NTSC DVD 29.97fps to Xvid 25fps, help

[recoba]

Hi,

I have a NTSC DVD with 29,97 fps, and I want to obtain a standart xvid 25 fps. And there are problems. I read a lot of forums and tried some avs scripst, but the results aren't very good.

Mi best results I obain with this script:

Mpeg2Source("C:\ntsc.d2v")

ConvertToYUY2(interlaced=true)
SmoothDeinterlace(tff=true, doublerate=true)
Crop(2,56,-4,-64)
LanczosResize(544,224)
SelectEvery(5,1,4,5)
weave()

The first problem is that the video obtained has 35,964 fps. And the movement isn't fluid. The frames 2 and 3 of 5 are interlaced too, and I don't know if is better remove them or not.

I supos that this script can be much better, so I hope some recomendations from the experts ;).

Regards.

[Spotteri]

Well I haven't done mutch NTSC -> PAL conversion, but since nobody has replyed yet, I'll give it a shot.

Assuming that you source is clean pulldown, audio samplerate is 48000 and you don't mind slightly higher pitch on audio:

Mpeg2Source("C:\ntsc.d2v")
audio=wavsource("C:\audio.wav").assumesamplerate(50050).ssrc(48000)

ConvertToYUY2(interlaced=true)
Telecide()
Decimate(cycle=5)
Fielddeinterlace(blend=false)
Crop(2,56,-4,-64)
LanczosResize(544,224)
assumefps(25)
video=last
audiodub(video,audio)

Basicly this is 29.97 -> IVTC -> 23.976 -> speed up -> 25

EDIT:I forgot the audiodub-part. I was a little too tired last night. It's fixed now.

[loa-ash]

Basicly this is 29.97 -> IVTC -> 23.976 -> speed up -> 25

In my opinion is better only telicine to 23 fps...don't speed up to 25... NTSC is better than PAL... keep original source.... why you want to do 25fps PAL?

[iNFO-DVD]

NTSC is better than PAL

Sorry, cant let you get away with that, you're the first person I've ever heard that has said that.... Can you please explain that comment?

[Kika]

Telecine only works if the source was 23.976 progressive. If the source was true interlaced 29.97 fps stuff, you can't use telecine.

Sorry, cant let you get away with that, you're the first person I've ever heard that has said that.... Can you please explain that comment?

Same here. I'm VERY interested in getting a good explanation about that...

[loa-ash]

I live in Italy then DVD PAL that arrives here are bad quality... many problem about noise, colours, interlacing... I speak about anime DVD in first...but also movie or tv-series sometimes are not good quality so I prefer ntsc dvd because colour and other tips take my interest in this format... sorry I can't explain it better.
:confused:

[Leak]

I live in Italy then DVD PAL that arrives here are bad quality... many problem about noise, colours, interlacing... I speak about anime DVD in first...but also movie or tv-series sometimes are not good quality so I prefer ntsc dvd because colour and other tips take my interest in this format... sorry I can't explain it better.

If you say NTSC DVDs of anime usually look better than their PAL counterparts, that's probably true due to botched conversions done by the companies that make the PAL discs. But if you correctly IVTC the NTSC material yourself there's no harm in speeding it up to 25 FPS (apart from the audio needing to be tweaked a bit) - as an added bonus, you can even play that material on a PAL TV without the slight but noticable jerks 3:2 pulldown adds in the process... ;)

np: Plaid - Dial P (Dial P)

[loa-ash]

If you say NTSC DVDs of anime usually look better than their PAL counterparts, that's probably true due to botched conversions done by the companies that make the PAL discs.

Yes, I went to say that!!! Here there are old anime series converted by the companies that are very bad quality sells to crazy prices :mad:



But if you correctly IVTC the NTSC material yourself there's no harm in speeding it up to 25 FPS (apart from the audio needing to be tweaked a bit) - as an added bonus, you can even play that material on a PAL TV without the slight but noticable jerks 3:2 pulldown adds in the process... ;)


My idea is to keep natural format, but when IVTC is necessary so.. IVTC the world!!! :D

[mg262]

@recoba: are you planning to play the xvid with a standalone player? If not, you could consider encoding at 24fps (or rather 23.976) rather than 25... anyway, it might be worth looking at this if you haven't already:

http://www.doom9.org/index.html?/video-basics.htm

It explains a bit about the different frame rates and why they occur, and about telecine (aka pulldown), which is what you are referring to with "The frames 2 and 3 of 5 are interlaced".

[recoba]

Thanks for all the answers :)

The source is a DVD movie, clean. I don´t have to remove the interlaced frames?? I'm from Spain, and I want total compatibility with mostly xvid players in the market, for that reason i prefaired 25 fps. I will try Spotteri idea and say.

I'm in agreement that PAL specifications are better that NTSC, but here distributors and conversions are very bad, it`s a pain.

Thanks.

[recoba]

Hi again,

Spotteri avs works great, but vdubmod shows error loading:

"Telecide: you must specify the order parameter(0=bff, 1=tff)"

I tried with 2 options, and don't see diferences, what is best??

The audio, I want insert mp3 64kb mono, can I insert in the avs or add stream later??
I suppos that making audio conversion separetly, must change speed, what is the best way to do that?

Thanks a lot.

[manono]

Hi-

I tried with 2 options, and don't see diferences, what is best??

The Decomb Tutorial.html explains how to determine the field order. For DVDs, it's usually Top Field First (Order=1).

Spotteri avs works great,

Glad it helps you. However, he's deinterlacing twice:

Telecide()
Decimate(cycle=5)
Fielddeinterlace(blend=false)

Telecide already has FieldDeinterlace(Blend=True) turned on inside it by default. By adding Fielddeinterlace(blend=false) to the script, you're deinterlacing a second time. You should drop the Fielddeinterlace(blend=false) line. If you prefer Interpolated deinterlacing, make Telecide(Order=1,Guide=1,Blend=False). You may not be using the deinterlacer inside of Telecide at all anyway, if everything IVTCs fine, but it's usually a good idea to keep it in there. There's much more information in the DecombReferenceManual.html.

The audio, I want insert mp3 64kb mono, can I insert in the avs or add stream later??

I usually mux it in later on.

I suppos that making audio conversion separetly, must change speed, what is the best way to do that?

BeSweet has a Preset for 23976->25000.

[Mug Funky]

that's probably true due to botched conversions done by the companies that make the PAL discs

what's botched about the conversion? a semi-reasonable motion-adaptive standards converter will look fine. remember that DVD is intended for playing back, not backing up (otherwise nobody would put CSS on the discs anymore... even if it isn't really useful). conversion is a necessary evil - people in PAL land want PAL discs. any NTSC discs that have been released have sold really badly (r4 "ah! my goddess" was NTSC).

it's just that standards-conversion makes it difficult to back up a disc - my advice is use a higher bitrate and a codec that supports interlace. :)

however, series like family guy, simpsons, futurama (anything from FOX basically) will be genuinely botched... these are terrible to watch and not worth buying were it not for the shows being so good.

@ recoba: it's best to leave these things in their native format. if it can be IVTC'd, then do that (it'll give you better quality). most european TVs can play NTSC natively, and most xvid players will know what to do with 23.976fps.

[Leak]

what's botched about the conversion?

You *will* notice the blends as soon as you play it back on a PC (even straight off the DVD), so why not call it botched - especially if it could have been done right? :confused:

np: Fluke - Goodnight Lover (Risotto)