KDVD: NTSC-interlaced source vs Force Film?
Hey guys, I have some question for you with an NTSC interlaced dvd source. I'm trying to backup episodes of the Alias tv series from DVD, but squeeze more episodes onto a disc using KDVD. The show is in 16:9 anamorphic and I'd like to keep it that way for full compatability with my parents HDTV widescreen tv (this part I have no problems with, as far as setting up my avs script and CCE to encode in 16:9). Here are the questions I do have:
1) Should I be setting Force Film in dvd2avi 2) Should I be deinterlacing, and if so which filter/parameters 3) What framerate should I be encoding in? Am I able to deinterlace, encode at 23.976 with a pulldown to save space? (I'm not even certain if this last statement is correct) 4) What about Interlace Resizing? I've never used this before but read about it in another post... 5) What does the 3:2 pulldown detecting in CCE mean? If I select it, can I avoid having to run pulldown.exe after encodign? And last but not least, I noticed my source material is quite grainy in the background... I was wondering what settings in the optimal MA script I might be able to modify to clean things up a bit. Thanks a lot guys, I know I'll be able to get tons of help from you guys! |
Re: NTSC-interlaced source question
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Do a preview in DVD2AVI and upper in the right window you can see 29.976 NTSC (you will see comb artefacts in moving scenes) OR 29.976 NTSC FILM!! The second one means your source is encoded at 23.976 in real using the pulldown while play. And in this case use FORCE FILM. Quote:
Use Boulders version of an interlaced MA Script as posted in this forum and perform a mpeg2/interlaced encoding. BTW!: If your source s really interlaced (comb artefacts) do not! use Forced Film in DVD2AVI! cause if its interlaced .. it will be real 29.976 NTSC Quote:
Ask the NTSC deinterlacing cracks in here how to apply the needed Lines in Avisynth. After this you can do an encoding performin the 3:2 Pulldown "while play" here its explained: http://www.incredible.de.tf/pulldown.html There its also explained WHY we use a 3:2 Pulldown. Quote:
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And therefore "yes", if setting the 3:2 pulldown in the encoders options ... you don't have to perform the pulldown.exe appl. afterwards, because the job is already done by the encoder! Quote:
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Re: NTSC-interlaced source question
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The way I was doing it before was NOT selecting Force Film in dvd2avi, and adding the line TomsMoComp(1, 15, 1) in my script to deinterlace. It did an excellent job of removing the interlacing and also reduced file size. I also did a test clip without deinterlacing, and didn't really notice any loss of detail. The interlacing wasn't that visible, except in some high movement frames. But I'll have to search for Boulder's script to see if it makes a difference. |
Ah never mind, I found Boulder's message. It's actually in the Optimal Script forum not this one. http://www.kvcd.net/forum/viewtopic....833&highlight=
However I'm not certain what to put for my resize values. I'm looking at Boulder's newer script, which is at the end of the thread. I'm encoding a 720x480 dvd source as 704x480, so here were my resize values with overscan=2 as obtained by moviestacker: Code:
BicubicResize(704, 480, 0, 0.6, 8, 0, 704, 480) So I kept Boulder's resize lines, which were Code:
BicubicResize(656,272,0,0.6) With my extremely limited knowledge of these resize commands, through LOTS of trial and error I eventually stumbled upon these lines to encode at 704x480. I only hope I am doing things right! Code:
BicubicResize(656,224,0,0.6) |
You can use the values MovieStacker gives you. All you need to do is halve the vertical resolution if you resize after the fields have been separated. So BicubicResize(704,480) would become BicubicResize(704,240).
I use overscan blocks instead of letterbox overlapping since I don't want to lose any actual film pixels. |
I'm using the the VHS script from the optimal section, how would I modify it for interlaced encoding...what parts should be in the seperate odd/even sections?
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