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Thread: 23fps to PAL/NTSC

  1. #1
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    Default 23fps to PAL/NTSC

    I have an avi that I would like to convert to PAL (or NTSC) MPEG, prior to burning to DVD.

    The avi is film rate, 23.whatever fps. Audio is AC3 2 channel, in perfect sync

    What would be the best way to convert

    I typically use Mainconcept to convert avi to elementary video (mpv), and vdubmod to demux AC3, then assemble everything in DVDLab

    If I do that in this case, I will end up with sync problems. Any advice on converting from film to PAL/NTSC and maintaining audio sync appreciated?
    I dont have Canopus, so cant use that tool.

    Had a brief look through the forum (I'm sure there used to be many many more threads on here a few months ago!) and the closest Ican find is a thread from BlackPearl.. but not sure if that will help in this case)

    TVMIA
    Alan

  2. #2
    Not a god of digital video blutach's Avatar
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    Default

    Check this out. It is not an easy job and as you have already highlighted, audio sync is a real problem.

    Easiest thing to do is buy a player that can handle both formats.

    Regards

  3. #3
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    Hmmm... why not just use the "match audio and video lengths in Vdubmod?

    I have a player that can handle both PAL and NTSC, the problem is the frame rate - I'm pretty sure 23.9fps will cause a hiccup somewhere. And almost certainly when transcoding the audio to 48KHz.

  4. #4
    Retired setarip's Avatar
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    Default To alewis

    I believe you can accomplish the conversion from 23.976 to 29.97 (NTSC DVD standard) by using "TMPGEnc" (Different than "TMPGEnc DVD Author") and selecting the "3:2 pulldown" filter from under the Settings>>Advanced tab...


    If you have more questions, always feel free to ask them...

  5. #5
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    Default setarip, alewis

    "I believe you can accomplish the conversion from 23.976 to 29.97 (NTSC DVD standard) by using "TMPGEnc" (Different than "TMPGEnc DVD Author") and selecting the "3:2 pulldown" filter from under the Settings>>Advanced tab..."

    yes this works very well and happens to be the method i use.

    with the ac3 acm decompressor installed, virtualdub can be used to save the ac3 audio to .wav, then use this as the audio source before tmpgenc encodes.with this method i never have audio/video synch issues...
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