IVTC problems - looks like combed fields!

[Blue_MiSfit]

Hey folks,

So, I've got a tricky one today.

Here's an unprocessed M2V source:

http://www.megaupload.com/?d=TZNRVEUS

Upon first inspection it looks like vanilla 3:2 pulldown. We've got 3 clean progressive frames, followed by two combed frames.

Standard TFM().TDecimate() with either order=1 or order=0 results in a real mess - with every fourth frame showing combing, and something that looks more serious. This pattern is mostly consistent, but not totally. Sometimes I see 2, 3 or even 4 combed frames in a row.

I did SeparateFields() and had a look, and to my surprise some of the individual fields have combing! I've never seen this before.

Ideas on how to fix? Or, is this a lost cause? If so, I can possibly get my hands on a better source.

Thanks!

~MiSfit

[scharfis_brain]

get another source.

causes:
1) progressive resizing on an hard telecined source
(probably converted 16x9 letterboxed to 16x9 anamorphic)
2) progressive encoding

so the one who did this was dumb and blind.

[Guest]

I can possibly get my hands on a better source. Where did you get this source?

[Blue_MiSfit]

so the one who did this was dumb and blind.


I couldn't agree more. I've been getting a lot of stuff like this recently.

@ Neuron2:

My work takes content from studios and encodes it for internet based delivery. We have license agreements with all the major studios. Unfortunately, they deliver content to us in MPEG-2 format, and it's frequently (foolishly) processed by whatever lame encoding house they choose to use for this service. We can request a better copy.

Thanks guys!

/Thread

~MiSfit

[Guest]

My work takes content from studios and encodes it for internet based delivery. You do this work professionally and you can't recognize improper resizing?

Just saying... :)

[Blue_MiSfit]

Touche! We're not all masters though :(

I figured it was progressive resizing of interlaced content, but I just wanted to make sure there was no fancy-pants trick that could fix it. The turn-around on getting a new source can be pretty significant.

Besides, I just started today! I'm trying to turn this hobby of mine into something that can pay the bills.

Thanks again gentlemen

[Guest]

I make silly mistakes quite often. Scharfi usually corrects me. :p