ffrr skrev:
Jesper Sörensen wrote:
ffrr wrote:
I think you misunderstood. I know what is required for DVD. I was
asking the difference between that, and what comes out of the DVB
card as a program stream (which is what is in the nuv file myth
creates).
DVB cards deliver the data in the raw TS format so this is the most
"pure" form you can record in. The TS->PS conversion is performed by
Myth if you're in PS mode, but that code isn't 100% kosher so it might
or might not work depending on what you need.
People keep saying the PS is mpeg 2, and I know it is 720x576 etc
(haven't checked bitrates yet). So what is it missing (and if it's
the header that DVDstyler says is missing, how do you put the header
on)?
It's not a header. TS and PS are different ways to hold the data. It's
possible to convert losslessly between the two, but it's not trivial,
and definitely not as simple as smacking on an extra header or
something...
_______________________________________________
No, the file is _already_ in ps format. It's this ps format file that
DVDstyler says is missing a header. Given the new info you have just
told me, that the myth TS to PS conversion code isn't '100% kosher',
then maybe that's the reason.
You could try to use replex or some other tool to remultiplex it (from
PS to PS).
Actually the conversion mustn't be all
that hard, as Kaffeine, and also the Windows software that came with my
Twinhan card, both offered the PS mode as an alternative recording
method.
As I said there are lots of tools for this but their quality vary, and I
don't know which one is best.
I'm no expert so if you need more info you'll need to read the MPEG-2
system spec, google or trawl the archives. For your info, this is what
Marcus Metzler said about it (myth-dev list, 2004-11-25, subject "DVB
subtitles and TS->PES decoder"):
"AFAIKT the TS to PES conversion uses my routines from the
dvb-mpegtools package. This is good enough for a quick and dirty
transformation, but can not be used for e.g. authoring DVDs where you
have to get the muxing correct and add some more time stamps. That's
why I started dvb-replex (see http://www.metzlerbros.org/dvb/index.html)"
> Maybe the card itself can output either mode?
Not likely. TS is what comes through the air (or cable if you're on
DVB-C), so if you get PS from the card there is a converter somewhere in
the data path (probably in the application). I guess it would be
possible to put a converter in the card's driver or possibly in the
card's hardware but I've never heard of such a thing.
Anyway I could record in ts format and try using the command line ts2ps
conversion tool I suppose.
Yup.
_______________________________________________
mythtv-users mailing list
[email protected]
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
