[mythtv-users] RE:Sanity check for PVR-250 to DVD+R

[James L. Paul]

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On Wednesday 10 December 2003 16:53, Shane Hetzel wrote:
> Does he need to change his stream type from MPEG2-PS to DVD?

MPEG2-PS _is_ a standard (and most the most common) stream source type for 
creating DVDs. :)

> I've never completely understood the differences in stream types,
> especially when it pertains to the DVD standard. If I plan to archive my
> recordings someday, do I need to start doing it as streamtype=DVD?
> Or doesn't it matter since I'll probably re-encode to remove the
> commercials, anyway?

Ahh, I see what you mean, the MythTV streamtype setting. A DVD setting for 
that will presumably output an MPEG2-PS stream that happens to be whatever 
resolution and bitrate the firmware thinks is appropriate for DVD. I haven't 
used that setting, I just use MPEG2=PS and set the bitrate, etc. I want. For 
all I know I'd get exactly the same results using the DVD setting, I just 
prefer to set the specifics myself. :)

> -Shane
>
>
> ----- Original Message -----
> From: " James L. Paul" <james at mauibay.net>
> To: "Discussion about mythtv" <mythtv-users at mythtv.org>
> Sent: Wednesday, December 10, 2003 4:21 PM
> Subject: Re: [mythtv-users] RE:Sanity check for PVR-250 to DVD+R
>
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> > On Wednesday 10 December 2003 08:31, Couvrette, Jeffrey C. wrote:
> > > I can't comment on all your settings, but my recommendation is that you
> > > encode at 352x480 if you're bitrate is only going to be 3500.  That way
>
> you
>
> > > have more information per pixel than if you were to double the number
> > > of pixels using 720x480.  If you want to use 720x480, I would suggest
> > > using
>
> a
>
> > > higher bitrate.
> > >
> > >
> > >
> > > Also, as far as I am aware, if you want to do everything in Linux and
>
> make
>
> > > DVD+R's that are playable in standalone DVD players, you will have to
> > > re-encode.  I follow the process shown in:
> >
> > Not true. There's no need to re-encode the PVR-250 output with the
>
> settings we
>
> > are talking about. The whole point of this thread is what settings he
>
> wants
>
> > to use so as to _avoid_ needing to re-encode, and I simply confirmed his
> > request for a sanity check.
> >
> > There's nothing about using Linux rather than some other platform that
> > requires you to re-encode video that is already DVD compliant. :)
>
> Likewise,
>
> > the particular type of DVD writeable disc has no bearing on the video
>
> stream
>
> > spec.
> >
> > > http://www.gossamer-threads.com/perl/mailarc/gforum.cgi?post=92621
> >
> > I'm not aware of anything in that thread that concludes that re-encoding
>
> would
>
> > be necessary. It's mostly us discussing the particulars of how to author
> > a DVD containing compliant captured video. :)
> >
> > > >Ok, after reading two days worth of threads, this is
> > > >what I *think* I need to set my Myth box up for
> > > >straight PVR-250 MPG to DVD+R archiving. I'm running
> > > >NTSC on an analog TV with the idea of going digital
> > > >HDTV in the next two years. If those experienced users
> > > >could please comment, it would be most appreciated.
> > > >
> > > >DEFAULT Profile (although I plan on making LIVE TV and
> > > >HIGH QUALITY the same. Is this the correct thing to
> > > >do?)
> > > >
> > > >Width 720x480 as that will get me better potential
> > > >quality than 352X480, correct?
> > > >
> > > >Video Compression
> > > >Codec: MPEG-2 Hardware Encoder
> > > >Stream Type: MPEG-2 PS
> > > >Aspect Ratio: 4:3
> > > >Bitrate: 3500 with a max of 5000
> > > >
> > > >Audio Quality
> > > >Codec: MPEG-2 Hardware Encoder
> > > >Sampling Rate: 4800
> > > >Type: Layer II (what's Layer I?)
> > > >Bitrate: 224
> > > >Volume: 100%
> > > >
> > > >Is this correct or did I miss something for straight
> > > >from PVR-250 to DVD+R with no reencoding?
> > > >
> > > >Thanks!
> >
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