I recently bought a 25pk of dvd-r's the brand is called "Best DVD". It says on the box that they are 1-8x compatible. However using DvdInfo it says:
Media code/Manufacturer ID Plasmon1A
Format Type UDF 1.02
Available Write Descriptor CLV 4.0x 5540KBps
Write Strategy Speed 4.0x 5540KBps
Does this mean that the disc is actually 4x, because in nero I cannot write to it at any other speed than 4x. Is this the certified speed?
I noticed when I read it, it starts at 1x then moves to about 2-3x by the end of reading the disc. When I started copying a 500mb file off one dvd windows was saying it was going to take 8 minutes.
However I backed up one of my dvd's and DvdInfo was testing the speed starting at 4x but the graph was really spikey. And suddenly dropped to 2x near the end.
When I tested it in Nero CD-DVD Speed it just went at 1x-3x.
I restarted my computer and then in Nero CD-DVD Speed and this is the curve it gave:
I was wondering why would the discs speed be suddenly reduced at the end of the curve? Another test of the same disc had the drop in the curve in a different place.
Then I tested it again a few minutes later and got this one:
Then I tested it in DVDInfo and got this:
Is there any reason for the loss of speed of reading the DVD?
This is one of the spikey results:
I have an LG GSA-4163B with the A100 Firmware.
Any help is greatly appreciated.