71 lines
2.5 KiB
Plaintext
71 lines
2.5 KiB
Plaintext
Ogle is a dvd player with support for menus and
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subtitles, and fairly good audio/video
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synchronization.
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Due to limitations in OpenBSD, it cannot
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use any audio 5.1 output system and will always
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output stereo sound.
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Other video applications like mplayer and vlc exist,
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that play more video formats, and can play mpeg2 video
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from the disk, but ogle currently has better synchronization
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and extensive menu support.
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As shipped, ogle cannot descramble DVDs. There are
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a few DVDs out there with no scramble protection.
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However, ogle will recognize and use an installed
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descrambling library (see converters/libdvd in the
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ports tree).
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As shipped, ogle has a text-based interface.
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The ogle_gui, okle, and goggles yield alternative
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GUI interfaces.
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To run ogle, you need a graphics card well supported
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by Xorg, including the Xvideo extension in YUV mode,
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and a sound card with 48KHz output (ATI card owners
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may wish to use the ATI-4.1.0.i386.tgz package)
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You can check your display Xvideo capabilities with
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xdpyinfo (presence of the Xvideo extension) and
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xvinfo (presence of an adapter with correct YUV
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capabilities).
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A positive test will usually look like:
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xvinfo
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Number of image formats: 4
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...
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id: 0x32315659 (YV12)
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guid: 59563132-0000-0010-8000-00aa00389b71
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...
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which is the encoding that ogle is looking for.
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Alternately, at the expense of more cpu power,
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ogle can also use SystemV shared memory, but the
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shared memory requirements exceed default GENERIC parameters.
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You will need to crank them up.
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Starting with OpenBSD 3.3, sysctl(8) can modify the shared memory
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parameters. A reasonable choice would be:
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kern.shminfo.shmseg=32
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kern.shminfo.shmall=32768
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(to add to /etc/sysctl.conf, or to tweak manually with sysctl).
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Overall, ogle needs about 50% cpu for full-framerate decoding
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on a PIII700 with an ATI Mach64 Mobility and an ESS
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Maestro 2.
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If Xvideo YV12 is not available, ogle roughly needs 120% cpu
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on the same machine in 24 bits mode, and full screen rescale
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is not available. On i386, it's highly recommended to go
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to a 16 bits mode, where MMX acceleration code exists (requirements
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go down to 70% cpu).
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If you can, you may also wish to add several `non-standard'
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modes to your xorg.conf. The most useful being 720x576.
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FLAVORS: altivec (ppc only)
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Uses altivec vector unit for a huge speed-up. Only works on
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powerpc platform with altivec hardware support.
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Altivec is present on all PowerPC G4 processors. Altivec is
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not present on G3 or earlier (60x) processors.
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