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Old 27th June 2007, 13:07   #1  |  Link
nomis1804
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deinterlacing 1080i with eedi2 and tdeint errors

I am trying to deinterlace a 50fps h264 1080i broadcast to 25fps using eedi2 and tdeint. Here is my avs script:

Code:
LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\TIVTC.dll")
LoadPlugin("DGAVCDecode.dll")

AVCSource("lcd.dga")

trim(378, 388)

edeintted = last.AssumeTFF().SeparateFields().SelectEven().EEDI2()
TDeint(edeint=edeintted)

Crop(4,0,-4,-2)

BicubicResize(960, 544)
The problem I'm having is only on a few frames with lots of motion but it's very noticeable when watching. Here is one of the frames with errors:



I'm really not sure what's going on here any help would be appreciated.
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Old 27th June 2007, 14:09   #2  |  Link
scharfis_brain
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this is due to motionmasking artifacts.

you may use yadif or securebob.

but as you are halving the resolution anyway there is no need for high quality interpolation methods.

so you could be fully satisfied with separatefields().selecteven() and horizontal ONLY resizing (do not alter the vertical pixelcount!)

also be sure to crop 1088 lines to 1080 lines before any processing!
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Old 27th June 2007, 14:21   #3  |  Link
nomis1804
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I tried separatefields().selecteven() but I was getting annoying horizontal lines which were eliminated with eedi2 + tdeint.

I will give yadif and securebob a try.

Thanks for the help
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Old 27th June 2007, 14:28   #4  |  Link
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provide an unprocessed sample clip (the demuxed h264 suffices).

normally there cannot occur lines after separatefields().selecteven()!
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Old 27th June 2007, 14:45   #5  |  Link
nomis1804
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This is the part where the lines are most noticeable, it usually seems to happen when there are flashes or lots of movement. I can give you a longer clip if you need.

http://rapidshare.com/files/39646464/test.ts.html
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Old 27th June 2007, 14:49   #6  |  Link
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how can I demux that without much hassle?
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Old 27th June 2007, 14:58   #7  |  Link
nomis1804
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easiest thing to do would be ffdshow libavc for decoding and haali (http://haali.cs.msu.ru/mkv/) for demuxing then DirectShowSource in the .avs. Is that what you were after?
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Old 27th June 2007, 15:15   #8  |  Link
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my h.264 directshow chain currently is broken (I am not able to even watch h.264 contents)
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Old 27th June 2007, 15:17   #9  |  Link
nomis1804
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OK thanks anyway. Yadif is just what I was after it looks great for the stuff I've tried it on so far
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Old 27th June 2007, 15:33   #10  |  Link
nomis1804
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This was the kind of thing I was talking about in that clip, this is after Yadif(). I'm thinking it might just be the way it was encoded though?

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Old 27th June 2007, 21:57   #11  |  Link
Atak_Snajpera
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try to use
tdeint(mthreshL=0)
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Old 28th June 2007, 02:10   #12  |  Link
halsboss
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Quote:
Originally Posted by nomis1804 View Post
Yadif is just what I was after it looks great for the stuff I've tried it on so far
Doing a search but lots of posts top trawl for the link to it ... any hint as to where you scored it ?
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Old 28th June 2007, 14:11   #13  |  Link
nomis1804
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Quote:
Originally Posted by halsboss View Post
Doing a search but lots of posts top trawl for the link to it ... any hint as to where you scored it ?
Yeah the link is tucked away right at the bottom of the page it's: http://avisynth.org.ru/yadif/yadif08.zip and you need to use Load_Stdcall_plugin("yadif.dll") to load it (had me stumped for a while).

I've just tried tdeint(mthreshL=0) and it's looking good, don't know whether to use that or Yadif now . Thanks

Last edited by nomis1804; 28th June 2007 at 14:27.
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