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  1. Member
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    Hi there, I'm relatively new to encoding on a Mac - I tried to convert a .avi (DIVX) 624x256 12bpp 23.976 fps 622.4kpps -

    to a dvd ffmpeg - mpeg2 720x480 4000 kbps 23.976 fps

    Quicktime is decoding - the output is autosized to DVD 16:9 framerate NTSC film

    Anyway - I ran the encode and the following files came out


    title.mpv - about 3gig
    title.ac3 -
    title.mpg - about 3 gig
    title.mpg.DVD folder containing AUDIO_TS and VIDEO_TS

    BUT

    VIDEO_TS contains only VTS_01_1.VOB which is about 19mb ???

    I can't play that VIDEO_TS file thru apple DVD player

    quicktime plays the .mpg without sound (even though QT A3 codec is installed)

    VLC plays .mpg no probs with sound - also plays the VTS_01_1.VOB which is about the first 5 minutes of the film

    Questions: Can I just throw away title.ac3 and title.mpv as I assume they are the demuxed audio and video?

    Where did the rest of my VIDEO_TS file go?

    I tried deleting the title.mpg.DVD and then reauthoring the .mpg file in the ffpegX tools -> author section and it produced another title.mpg.DVD file with exactly the same problem

    Any ideas? - Also can i change the .mpg into a DVDr format?

    thx in advance
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  2. Explorer Case's Avatar
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    Originally Posted by spigfry
    quicktime plays the .mpg without sound (even though QT A3 codec is installed)
    This is to be expected; the AC3 codec doesn't decode audio in muxed MPEG files, as the codec was intended for AVIs.

    Originally Posted by spigfry
    Can I just throw away title.ac3 and title.mpv as I assume they are the demuxed audio and video?
    Don't. Using these files will save you some time (see below).

    Originally Posted by spigfry
    Where did the rest of my VIDEO_TS file go?
    The log might mention an error for abortion of the authoring.

    Your source is 23.976 fps, which needs a "3:2 pulldown"-setting to be DVD compliant. So rename mpv to m2v, use the Pull Tool on the m2v, then Mux (with Author checked). Test in Apple DVD Player again.
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  3. Member
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    thx for the help, retried it and it worked fine, just a couple of Qs:


    when i drop the .avi file into ffmpegx and select dvd ffmpeg as the output source, the output framerate shows as:

    ffmpeg mpeg2, 720x480, 4000 kbps, 23.976 fps, no crop

    Is this already DVD compliant, or do i need to change it to 29 fps?

    if this is the case, is there an option to change the frame rate to 29 in the initial encoding?

    thx
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  4. Explorer Case's Avatar
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    Originally Posted by spigfry
    Is this already DVD compliant, or do i need to change it to 29 fps?
    Neither, afaik.
    - Use the DVD mpeg2enc preset, then you can turn on "Set 3:2" in options, or
    - Use the DVD ffmpeg preset, which unfortunately doesn't have such an option, then use the Pull tool to set 3:2 pulldown on the m2v, then mux, as described before.
    Maybe future releases of ffmpegX will simplify this process...
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  5. Member
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    thanks again, appreciate all the help
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