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Posted by Bill Vermillion on 12/02/07 14:26
In article <47458160$0$242$e4fe514c@news.xs4all.nl>, Linea Recta
<mccm.vos@abc.invalid> wrote:
>"Roberto Divia`" <Roberto.Divia@gmail.com> schreef in bericht
>news:cba749e3-f343-4db3-a3b5-0c41638655c5@n20g2000hsh.googlegroup
>s.com...
>> On Nov 21, 8:54 pm, "Linea Recta" <mccm....@abc.invalid> wrote:
>>
>> > I have been using double layer DVD+R media and they tested
>> > all OK on PC player, and on the stand alone player and the
>> > DVD recorder.
>> >
>> > Now I went out of media, so I bought more of the SAME
>> > brand, at the SAME shop, for the SAME price (Nashua DVD+R
>> > double layer) and all at once the written media will not
>> > play anywhere, exept in the burner where it was >made (and
>> > verified!)
>> There are two separate issues with DVD manufacturing:
>> 1) bad quality: different batches from the same manufacturer give
>> different results (unreliable manufacturing process)
I had >ONE< instance where DVDs from the same package had different
ID codes.
>> 2) different origin: the same manufacturer orders batches from
>> different sources, some reliable and some not
>Both Ricoh (see below), but they did change properties of the
>DVD, while the labels in the slim box are IDENTICAL. This is the
>only thing a potential buyer can rely on, of course I can't take
>'DVD identifier' with me in the shop...
RICOH is usually pretty good - but my impression was they had
gotten out of the manufacturing side for blanks. I've had Sony
DVDs made by Ricoh.
>> You state a difference between the old (reliable) and the new
>> (unreliable) medias. This for me points out to a different origin of
>> the batches.
>> Unfortunately the only reliable method to identify the reliable
>> DVD manufacturers is by looking at tiny details, some visible
>> on the media itself and some that must be *read* from the
>> media. Tools exist to perform electronic identification of the
>> manufaturer and of the batch.
>Yes, this is very interesting afterwards, but how can it prevent
>one from buying beforehand?
Settle on one brand. I have used Ritek [from Supermediastore.com]
for year with no problems. Recently I've moved exclusively to
the Tayo-Yuden brand [premium disk not economy] from the same
vendor. They cost a few cents more but the consensus is they are
the best on the market - unless you want to go to blanks from
MAM-A which are EXPENSIVE but desingned for very long life -
archival quality.
>> There are several sites where users share their
>> experiences, tools and methods. The one I use regularly is
>> http://www.videohelp.com/
>First of all, the good news is as follows:
>because I couldn't reach the vendor (busy), I decided to have another go
>against all odds, but this time using another speed. According to Nero I
>could use speeds up to 8, so I decided to go somewhere in between. I used 6
>speed this time, burned and verified the DVD. This time... it seems I can
>play the DVD on all DVD players! Praise the lord.
I have always recorded at lower than maximum speed and found it to
be worthwhile. I also burn ISO images made by other programs
with DVD-Decryptor - as I've found it quite reliable and I >ALWAYS<
run the 'verify' after the write. It takes more time, but for
those 1 out of 200 or so burns, knowing that the disk failed is
much better than finding it out later when I can't make another
copy.
>Gosh... at least I'm happy to have found a work around and I hope
>it's only going to cost me one coaster. Of coarse I'm going to
>stay with 6 speed for these DVD's, but what will they have been
>changing behind my back next time I buy DL DVD's??
>And I emphasize that the Nashua pack (10 pieces) was IDENTICAL
>and still states 2.4X!! So one should expect all speeds to
>yielding working copies!!
Try one of the brands I've mentioned above.
>Below I have added the DVD Identifier report for the old pack
>(first) and the new one (second).
So the disks ARE different.
I've deleted all except the pertinent pieces - wjv
>----------------------------------------------------------------------------
>Unique Disc Identifier : [DVD+R-DL:RICOHJPN-D00-001]
>----------------------------------------------------------------------------
>Disc & Book Type : [DVD+R DL] - [DVD-ROM]
>Manufacturer Name : [Ricoh Co. Ltd.]
>Manufacturer ID : [RICOHJPN]
>Media Type ID : [D00]
>Product Revision : [001]
>Blank Disc Capacity : [Not Supported By Method 2]
>Recording Speeds : [2.4x]
> [Method 2 Might Not Always Detect All Speeds]
>----------------------------------------------------------------------------
>
>----------------------------------------------------------------------------
>Unique Disc Identifier : [DVD+R-DL:RICOHJPN-D01-067]
>----------------------------------------------------------------------------
That line is different.
>Disc & Book Type : [DVD+R DL] - [DVD+R DL]
>Manufacturer Name : [Ricoh Co. Ltd.]
>Manufacturer ID : [RICOHJPN]
>Media Type ID : [D01]
>Product Revision : [067]
The two above lines are also different.
>Blank Disc Capacity : [Not Supported By Method 2]
>Recording Speeds : [2.4x , 3.3x-8x]
This line differs also.
So the brand name is the same, but the disks certainly are not.
I used to use TDK when they made their own, but switched the
the Ritek and Yuden awhile back and have never regretted it.
Bill
--
Bill Vermillion - bv @ wjv . com
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