Difference between revisions of "NTSC filters"

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These replicate the cables used to connect the system to the TV. They vary in quality, with the lowest being RF, then composite, then s-video and RGB (scart) being the highest quality. Many emulators have NTSC filters built into them. They can also be separately downloaded in .filter format. They were developed by [http://slack.net/~ant/libs/ntsc.html blargg]. Possibly others? More history.
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These replicate the cables used to connect the system to the TV. They vary in quality, with the lowest being RF, then composite, then s-video and RGB (scart) being the highest quality. Many emulators have NTSC filters built into them. They can also be separately downloaded in .filter format. They were developed by [http://slack.net/~ant/libs/ntsc.html blargg]. Other NTSC shaders have been created which do not rely upon blargg's shaders.
  
 
The level of blur in RF and composite cables are needed for [[dithering]] to work. S-video, and RGB are too clear to produce dithering.
 
The level of blur in RF and composite cables are needed for [[dithering]] to work. S-video, and RGB are too clear to produce dithering.
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==Description==
 
==Description==
 
 
  
 
===RF===
 
===RF===
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The highest quality possible.
 
The highest quality possible.
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==Non-blargg NTSC==
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https://github.com/libretro/common-shaders/tree/master/ntsc
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Blargg's NTSC shaders are powerful, and well made, but they are very system specific. The standalone .fliter files work at resolutions typically found in NES and SNES games, and cause problems when used on systems that use other resolutions. For this reason, there have been attempts at making an NTSC shader that can work on many different consoles and resolutions.
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===Maister has created an NTSC shader using the .cg format. Insert screenshots.===
  
 
<gallery position="center" captionalign="center">
 
<gallery position="center" captionalign="center">

Revision as of 08:48, 26 July 2013

These replicate the cables used to connect the system to the TV. They vary in quality, with the lowest being RF, then composite, then s-video and RGB (scart) being the highest quality. Many emulators have NTSC filters built into them. They can also be separately downloaded in .filter format. They were developed by blargg. Other NTSC shaders have been created which do not rely upon blargg's shaders.

The level of blur in RF and composite cables are needed for dithering to work. S-video, and RGB are too clear to produce dithering.

SNES games make use of the color correction in these cables.

Download

Win32 Win64  Linux32  Linux64 MacOS

Description

RF

The lowest quality. Very blurry.

Composite

Higher quality than RF, but still very blurry. This is what most systems used as default.

S-video

Much sharper image.

RGB

The highest quality possible.

Non-blargg NTSC

https://github.com/libretro/common-shaders/tree/master/ntsc

Blargg's NTSC shaders are powerful, and well made, but they are very system specific. The standalone .fliter files work at resolutions typically found in NES and SNES games, and cause problems when used on systems that use other resolutions. For this reason, there have been attempts at making an NTSC shader that can work on many different consoles and resolutions.

Maister has created an NTSC shader using the .cg format. Insert screenshots.

Emulators

Many emulators have them built in.

Emulator System NTSC filters Notes
Nestopia NES
puNES NES
zsnes SNES
Snes9x SNES
Genesis Plus GX Sega consoles
Kega Fusion Sega consoles