Template:Interlaced Video - Revision history

Aradan at 00:51, 6 October 2012

2012-10-06T00:51:44Z

Aradan at 00:49, 6 October 2012

2012-10-06T00:49:24Z

Aradan at 00:46, 6 October 2012

2012-10-06T00:46:46Z

Aradan at 23:24, 5 October 2012

2012-10-05T23:24:03Z

Aradan at 22:42, 5 October 2012

2012-10-05T22:42:46Z

Aradan at 02:06, 5 October 2012

2012-10-05T02:06:38Z

Aradan: Created page with "
---- ;Interlaced Video *display method that consists of drawing only alternating lines of video signal during a single display refresh cycle :'''Example:''' Frame 1 of a vi…"

2012-10-05T02:04:57Z

Created page with "<br> ---- ;Interlaced Video *display method that consists of drawing only alternating lines of video signal during a single display refresh cycle :'''Example:''' Frame 1 of a vi…"

New page

<br>
----
;Interlaced Video
*display method that consists of drawing only alternating lines of video signal during a single display refresh cycle
:'''Example:''' Frame 1 of a video signal is broken up into many horizontal lines of pixels. Lines 1, 3, 5, 7... of the image are drawn by the TV during its first refresh cycle, which we'll call Frame 1a. At the TV's next refresh cycle, Frame 1b, it draws lines 2, 4, 6, 8... of Frame 1. It then draws lines 1, 3, 5, 7... of the next frame of the video, then lines 2, 4, 6, 8... and so on for each successive frame.
*common for analog video, especially over a Coaxial, RCA, or S-Video cable
*common resolutions include '''480i''' (analog "Standard Definition" TVs), '''1080i'''
*vertical resolution effectively halved because at any given moment only half the pixels in a given column are active
*refresh rate of the display is effectively halved
*video quality is blurry and faint compared to [[Template:Progressive Scan|Progressive Scan]]
*unpleasant 'combing' pattern is sometimes visible in scenes with lots of action, horizontal motion, or fast camera panning
*de-interlacing can reducing appearance of 'combing'

[http://en.wikipedia.org/wiki/Interlaced_video External Wikipedia Link]

[[Category:A/V]]

@@ Line 1: / Line 1: @@
 <br>
 ----
 ;Interlaced Video
 *display method that consists of drawing only alternating lines of video signal during a single display refresh cycle
 :'''Example:'''  Frame 1 of a video signal is broken up into many horizontal lines of pixels. Lines 1, 3, 5, 7... of the image are drawn by the display during its first refresh cycle, which we'll call Frame 1a.  At the display's next refresh cycle, Frame 1b, it draws lines 2, 4, 6, 8... of Frame 1.  It then draws lines 1, 3, 5, 7... of the next frame of the video, then lines 2, 4, 6, 8... and so on for each successive frame.
-*common for analog video, especially over a Coaxial, RCA, or S-Video cable
+*common for analog video, especially over a [[A/V_Glossary#Coaxial|Coaxial]], [[A/V_Glossary#RCA|RCA]], or [[A/V_Glossary#S-Video|S-Video]] cable
-*denoted by an '''i''' at the end of a display format, e.g. '''480i''' or '''1080i'''
+*denoted by an '''i''' at the end of a [[A/V_Glossary#Display_Formats|display format]], e.g. '''480i''' or '''1080i'''
 *vertical resolution effectively halved because at any given moment only half the pixels in a given column are active
 *video quality is blurry and faint compared to [[A/V_Glossary#Progressive Scan|Progressive Scan]] video

@@ Line 7: / Line 7: @@
 *denoted by an '''i''' at the end of a display format, e.g. '''480i''' or '''1080i'''
 *vertical resolution effectively halved because at any given moment only half the pixels in a given column are active
-*video quality is blurry and faint compared to [[Template:Progressive Scan|Progressive Scan]] video
+*video quality is blurry and faint compared to [[A/V_Glossary#Progressive Scan|Progressive Scan]] video
 *unpleasant 'combing' pattern is sometimes visible on in scenes with lots of action, horizontal motion, or fast camera panning
 *de-interlacing can reducing appearance of 'combing' when an interlaced video is played back on a progressive scan display

@@ Line 5: / Line 5: @@
 :'''Example:'''  Frame 1 of a video signal is broken up into many horizontal lines of pixels. Lines 1, 3, 5, 7... of the image are drawn by the TV during its first refresh cycle, which we'll call Frame 1a.  At the TV's next refresh cycle, Frame 1b, it draws lines 2, 4, 6, 8... of Frame 1.  It then draws lines 1, 3, 5, 7... of the next frame of the video, then lines 2, 4, 6, 8... and so on for each successive frame.
 *common for analog video, especially over a Coaxial, RCA, or S-Video cable
-*common resolutions include '''480i''' (analog "Standard Definition" TVs), '''1080i'''
+*commonly denoted by an '''i''' at the end of a display's nominal resolution, e.g. '''480i''' or '''1080i'''
 *vertical resolution effectively halved because at any given moment only half the pixels in a given column are active
 *refresh rate of the display is effectively halved