DVD2AVI wrong info?? --->> NTSC\FILM\PAL??

[magicmycote]

When I use DVD2AVI to produce my .d2v file, the status on the right shows:

Aspect- 4:3
Frame Rate- 29.970 fps
Video type- FILM

My question is, in tmpgenc, the ntsc(film) template is for a different fps (23.9)..I've ripped the vob files from Miracle on 34th street DVD, and when I encode using any of the SVCD templates, I get horizontal lines whenever\wherever there is motion. One encode yesterday there were no lines, (forgot what setting that was, I know I had NO options checked in advanced-had to do with source)..but that SVCD played choppy in my standalone.

My question is what do I make of the (apparently) conflicting info from DVD2AVI...and how can I tell which template to use in tmpgenc in order to get rid of the horiizontal lines? I don't want to use the 'deinterlace' option unless it will make an 'unchoppy' result. TiA!

[Vejita-sama]

Here's the short verison. Do a search for: telecine, 3:2 pulldown, IVTC, and/or 23.976 for more info.

Your TV displays 29.97fps interlaced source. Interlaced in that each frame is made of two fields. Each field has half the data to be displayed (odd and even, every other line).

Movies are shot at 23.976fps progressive. Each fram is a complete still.

To show a 23.976fps progressive movie on your 29.97fps interlaced TV, they convert the movie to that format by a process known as telecined (aka 3:2 pulldown). So you DVD movie reads as 29.97 NTSC film, film = is telecined to 29.97 aka was once film @ 23.976fps.

For the best encode, you should convert the movie back to 23.976fps, encode it, then apply the pulldown flag (ie. use TMPGencs *_film template). Why, because you'll get a higher bitrate per frame:

29.97fps @ 1800kbit/s = 60.1kbit/frame
23.976fps @ 1800kbit/s = 75.1kbit/frame

That's like a 25% increase in bitrate w/ increasing the size of the encoded MPEG. Again, you need to apply the 3:2 pulldown flag so your TV can play it.

[magicmycote]

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What method would you use to convert the movie back to 23.976? Once I have done this, am I reading you correctly in that I should then load the .d2v with the NTSC(film) template, and turn on the 3:2 option in the advanced menu of tmpgenc? Thanks for the instructions, it just sounds too simple to be as I just described

[Vejita-sama]

Opps sorry forgot that part In DVD2AVI enable 'force film' this will convert the VOB -> 23.976 D2V

The other way is to take the 29.97fps D2V and perform an inverse telecine (aka IVTC) process/filter on it. IVTC is very very slow, and doesn't always work 100%, so force film is much easier and faster.

Take a look at:

http://www.inwards.com/~dbb/interlace_myths.html

for more background/info.

[magicmycote]

Hey thanks for that link! I'm eager to learn all that I can so I won't have to be dependant on this board (although I still like to lurk ;p ) Anyway, in the mean time, I went ahead and tried DVD2SVCD and had fantastic results! The DVD2AVI tab I left on "automatic" for the force film option, and it chose to force film.

In the future I'll probably forgo the program, and do it manually, but for a first timer that program is really excellent..I think the most dramatic difference is with CCE, wow the 3 pass VBR really looks awesome! I installed CCE about a year ago, and uninstalled it because of what I thought was the lack of features..but it really does do a fantastic job with quality. Thanks for all your help.

[Vejita-sama]

I normally use DVD2SVCD with force film on (if you choose automatic it might run an IVTC filter which adds a LOT of time), and 3pass VBR to put most movies on 2 80min CDRs.

Feature wise CCE does in fact suck However, it's has a great MPEG2 encoder (for MPEG1 I actually recommend TMPGenc). So you just need to frameserve to CCE w/ AVIsynth (or Virtual dub).