I suggest anyone with similar should do the same. before it is too late.
Gary
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Yup. The DV tapes I have in a box in the garage going back 10-12 years
have fared much better. Perfect they were, compared to the thin layer
DVD-RWs I used for TV viewing. Time to re-load them onto a hard drive
instead of DVD.
>Yup. The DV tapes I have in a box in the garage going back 10-12 years
>have fared much better. Perfect they were, compared to the thin layer
>DVD-RWs I used for TV viewing. Time to re-load them onto a hard drive
>instead of DVD.
I still have Video 8 tapes from 1988 which replay with no problems.
--
Alan White
Mozilla Firefox and Forte Agent.
Twenty-eight miles NW of Glasgow, overlooking Lochs Long and Goil in Argyll, Scotland.
Webcam and weather:- http://windycroft.gt-britain.co.uk/weather
The best back up for home recorded DVD's is the original tape. The only
problem with that is years down the road, you will have a hard time finding
a working machine to play them on.
I will take one exception to your comments though. The video quality on
DVD's does not get "fuzzy" over time like a tape might do. They can refuse
to play, or skip and freeze, or even get pixilated, but not fuzzy.
-Bill
> The video quality on
> DVD's does not get "fuzzy" over time like a tape might do. They can
> refuse
> to play, or skip and freeze, or even get pixilated, but not fuzzy.
A lot depends on the blank media you use, and the performance of
the burner.
yeah, I keep meaning to reburn ours
--
Paul (we break easy)
-------------------------------------------------------
Stop and Look
http://www.geocities.com/dreamst8me/
Yep - recordable optical media seems to become unreadable in a few years.
I've noticed this too. I used to backup my Playstation 1 games and use the
backups. They were expensive branded CDs, and now all of them (10 years
later) are unreadable.
I read a page online about this phenomenon a few years ago, and the theory
was that over time normal light (from sun, bulbs, etc) would blank the
discs. While the laser (which is just light of a specific wavelength) was
much more powerful, it was only on each bit (or pit) of the disc for an
extremely short time. Over the years, the ambient light adds up to a pass
with the laser. I'm not saying this is true, but it's what I read, and I do
have some support for this as media I've kept in a metal safe (i.e. dark)
has been fine, despite being recorded on the same burner and the media being
the same type.
--
Vincent
so on that note would stuff being kept in proper dvd cases not be well
protected?
--
Clint Sharp
Gary
Gary
No and the disks I am having problems with are 2 different types 1 is a
DVD -r and one is a DVD+rw
The -r disk disk is not even registering as a disk even though you can see
it has tracks burnt. similar the +rw but I have not had time to investigate
this one yet.
Nero disk analyzer can see the tracks but I cannot lift the tracks. any
help would be appreciated.
they were both in proper black DVD cases.
Gary
Gary
> Mine were in proper DVD cases
>
> Gary
so that quashes the idea that direct sunlight is the main cause of
damage
I on ly ask about the labels as the glue has been known to cause
problems. Try looking for a software for recovering dvd data. as it's
only one disc you could probably use a demo version of one...
something like this?
http://www.diskinternals.com/cd-dvd-recovery/
this one is free so might be worth a try
http://www.softwarepatch.com/software/cd-recovery.html
It may be that although they look black to us that some 'light' frequencies
would still see it as transparent?
--
Paul S
could well be, I know some of them are at least opaque. Mine stand in
a shelf which is out of direct sunlight too.
I've had the same experience with discs from only 5-10 years ago:
those kept in their jewel cases in a cardboard box are fine. Those
kept in their jewel cases out in the open are less so, and a couple
kept out of their jewel cases out in the open are wrecked. It's not
scratches - one was half under a sheet of paper for 6 months (I'm not
the tidiest person in the world!) it was a different colour where the
light reach it - and Nero CD-DVD speed reported huge bursts of errors
in the part that was exposed to light.
As for home movies on DVD-R: those written by standard-alone DVD
recorders (i.e. the type that record in real time, also from live TV)
aren't always standards-compliant when first written.
