outlawed wrote:Why is it that everyone is so hung up on deinterlacing and IVTC in the pre-edit process of late...
Deinterlacing is an afterthough for me. My normal mode of output is the world of NTSC and as such I edit interlaced.
You just answered your own question.
If you
primarily do online distribution, you have every reason to make your video as suitable for viewing on a computer as you can. Pre-edit inverse telecining is another way of doing that. It also, in most cases, happens to be the best way of doing it.
There's nothing wrong with post-production deinterlacing or IVTC. They still work.
However, with regards to post-production IVTC...
Now I do toss my stuff out to float around the net and in those cases I will do 2 tests: deinterlace it and IVTC it with some manual adjustments. Mind you this is after I have edited field based NTSC footage.
Well, yeah. If you've done anything more than straight cuts, it can be impossible to recover the progressive video stream via post-production inverse telecine. Which is why a lot of people who aim for 'net distribution like to do it pre-edit. It's easier, and it works better.
The first which is often overlooked depends on what your goals are and what you need to accomplish in terms of production (i.e. What is primarily your use? Analog or Digital).
I think most people who produce video for both analog and digital devices understand the differences between them, and can adjust their projects accordingly. Maybe I'm wrong, though.
Anyway, you can export to multiple targets with minimal effort with the tools available these days. (Check out AVISynth and Decomb.) It's also much easier to telecine a progressive source than it is to inverse telecine a telecined source.
The second is important to understand because IVTC is only properly executed when the original source was telecined as a whole. Most anime available (barring recent releases in this discussion) were not telecined properly in a continuous manner but were rather telecined in piecemeal segments due to the cheap production nature of the industry.
Telecine can be messy and can change throughout the footage -- we know this, and there are now ways around it, in most cases. (Decomb is probably the most-used IVTC solution, precisely because it
can deal with irregular telecine and changes in telecine pattern.)
Oh yeah, and this discussion is about anime that is
difficult to IVTC.
I think more people should consider why they are trying to IVTC footage and consider whether they are working with a pristine source that was actually telecined accurately to begin with.
I'll agree -- the distinction between "interlaced" and "telecined" is one that I think still needs to be clarified. (This thread seems to prove that -- you can have difficult or impossible IVTC, but there's always an easy way to deinterlace...)
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