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Date:      Tue, 26 Mar 2002 22:22:30 +0100 (CET)
From:      Søren Schmidt <sos@freebsd.dk>
To:        Michael Nottebrock <michaelnottebrock@gmx.net>
Cc:        Mathew Kanner <mat@cnd.mcgill.ca>, freebsd-multimedia@FreeBSD.ORG
Subject:   Re: playing DVD works
Message-ID:  <200203262122.g2QLMZt51205@freebsd.dk>
In-Reply-To: <3CA0DD21.7040806@gmx.net>

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It seems Michael Nottebrock wrote:
> Mathew Kanner wrote:
> > 	Just a note to the list to say that playing DVDs does indeed
> > work.  I borrowed my friends Austin Powers DVD and tried to play it.
> > I installed the CVS version of mplayer (from last night)
> > 
> > mplayer -dvd 1 -dvd-device /dev/acd1c  -cache 20960
> 
> I never knew that the "cache" parameter existed. :) I already get smooth 
> playback with -cache 512, but I really wonder why the software needs to 
> precache in order to achieve full framerate. The dvd-drive is an atapi 
> triple-speed and I never had problems getting full framerate on the same 
> machine with the same drive in Linux or Windows (and yes, UDMA is on), 
> so maybe there is some kind of inefficiency/weirdness in ata causing all 
> the trouble? Are there any means to influence read-ahead-caching and the 
> like via sysctl?

*BSD doesn't do readhead, and neither does any of the drivers AFAIK...

-Søren

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