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Old 18 Mar 2002, 11:55 PM   #1
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Question De-interlacing

Hi all,

i'm wondering... When encoding from an interlaced source, does deinterlacing guarantee better quality or is this only in some cases. I've tried it a couple of times and end up with only minor difference in quality.

Is the divx5.0 pro deinterlacer any good?

I use xmpeg4.2a (wich has no deinterlacing)

Thx Noets
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Old 19 Mar 2002, 12:01 AM   #2
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If you happen to be using thresold-based deinterlacers, make sure that you're using a value just enough to get rid of all interlacing artifacts. Too low a thresold often results in degradation of image quality (eg. blurring, reduced perception of resolution, etc.)
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Old 20 Mar 2002, 09:10 PM   #3
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Yeh, it just depends on luck! Sometimes it does produce better quality (depending on the orignal source) and sometimes it doesn't!

Techno
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Old 20 Mar 2002, 09:19 PM   #4
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I missed something earlier...

How could you call an interlaced DivX file of good quality at all? It's very unnerving to see those combing effects poking its ugly face at you for most of the time (Okay, most action scenes).

You should apply a deinterlacer so that the combing effects are gone, but make sure you follow my suggestion earlier.

p.s. If your source is NTSC, try using Inverse Telecine. Interlace effects may completely go away or is minimised so much that you will need only a thresold of around 35-40 to remove residual combing effects.

Last edited by Enchanter; 20 Mar 2002 at 09:34 PM
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Old 20 Mar 2002, 09:30 PM   #5
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Woops! Sorry, I didn't think you were talking about the combing effect! Sorry! Yeh, USE THE DE-INTERLACER!!!

I was thinking of something else, sorry people!

Techno
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