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Re: [NOVICE] værktøj til komprimering afdvd-film



On Mon, 14 Feb 2005 15:33:50 +0100
Henrik wrote:

> Er der nogen, der kender et værktøj, der kan lave fx en mpg eller avi 
> fil ud fra en film, man har på DVD?

Interessant spørgsmål! Da det er video, du vil lave, så vil man
starte med at foreslå mplayer. Den bruger "plug-ins" til at
omforme output, så det er ikke ligegyldigt, hvordan mplayer er sat
op/konfigureret/installeret.

Normalt vil mplayer selvfølgelig bare spille en fil, men dens
søster, mencode, kan lave om på streams.


Eksempler fra "man mplayer":


Encoding DVD title #2, only selected chapters
 mencoder  dvd://2  -chapter 10-15 -o title2.avi -oac copy -ovc lavc -lavcopts
 vcodec=mpeg4

Encoding DVD title #2, resizing to 640x480
 mencoder dvd://2 -vf scale=640:480 -o title2.avi -oac copy  -ovc  lavc  -lav-
 copts vcodec=mpeg4

Encoding DVD title #2, resizing to 512xHHH (keep aspect ratio)
 mencoder  dvd://2  -vf  scale -zoom -xy 512 -o title2.avi -oac copy -ovc lavc
 -lavcopts vcodec=mpeg4

The same, but with libavcodec family, MPEG4 (Divx5) compression
 mencoder dvd://2 -o  title2.avi  -ovc  lavc  -lavcopts  vcodec=mpeg4:vhq:vbi-
 trate=1800 -oac copy

=========================================================================

Det fortsætter med mange flere eksempler, og så skal du selv finde ud
af hvad de forskellige ting betyder (-o title2.avi betyder skriv til fil
som hedder title2.avi)

vcodec specificerer codec, som skal bruges (o.s.v. osv.o)

Så søger man i manual-page efter vcodec og ser bla.:

vcodec=<value>
 use the specified codec (default: mpeg4):
          mjpeg
               Motion JPEG
          ljpeg
               Lossless JPEG
etc.etc.

Hvis der er nogen på listen, som har "færdige opskrifter som virker med
en DVD, så husk lige at fortælle hvilken DVD og sprogkode m.v.





-- 
donald_j_axel donax snabela get2net.dk -- http://d-axel.dk/


 
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