On Sat, 2007-08-25 at 04:25 -0600, James G. Flewelling, Cobras2 wrote:

> I've been doing some reading and it appears that mpeg2 (the container) 
> and VOB are basically the same format... 

Yes, (AFAIK) .vob isn't much different from an MPEG PS (program stream).

[...]
> Anyway, the main idea is that I want to be able to burn this VOB onto a 
> DVD once I'm done, stick it in a DVD player, and watch it (nevermind 
> menus or chapters though, I can figure that out on my own, all I want 
> for now is to get a working VOB with audio and subtitles).
> 
> Is this possible with transcode?
> 
> How would  do it?
> 
> And if it ain't possible, why not?

No, isn't possible. We lack a fair number of building blocks and
transcode has yet some architectural limitations for doing that.
Anyway, allowing to do things like that are planned for foreseable
future. Unfortunately, there still a long road.

Let's see some details.
- first and foremost, transcode lacks proper MPEG/VOB muxing. Transcode
can produce MPEG ES (separate tracks), not PS nor TS nor VOB.
- transcode lacks a reliable passthrough support. Passthrough
here means to avoid the decode/encode phases, that can greatly reduce
the final output quality.
- transcode core has no notion of not-audio, not-video streams. I.e.: it
can handle cleanly (without hacks) subtitles or any other extradata.

All of those are of course addressable issues. I've already some ideas
and plans for all this stuff and more (of course, ideas needs to be
implemented, tested and tuned :)), we just lacks time/development
resources as usual.

If someone wants to jump in, just subscribe transcode-devel, grab a copy
of transcode-HEAD and start discussing :)

> Is there another option besides (or as an extension of) transcode? 
> (preferably on the command line, not a GUI)

Maybe mencoder, maybe a commandline tool combo like mplex + tcrequant +
stuff, like tovid, mandvd or others. I don't know.

Bests,

-- 
Francesco Romani // Ikitt
[ Out of memory. ~ We wish to hold the whole sky, ~ But we never will. ]

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