[linux-dvb] Re: Conversion to DivX...

["[Windows-1252] Jörg-Oliver Todamm" <jtodamm@itc-consult.de>]

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Hi,

I just managed to implement the M4C code to MPEG2DivX and working on
SBC, but this is slowed down. There are still some "Features" (no, its
not a bug, its a feature!!!) in it and I working to correct them. I
intend to send my version to the author of mpeg2divx when its done.

Right now, the convertion on my linux box runns well, with about 3-5 fps
including scaling and 4 parallel output-streams (for different bitrate,
you can select the best of size and quality).

SBC seems to be very complex and a lot of work, so priority is very low.
Next I will improve my MPEG-Encoder to perform well for transcoding and
DivX2MPEG conversion. There is also a long way to go.
And there are also so many ideas to enhance VDR, but cloning myself is
not an option :-)

So long,

Joerg-Oliver Todamm

> -----Original Message-----
> From: Roland Praml [mailto:pram2000@web.de]
> Sent: Samstag, 28. April 2001 12:12
> To: Mario Goegel; linux-dvb@linuxtv.org
> Subject: [linux-dvb] Conversion to DivX...
> 
> 
> > > if you want, I can post the script that do mplexing and the
> conversation.
> >
> > great, do that.
> >
> first I have to say,my VDR names the recording files with the 
> filesuffix
> ".mpg" not
> ".vdr" because then I can directly play the files with 
> AsusDVD (PowerDVD) on
> my
> Windows machine. Maybe you must do some changes in the script.
> 
> the first part of the script handles the mplexing of the VDR files.
> the second part start mpeg2divx with the new files.
> 
> I have mpeg2divx 0.8 but I added the line
> 
>         IVideoEncoder::SetExtendedAttr(codec, "Crispness", 80);
> 
> in mpeg2divx.cpp at line 214 (sorry, but I don't know how to 
> make and post a
> patch)
> I think this increases the picture quality a bit.
> 
> for the movies from PRO7 (they have the right format 720 x 
> 576) change to
> the dir
> where the files are and start
> 
>     nice DivX -b 4000 -c 80
> 
> the -c 80 option is for 16:9 movies to clip the black lines 
> from top/bottom
> the -b 4000 is the "bitrate" of the Avi-File. You must divide 
> that by 38
> the out.avi has a Bitrate: 4000/38=105 kByte/s. So A 110 
> minute movie has
> about
> 700 MByte. I start the script with "nice" so that the other 
> processes like
> VDR
> can run smooth on the box. On a k6-2 400 I get about 5 fps.
> 
> if you have recordings that are not 720 pixels wide (e.g. 480 
> from RTL2) you
> have
> to add the option -w 720. Scaling needs lot of power so that 
> I only get 1.5
> fps
> 
> If I encode a new movie I first cut the movie with VDR. Then 
> I encode about
> 500 frames (-e 500), watch the result with Windows 
> Mediaplayer if the format
> and clipping is correct adjusted, then I encode the whole movie.
> 
> feel free to ask me, if you have questions or ideas how to 
> make the script
> better.
> 
> Roland
> 
> ---------- the DivX script ------------------
> #!/bin/bash
> 
> FILES=`ls 0*.mpg`
> if [ -z "$1"]; then
>     echo no params;
>     exit 1;
>     fi
> for FILE in $FILES; do
>     echo "Converting: $FILE";
>     if ! test -e $FILE.mpx; then
>         mplex -o $FILE.out -t MPEG2 $FILE
>         touch $FILE.mpx;
>     fi;
> done
> 
> 
> 
> FILES=`ls 0*.mpg.out`
> ALL=""
> for FILE in $FILES; do
>     ALL="$ALL $FILE"
> done
> echo "Starte mplex mit $1 $2 $3 $4 $5 $6 $7 $8 $ALL out.avi";
> mpeg2divx $1 $2 $3 $4 $5 $6 $7 $8 $ALL out.avi;
> 
> ------------------------------------
> 
> 
> 
> 
> 
> 
> 
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