[MPlayer-users] Playing from a DVD image

Haas Wernfried amnenion at xover.htu.tuwien.ac.at
Sat Jul 27 20:20:14 CEST 2002

oops, i think i didn't express myself clearly ;)
i ment that i got the errors already when i tried to cat /dev/dvd > imagefile
don't really remember what kind of errormessage it was (was there one?)
but i produced images with size of a few megs (and of course not really
everything on it). are your dvds used in that case protected by css?
if yes, either dd works where cat fails or my dvd drive sucks ;)


On Sat, Jul 27, 2002 at 07:48:51PM +0200, Thilo Schulz wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Am Samstag, 27. Juli 2002 19:44 schrieb Haas Wernfried:
> > does that actually work?
> > iirc i once tried cat /dev/dvd > image and got quite some errors with
> > dvds that had CSS on them. so i am wondering if this actually works with
> > dd. i just can't try it myself because i don't have any DVDs lying around
> > right now.
> The reason for this is, as i guess, that the libmpdvdkit in mplayer needs 
> actually a dvd decive to check with the descrambling keys, (i tried to let 
> mplayer use a loop back device by having the dd image bound to /dev/loop0) 
> but strace only returns following:
> ioctl(6, 0x5392, 0xbfffe5f4) = -1 EINVAL (Invalid argument) 
> ioctl(6, 0x5392, 0xbfffe5f4) = -1 EINVAL (Invalid argument) 
> ioctl(6, 0x5392, 0xbfffe5f4) = -1 EINVAL (Invalid argument) 
> while being apparently trapped in an infinite loop .. well, so i remembered 
> ogle uses libdvdread, and mplayer can be compiled to use these libraries as 
> well ... and voilà, it works directly with the raw file by starting mplayer 
> like this:
> mplayer -dvd 1 -dvd-device ./rawimage
> - Thilo Schulz
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-> Wernfried Haas - w.haas at xover.mud.at / amnenion at xover.mud.at 
-> Homepage: http://xover.mud.at/~amnenion
-> Beutelland: http://bl.mud.at

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