[Debburn-devel] Wodim reduces writing speed for Video DVDs to 4x for no reason

Heiko Baums lists at baums-on-web.de
Sat Sep 10 03:19:21 UTC 2011 

I have a problem with wodim. When burning a Video DVD with K3b as the
frontend and wodim as the backend, wodim reduces the speed to 4x.

In fact my DVD writer is able to write my DVDs with 16x. As far as I
know even with 20x.

My writer is a Pioneer DVR-216D.
The DVDs I'm usually using are Verbatim DVD-R 4.7GB 16X AZO.

It would be nice if this could be fixed.

This is the truncated log:

Devices
-----------------------
PIONEER DVD-RW  DVR-216D 1.08 (/dev/sr0, CD-R, CD-RW, CD-ROM, DVD-ROM,
DVD-R, DVD-RW, DVD-R doppelschichtig, DVD+R, DVD+RW, DVD+R
doppelschichtig) [DVD-ROM, DVD-R sequenziell, Zweischichtige DVD-R
sequenziell, Zweischicht-DVD-R-Sprung, DVD-RW Eingeschränktes
Überbrennen, DVD-RW sequenziell, DVD+RW, DVD+R, Zweischichtige DVD+R,
CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16,
RAW/R96P, RAW/R96R, Eingeschränktes Überschreiben, Sprung zwischen
DVD-Schichten] [%7]

K3b::IsoImager
-----------------------
mkisofs print size result: 1926790 (3946065920 bytes)

System
-----------------------
K3b Version: 2.0.2
KDE Version: 4.7.00 (4.7.0)
QT Version:  4.7.4
Kernel:      3.0-fbcondecor

Used versions
-----------------------
mkisofs: 1.1.11
cdrecord: 1.1.11

cdrecord
-----------------------
/usr/bin/wodim: Operation not permitted. Warning: Cannot raise
RLIMIT_MEMLOCK limits. scsidev: '/dev/sr0'
devname: '/dev/sr0'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
Wodim version: 1.1.11
SCSI buffer size: 64512
Beginning DMA speed test. Set CDR_NODMATEST environment variable if
device communication breaks or freezes immediately after that.
TOC Type: 1 = CD-ROM
Driveropts: 'burnfree'
Device type    : Removable CD-ROM
Version        : 5
Response Format: 2
Capabilities   : 
Vendor_info    : 'PIONEER '
Identification : 'DVD-RW  DVR-216D'
Revision       : '1.08'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Current: 0x0011 (DVD-R sequential recording)
Profile: 0x002B (DVD+R/DL) 
Profile: 0x001B (DVD+R) 
Profile: 0x001A (DVD+RW) 
Profile: 0x0016 (DVD-R/DL layer jump recording) 
Profile: 0x0015 (DVD-R/DL sequential recording) 
Profile: 0x0014 (DVD-RW sequential recording) 
Profile: 0x0013 (DVD-RW restricted overwrite) 
Profile: 0x0011 (DVD-R sequential recording) (current)
Profile: 0x0010 (DVD-ROM) 
Profile: 0x000A (CD-RW) 
Profile: 0x0009 (CD-R) 
Profile: 0x0008 (CD-ROM) 
Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).
Driver flags   : SWABAUDIO BURNFREE 
Supported modes: PACKET SAO
Drive buf size : 1605632 = 1568 KB
FIFO size      : 4194304 = 4096 KB
Speed set to 5540 KB/s
Track 01: data  3763 MB        
Total size:     4321 MB (428:10.53) = 1926790 sectors
Lout start:     4322 MB (428:12/40) = 1926790 sectors
Current Secsize: 2048
HINT: use dvd+rw-mediainfo from dvd+rw-tools for information extraction.
Blocks total: 2298496 Blocks current: 2298496 Blocks remaining: 371706
Starting to write CD/DVD at speed   4.0 in real SAO mode for single
session. Last chance to quit, starting real write in    2 seconds.
   1 seconds.
   0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
Performing OPC...
Sending CUE sheet...
Starting new track at sector: 0
Track 01:    0 of 3763 MB written.
Track 01:    1 of 3763 MB written (fifo  84%) [buf  67%]  24.7x.
Track 01:    2 of 3763 MB written (fifo 100%) [buf  99%]   0.0x.
Track 01:    3 of 3763 MB written (fifo 100%) [buf  99%]   4.3x.
Track 01:    4 of 3763 MB written (fifo 100%) [buf  99%]   1.8x.
Track 01:    5 of 3763 MB written (fifo  98%) [buf  99%]   4.2x.
Track 01:    6 of 3763 MB written (fifo 100%) [buf  99%]   4.1x.
Track 01:    7 of 3763 MB written (fifo 100%) [buf  99%]   4.2x.
Track 01:    8 of 3763 MB written (fifo 100%) [buf  99%]   4.1x.
Track 01:    9 of 3763 MB written (fifo 100%) [buf  99%]   4.2x.
Track 01:   10 of 3763 MB written (fifo 100%) [buf  99%]   4.1x.
...
Track 01: 3761 of 3763 MB written (fifo 100%) [buf  99%]   4.1x.
Track 01: 3762 of 3763 MB written (fifo 100%) [buf  99%]   4.2x.
Track 01: 3763 of 3763 MB written (fifo 100%) [buf  99%]   4.1x.
Track 01: Total bytes read/written: 3946065920/3946065920 (1926790
sectors). Writing  time:  753.753s
Average write speed   3.9x.
Min drive buffer fill was 97%
Fixating...
Fixating time:   33.224s
/usr/bin/wodim: fifo had 62155 puts and 62155 gets.
/usr/bin/wodim: fifo was 0 times empty and 34617 times full, min fill
was 53%.

