deinterlacing and scaling - Joe Murphy Jr

Video Asylum

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deinterlacing and scaling

Posted by Joe Murphy Jr (A) on September 17, 2005 at 17:56:42

In Reply to: Re: what resolution from the dvd player? posted by Steve Schell on September 11, 2005 at 14:41:32:

The simple explanation is that deinterlacing combines the two fields of interlaced video into a frame. A progressive display shows the entire frame at one time, instead of showing the odd lines then the even lines (it's done quckly so your eye doesn't easily notice that it is only seeing half the information at a time) as an interlaced display does. A progressive display will deinterlace (think of this word as meaning "reconstructing") an interlaced signal before it is displayed and will just pass through a progressive signal (since it's already in the proper format for display) such as 480p and 720p.

Whether an upscaling player provides any real advantage is the subject of much debate, but here's the real (potential) advantage. Some HD displays, even ones that cost a fortune, have poor scalers and feeding a 720x480 signal to one of them just results in an OK picture when the image is scaled to the displays native resolution (ie; 1280x720, 1366x768, 1920x1080, etc). However, if you have a player that upscales and its scaler is better than the one in the display, you will see a benefit in the form of an improved picture (but it will usually be subtle, not a night/day difference).

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Follow Ups Full Thread

Topic - Aspect ratio horrors - Steve Schell 08:38:59 09/04/05 (13)

Thank you - Steve Schell 13:46:53 09/11/05 (0)

Reason to strangle Best Buy salesmen #999 - Ben 11:46:28 09/09/05 (2)

Re: Reason to strangle Best Buy salesmen #999 - Steve Schell 13:38:39 09/11/05 (0)

Sears salesperson thought tv's 16:9 w/bottom mounted speakers were all 4:3 ! - FF 12:22:22 09/10/05 (0)

Re: Just curious - rico 09:03:57 09/08/05 (0)

what resolution from the dvd player? - Joe Murphy Jr 19:22:54 09/06/05 (2)

Re: what resolution from the dvd player? - Steve Schell 14:41:32 09/11/05 (1)

deinterlacing and scaling - Joe Murphy Jr 17:56:42 09/17/05 (0)

Re: Aspect ratio horrors - unclestu52 13:39:32 09/06/05 (0)

My Sony 42" plasma from my Denon 2910 has dozens of possible changes to the aspect ratio zoom/squeeze etc - Elizabeth 08:45:13 09/06/05 (0)

Re: Aspect ratio horrors - sam9 19:39:00 09/05/05 (0)

Re: Aspect ratio horrors - gerardk 00:04:01 09/05/05 (1)

Re: Aspect ratio horrors - Steve Schell 08:16:43 09/05/05 (0)

Follow Ups

deinterlacing and scaling - Joe Murphy Jr 17:56:42 09/17/05 (0)

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