Frame - Revision history

DavidB4-bot: /* top */Spelling/Grammar Check, typos fixed: and and → and

2016-07-18T17:04:18Z

top: Spelling/Grammar Check, typos fixed: and and → and

DavidB4-bot: /* top */clean up & uniformity

2016-06-27T07:16:18Z

top: clean up & uniformity

WesleyS: link to de-orphan

2009-02-15T21:02:36Z

link to de-orphan

Elkman: NTSC is actually 29.97 frames per second, not 30; mention 2:3 pulldown

2008-03-12T15:15:57Z

NTSC is actually 29.97 frames per second, not 30; mention 2:3 pulldown

GregLarson: categorize

2007-10-24T02:01:08Z

categorize

Ed Poor: better here than in AVI - which is just a container for audio/video information

2007-10-01T16:48:23Z

better here than in AVI - which is just a container for audio/video information

New page

Video is stored in "[[frame]]s", which are snapshot images of a moving picture. These are typically captured (and shown) at a fixed rate, for example, 24 frames per second (fps). Television in the US is 30 frames per second.

Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower frame rate (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 30 fps by playing one frame twice and and the next frame 3 times.

@@ Line 1: / Line 1: @@
 Video is stored in "frames", which are snapshot images of a moving picture. These are typically captured (and shown) at a fixed rate, for example, 24 frames per second (fps). Television in the US, under the [[NTSC]] standard, is 29.97 frames per second.<ref>[http://www.andrewduncan.ws/Timecodes/Timecodes.html Time codes]</ref>
-Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower [[frame rate]] (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 29.97 fps by playing one frame twice and and the next frame 3 times.  This is done using a process named 2:3 pulldown.<ref>[http://www.zerocut.com/tech/pulldown.html Pulldown Explained]</ref>
+Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower [[frame rate]] (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 29.97 fps by playing one frame twice and the next frame 3 times.  This is done using a process named 2:3 pulldown.<ref>[http://www.zerocut.com/tech/pulldown.html Pulldown Explained]</ref>
 ==References==

← Older revision		Revision as of 07:16, June 27, 2016
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−	Video is stored in "~~[[frame]]s~~", which are snapshot images of a moving picture. These are typically captured (and shown) at a fixed rate, for example, 24 frames per second (fps). Television in the US, under the [[NTSC]] standard, is 29.97 frames per second.<ref>[http://www.andrewduncan.ws/Timecodes/Timecodes.html Time codes]</ref>	+	Video is stored in "frames", which are snapshot images of a moving picture. These are typically captured (and shown) at a fixed rate, for example, 24 frames per second (fps). Television in the US, under the [[NTSC]] standard, is 29.97 frames per second.<ref>[http://www.andrewduncan.ws/Timecodes/Timecodes.html Time codes]</ref>

	Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower [[frame rate]] (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 29.97 fps by playing one frame twice and and the next frame 3 times. This is done using a process named 2:3 pulldown.<ref>[http://www.zerocut.com/tech/pulldown.html Pulldown Explained]</ref>		Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower [[frame rate]] (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 29.97 fps by playing one frame twice and and the next frame 3 times. This is done using a process named 2:3 pulldown.<ref>[http://www.zerocut.com/tech/pulldown.html Pulldown Explained]</ref>

@@ Line 1: / Line 1: @@
 Video is stored in "[[frame]]s", which are snapshot images of a moving picture. These are typically captured (and shown) at a fixed rate, for example, 24 frames per second (fps). Television in the US, under the [[NTSC]] standard, is 29.97 frames per second.<ref>[http://www.andrewduncan.ws/Timecodes/Timecodes.html Time codes]</ref>
-Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower frame rate (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 29.97 fps by playing one frame twice and and the next frame 3 times.  This is done using a process named 2:3 pulldown.<ref>[http://www.zerocut.com/tech/pulldown.html Pulldown Explained]</ref>
+Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower [[frame rate]] (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 29.97 fps by playing one frame twice and and the next frame 3 times.  This is done using a process named 2:3 pulldown.<ref>[http://www.zerocut.com/tech/pulldown.html Pulldown Explained]</ref>
 ==References==

@@ Line 1: / Line 1: @@
-Video is stored in "[[frame]]s", which are snapshot images of a moving picture. These are typically captured (and shown) at a fixed rate, for example, 24 frames per second (fps). Television in the US is 30 frames per second.
+Video is stored in "[[frame]]s", which are snapshot images of a moving picture. These are typically captured (and shown) at a fixed rate, for example, 24 frames per second (fps). Television in the US, under the [[NTSC]] standard, is 29.97 frames per second.<ref>[http://www.andrewduncan.ws/Timecodes/Timecodes.html Time codes]</ref>
-Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower frame rate (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 30 fps by playing one frame twice and and the next frame 3 times.
+Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower frame rate (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 29.97 fps by playing one frame twice and and the next frame 3 times.  This is done using a process named 2:3 pulldown.<ref>[http://www.zerocut.com/tech/pulldown.html Pulldown Explained]</ref>
 [[Category:Television]]

← Older revision		Revision as of 02:01, October 24, 2007
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	Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower frame rate (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 30 fps by playing one frame twice and and the next frame 3 times.		Old-fashioned movies, such as World War I [[newsreel]]s, were shot at a slower frame rate (such as 16 frames per second). When these are added into a modern 24 fps movie, often they are played at the same frame rate, which speeds everything up noticeably. It is possible, of course, to program a computer to play frames at a [[variable rate]], so that the old 16 fps footage would appear at normal speed, and even 24 fps movies could play at 24 frames per second, but to save money or development time, this is rarely done. It seems to be easier to convert 24 fps to 30 fps by playing one frame twice and and the next frame 3 times.
		+
		+	[[Category:Television]]