[mythtv-users] Archiving TV shows to DVD

M S skd5aner at gmail.com
Mon Jan 24 19:13:47 EST 2005


I tried teh MPEG2 -> MPEG2, but the resulting movies are really kind
of grainy and the color is off and there apears to be almost what I
can describe as a faint picture and picture of th exact same show in
the upper left hand corner.  Anyone know how to solve this?


On Mon, 24 Jan 2005 17:42:04 -0500, William <wmunson at rochester.rr.com> wrote:
> > My problem is even easier...I dont want to cut
> > commercials...just burn straight to dvd from the .nuv files.
> > I have a pvr-250.
> 
> Here is the script I use to burn a single recorded show (movie) to dvd. I
> also use a pvr-250 for capture. Because I display on a HDTV monitor I run
> quite high bitrates (5500/10000 peak) and many movies get too big for a disk
> without shrinking so I built an automatic shrink into the script. Here is
> the process.
> 
> I run the mythlink.sh script to create a directory of nicely named links to
> the .nuv files. Then I use avidemux2 to open the file and to split the audio
> and video into two files named aud and vid. I also use avidemux2 to trim off
> the junk at the start and end of the show. Once the files are created you
> are done with avidemux2. Next I run this fully automated script to create
> the dvd structure and burn it to disk.
> 
> ---------snip----------
> 
> #!/bin/bash
> 
> echo Remove any old files laying around
> rm -drf mydvd
> rm -f mydvd.tmp
> echo Checking video size...
> # Calculate the requantization factor
> vsize=`ls -l ./vid | awk '{print $5}'`
> vsize=`echo $vsize / 1048576 | bc`
> echo "vsize = $vsize"
> asize=`ls -l ./aud | awk '{print $5}'`
> asize=`echo $asize / 1048576 | bc`
> echo "asize = $asize"
> req=`echo "($vsize + $asize) / 4550" | bc -ql`
> echo "requant factor = $req"
> # test to see if the first char is a period. If it is, no shrinking needed.
> if [ ${req:0:1} = "." ];
> then
>   echo Shrinking not required!!
> else
>   echo Shrinking the video to fit the disk....
>   req=`echo "$req + 0.1" | bc -ql`
>   echo Reduction Factor: $req
>   echo Note: vid has been saved as vid-full
>   mv -f vid vid-full
>   tcrequant -i vid-full -o vid -f $req
> fi
> 
> # Note: the "-O 5995mpt" in mplex creates the proper audio sync for stuff
> recorded
> # with a pvr-250. Without it the sound track is about 1/2 second behind the
> video.
> mplex -f 8 -O 5995mpt -V -o mydvd.tmp aud vid
> 
> echo "creating dvd file system"
> dvdauthor -o mydvd -f mydvd.tmp
> dvdauthor -o mydvd -T
> rm -f mydvd.tmp
> 
> echo Burning DVD
> /usr/local/bin/growisofs -Z /dev/scd0 -dvd-video mydvd
> 
> --------------snip---------------
> 
> 
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