CLV discs running over 60 minutes per side
Nicolas Santini
It came to my attention a while ago that some CLV discs run MORE than
60 minutes per side. One of "you" explained to me that the LD standard
actually allowed for significantly more than 60 minutes. I wonder why
this feature was not used more often: possible compatibility problem ?
There are so many movies which would have benefited, either by chosing
a better timed side break, or by allowing the whole to fit into 1 disc
instead of 2 (also likely resulting in lower manufacture & retail
costs). The recent thread on Saturday Night Fever, with this story of
incomplete end titles, reminded me of that issue.
Nicolas
Todd Spangler
a CLV disc side. The most I've ever seen is around 60:02.
Todd
The.Central.Scru...@invalid.pobox.com
Usually the side with the titles is CAV to allow freeze framing the hardware of
the day.
Subtracting the time for the CAV side, there is almost always too much to fit
on the remaining side via CLV, but not enough to require more than 55-60
minutes/side.
Andrea
the standard CLV time for the PAL format is about 72 minutes,
and about 36 minutes for the CAV discs.
Andrea
"Nicolas Santini" <n...@dk.catv.ne.jp> ha scritto nel messaggio
news:13d89e92.02082...@posting.google.com...
Nicolas Santini
> According to Douglas Pratt's book, the maximum playing time is 60:12 on
> a CLV disc side. The most I've ever seen is around 60:02.
> Todd
Blade PILF-7399 (Dolby Digital) has 60 minutes 40 seconds on side A.
Anyone wants a copy to check for himself, i can provide one new/sealed
for $58.75 + postage... (believe me, this was not the original purpose
of the thread !)
I was told Pioneer had 5 versions of Extended play, holding from 45 to
70 minutes, and that the 65 minutes versions was used several times. I
wonder why it was not used systematically each time the material would
require it, the way they did for Blade.
I ran a simple statistic on my Japanese LD database, for movies. There
were:
- 119 releases with running times 115 to 120 minutes, which might have
benefited from better timing of the side break
- 171 releases with running times 121 to 140 minutes, which could have
been released on one disc instead of two
Not to mention the fact a whole lot more of extras could have fit into
a disc running 130 or 140 minutes.
Nicolas
Brian Simmons
only disc I'm aware that I have that's over 60 minutes per side.
Side A is 60 minutes 45 seconds. Side B is 60 minutes 40 seconds.
I would assume that it was probably a player compatibility problem. From
what I've heard the Sony's weren't able to handle discs very well that
weren't properly replicated. They might not have been able to handle the
amount of wobble at the extreme outer edge of the disc. So rather than have
incompatibility problems, they must have just played it safe and didn't go
over 60 minutes if they didn't have to.
Brian
"Nicolas Santini" <n...@dk.catv.ne.jp> wrote in message
news:13d89e92.02082...@posting.google.com...
Joshua Zyber
news:iaO99.65660$aA.13143@sccrnsc02...
> Just checked the run times of my copy of Who Am I? (PILF-2820) as
that's the
> only disc I'm aware that I have that's over 60 minutes per side.
>
> Side A is 60 minutes 45 seconds. Side B is 60 minutes 40 seconds.
>
> I would assume that it was probably a player compatibility problem.
From
> what I've heard the Sony's weren't able to handle discs very well that
> weren't properly replicated. They might not have been able to handle
the
> amount of wobble at the extreme outer edge of the disc. So rather than
have
> incompatibility problems, they must have just played it safe and
didn't go
> over 60 minutes if they didn't have to.
Also, if the laser in the LD player is even slightly out of alignment it
may have difficulty reading the outer edge of the disc, whereas a disc
that ends under the 60-minute mark will play fine on the same machine.
I have a couple of CAV discs with content crammed right to the outer
edge (like the Criterion edition of Bram Stoker's Dracula) that I use as
my litmus test for laser alignment. If the laser is slightly out of
alignment, the disc will start skipping. When a machine can read this
disc without skipping, I'm satisfied with its calibration.
It seems to me that the same would apply to CLV/CAA.
- Josh
Thad Floryan
| Just checked the run times of my copy of Who Am I? (PILF-2820) as that's the
| only disc I'm aware that I have that's over 60 minutes per side.
|
| Side A is 60 minutes 45 seconds. Side B is 60 minutes 40 seconds.
|
| I would assume that it was probably a player compatibility problem. From
| what I've heard the Sony's weren't able to handle discs very well that
Not surprising; the SONY DADC-USA plant was notorious for being unable to
properly replicate LDs.
Brian Simmons
manufactured discs very well. But They were supposed to play back a perfect
LD quite well.
Now, just find yourself a perfectly replicated LD....
"Thad Floryan" <th...@thadlabs.com> wrote in message
news:8ZS99.96768$Yb1....@sea-read.news.verio.net...
Todd Spangler
> a CLV disc side. The most I've ever seen is around 60:02.
> Todd
Well, make that 60:07. I was watching side one of disc one of the
Classics of Early Soviet Cinema Vol.2 box set last night, and this is
what the display on my CLD-95 read at the end of the side. The
unusual length was because there is a sudden change in rhythm in the
film (Storm Over Asia) about one hour into it, a perfect place for a
side change. The typical Image intro was also abbreviated to
facilitate this.
Your experience with these discs of playing times such as 60:40 per
side is interesting and is outside of my experience. It seems to me
that the rotational speed would need to go below 600 rpm towards the
outer edge of a disc with 70 minutes of CLV content--this would not
conform to the LD standard as I understand it. Or is this a case, as
with later CDs, where the track spirals have been placed closer
together to allow longer play times? Does anyone else have some
thoughts on this?
Todd