[vdr] Re: repackmpeg2-v0.7 (+dvdmenu-0.4.1-jau02 +vdrcutter2)

[Sven Goethel <sgoethel@jausoft.com>]

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On Sunday 05 October 2003 12:34, Gregoire Favre wrote:
> On Sun, Oct 05, 2003 at 04:18:38AM +0200, Sven Goethel wrote:
> > tool-chain could be read like this:
> >
> > 1.)     vdr-recording-dir   --- vdrcutter2 ----> TEMP/PIPE/...
> >
> > 2.)     MPEG-PS,MPEG-PES,.. --- vdrsync.pl ----> MPEG-ES (a/v)
> >                 - vdrsync.pl demuxer demuxes the ES streams (a/v) off the
> > source - vdrsync.pl also synchronizes the resulting a/v ES streams, which
> > is very necessary for dynamic a/v asyncs within VDR recordings !
> >
> > 3.)     MPEG2-ES (huge)     -- requant --> MPEG2_ES (smaller)
> >                 - shortens the video ES using Metakines requant tool !
> >
> > 4.)     MPEG-ES (a/v)       -- mplex   --> MPEG-PS  (DVD-V conformant)
> >                 - mux the ES streams (a/v) back together,
> >                   DVD-V conformant
> >
> > 5.)     MPEG-PS             -- dvdmenu_make.sh  -> DVD-V image (DVD-V)
> >                 - create a burnable DVD-V image
> >                 - incl. title and audio menus !
> >                 - using dvdmenu.pl, dvdauthor
>
> Hello,
>
> great toolchain ;-)
> What I don't understand is why you don't create the DVD structure
> without using M2VRequantizer, obtain a too big DVD, and then choose the
> shrink factor for use with M2VDownsizer to obtain a "full" DVD-5?
>

well .. i have reccmds.conf (example is bundled) entries like this:

1 addto HQ xform-list: echo "adding HQ .." ; \
	printf "cat true 1 %s\n" >> /video/repackmpeg2/xform.lst
2 addto 1.4 xform-list: echo "adding 1.4 .." ; \
	printf "cat true 1.4 %s\n" >> /video/repackmpeg2/xform.lst
3 run   xform-list?: echo "running xform-list .." ; \
	at -f /video/repackmpeg2/repackmpeg2_vdr.sh now \
		>> /video/repackmpeg2/repackmpeg2_vdr.log 2>&1 ; \
		echo "ignore "

the 1st one, says:
	concatenate, delete-source, requant 1 == no requant !
the 2nd one says:
	concatenate, delete-source, requant 1.4 !

then (3) repackmpeg2_vdr.sh is called, which calls ./repackmpeg2.sh


well i personally use requant about 1.2/1.4 just to record 2 movies on one DVD-5,
for very high bitrate movies only.

the quality loss on good sources -> high bitrate etc. is not that bad,
but if the source is allready low bitrated and badly encoded by the provider,
you better choose no requant - true. the latter ain't a a problem, 'cause
such recordings are allready not that huge.

> With this solution, you loose the minimum of the quality...
>

of course .. you can choose ;-)
i choose a balance of quality and ressources ;-)

> Thank for all tools!!!
>

i am happy if this stuff is usefull and if it helps a bit.

> 	Grégoire

cheers, sven

- -- 
health & wealth
mailto:sgoethel@jausoft.com
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
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