-This is the most effective deinterlacing tool when the footage is a video transfer of a film. This can be used to solve the problem, i.e., undo the damage caused by making film into a TV broadcast. That process came about because film is at $24\,fps$ while TV is at $29.97\,fps$ and fields are at $60$. So the film was converted from 24 fps to $60\,fps$. Roughly speaking, converting every $4$ frames into $5$ frames plus a slight slow down in speed. Then the $60\,fps$ was down-sampled to $30\,fps$ by extracting odd and even lines and interlacing the lines. This process is referred to as \textit{three-two pull down} ($3:2$ pull down) in filmmaking and television production for the post production process of transferring film to video.
+This is the most effective deinterlacing tool when the footage is a video transfer of a film. This can be used to solve the problem, i.e., undo the damage caused by making film into a TV broadcast.
+That process came about because film is at 24\,\emph{fps} while TV is at 29.97\,\emph{fps} and fields are at 60.
+So the film was converted from 24\,\emph{fps} to 60\,\emph{fps}.
+Roughly speaking, converting every 4 frames into 5 frames plus a slight slow down in speed.
+Then the 60\,\emph{fps} was down-sampled to 30\,\emph{fps} by extracting odd and even lines and interlacing the lines.
+This process is referred to as \textit{three-two pull down} ($3:2$ pull down) in filmmaking and television production for the post production process of transferring film to video.