Reading compatibility, next
Here are the results obtained:
As shown, the possibility to indicate a "fake" book type helps with the DL media compatibility. Indeed, with a regular DVD+R book type, our DVD was compatible with only by 42% of the DVD-Rom players and 37% of the DVD+RW or –RW burner. The oldest DVD-Rom has some trouble with the DVD, and mostly the excellent old Toshiba which cant read the DVD+R DL, whatever the book type is. The Pioneer players give great results but not the burner. Amongst them only the DVR106S is able to read a DVD+R DL burned with a modified book type.
The compatibility with the DL media is slightly superior with DVD-Rom players than with burners, with 42% for DVD players and 37% for burners. However the burners have a high level of compatibility with a modified book type media. The compatibility is raised up to 64% and 62% for the DVD players.
We also notice the curiosity of the NEC2500 burner. Even flashed in 2510A (double layer burner), this burner can´t read the DVD+R recorded by the Liteon SHOW-832S. Fortunately, the 2510A flashed version is able to re-read its own DL media. In the other way around, the SOHW-832S is able to read the media of the NEC2510. And as we didn´t have an original and official NEC2510A, we were not able to check if the incompatibility came from the 2500A base components.
The assessment of DVD player compatibility is relatively good as 60% are compatible with non-modified DL media, this figure rise up to 90% with a modified book type media. Only the Panasonic SA-HT520 has rejected the media in both situations when cheapest DVD players accepted them. Of course this is a small test panel and the result isn´t representative and exhaustive.
Before starting frenetically to burn DVD+R DL (and with such expensive prices only a few will), you have to check if the DVD re-reading hardware is compatible.