Cheers,
David.
Or sunlight could be one of several ways that discs get damaged...
Whatever the cause though, I think it's fair to say that optical media isn't
very reliable for long term (greater than 5 years) storage.
--
Vincent
For write once or RW discs thats certainly true, but for factory pressed
discs then as long as you treat them well they should last for decades.
B2003
Hence the statement 'optical media for storage' ?
Well I don't know about you but I using the word storing for when I keep
programs/audio/video/whatever on factory pressed discs.
B2003
didn't they used to call it disc rot or something?
I remember that being mentioned for CDs where the paint chemicals
could eat through from underneath, but I don't recall anything like
that for DVDs.
I found some blank CDs from a few years ago still in their tub in a
cupboard and they've all gone yellow(ish). Haven't tried them out yet
but I don't actually need them.
--
Clint Sharp
> Sunlight, humidity. Temperature changes and time can all kill writeable
> media.
You forgot oxidation.
Not that keeping them in the dark, in a mu-metal box (best to cover
everything), under vacuum, in a dessicator (just in case of any residual
air,
or from moisture released by any organic component), at a constant
4 degrees C, is viable for most of us.
What is the life of data stored on a disk drive that is only turned on
to access the data?
Like if I transfer all my multi-media stuff on to a 1 or 2TB drive?
Come to think of it, with a vacuum pump, and fused glass
feed-throughs, I could evacuate the chamber, and keep it in the
fridge. Won't take up much room.
What about cosmic rays?
Better store them two miles down at the bottom of an abandoned mine to be on
the safe side.
--
Max Demian
Look for the term "archive". There are some (more expensive) discs
designed for that purpose. We also buy a lot rated "medical" which seem
to be better - not that long term is our requirement.
Andy
Other than knocking the disk and drive out of balance i cannot see how a label
can affect a DVD+-R disk???? The data is sandwiched between two plastic
layers, unlike CDR's that had the data at the top of the disk under a thing
coating.
>Like if I transfer all my multi-media stuff on to a 1 or 2TB drive?
>
>Come to think of it, with a vacuum pump, and fused glass
>feed-throughs, I could evacuate the chamber, and keep it in the
>fridge.
Don't try to run a hard drive in vacuum. The heads fly on a cushion of
air to avoid crashing into the platters.
Pure nitrogen might work.
--
RoRo
--
Clint Sharp
urgh :O)
ah, I just recall reading a lot about it but mainly when I was
considering a disc drive for the first time, they had been out a while
I resisted the urge to back up my photo cd collection to dvd because I
had read they were much less stable than cdr... probably bollocks but
it would have been a silly risk
not to mention the dust you get in the average vacuum :O)
That might be what happened to some Hyperion CDs some years back. They
went brown and wouldn't play properly. The company put a notice on their
website explaining this and offering free replacement, which they
honoured.
Rod.
--
Virtual Access V6.3 free usenet/email software from
http://sourceforge.net/projects/virtual-access/
Obviously you also need to make sure the discs are not getting scratched or
if stored in a place with no climate control, getting subjected to extremes
in temp. This can do for tapes just as much as CD./DVDs though!
Brian
--
Brian Gaff - bri...@blueyonder.co.uk
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"William Skaggs" <eagle...@att.net> wrote in message
news:hf3b3q$c1l$1...@news.albasani.net...
> "Gary" <g.goo...@dottesco.net> wrote in message
> news:mU7Rm.2482$2l2....@newsfe21.ams2...
>>I have just checked my DVDs with home video on them and some are
>>unreadable and some are fussy.
>>
>> I suggest anyone with similar should do the same. before it is too late.
>>
>> Gary
>
> The best back up for home recorded DVD's is the original tape. The only
> problem with that is years down the road, you will have a hard time
> finding a working machine to play them on.
>
> I will take one exception to your comments though. The video quality on
> DVD's does not get "fuzzy" over time like a tape might do. They can
> refuse to play, or skip and freeze, or even get pixilated, but not fuzzy.
