My first IVTC - is this right?

[mojo]

I'm editing a commercial DVD movie.

The main content is 24fps progressive with pulldown flags.

The deleted scenes are 29.97 interlaced. I assume I need to convert the deleted scenes to the same format as the main film to work with them together.

I am guessing the first step is to inverse telecine the deleted scenes to 24, convert them to progressive and then run them through GPpulldown (or whatever it's called) and "convert" it from 24 - 29.97 with pulldown flags.

Am I right so far?

Do I just load the clip into TMPGenc, click IVTC, then deinterlace with either VD or TMPG?

I have not gotten the hang of AVIsynth and would prefer to use these "simpler" tools.

One other questions... GPindex lists the 24 material as having a field order of "top," while the deletes scenes are "bottom." Can progressive material really have a field order, and does this mean I should change the field order of the deleted scenes to match?

Thanks!

[BJ_M]

deleted scenes are often from vids and are native interlaced -- you dont need to deinterlace .. you can have mixed in your dvd ... they might also be a different aspect ratio .... that you shouldnt really mix

[mojo]

Ok, I did the IVTC with Vdub and it looks great - perfectly smooth motion now.

One thing that surprises me - there are no field artifacts at all even in fast motion - the frames look progressive. Do I still need to deinterlace them?

Even if it's true that I don't *have* to convert it, I like the idea of all the material in my project being the same kind of source - I was having problems earlier with stuttering video and it began once the first deleted scene came up - so by turning into the same format as the main film, I'm hoping it's fixed.

[jagabo]

Ok, I did the IVTC with Vdub and it looks great - perfectly smooth motion now.

One thing that surprises me - there are no field artifacts at all even in fast motion - the frames look progressive. Do I still need to deinterlace them?

No, the whole point of IVTC is to restore the original progressive film frames. If it's done properly there will be no comb artifacts.

With a few short scenes VirtualDub's automatic IVTC might work out OK but it's not reliable in the long run. You'll eventually start finding jerky scenes and interlace artifacts sneaking through. You're more likely to see problems with smaller motions or low contrast scenes because the comb lines are harder to detect then.

VirtualDUb's manual IVTC is perfect if your source is clean and free of pattern breaks.

[manono]

And a good AviSynth IVTC is much better yet, as it can adapt to pattern breaks.

Why anyone in this day and age uses TMPGEnc's IVTC (especially the automatic one) is beyond me. It makes slow encodes go much slower. About time for you to learn some basic AviSynth, mojo.