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View Full Version : "NTSC Filter" for Avisynth?

shoopdabloop
25th June 2009, 06:14
Nestopia, a Nintendo Entertainment System (NES) emulator, comes with a filter called the "NTSC Filter", which emulates how the game would look on an actual NTSC TV set. Example:
(i apologize for the slight darkness, i think it has something to do with my photoshop settings)

Bilinear 2x resize only (no NTSC filter)
http://img205.imageshack.us/img205/4439/ntscbefore.png

Bilinear 2x resize + NTSC filter
http://img145.imageshack.us/img145/66/ntscafter.png

NTSC filter settings
http://img524.imageshack.us/img524/2010/ntscdialog.png
(to show what the filter is actually doing; these settings here are the same as the default "composite" settings)

Anyway, I was just wondering if there was a filter like this for Avisynth, because I would really like to see what some of my live action footage would look like after being processed with such a filter.

Also, I'm pretty sure these are the "Artifacts" the filter speaks of...
(the color things)

http://img221.imageshack.us/img221/6695/ntscartifacts.png
hanfrunz
25th June 2009, 09:45
Nestopia is open source. You can download the source at http://nestopia.sourceforge.net/. There is a folder called source\nes_ntsc with everything someone would need to port it to an avisynth filter. :)
Mug Funky
25th June 2009, 10:03
haha. a friend of mine is trying to do this in Flash, but including bad sync in overbright areas to the right of frame, timebase jitter and CRT grille patterns.

best of luck... i'd probably just point a camera at a screen fed with composite.
shoopdabloop
25th June 2009, 10:16
Nestopia is open source. You can download the source at http://nestopia.sourceforge.net/. There is a folder called source\nes_ntsc with everything someone would need to port it to an avisynth filter. :)

hopefully someone can do just that.

another plan i had to give my footage an "analog" look was to do a physical pc->dvd->vhs->dvd->pc pass, (i would take out certain steps if i had the right equipment) but i would prefer to use an avisynth filter to give a similar feel.
Mug Funky
25th June 2009, 11:01
haven't you got a TV-out? just go out composite into the DVD recorder's input. save a lot of time.

if i were to do it here i'd use 2 edit suites in tandem, one playing, one capturing... but then you need 2 edit suites to do that :)
shoopdabloop
25th June 2009, 11:14
assuming my pc has a tv-out i could do that, but it would be a tiny bit difficult to use the dvd recorder without a screen (no TVs near my computer at all) unless the bare default settings worked fine, or i could tweak and save them using a tv screen upstairs.

then again, i probably have all of this mixed up.