>
> -Bill
>
> didn't they used to call it disc rot or something?
I sat through a presentation on CDs by a chap from IBM at a conference
years ago when CDs first appeared. Two things I recall:
1) In order for them to be writable they basically had to be
chemically unstable.
2) The only thing, he said, that says the data will still be there in
ten years time was intuition. Because at the time they had not been
around long enough. I am not convinced that accelerated ageing equals
real ageing.
--
Regards
Dave Saville
this is the thing with all new mediums, and then by the time we find
out how unstable/stable they are they have been replaced. Nowadays it
seems you just get used to something and it is old fashioned.
Googling around, it seems that the general consensus is that Flash memory
lasts around 10 years. The cheapest 4GB (i.e. comparable size to a DVD) is
�3.67
http://www.amazon.co.uk/Kingston-4GB-Traveler-Flash-Drive/dp/B000TZ5WRC/
However, I have hard drives from 1992 that still work today via an IDE to
USB adaptor from Maplin. I'd suggest two hard drives would provide adequate
long term storage.
--
Vincent
I've got a hard driver from 1994 connected to a motherboard from 1999 and both
still work fine. If you buy decent kit and look after it, it'll generally
serve you well. Unless its made by Humax - premium price, amstrad reliability.
B2003
I have just copied 50 year old film of my childhood. I have some reel to
reel tapes just as old. they still work.
In the old days if a tape got damaged only the damaged bit was a problem but
now we have all this digital stuff 1 small problem and the whole thing is
scraped.
Gary
> Robert Roland wrote:
>>
>> On Wed, 2 Dec 2009 16:01:05 GMT, "Ato_Zee" <ato...@hotmail.com>
>> wrote:
>>
>>>Like if I transfer all my multi-media stuff on to a 1 or 2TB drive?
>>>
>>>Come to think of it, with a vacuum pump, and fused glass
>>>feed-throughs, I could evacuate the chamber, and keep it in the
>>>fridge.
>>
>> Don't try to run a hard drive in vacuum. The heads fly on a cushion of
>> air to avoid crashing into the platters.
>
>
> not to mention the dust you get in the average vacuum :O)
You're supposed to empty the bag before putting the hard drive in it.
Let me guess: this is off topic - or at least off-wall :-)
--
Gene E. Bloch letters0x40blochg0x2Ecom
off topic? what can be more on topic than vacuums and hard discs?
watching tv nowadays is a bit like sitting in a vacuum of
tastelessness :O)
>I have just checked my DVDs with home video on them and some are unreadable
>and some are fussy.
>
>I suggest anyone with similar should do the same. before it is too late.
>
>Gary
Further to similar info above:
Had a tour around RCHME Swindon a few months ago and went into their
'optimum storage conditions' archive (via the airlocks!).
The guy showed us their recentish DVD archive which uses the best gold
'lifetime guarantee' blanks that money can buy. Regular analysis was
suggesting that they might just last five years.
GrahamC.
> "Gene E. Bloch" wrote:
>>
>> On Thu, 03 Dec 2009 00:41:21 GMT, Paul Heslop wrote:
>>
>>> Robert Roland wrote:
>>>>
>>>> On Wed, 2 Dec 2009 16:01:05 GMT, "Ato_Zee" <ato...@hotmail.com>
>>>> wrote:
>>>>
>>>>>Like if I transfer all my multi-media stuff on to a 1 or 2TB drive?
>>>>>
>>>>>Come to think of it, with a vacuum pump, and fused glass
>>>>>feed-throughs, I could evacuate the chamber, and keep it in the
>>>>>fridge.
>>>>
>>>> Don't try to run a hard drive in vacuum. The heads fly on a cushion of
>>>> air to avoid crashing into the platters.
>>>
>>>
>>> not to mention the dust you get in the average vacuum :O)
>>
>> You're supposed to empty the bag before putting the hard drive in it.
>>
>> Let me guess: this is off topic - or at least off-wall :-)
>
> off topic? what can be more on topic than vacuums and hard discs?
