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Posted by JimK on 11/27/05 13:51
On 27 Nov 2005 01:02:05 -0800, dvdpleasures@yahoo.com wrote:
>What is the cause of sporadic pixelated DVD backups?
>
>I don't see any errors whatsoever using DVD Shrink and Nero to rip and
>burn DVD backups yet roughly one out of five or ten archival DVDs has
>random pixelation somewhere in the playback results using TDK DVD-R
>1-16x 4.7 GB DVD media and a Pioneer DVR-S706 single layer DVD R/RW
>CD-R/RW writer.
>
>Why the random sproadic pixelations?
>
>More specifically:
>How did the random blocky pixelations get past the Nero verification
>stage?
>Where do these random pixelations come from (they don't seem to be on
>the original)?
>Is there a software scanner which will find them (other than playing
>the DVD to completion)?
>Is random pixelations a hardware or software or meda problem anyway?
>
>So may questions, so little mind,
>Karin
To many errors on burned media will cause longer read times (for that
sector) causing pixelation.
If your DVD Rom supports C1/C2 or PI/PO testing, Nero CD-DVD Speed
C1/C2 or PI/PO information can be used to check the disc quality,
which gives much more detailed information than the standard
read\verification test.
http://www.cdspeed2000.com/
Disc Quality Test score 93 (I found above 45 works)
http://img395.imageshack.us/my.php?image=nerocdspeed11yz.jpg
http://www.digitalfaq.com/media/dvdmedia.htm
Nero CD-DVD Speed 'scan test' will read each sector, you can watch the
read of each sector (rate) displayed on graph, that it stays constant
through out the DVD, any slowdown could be sign of hard to read
sectors because of errors.
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