Date: Sat, 1 Sep 2001 12:34:14 +0200 From: German Tischler <tanis@gaspode.franken.de> To: Nick Sayer <nsayer@FreeBSD.ORG> Cc: freebsd-multimedia@FreeBSD.ORG Subject: Re: Slow DVD? Message-ID: <20010901123414.A1694@gaspode.franken.de> In-Reply-To: <200108312000.f7VK06d00646@morpheus.kfu.com>; from nsayer@FreeBSD.ORG on Fri, Aug 31, 2001 at 01:00:04PM -0700 References: <200108312000.f7VK06d00646@morpheus.kfu.com>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] On Fri, Aug 31, 2001 at 01:00:04PM -0700, Nick Sayer wrote: > I have been disappointed so far with just about all the DVD playback options > available, but I believe I have an explanation now. > > I have a relatively old DVDROM drive. The virtue of it is that it's > regionless. Here's what the kernel has to say: > > cd1 at ahc0 bus 0 target 5 lun 0 > cd1: <PIONEER DVD-ROM DVD-303 1.09> Removable CD-ROM SCSI-2 device > cd1: 20.000MB/s transfers (20.000MHz, offset 8) > > If someone were to "rip" a movie using a particularly naughty piece of > software, it turns out that xine and vlc can both play the resulting mpg file > perfectly. > > If someone were to use naughty versions of xine or vlc, one would find that > the playback skipped a lot of frames and looked basically crappy, but the CPU > is 60% idle. > > These two circumstances tell me that perhaps the drive itself is the > bottleneck. Does anyone know of any magic sysctls I might try on cam to speed > things up? Do you see a performance difference between vlc directly reading a DVD and vlc reading an mpeg file on a DVD mounted as a filesystem ? --gt [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iQEVAwUBO5C5pb7hO6NLB/FvAQHTAQgAmWf+eMSU0dwAMZ+VR5Zwzp+AyBu/GbM3 OaLdgPdb9Z20FIU3fZsDPUREHwti6QqvQZEjklAyUpFKzRx4Ox345KvXXvFFh9FP Gmea4TQMn6nVhiYZRa9y74O+Z4CZ8busaREoN2swiQ6Ps7imQPSJKEnhFfjFHogZ Ga7HmwVexUHnbwdBM7KPFLsDukaSzqN5BhzsCqpJQZ++ZQVEUKpaA6fguHdu40hN JdI7t3IaBb3zuSMIbhYMhB6EYl13oqPmLr2/38Nt+sUImMi323gEyIiXZeyCj+0u UzNW9deGqJGbsi/TFfXf7KeqB88rhPjaue17nX5cFqYfl0u1JWe4qw== =5wLJ -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010901123414.A1694>