) on Full Resolution NTSC Video

3)  Inverse Telecine on Low Resolution NTSC Video

4)  Problems of Automatic Inverse Telecine of NTSC Video

5)  PAL/SECAM Telecine