tdecimate producing shadow/echo effects

[Mizra]

Hi,

I have a short clip (identified as partially film) with a hard telecined looking 2nd half. After 'Analyze' MeGUI produces a script with the following content:

LoadPlugin("C:\small Programs\MeGUI\tools\avisynth_plugin\TIVTC.dll")
tfm(order=1).tdecimate(hybrid=3)

But if that video gets processed it occasionally produces echoes on movements looking like this:
http://www.mediafire.com/?9jthd99dk7cehjb#1
which are not in the original video.
If I skip the 'tdecimate' part from the script the result is fine.

Is it ok to skip 'tdecimate'? I think I read that it is necessary to get a complete detelecined video. But I don't even know if I really need that. (I'm doing only playbacks on computer)

Can you give advise on how to handle this?

Thanks!

[-TiLT-]

hybrid=3

hybrid -

Controls how or if video sections (30p) should be dealt with. Possible
settings:

0 - no handling
1 - blend decimation of 30p sections into 24p and leave 24p untouched (modes 0 and 1)
2 - vfr via mkv w/ timecodes file output (modes 3 and 5)
3 - blend conversion of 24p sections into 30p and leave 30p untouched (modes 0 and 1)

* The hybrid option is not used when mode = 2 or mode = 4, and hybrid > 0
is only currently supported for cycleR = 1!

Default: 0 (int)

What you see in your picture is a blend.

Think of a blend like a computer generated motion blur.

Some peoples eyes tend to ignore blends. I see them and think they are disturbing.

There are several ways to solve this.

1. don't use tdecimate and consequently live with duplicate frames and eventually judder (Output 29.97fps)
2. use hybrid=2 and encode to a variable framerate mkv
3. use hybrid=1 to restore the original 23.976fps of the telecined part and blendconvert 29.976fps to 23.976fps (Output 23.976fps)
4. convert framerates motion adaptive using mvtools for blendless smooth movement.