作者SKYSTAR

小水大....

您誤會我的意思了....
我的意思是指先不考慮保存環境的因素....是因為我會將片子放入防潮箱中保存.....所以保存環境應該是還好.....
其實我最主要的意思是.....
當所有基本的條件都一樣時(不管是不是放入防潮箱,用好的片子...等等).....就只比較所謂的....燒錄的速度快慢!
所以在燒錄速度的快慢不同的情形下....所燒出來的片子....其保存性會一樣嗎? 不是指測試品質喲!

對了...可否再請教一個問題....
如果燒錄以CLV...CAV....Z-CLV....P-CAV來燒錄時....那一個比較好呢?
我記得沒錯的話....片子要用什麼模式來燒錄....是取決於燒錄機的設計....
只是用什麼模式...也是會取決於燒錄時要用什麼速度來燒....
比如說1X~8X的片子....選用4X燒....此時便是以CLV燒錄....而改用8X燒時...則是用Z-CLV...
雖然說每台機子的性質不同...但應該都是有類似的模式....就是在沒有超過某一速度是用一種模式...而如果超過某一速度時則是用另一個模式....!
以上說的...不知道有沒有錯....

最主要的是想請教一下......(不考慮燒錄所花的時間)
燒錄片子時.....是不是用CLV的模式是最好的呢? (從網路中得知的)
如果大家的回答都是CLV的最好....
那麼看起來....可能就是4X~6X燒最好了.....
為什麼是4X或6X呢?
因為放入藍精靈DVD-R 1X~8X的片子....(使用NERO CD-DVD SPEED模擬燒錄)
NEC2500A可以燒到最高速8X....所以測得的是...4X-6X-8X Z-CLV
NEC7170A可以燒到最高速12X...所以測得的是...6X-8X-10X-12X Z-CLV
由此看來....放入同樣的片子...如果想要用CLV來燒錄時...
NEC2500A要用4倍燒錄....而NEC7170A要用6X來燒錄....
以上不知寫的對不對呢?

只是有一個問題....我用NEC7170A測試時...有先到參數選項中設定DVD最高速度為9X...
為什麼測試時....卻是4X起速...然後到了尾速還是4X呢? (就是4X從頭到尾)
不是應該為4X-6X-8X嗎?
(註: 前面寫的7170A可以測到6X-8X-10X-12X ...是因為參數選項中設定DVD最高速度為16X)

Thanks!

作者ErikDeppe

Thanks for all the comments and feedback!

I'll try to answer some questions now.

Advanced Disc Quality Test (BenQ):
Jitter: unfortunately an incorrect formula was used to calculate jitter so please ignore this value for now (the jitter from the standard Disc Quality test is correct).
Classes:
Class 1: extremely good (you probably won't see many of those )
Class 2: very good
Class 3: good
Class 4: bad
Class 5: very bad

CD scanning: all values are reported per second, the highest values are shown
DVD scanning: all values are reported per 8 ECC blocks
1 PIE = number of rows with 1 error
2 PIE = number of rows with 2 errors
...
5 PIE = number of rows with 5 errors
PIF = number of rows with more than 5 errors
PIE = number of rows with 1 or more errors = 1 PIE+2 PIE+3 PIE+4 PIE+5 PIE+PIF

Disc Quality test
Jitter with LiteOn drives
The scanning speed seems to affect the way jitter is reported. At the moment jitter can only be reported at 2x and 4x but I should be able to make it work for all speed settings.
C2 error reporting
Most drives report BLER (C1) and E32 (C2) errors. It's true that it would be more interesting to show E22 errors as well but not many drives can report this. If E22 would be combined with E32 then it would be difficult to know if a disc is really bad.