[mythtv-users] DVD Authoring and MythTV Archive howto (writing one...)

[Chad]

Could you possibly submit your "fixes" to the author, or create a
tarball and submit it to the list for the generic users?  :)

Cool


On Tue, 29 Mar 2005 08:59:09 +0200, Fredrik Karlsson <dargosch at gmail.com> wrote:
> Hi all,
> 
> I thinkit is not OT to point ot that there is a working solution for
> knoppmyth which runs from th web intercace and that I was able to port
> to "regular" mythtv without much trouble.
> 
> http://sourceforge.net/projects/mythburn/
> 
> There are some work being done on a frontend plugin too in the CVS.
> 
> /Fredrik
> 
> On Mon, 28 Mar 2005 06:17:17 -0500 (EST), Cory Papenfuss
> <papenfuss at juneau.me.vt.edu> wrote:
> > On Mon, 28 Mar 2005, Jeff Simpson wrote:
> >
> > > While the outline looks good, I don't think the organization of the
> > > writeup was ever the brick wall preventing anything. The real lack is
> > > in decent software applications to do the job.(ie, I think we should
> > > be looking for people who can fix the missing parts rather than
> > > re-write up the workarounds)
> > >
> > > but while we're at it, add these utilities to the toolbox, these are
> > > all I use to make dvds out of PVR-350 NUVs:
> > >
> > > nuvexport (using avidemux2, MPEG2->MPEG2 cut option)
> > > dvdstyler (for making dvd iso)
> > > k3b (for burning dvd)
> > >
> >         I'll agree to this.  The problem with "one-touch" dvd authoring
> > from ivtv-captured files is that they're not consistent.  Some procedures
> > work well for some, and not for others.  Two big problems are:
> >
> > 1. No lossless MPEG2 cutting that does not break streams.  This would
> > ideally be rolled into MythTV so when commercials are cut out of an MPEG2
> > stream, the losslessly-cut MPEG2 stream is what remains.  Current somewhat
> > working methods include:
> >         A. avidemux: cut/demux/remux (what nuvexport does).  This method
> > works most of the time, but breaks when a capture does not have a constant
> > A/V offset throughout.
> >         B. gopdit/gopchop: cuts in-place.  This method works somewhat, but
> > the "correctness" of the resulting stream hasn't been fully verified.
> > There are some details (timestamp manipulation, open/closed GOPs, "broken"
> > GOPs, etc) that need to be investigated.
> >
> > 2. No MythTV support for MPEG2->MPEG2 cutting.  Ideally, one would want to
> > apply a cutlist to a capture to save the master footage on the backend
> > with commercials removed.  Since this tool doesn't yet exist properly,
> > it's not rolled into MythTV proper... see #1 above.
> >
> >         Lather, rinse, repeat.
> >
> >         One other point to note is that the ivtv does a *horrible* job of
> > producing low-mid quality captures.  If one is trying to build a
> > broadcast-quality archive DVD, they cannot record at a low enough bitrate
> > to do so straight off the card without crappy quality.  I use a 2-pass
> > transcode to get very acceptable 2.2 Mbps 352x480 archival DVDs.  Roughly
> > 760MB per 42-minute show.  That's 6 "hour-long" shows on one DVD.  If you
> > try to capture at that directly, it'll look horrible.
> >
> >   -Cory
> >
> > *************************************************************************
> > * Cory Papenfuss                                                        *
> > * Electrical Engineering candidate Ph.D. graduate student               *
> > * Virginia Polytechnic Institute and State University                   *
> > *************************************************************************
> >
> >
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> >
> >
> >
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