cdrecord command:
-----------------------
/usr/bin/wodim -v gracetime=2 dev=/dev/sr0 speed=20 -sao
driveropts=burnfree -data -tsize=1926790s -

mkisofs
-----------------------
1926790
Warning: -follow-links does not always work correctly; be careful.
I: -input-charset not specified, using utf-8 (detected in locale
settings) 0.03% done, estimate finish Sat Sep 10 06:45:38 2011
  0.05% done, estimate finish Sat Sep 10 05:43:22 2011
  0.08% done, estimate finish Sat Sep 10 05:22:15 2011
  0.10% done, estimate finish Sat Sep 10 05:11:22 2011
  0.13% done, estimate finish Sat Sep 10 08:42:39 2011
  0.16% done, estimate finish Sat Sep 10 11:36:14 2011
  0.18% done, estimate finish Sat Sep 10 10:46:22 2011
  0.21% done, estimate finish Sat Sep 10 09:59:33 2011
  0.23% done, estimate finish Sat Sep 10 09:24:20 2011
  0.26% done, estimate finish Sat Sep 10 09:02:31 2011
...
 99.93% done, estimate finish Sat Sep 10 04:52:05 2011
 99.96% done, estimate finish Sat Sep 10 04:52:05 2011
 99.99% done, estimate finish Sat Sep 10 04:52:05 2011
Total translation table size: 0
Total rockridge attributes bytes: 0
Total directory bytes: 4248
Path table size(bytes): 42
Max brk space used 0
1926790 extents written (3763 MB)

mkisofs calculate size command:
-----------------------
/usr/bin/genisoimage -gui -graft-points -print-size -quiet -volid
3D-Spielfilme -volset  -appid  -publisher  -preparer  -sysid
-volset-size 1 -volset-seqno 1 -sort /tmp/kde-user/k3bG21541.tmp
-no-cache-inodes -udf -iso-level 1
-path-list /tmp/kde-user/k3bz21541.tmp -dvd-video
-f /tmp/kde-user/k3bVideoDvd0

mkisofs command:
-----------------------
/usr/bin/genisoimage -gui -graft-points -volid 3D-Spielfilme -volset
-appid  -publisher  -preparer  -sysid  -volset-size 1 -volset-seqno 1
-sort /tmp/kde-user/k3bx21541.tmp -no-cache-inodes -udf -iso-level 1
-path-list /tmp/kde-user/k3be21541.tmp -dvd-video
-f /tmp/kde-user/k3bVideoDvd0

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