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Re: OT - dvd recording differences



Rodney D. Myers wrote:
> 
> for the "+" media;
> 
> dvd+rw-mediainfo /dev/hda
> INQUIRY:                [BENQ    ][DVD DD DW1620   ][B7H9]
> GET [CURRENT] CONFIGURATION:
>  Mounted Media:         1Bh, DVD+R
>  Current Write Speed:   16.0x1385=22160KB/s
>  Write Speed #0:        16.0x1385=22160KB/s
>  Write Speed #1:        12.0x1385=16620KB/s
>  Write Speed #2:        8.0x1385=11080KB/s
>  Write Speed #3:        4.0x1385=5540KB/s
>  Write Speed #4:        2.4x1385=3324KB/s
> GET [CURRENT] PERFORMANCE:
>  Write Performance:     16.0x1385=22160KB/s@[0 -> 2295103]
>  Speed Descriptor#0:    00/2295103 R@3.5x1385=4787KB/s W@16.0x1385=22160KB/s
>  Speed Descriptor#1:    00/2295103 R@3.5x1385=4787KB/s W@12.0x1385=16620KB/s
>  Speed Descriptor#2:    00/2295103 R@3.5x1385=4787KB/s W@8.0x1385=11080KB/s
>  Speed Descriptor#3:    00/2295103 R@3.5x1385=4787KB/s W@4.0x1385=5540KB/s
>  Speed Descriptor#4:    00/2295103 R@3.5x1385=4787KB/s W@2.4x1385=3324KB/s
> READ DISC INFORMATION:
>  Disc status:           blank
>  Number of Sessions:    1
>  State of Last Session: empty
>  Number of Tracks:      1
> READ TRACK INFORMATION[#1]:
>  Track State:           blank
>  Track Start Address:   0*2KB
>  Next Writable Address: 0*2KB
>  Free Blocks:           2295104*2KB
>  Track Size:            2295104*2KB
>  ROM Compatibility LBA: 265696
> READ CAPACITY:          0*2048=0
> 
> 
> for the "-" media;
> 
> dvd+rw-mediainfo /dev/hda
> INQUIRY:                [BENQ    ][DVD DD DW1620   ][B7H9]
> GET [CURRENT] CONFIGURATION:
>  Mounted Media:         11h, DVD-R Sequential
>  Media ID:              CMC MAG. AM3
>  Current Write Speed:   4.0x1385=5540KB/s
>  Write Speed #0:        4.0x1385=5540KB/s
> GET [CURRENT] PERFORMANCE:
>  Write Performance:     4.0x1385=5540KB/s@[0 -> 2297887]
>  Speed Descriptor#0:    00/2297887 R@3.5x1385=4787KB/s W@4.0x1385=5540KB/s
> READ DVD STRUCTURE[#10h]:
>  Media Book Type:       25h, DVD-R book [revision 5]
>  Legacy lead-out at:    2297887*2KB=4706072576
> READ DVD STRUCTURE[#0h]:
>  Media Book Type:       25h, DVD-R book [revision 5]
>  Last border-out at:    0*2KB=0
> READ DISC INFORMATION:
>  Disc status:           blank
>  Number of Sessions:    1
>  State of Last Session: empty
>  Number of Tracks:      1
> READ TRACK INFORMATION[#1]:
>  Track State:           invisible incremental
>  Track Start Address:   0*2KB
>  Next Writable Address: 0*2KB
>  Free Blocks:           2297888*2KB
>  Track Size:            2297888*2KB
> READ CAPACITY:          0*2048=0
> 

The benq document about supported media for 1620 says that CMC MAG. AM3
is supported and can be written at a max speed of 16x. Your drive tells
4.0x max. Something seems to be amiss here!!



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