Read errors!

[danne]

Does anyone know why i often get read errors when i use dvd decrypter to copy an already copied dvd.It often become read errors at the last vob-file.I use dvd decrypter,dvd2one and recordnow max.

[garryheather]

Sounds like a media problem - cheap (and sometimes nasty) media often craps out near the end of the disc.

[Mr Grumpy]

Like the man said, probably media errors, probably on 'inexpensive' media

Have you tried reading the DVD-R you are trying to copy from in your burner?

I've seen read errors on my Pioneer 117 DVD-ROM, but been able to read the same DVD-R OK in my DVR-104.

[danne]

do you mean reading it in my standalone ??Yes it works there but i cant copy it because read errors when reading it in my burner!!

[garryheather]

No, he means putting the disc in the recorder on your PC and seeing that can read it OK - they often handle error correction a bit better than standard DVD ROM's. If so, just copy it on to your hard drive and burn a replacement from there.

As you say that doesn't work, try ISO Buster.

[ebenton]

I have noticed while using Nero DVD Speed that it sometimes makes a difference what device you use to rip your copied DVD. I have two devices which can read DVDs, my Sony DRU-510A and my older Samsug DVD-ROM.
When I use Sony Drive Speed Selector (DSS) software to run my Sony at max speed, the drive spins at about 4500 RPM (according to Nero DVD Speed) and usually begins ripping at about 3.3X and ends up at about 8X near the 4.3 GB point. However, on cheaper media, Nero DVD Speed usually shows a drastic drop-off in transfer rate near the end, but shows a pretty nice, steady diagonal line with good media.
When I use my older Samsung DVD drive, it spins about 4000 RPM and therefore usually starts out at about 2.8X and finishes near the 7X mark. The same disk that showed a drastic drop-off in transfer rate on the Sony will show no problems at all on the Samsung at the same point on the disk.
I think (I'm not 100% sure.) that standalone DVDs read even slower than this, so that is probably why the disks might play OK on standalones, but not read well on PCs.
So it does make a difference how fast you are reading your disk. If you have a device that will read your disk a little slower, try using that. It might make a difference.
If anybody wants to correct me on RPMs vs transfer rate for standalones vs PC drives, etc. etc. please feel free. I'm just making assumptions based on non-scientific evidence.

[garryheather]

Most modern drives should already slow themselves down automiatically if they have trouble reading a disc, however utilities that force a drive to go slower over-ride that part of the error correction mechanism and can make a difference if the drive defaults to a higher speed than the utility allows.

By giving the reader more time to get the data off the disc before the next sector comes along, you may indeed find it easier to get the data off of those pesky discs.