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  1. Member
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    Jan 2002
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    After weeks of prep I'm am prepared to transfer these NTSC laserdiscs to NTSC DVD. As such, I have done some research and was wondering if someone could help me produce the highest quality possible encode from these archaic beasts.

    Hardware:
    ATI 64MB VIVO, 100GB 7200, 40GB 5400 (OS only) AMD 1700+ on ecsK7s5a with 512MB of DDR 2100 ram.

    Software:
    intend to cap with virtual VCR as I cannot for the life of me get virtualdub to work properly. I will attempt to cap at 720x480 with 48Khz, 16bit stereo sound. Tmpgenc will be the encoder of choice and I am going to attempt avisynth.

    Order of Operations: (stolen from slk001's post on doom9.org)

    1) Capture at the MAXIMUM resolution and MAXIMUM bitrate that your capture card can do reliably (I can cap at 9.5Mbps at 704x480 using a GOP="IPPP" with no frame drops). --

    2) Perform a single pass IVTC encode (I use AVISYNTH, with the filter DECOMB, a GOP="IPPP", CBR at 9.5Mbps) to tranform your video to 23.976fps FILM.

    3) Now, use THIS video to apply any filters, resizing, etc, then encode to VBR using encoder of choice (I use a 3 pass encode).

    4) Apply a 2:3 pulldown, setting each frame as progressive, drop_frame TRUE, etc, etc.

    5) Import and author as usual.


    Now, he also mentioned that:

    If you are making an NTSC DVD you have to use pulldown to make it 29.97fps.

    Most commercial DVDs have a 3/4 structure, which will give you "IBBPBBPBBPBB".

    Since this will be my first attempt with avisynth does anyone see any reason why the above wouldn't work for my project? Also what program applies a 3:2 pulldown after its been filtered once through avisynth--should I just incorporate that into a script or does it have to be run outside of avisynth. furthermore, what other commands should i run to remove any grainyness that may be present and is there a particular order that the commands in the script should be run for this to work?

    phew--more to come
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  2. Member ntscuser's Avatar
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    Mar 2003
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    United Kingdom
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    Originally Posted by menace

    4) Apply a 2:3 pulldown, setting each frame as progressive, drop_frame TRUE, etc, etc.

    5) Import and author as usual.

    Now, he also mentioned that:

    If you are making an NTSC DVD you have to use pulldown to make it 29.97fps.
    Either I've misread your post or you've got something back to front. Laserdisc is already encoded with 2:3 pulldown.
    You can either re-record it as 60Hz video signal (the easy way) or...

    Strip-out the 2:3 pulldown, de-interlace, encode in 24fps movie-mode and add 2:3 pulldown to the output (very hard I'm told).

    Another thing to watch out for is that laserdiscs are encoded in composite video. Whether you get better results from the composite or S-video output of the player depends entirely on your frame grabber.
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  3. Member
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    Jan 2002
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    hmmm, either no one has any idea what im talking about or this is in the wrong thread..any help from the moderators?
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  4. Member
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    Feb 2003
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    Canada
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    wow intresting I never knew you can make Laserdisc To DVD..
    I have a few will the quality turn out nice? Laserdisc quality is Awsome! I have a few laserdisc myself..
    Slowly Im gettin this DVD-R stuff :)
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  5. Member
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    Jan 2002
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    NTSC-land
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    I have modified my method somewhat and since no one seems to care about laserdisc this will likely be for my own information
    Anyways,,

    --I am capturing at 720x480 in virtualVCR (better ATI capture for me) 3 -4 avi's using huffyuv with default(best) settings

    --edit and clip each avi so that the avi's are only exactly what i want. Although I staill have to figure ouit how to frameserve 3-4avi's and join them in one step without creating an intermediate file--any help from people is appreciated

    --enable IVTC adaptive, deinterlace and sharpen (30) and frameserve to tmpgenc

    --set tmpgenc to dvd and customize with basic color correction, noise, motion search estimate at high quality and away i go.

    If anyone is reading this besides me--what noise filters and settings are you using--its a clean laserdisc remember. Also, what can I use besides Msharpen to sharpen the video without introducing noise?
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