[mythtv] "Transcoding" PVR-[23]50 output

Russ Southern russ.southern at cox.net
Fri Aug 1 18:37:29 EDT 2003

On Fri, Aug 01, 2003 at 04:54:35PM -0500, Geoffrey Hausheer wrote:
> Grr...dunno what happened to my reply the first time, let's try again...

FWIW, we got your first reply.  I responded with something like, "Sorry,
forgot to include units of measure :-)  I have an Athlon 2400, so it should
not take hours to handle this.  I am almost ready to put out a patch for
mythmkmovie to handle ivtv output.  It (mis)uses mencoder and transcode to
get the job done.  The result is pretty nice, though, with precise frame
cuts (exactly where you put them in the GUI), etc.

Maybe you got lost in the mailing list host change...?

> On Wed, 30 Jul 2003 14:27:10 -0500, "Russ Southern
> russ.southern-at-cox.net |mythtv/1.0-Allow|"
> <mn39hiurn30t at sneakemail.com> said:
> > (Posted to MythTV-Dev since I'm testing against latest CVS)
> >
> > Greetings,
> >
> > Sorry for the interminable post - trying to cover all the bases.
> >
> > Summary: I want to re-encode/transcode MPEG files, using MythTV's cut
> > list.
> >
> > I've been working in vain the last few days to concoct a
> > commercial-cutting,
> > re-encoding solution for PVR-250 MPEG files.  Looking for opinions before
> > I go off the deep end...
> In theory this should have worked (though a 100MB file sounds way too
> small).  However, I've never tested it, so I can't say.  on my 1.6GHz
> box, I can transcode at ~1:1.2 realtime from rtjpeg to mpeg4 9so it takes
> about 1:20 to encode 1hr of video.  That is without reencoding the audio.
> So I dunno what kind of box you are running on, as to whether 4hrs for
> 4GB is reasonable or not.  I have a PVR250 sitting here to test the
> transcoder with, but I haven't gotten around to installing it yet.  Note
> that mythtranscode produces an nuv file, so it will only work with a
> patched mencoder.  Also, the method of dealing with cutlists isn't
> supported by the mencoder patch as far as I know, so ~1sec around cuts
> may look pretty nappy.
> .Geoff
> -- 
>   Geoffrey Hausheer
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