Re: DVD to DVD

On 5/9/07, Mark Alford <[email protected]> wrote:
>
> Thanks for the suggestion of dvd95, that looks very relevant.
> Using mencoder in "copy" mode is also a good idea.
>
> I managed to get roughly what I wanted in a roundabout way as follows:
> 1) use dvd::rip to get the VOBs on to my hard drive
> and convert them (via transcode) to an xvid format .avi file.
> 2) Use ffmpeg to convert it to a DVD-compatible mpeg:
>     ffmpeg -i movie.avi -target ntsc-dvd  movie.mpeg
> 3) Make that mpeg into a DVD using dvdauthor. It turned out
> that it fit on one DVD, for some reason.

That way you loose too much quality. Non of these codecs are lossless,
so every transcoding will decrease the quality. VOB files are
specially structured mpeg2 streams. So you are better of using copy
with mencoder, or using dvd9to5. If you want to use only transcode
tools, then use tccat to concatenate all the VOBs to mpeg2 file. After
you have the "original" mpeg2 file, you can either split it, using
avidemux or similar tool, or you can use tcrequant (from transcode) to
change only the bitrate (loosing some quality) so it fits on single
DVD. For tcrequant you will need to demux the mpeg2 stream, requant
the video, and then join again the audio and video stream. You can
have some a/v sync problems though.

>
> But I am still curious about the menu structure of the
> "transcode" tab in dvd::rip. Why is it that when you
> select container "MPEG", the only video codecs you
> can have are "SVCD" etc, and you can't have "DVD"
> (i.e. a DVD-compatible MPEG video)?
> And why is "MP2" the only audio option, when DVD-compatible
> MPEG files have AC3 audio? Surely transcode is capable of
> making the VOB file into a DVD-compatible MPEG, after all
> that's roughly what the VOB file is already.
>
> Marko
>
>

This will better be answered by the dvd::rip's author.

-- 
Svetoslav Milenov (Sunny)

Even the most advanced equipment in the hands of the ignorant is just
a pile of scrap.