pal, ntsc, interlaced, progressive, vhs, dv, scripts

[onesoul]

Belive me, I have spent many and many hours reading all kind of topics at this forum (which I agree with the most by beeing the best in the world about DVD conversion), mostly dvd2svcd and avisynth topics (I still don't understand what is yuy12 or something like that, have much to learn, I see many people developing avisynth filters and I stay mesmerised by what they can do). Still finding what does suits best for which ocasions (maybe a possible future guide!).
Anyway just saying these things because I am not asking without searching...

I don't want to break forum rules but I have read so much about these whole formats that I've gone confused.
What or which is interlaced or progressive?
And why and when deinterlace?
Vhs or dv what needs? and which is best capture for vhs and dv?
(Sorry by all these questions, maybe there more people confused like me and wanting to learn)

I mostly do pal movies (at least trying too) but I have some ntsc to do. I do encodings to svcd 4:3 with no borders 720*576 which is pal (I think). What should i do about these ntsc?

And one last question (sorry), a encoding that i've been testing for a long time (it's my first one since I registered at this forum, I'm still searching for the best settings, and ruined some cd's), The Emperor's New Groove DVD (animation), I finally got to roba which it seems very good. At the monitor pc it seems great but at tv i notice little white stripes swinging at the edges, which script would do best to make them go away and what causes those stripes?Could work convolution3d, temporalsoften, somethinh else...? I'm still lost about all kind of filters (there are so many!)

I sincerely want to find answers to all these questions and hope many people like me could gain some more knowledge from you.
Hoping to find answers.

My best regards to all
Hugo Montenegro

(Please don't strike me)

[markrb]

You do have many questions and honestly I think you will have better luck in other forums for some specific questions.

Regarding filters you are much better off asking in the Avisynth forum. Here you will get some people that know, but there most will and those that do may even be the authors. They may also be better able to answer your Interlaced and deinterlace questions although you might get answers here too.

I don't know what you are asking about capturing. Are you asking how to? Are you asking what is DV? I just don't know. If you need to know how to capture a file you are really better off asking in the capture forum. Most here do DVD or downlaoded AVI conversions and how to capture is really not what this forum is about.

If you are asking how to convert an already captured AVI then maybe more specific questions will help us better. What needs is really not specific enough for anyone to be able to help you.

A really bad explanation:
Simply put Interlacing is the drawing of every other line on your TV or Monitor and then coming back to do the other set on the second pass.
Progressive draws each line everytime.
This is just the way the TV handles it. Video can be encoded as progressive or Interlaced and if the material is progressive and your DVD player can only do Interlaced then it is backward comptable for a lack of a better term. The trouble comes when we are converting and I do not know this part well since I never run into interlaced material myself.

There is an NTSC to PAL checkbox for DVD's on the conversion tab. Just check it. You should be all set then.

I know it can be confusing, but if you could narrow down the range of questions and get more specific we would be able to help better.

Mark

[onesoul]

@markrb

Thank you for your reply.
The more specifics questions I'll put at he avisynth and capture forums. Sorry for putting this all together, I guess I was too much confused.

About the interlaced and progressive matters, if the dvd player supports both pal and ntsc then it isn't needed deinterlacing?

Quote of mrbass advanced reference about dvd2avi that can be found at his page:

NTSC Field Operation (Force film) default Automatic
The Difference of Video Type (FILM/NTSC/PAL/HYBRID)
On
23.976 fps progressive frame coded on DVD
Forced FILM skips the RFF (repeat_first_field flag) of MPEG-2 stream
Off
FILM Forced FILM OFF
29.970 fps 3:2 pull-down (by DVD2AVI) based on orderly RFF
RFF sequence behaves as 01010101... every four frames add two fields (one frame)
That's the theorem of 23.976/24->29.970/30 fps (4:5) conversion

NTSC/PAL Forced FILM OFF
Forced FILM OFF 29.970/25.000 fps interlaced or progressive frame coded on DVD
all RFF of MPEG-2 stream equal to 0, unnecessary to repeat
disable Forced FILM to set correct frame rate, NTSC 29.97 fps or PAL 25 fps

HYBRID Forced FILM OFF
29.970 fps irregular pull-down (by DVD2AVI) due to unorderly RFF
Try to skip RFF will result in meaningless stuff and cause A/V asynchronism
.
IVTC (Slow as hell) (Inverse Telecine)
Only 30fps telecined from 24fps can be converted back to 24fps by IVTC.
If every frame is interlaced (most TV news and shows), we must apply deinterlace instead of IVTC.

Generally speaking, IVTC bases on field combination and deinterlace bases on interpolation.
Field combination reconstructs original frames <=> interpolation produces artificial frames

Once you find the video is created as 24fps originally, it's better to perform IVTC.
Deinterlace downgrades the quality and 30fps remains. More processing time with larger compression size!

Telecined 30fps is simple to identify. It's usually 3 progressive frames followed with 2 interlaced frames.


I must be extremely dumb but I don't get this right. When and for what reasons should someone use any of these settings.

(Another dumb question: If my dvd player is capable of reading pal/ntsc and interlaced and progressive material it means that I should turn force film off?)

Both ntsc and pal can be interlaced or progressive?

Thaks again for putting up with me

[markrb]

No not dumb just confused and believe me it's easy to get so. You have it harder then I do since I only do NTSC material and hardly ever come across interlaced DVD's. I have been lucky in that the worst I have ever had to do was use IVTC on a movie. I never needed any other filters.

I do know that being NTSC or PAL doesn't matter. Either can be interlaced. It's just that it seems that PAL is interlaced much more often.

I can't help much more since I really don't know. I hope one of the others can step in now.

Mark