Displaying Movie Content On A TV
As movies are usually filmed at a rate of 24 frames per second, while television sets operate at different rates, some conversion is necessary. Different techniques exist to give the viewer an optimal experience.
The combination of content production, playback device, and display device processing may also give artifacts that are unnecessary. A display device producing a fixed 60 frame/s rate cannot display a 24 frame/s movie at an even, judder-free rate. Usually, a 3:2 pulldown is used, giving a slight uneven movement.
While common multisync CRT computer monitors have been capable of running at even multiples of 24 Hz since the early 1990s, recent "120 Hz" LCD displays have been produced for the purpose of having smoother, more fluid motion, depending upon the source material, and any subsequent processing done to the signal. In the case of material shot on video, improvements in smoothness just from having a higher refresh rate may be barely noticeable.
In the case of filmed material, as 120 is an even multiple of 24, it is possible to present a 24 frame/s sequence without judder on a well-designed 120 Hz display (i.e., so-called 5-5 pulldown). If the 120 Hz rate is produced by frame-doubling a 60 frame/s 3:2 pulldown signal, the uneven motion could still be visible (i.e., so-called 6-4 pulldown).
Additionally, material may be displayed with synthetically created smoothness with the addition of motion interpolation abilities to the display, which has an even larger effect on filmed material.
"50 Hz" TV sets (when fed with "50 Hz" content) usually get a movie that is slightly faster than normal, avoiding any problems with uneven pulldown.
Read more about this topic: Refresh Rate
Famous quotes containing the words displaying, movie and/or content:
“One of the grotesqueries of present-day American life is the amount of reasoning that goes into displaying the wisdom secreted in bad movies while proving that modern art is meaningless.... They have put into practise the notion that a bad art work cleverly interpreted according to some obscure Method is more rewarding than a masterpiece wrapped in silence.”
—Harold Rosenberg (1906–1978)
“The talk shows are stuffed full of sufferers who have regained their health—congressmen who suffered through a serious spell of boozing and skirt-chasing, White House aides who were stricken cruelly with overweening ambition, movie stars and baseball players who came down with acute cases of wanting to trash hotel rooms while under the influence of recreational drugs. Most of them have found God, or at least a publisher.”
—Calvin Trillin (b. 1935)
“Thoughts tending to content flatter themselves
That they are not the first of fortune’s slaves,
Nor shall not be the last, like silly beggars
Who, sitting in the stocks, refuge their shame
That many have and others must sit there,
And in this thought they find a kind of ease.”
—William Shakespeare (1564–1616)