====== cdrecord ======

  * [[Optical Drive Speeds]]

I'm trying to figure out specifics on drive read speeds.

<code>
cdrecord -prcap
</code>

This is the first program I've seen mention anything about BD-ROM features.

<code>
Cdrecord-ProDVD-ProBD-Clone 3.02a07 (x86_64-pc-linux-gnu) Copyright (C) 1995-2016 Joerg Schilling
Using libscg version 'schily-0.9'.
Device type    : Removable CD-ROM
Version        : 5
Response Format: 2
Capabilities   :
Vendor_info    : 'ATAPI   '
Identifikation : 'iHOS104         '
Revision       : 'WL0D'
Device seems to be: Generic mmc2 DVD-ROM.

Drive capabilities, per MMC-3 page 2A:

  Does read CD-R media
  Does not write CD-R media
  Does read CD-RW media
  Does not write CD-RW media
  Does read DVD-ROM media
  Does read DVD-R media
  Does not write DVD-R media
  Does not read DVD-RAM media
  Does not write DVD-RAM media
  Does not support test writing

  Does read Mode 2 Form 1 blocks
  Does read Mode 2 Form 2 blocks
  Does read digital audio blocks
  Does restart non-streamed digital audio reads accurately
  Does not support Buffer-Underrun-Free recording
  Does read multi-session CDs
  Does read fixed-packet CD media using Method 2
  Does not read CD bar code
  Does read R-W subcode information
  Does not return R-W subcode de-interleaved and error-corrected
  Does read raw P-W subcode data from lead in
  Does return CD media catalog number
  Does return CD ISRC information
  Does support C2 error pointers
  Does not deliver composite A/V data

  Does play audio CDs
  Number of volume control levels: 255
  Does support individual volume control setting for each channel
  Does support independent mute setting for each channel
  Does not support digital output on port 1
  Does support digital output on port 2
  Does not send digital data LSB-first
  Does not set LRCK high for left-channel data
  Does not have valid data on falling edge of clock
  Length of data in BCLKs: 16

  Loading mechanism type: tray
  Does support ejection of CD via START/STOP command
  Does not lock media on power up via prevent jumper
  Does allow media to be locked in the drive via PREVENT/ALLOW command
  Is not currently in a media-locked state
  Does not support changing side of disk
  Does not have load-empty-slot-in-changer feature
  Does not support Individual Disk Present feature

  Maximum read  speed:  5645 kB/s (CD  32x, DVD  4x, BD  1x)
  Current read  speed:  5645 kB/s (CD  32x, DVD  4x, BD  1x)
  Maximum write speed:     0 kB/s (CD   0x, DVD  0x, BD  0x)
  Current write speed:     0 kB/s (CD   0x, DVD  0x, BD  0x)
  Rotational control selected: CLV/PCAV
  Buffer size in KB: 2048
  Copy management revision supported: 1
  Number of supported write speeds: 0

Current performance according to MMC get performance:

Maximum performance according to MMC get performance:

Supported profiles according to MMC-4 feature list:
Current: none
Profile: BD-ROM
Profile: DVD-ROM
Profile: CD-ROM

Supported features according to MMC-4 feature list:
Feature: 'Profile List' (current) (persistent)
Feature: 'Core' (current) (persistent)
Feature: 'Morphing' (current) (persistent)
Feature: 'Removable Medium'
Feature: 'Random Readable'
Feature: 'Multi Read'  (persistent)
Feature: 'CD Read'
Feature: 'DVD Read'
Feature: 'Defect Management'
Feature: 'DVD+RW'
Feature: 'DVD+R'
Feature: 'DVD+R/DL Read'
Feature: 'BD Read'
Feature: 'Power Management' (current) (persistent)
Feature: 'CD Audio analog play'
Feature: 'Microcode Upgrade' (current) (persistent)
Feature: 'Time-out' (current) (persistent)
Feature: 'DVD-CSS'
Feature: 'Real Time Streaming' (current) (persistent)
Feature: 'Logical Unit Serial Number' (current) (persistent)    Serial: '3775504067 206017500441 '
Feature: 'DVD CPRM'
Feature: 'Microcode Information' (current) (persistent)
Feature: 'AACS' (current)
</code>