1) Checked one of the referenced papers  to confirm my memory - see 
section below - label on DVD, unlike CD is* not next to data layer*.

2) Are these 3 1/2 DVD or mini dvd's from camera.

3) Any chance the disks weren't closed off? I bought some Nero software 
just to do this to a pre-recorded  camera disk.

4) Go to Sally Anne and get a bunch of old DVD players, and computer DVD 
drives . They will be cheap and you only need one to work - Sort of like 
VHS VCR's compatible with F1 audio encoders.

CDs and DVDs differ in how these layers are physically organized. On 
CDs, the reflective layer is on the top side of the disc, whereas the 
reflective layer on DVDs is in the center of the disc, surrounded by the 
polycarbonate substrate on either side. This layout makes DVDs are more 
resistant to physical data and tracking errors, while at the same time 
making them more sensitive to errors caused by surface contamination. 
This sensitivity is ameliorated through the use of more sophisticated 
error correction methods. Advancements in error correction technology 
allow DVD error correction to fix far more problematic bits, though this 
is offset by the smaller and more densely packed pits in the DVD data 
layer. Thus, DVDs are physically
3 The report, published in 2006, is titled Risks Associated with the Use 
of Recordable CDs and DVDs as Reliable Storage Media in Archival 
Collections - Strategies and Alternatives

from paper

On 3/3/2019 3:27 AM, Shai Drori wrote:
> Has anyone had success rescuing video content from a recordable dvd with a
> label on it? A client brought in a series of dvds of interviews done about
> 15 years ago on dvd. Apparently the labels have corrupted the data somehow
> and none of my players or computers can rip or play a complete interview.
> Some will play the first few minutes, some even half an hour but errors do
> set in. Any ideas or tricks hardware software options we can explore?
> Content is irreplaceable and most important.

John Gledhill
905 881 2733
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