> watching tv nowadays is a bit like sitting in a vacuum of
> tastelessness :O)
Mostly I just watch the news. Which makes me think you're right :-)
Must fire up my ST506 again. It was fine last year...
Andy
Ahhh - I remember those. I had a 20MB Atari one with my 14" mono monitor sat
on top of it. They made a kind of squeaky bleep noise when data was accessed
instead of the more modern clicking noise modern hard drives do. I miss that
noise...
--
Vincent
>They made a kind of squeaky bleep noise when data was accessed
>instead of the more modern clicking noise modern hard drives do.
The beeping noise came from the stepper motor that was used to move
the heads. Nowadays, voice coils are used in stead of steppers.
Funnily, on even brand new films, set at today or even in the future,
whenever a scene takes place in a computer room of some sort, the
beeping from several stepper motors can still be heard in the
background.
--
RoRo
> Funnily, on even brand new films, set at today or even in the future,
> whenever a scene takes place in a computer room of some sort, the
> beeping from several stepper motors can still be heard in the
> background.
And most of them still show mag tape (obviously studio
effects and not working) drives, plus other obsolete and
non-relevant hardware. Scopes with Lissajou figures,
continuously cycling displays, etc.
Because that is what film makers think todays hardware
looks like. War Games was a prime recent example, things
don't seem to have moved on much from then.
The sound of stepper motors is from library sound
archives, "That is the sound computers make" everybody
knows that.
> Funnily, on even brand new films, set at today or even in the future,
> whenever a scene takes place in a computer room of some sort, the
> beeping from several stepper motors can still be heard in the
> background.
At least now they do not just rows of (reel-to-reel) tape decks.
Same with camera shutters. It's always a 35mm SLR with motor drive,
regardless of the type of camera. Of course, you could argue that it
isn't quite so silly to do this with digital stills cameras because most
of them have the silliness built in. Even the ones with no mechanical
parts that need to move when a picture is taken, apart from the almost
inaudible iris mechanism, usually have a recording that plays the camera
sounds of yesteryear through a little loudspeaker. It seems about as
sensible as equipping a modern car with a loudspeaker to play the sound
of a Model T, perhaps with a few backfire effects just for fun.
Chas
Whack them on a hard drive and then back that up. Job done.
--
RCE Defiant
You gotta love all of that.
--
Vincent
There's a load of things like this... like... what does "Rewind" mean on
your DVD/CD/BluRay player? What are you winding if not tape? It should say
"Fast Backwards".
Does anyone remember the "keyboard click" noises some computers used to
make. The Atari ST was one such example. It let out a beep that was meant to
indicate you'd pressed a key. The reason? People were irked when pressing
keys on a keyboard made no sound because they were used to the noises
typewriters made. With capacitive touchscreens these days there's not even
any tactile feedback now.
--
Vincent
Camera tube failed in late 1999
Portable still works and I was using it in November to recapture tapes since
I built a new PC with 2TB of HDDs (Pair of 1TB Samsung)
> I still have Video 8 tapes from 1988 which replay with no problems.
You had a camera with a *tube*?
--
Max Demian
"Max Demian" <max_d...@bigfoot.com> wrote in message
news:7qon4r...@mid.individual.net...
My Sony betamax camera had tube. smear in low light . love it. In fact all
the first colour domestic cameras had tubes. They were made in a similar way
to colour crts with 3 colour sensors in 1 tube. Only the rich could afford 3
tube cameras . there were not and ccd as they had not been developed at the
beginning of Home portable video.
Gary
>
Pick up tube - called Trinicon, and a monochrome viewfinder tube
"Max Demian" <max_d...@bigfoot.com> wrote in message
news:7qon4r...@mid.individual.net...
Very good colour
Low light not great but showed a few CCD thingies that lux is not
everything.
My HVC4000P provided better pictures in a disco than a Vhs thingy with CCD
pickup - theirs was monochrome.
And of course my recording section was MUCH better
"Gary" <g.goo...@dottesco.net> wrote in message
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