2007-11-07, 16:52 | Link #21 |
Oblivious
Fansubber
Join Date: Jul 2007
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I'm sorry, I sort of generalized when I said "Interlacing". While Telecine (specifically a 3:2 pulldown and its varients) is the most commonly used way to convert FILM->NTSC, its not the only method there is. There is also a Telecine pattern (2^12:3) used to convert FILM->PAL that does not involve speeding up the audio.
Last edited by Skyward; 2007-11-07 at 16:58. Reason: Grammar |
2007-11-07, 16:57 | Link #22 | |||
Banned
Join Date: Nov 2003
Location: Hamburg
Age: 54
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So, the required process isn't just to interlace the full frames, but also to raise the framerate by 6 frames per seconds. This process is called "3:2 pulldown" and done by introducing duplicates into the sequence of half-frames (fields). Quote:
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2007-11-14, 09:51 | Link #24 |
Junior Member
Join Date: Jun 2007
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I'm fighting with such a piece of crap right now. Its really bad you have to face three problems: Ghosting, judder and bad flickering...
actually I wanted to ask another question (that might be stupid): Is there anything Yatta can do what you can't do with avisynth? I mean should I learn to use Yatta or am I fine just with avisynth? |
2007-11-14, 10:40 | Link #25 |
makes no files now
Join Date: May 2006
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Uhm... AviSynth is a frame serving application, and YATTA is a tool for IVTC and video clean up tasks. Somewhat two different things. If you want me to answer your question, then I guess a close answer would be "yes". Certain tasks that YATTA allows you to do are not easily achievable with just AviSynth itself (for example, freezeframing, sectioned filtering and some others - and of course the IVTC part). And it might be a good idea to learn how to use it, however don't count on being 100% sane after the process.
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2007-11-14, 17:09 | Link #26 |
Excessively jovial fellow
Join Date: Dec 2005
Location: ISDB-T
Age: 37
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Eh. YATTA is just a severely over engineered and highly obfuscated GUI for Avisynth in general and TIVTC/decomb in particular, really. All it does is making it easy to write ridiculously long and complicated Avisynth scripts that you'd never write otherwise (plus save some override files for fieldhint, TIVTC and/or decomb).
Granted, it does have some pretty nifty automated fieldmatching improvement logic (pattern guidance in particular) and tools (bitrate calculator/cropping & resizing etc.) that don't exist in Avisynth, but in terms of what you can "do" to video it has the exact same limits as Avisynth since all it does is produce Avisynth scripts.
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2007-11-14, 23:01 | Link #27 | |||
Member
Join Date: Oct 2006
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Sectioned Filtering - Not hard with a little helper function I wrote: Code:
function Replace(clip input, clip replace, int startFrame, int endFrame) { first = input.Trim(0,startFrame-1) second = input.Trim(endFrame+1,input.framecount-1) return startFrame == 0 ? (replace+second):\ (first+replace+second) } Code:
filtered = Trim(500,1000).FFT3DGPU() Replace(filtered,500,1000) |
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2007-11-16, 11:18 | Link #28 |
Aegisub dev
Join Date: Sep 2004
Location: Stockholm, Sweden
Age: 39
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Unearthly, correct that freezeframing and sectioned filtering *by themselves* aren't very complicated, but the hard part of it is picking the right frame numbers to do it on, and that's where YATTA comes in handy, since it's a graphical interface for it: find the right frames and press the right keys, instead of zooming around in VDub, switching to Notepad or whatever and then entering the frame numbers manually. It's not hard, it's just much more tedious.
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