DGIndex - Force Film or NOT?

[StephenChow]

Hi,

I read the guide http://www.doom9.org/mpg/dgindex.htm,
it said that "Frame Rate = 29.970 fps: Let the preview run for a couple of minutes, then take a look at the Video Type: If it's FILM at a percentage higher or equal to 95% or if it only shows FILM you can activate Forced FILM as shown below. Otherwise you will have to perform IVTC (that process will be explained later on)."

But in my case, Video Type don't show FILM or FILM>95%, 99%, instead, it show NTSC.
So, should I force film or not?
I'm using newest version 1.4.8 Beta3

Here is the picture URL:
http://img113.imageshack.us/img113/9328/dgindex7oi.jpg

Thanks

[Tatsh]

Depends on the video. If it's a popular movie on DVD, 99% of the time you can force film.

Based on your image, it looks like a normal DVD (VTS in the title bar). Therfore, I would say yes to forcing film.

[scharfis_brain]

Uhm, no. Forced film (Ignor Pulldown flags) will destroy the video. This DVD needs "honor Pulldown flags" and a proper IVTC.

[StephenChow]

Source is HongKong DVD, and seem it consists of both progressive and interlaced frame,
I was trying to rip HongKongDVD to MPEG-4 x264.
I don't forced film, I used Honor Pulldown then TIVTC+TDeint.
Thank you scharfis_brain and Tatsh.

[dbzgundam]

This type of thing has always made me ponder the question "why does the pattern break?"

There's tons of "popular" movies out there, where Force FILM gives great results, but leaves one or two stray frames throughout the movie (particularly at scene changes... though I've seen random frames throughout movies as well).

In fact, aside from digitally produced shows/movies (The latter two Star Wars movies are my only examples actually), I've never seen a movie that had 100% progressive frames. Honestly, in this day and day age, is it still impossible to produce a constant pattern during the telecine process?... And for that matter, why do we telecine from the film? Surely they scan frames in AS FRAMES for postproduction effects, so why not for anything else? I don't see it being hard to scan in as actual frames and then doing a software-based telecine.

Someone in the field (no pun intended :)) can answer this question?

[Tatsh]

I don't know enough about that, but I also have never come across a fully 100% progressive movie because intros being interlaced and such, along with random frames.

Forced Film has worked great for me. I've used it for most rips which then go to XviD, and I don't have the eyes to notice bad single frames after the encoding to XviD.

With this film, I would guess at forced film because, to me, a film just has to be watchable in the end. I don't care about a single frame messing up, unless perhaps if it were my own content I might.

[jellysandwich]

I've come across a few 100% film movies (according to the d2v). The ones that come to mind are The Longest Yard and Super Troopers, simply because I encoded just this past week.

@StephenChow

Just so you know, NTSC means 0% film. This means that you must definitely IVTC or deinterlace.

js

[neuron2]

Just so you know, NTSC means 0% film. This means that you must definitely IVTC or deinterlace. You cannot IVTC pure video (0% film)!

[jellysandwich]

You're right. I worded that wrong, but now I'm too lazy to fix it, sorry!

js