Quote:
Originally Posted by LoRd_MuldeR
Decomb Telecide doesn't deinterlace. It just re-orders the fields to undo Telecine or to fix field-shifted streams.
After that process we (ideally) get the original progressive frames back. No interpolation does happen.
Of course Decomb Telecide only works with Telecined or filed-shifted material. It does not work on "true" interlaced video at all!
In your case the video appears to be field-shifted and Decomb Telecide does restore the video pretty well.
Unfortunately there are some filed distortions, which cause these minor combing artifacts shown in your screenshot.
Putting a deinterlacer (e.g. Yadif) behind Decomb Telecide removes those artifacts.
Of course you could skip the Decomb Telecide filter and only use Yadif. This should remove the combing too.
But you probably get better quality, if the deinterlacer bases its decisions on the "fixed" stream instead of the field-shifted one.
The same way we could simply deinterlace a Telecined stream, but we certainly shouldn't do that!
BTW: Maybe one of the Avisynth gurus could write a script to fix your field distortions in a smarter way 
Appending Yadif is the quick and dirty solution to clean-up the remaining combing... |
OK, I think I understand. I guess the problem is I'm not
really sure how Yadif is working on the material. I suppose it doesn't matter too much as long as it does the job!
It seems my main problem is this field distortion issue. I've tried searching for some filters to address it, but haven't found anything yet. This must be a common problem though - especially with old telecine tapes? Which gurus should I appeal to?
UPDATE:
I think I've found the perfect solution! It's an AviSynth plug called "Vinverse" - the description reads "An effective Function against (residual) combing, by Didée. Useful after deinterlaceing." Well, I've tried it and it seems to work like a charm. My residual combing problems appear to be gone and edges are smooth!