detail information
| Posted by | Jan S. |
| Posted on | 25/03/06 23:06 |
DVD+R/-R Double Layer writing speed and compatibility:
The NEC ND-4551A supports the DVD+R DL/-R DL standard for writing Double Layer/Dual Layer discs with a size around 8.5 GB at a writing speed of 8x/6x.
Testing
procedure:
We created an ISO Image from
a pre-authored DVD-Video compliant file set, with a total on-disc size of 8103
MB. We then wrote this image file using Nero Burning ROM 6. Below are the
results:
Verbatim media
Nero completed the burn successfully with the Verbatim media in 18 minutes and 59 seconds.
Let us take a look at the K-Probe result:
|
Brand: |
Verbatim
- Thanks to Verbatim (D) |
|
Manufacturer: |
Mitsubishi Kagaku Media |
|
Code: |
MKM 001 |
|
Disc Type: |
DVD+R DL |
|
Capacity: |
8103MB |
|
Certified Speed: |
2.4x |
|
Write Speed: |
8x |
|
Write Time: |
18m:59s |
|
PI-8 errors Average/Sec: |
13.50 |
|
PI-1 failures (PIF) Avg/Sec: |
0.05 |
We can clearly see that the PI-errors are higher on the first layer then the second layer.
Let us compare the NEC ND-4551A results with some other DL capable drives.
|
Drive |
Size |
Writing
|
Writing |
Book |
KProbe |
Kprobe |
|
Samsung |
8103MB |
6x |
23m:30s |
DVD+DL |
11.58 |
0.03*1 |
|
Philips |
8103MB |
2.4x |
45m:52s |
DVD-ROM |
2.28 |
0.04* |
|
NU |
8103MB |
4x |
37m:00s |
DVD-ROM |
1.89 |
0.02*1 |
|
NEC |
8103MB |
2.4x |
44m:08s |
DVD-ROM |
37.44 |
0.02*3 |
|
BenQ |
8152Mb |
8x |
15m:36s |
DVD-ROM |
3.26 |
0.02 |
|
Pioneer |
|
2.4x |
45m:13s |
DVD-ROM |
5.51 |
0.10*3 |
|
LG |
8103MB |
2.4x |
44m:48s |
DVD-ROM |
14.15 |
0.02*3 |
|
Philips |
8103MB |
8x (4x) |
28m:26s |
DVD-ROM |
31.41 |
0.03*3 |
|
NEC |
8103MB |
8x |
18m:41s |
DVD-ROM |
64.47 |
0.04*3 |
|
NEC |
8103MB |
8x |
18m:59s |
DVD-ROM |
13.50 |
0.05*1 |
*1 Verbatim DVD+R DL
*2
Traxdata DVD+R DL
*3 Ricoh DVD+R DL
*4 DataWrite DVD+R DL
DVD-R DL:
As mentioned in the beginning of this page, the NEC ND-4551A supports the DVD-R DL standard at 6x. Again, we used Nero Burning Rom 6 to write the DVD Image:
The NEC ND-4551A used 21 minutes and 9 seconds to write the Verbatim DVD-R DL 4x media at 6x.
|
Brand: |
Verbatim
- Thanks to Verbatim |
|
Manufacturer: |
Mitsubishi Kagaku Media |
|
Code: |
MKM 01RD30 |
|
Disc Type: |
DVD-R DL |
|
Capacity: |
8103MB |
|
Certified Speed: |
4x |
|
Write Speed: |
6x |
|
Write Time: |
21m:09s |
|
PI-8 errors Average/Sec: |
30.99 |
|
PI-1 failures (PIF) Avg/Sec: |
0.13 |
Even though the KProbe result showed high PI/PIF values, it did not affect the read back curve.
Standalone DVD-Player compatibility:
We only have 4 standalone DVD-Players and 1 standalone DVD+R/W recorder available to test the DVD+R DL media (BookType: DVD-ROM) and the DVD-R DL media (BookType: DVD-R) with:
- Aiwa DVD Player XD-DV370
- Medion DVD/DivX Player MD7457
- Medion DVD/DivX/NeroDigital Player MD80796
- Red Star DVD-Player 230G
- Mustek R100A DVD+R/W Recorder
Compatibility results:
|
Drive |
Verbatim |
Verbatim |
Comments |
|
Aiwa |
OK |
OK |
No problems |
|
Medion |
OK |
FAILED |
Reports disc as DVD-Video, but not playable |
|
Medion |
OK |
FAILED |
Reports disc as DVD-Video, but not playable |
|
Mustek |
OK |
FAILED |
Reports ?NO DISC? |
|
Red
Star |
OK |
FAILED |
Reports disc as DVD-Video, but not playable |
All DVD Standalone devices played the NEC ND-4551A burned DVD+R DL media. But only one DVD Standalone devices would play the DVD-R DL media.
We would like to mention, that the compatibility issue with standalone DVD Players/Recorders and the DVD-R DL media format is caused by incompatibilities with the standalone devices used in this review, and not the NEC ND-4551A or media format used.
Summary: The writing quality could need some improvements.
DVD-R/RW Writing performance
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