[MPlayer-users] [Local HD-DVD or Blue-Ray playback off Discs]

[Mike Mohr]

not at the moment.  F/OSS players are nearly here, though:

* AACS is well understood.  There is no known crack for it, though: it
is based on solid crypto.  At this point it is a cat-and-mouse game
between content providers revoking keys and the community finding new
ones.

* BD+ was only recently reverse engineered.  There is a reference
virtual machine written in Java that produces the xor table used to
recover AACS-stripped video.  No player to my knownedge currently
implements BD+ support.

* Even if AACS and BD+ are stripped, no player currently available is
capable of parsing the equivalent of "vob" information.  You have to
read the mpeg transport stream directly from disc, and a whole video
may be split across several containers.

* mplayer currently requires that the demuxer and other options be
explicitly specified, as it is apparently incapable of detecting it
automatically.  Additionally, even on a very fast machine, you need at
least dual cores to render the video at any reasonable framerate.  I
put this in ~/.mplayer/config:

[bluray]
profile-desc="Blu-Ray mpeg2 transport stream"
demuxer=lavf
#ac=ffeac3
#ac=hwac3
fps=24000/1001
fs=true
cache=524288
# this option produces video "tearing"
# lavdopts=threads=2
# uncomment this for a speedup & quality loss
lavdopts=threads=2:fast=true:skiploopfilter=all

* you need to put the following line in /etc/sysctl.conf:

dev.rtc.max-user-freq = 1024

otherwise you may experience video corruption or tearing.

Even with all of this, mplayer can't really render an enjoyable movie.
 the video freezes every 30 seconds or so, and mplayer reports
something along the lines of "too many packets in buffer" after just a
few minutes of playback.

Mike

On Thu, Nov 6, 2008 at 3:24 PM, John Smith <antlamp at inorbit.com> wrote:
> Hi, can Blue-Ray or HD-DVD content be extracted as a local hi-def
> playback file? :))
>
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