HydrogenAudio

CD-R and Audio Hardware => CD Hardware/Software => Topic started by: AliceWonder on 2014-03-18 18:32:06

Title: offset and ToC
Post by: AliceWonder on 2014-03-18 18:32:06
OS is linux, I rip with cdparanoia.

using the utility cd-info, my drive is a BDDVDRW UH12NS29

According to http://www.accuraterip.com/driveoffsets.htm (http://www.accuraterip.com/driveoffsets.htm) that gives me an offset of +667

Am I correct that this means I should rip with a -O 667 switch to cdparania, despite SCSI errors thrown at the end?

second - with a disc in the drive, cd-info gives me the following:

Code: [Select]
CD-ROM Track List (1 - 8)
  #: MSF       LSN    Type   Green? Copy? Channels Premphasis?
  1: 00:02:00  000000 audio  false  no    2        no
  2: 04:28:17  019967 audio  false  no    2        no
  3: 07:56:42  035592 audio  false  no    2        no
  4: 11:01:17  049442 audio  false  no    2        no
  5: 19:41:02  088427 audio  false  no    2        no
  6: 23:03:17  103592 audio  false  no    2        no
  7: 26:08:20  117470 audio  false  no    2        no
  8: 31:08:57  140007 audio  false  no    2        no
170: 37:55:15  170490 leadout (382 MB raw, 382 MB formatted)


However if I rip to a single file and use those times for a cue sheet, it's 2 seconds off.
Is there a reason why it does that?

Should I just expect to always need to subtract the MSF value of the first audio track from all the tracks to get valid starting point, or am I not understanding something?

Thanks
Title: offset and ToC
Post by: AliceWonder on 2014-03-18 21:44:06
Well with several CDs now when I subtract the first MM:SS:NN from all the start positions, it is correct cue points - so I guess that is answered.