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New Member
加入日期: Apr 2001 您的住址: TAIWAN
文章: 5
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IVTC 就是3:2 PULL DOWN 的意思嗎？
請問IVTC就是3: 2PULL DOWN的意思嗎？就是dvdx說她要3:2 pull down了就是要做ivtc嗎？還是要在divx 5.02的哪裡叫她做ivtc啊？
另外24fps和23.976到底是插在哪裡啊，那百分之一的差異是怎麼回事呢？
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milkfish |
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2002-06-26, 05:51 PM
#1
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Golden Member
 
加入日期: Apr 2002 您的住址: 台灣屏東
文章: 2,563
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Re: IVTC 就是3:2 PULL DOWN 的意思嗎？
引用:
IVTC簡單的說...就是將VCD的29.976fps(NTSC)或25fps(PAL) 轉變成flim的23.976fps的逐行訊號這樣可以減少影片的Interlace現象...因此就不用再作一次Deinterlace了... 但我很少用DVDx...所以我不知道3:2 pull down是不是就是IVTC 而據我所知Divx 5.02好像沒法做IVTC吧...TMPGEnc可以做... 像我用DVD2AVI將DVD轉成VCD時...用NTSC-Film做...她就會自動幫你做IVTC了...如果你是要轉成AVI...建議先用TMPGEnc做IVTC後 再丟給VirtualDub處理...請參考射手網的教學 而24fps就是23.976fps...
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2002-06-26, 07:25 PM
#2
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Advance Member
  
加入日期: Jul 2001 您的住址: 雲の向こう、約束の場所
文章: 496
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IVTC和3: 2PULL DOWN正好相反
IVTC是把30FPS->24FPS,而3: 2PULL DOWN則是把24FPS->30FPS 3: 2PULL DOWN又叫做Telecine(TELEvision from CINEma) 和IVTC(InVerse TeleCine)正好是相反低~~~從英文來看就很明顯了 真正電影的膠捲是24FPS,但電視卻是29.976FPS interlaced,於是我們便將24FPS降低0.01%的速率變成23.976然後再做3: 2PULL DOWN(Telecine),如此一來才能在電視上撥放 了解了嗎??
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2002-06-26, 10:16 PM
#3
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New Member
加入日期: Jul 2003
文章: 4
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引用:
ntsc不是29.970吗 |
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2004-06-05, 02:30 AM
#4
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