Re: AKICIF: Television Formats
- From: mike weber <fairportfan@xxxxxxxxx>
- Date: Tue, 23 Sep 2008 20:18:58 -0400
On Tue, 23 Sep 2008 16:41:35 -0600, Steve Coltrin <spcoltri@xxxxxxxx>
wrote:
begin fnord
Ben Yalow <ybmcu@xxxxxxxxx> writes:
Generally, new discs won't play in older players, since the older players
don't understand the new handshake that the new discs use.
How old is older? My mother's DVD player is closing on its first decade,
and I haven't seen it choke on any disc.
Which is what i've been saying. Here's the scoop on the Sony DRM that
i mentioned that, as i recall, started this subthread:
[quote]
ARccOS is a copy-protection system developed by Sony used on some
DVDs. Designed as an additional layer to be used in conjunction with
Content Scramble System (CSS), the system deliberately creates
corrupted sectors on the DVD, which cause copying software to produce
errors. Allegedly, "Normal" DVD players do not read these sectors
since they follow a set of instructions encoded on the disc telling
them to skip them. However, many users with "normal" DVD players still
report unplayable discs, and in some cases total lock-up of their
players. Less sophisticated DVD copying programs do not follow these
instructions and instead try to read every sector on the disk
sequentially, including the bad ones.
RipIt for the Mac, Slysoft's AnyDVD, Fengtao's DVDFab Decrypter,
RipIt4Me + DVD Decrypter, FixVTS, DVD43, MacTheRipper, along with VLC
media player, GNU ddrescue, dd_rescue and MPlayer/MEncoder (for Linux)
are usually able to overcome ARccOS.
ARccOS had reportedly been discontinued by Sony in February 2006.
However, several high-profile releases since then have used it,
including the region 1 DVDs for Hostel, Underworld: Evolution, Running
With Scissors, and Casino Royale. Many DVDs by Disney, Touchstone
Pictures, and The Weinstein Company also use ARccOS including Pirates
of the Caribbean: Dead Man's Chest, Cars, Flightplan, The U.S. vs.
John Lennon, Lucky Number Slevin, and Ratatouille. Hairspray appears
to also be encumbered with ARccOS. Many DVD rental companies are now
warning users that the Sony DVDs in question may not play on their
machines.
Despite being promoted as "fully compatible with available DVD players
and drives," some DVD players cannot play movies with ARccOS: Sony
DVPCX995, Toshiba SD4700, Harman Kardon DVD101, Microsoft Xbox and
others. Sony has announced a future firmware update for their players
to fix this incompatibility issue. One revision of the ARccOS scheme
used by Sony was incompatible with a higher number of players than
average. Sony has offered to replace those discs for owners having
problems; the replacement discs will have a newer version of ARccOS
coding on them, which Sony claims is more compatible.
[end quote]
(from Wikipedia); http://en.wikipedia.org/wiki/ARccOS_Protection
I see at least three disks on that list that i know can be copied with
the right software, no matter what happens with regular players.
.
- References:
- AKICIF: Television Formats
- From: Dorothy J Heydt
- Re: AKICIF: Television Formats
- From: Ben Yalow
- Re: AKICIF: Television Formats
- From: Keith F. Lynch
- Re: AKICIF: Television Formats
- From: Ben Yalow
- Re: AKICIF: Television Formats
- From: Keith F. Lynch
- Re: AKICIF: Television Formats
- From: Ben Yalow
- Re: AKICIF: Television Formats
- From: Steve Coltrin
- AKICIF: Television Formats
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