Batch RAW-Conversion to jpg leads to unusable jpg / tiff when using all kernels

[Maik Qualmann]

The problem will now be fixed in digiKam-5.8.0. We have enough time for testing 
to see if the thread support in libraw has other negative effects.

Maik

Am Montag, 28. August 2017, 11:07:24 CEST schrieb fotografie:
> Hello,
> 
> I have a problem which exists from digikam 5.20 to digikam 5.70.
> 
> I really do batch conversion of NEF-rawfiles very often. The cameras are
> a D300, a D500, a D5300 and a D5500. The problem exists with every camera.
> 
> My batch processing has the following workflow:
> 
> - lens correction (according to the lens I used, Nikon 24-120, Tamron
> 16-300, Tamron 17-50, Tamron 24-70 and Tamron 70-200)
> 
> - noise reduction
> 
> - local contrast
> 
> - sharpening
> 
> - BCG
> 
> - save as jpg (same problem with save as tiff)
> 
> 
> First of all I check the files for the used lens, All pics of the same
> lens go to one queue. So there is a queue named 17-50 which holds all
> pics taken with the Tamron 17-50.
> 
> Then I use the tabs of the queue defintions (lower left part of teh
> screen), select the export directory, set the rename options, and when I
> use teh point: use all kernels on the third tab it leads to jpg /tiff
> which only consists of colors. It is independent whether I work with the
> computer during batch conversion or let it work without having any open
> program.
> 
> What I did to find out why it happens:
> 
> - step by step i removed the tools from the workflow. For example the
> first step was to remove BCG, but the error exists. The second test was
> to remove Sharpening, then local contrast, then noise reduction and then
> lens correction. But nothing helped.
> 
> The good jpg file has a size of about 5 MB the unusable file has a size
> of about 25 MB ?!
> 
> 
> My system:
> 
> 
> System: Host: ulf-mint-18 Kernel: 4.4.0-21-generic x86_64 (64 bit gcc:
> 5.3.1)
> 
> Desktop: Cinnamon 3.2.7 (Gtk 3.18.9-1ubuntu3.3) dm: mdm Distro: Linux
> Mint 18.1 Serena
> 
> Machine: Mobo: Gigabyte model: GA-MA770-UD3 v: x.x Bios: Award v: F9g
> date: 07/08/2010
> 
> CPU: Quad core AMD Phenom II X4 955 (-MCP-) cache: 2048 KB
> 
> flags: (lm nx sse sse2 sse3 sse4a svm) bmips: 25781
> 
> clock speeds: min/max: 800/3200 MHz 1: 800 MHz 2: 3200 MHz 3: 2100 MHz
> 4: 800 MHz
> 
> Graphics: Card: NVIDIA G96 [GeForce 9400 GT] bus-ID: 01:00.0 chip-ID:
> 10de:0641
> 
> Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
> 
> Resolution: 2560x1440 at 59.95hz
> 
> GLX Renderer: GeForce 9400 GT/PCIe/SSE2
> 
> GLX Version: 3.3.0 NVIDIA 340.102 Direct Rendering: Yes
> 
> Audio: Card-1 Advanced Micro Devices [AMD/ATI] SBx00 Azalia (Intel HDA)
> 
> driver: snd_hda_intel bus-ID: 00:14.2 chip-ID: 1002:4383
> 
> Card-2 Creative Live! Cam Chat HD [VF0700]
> 
> driver: USB Audio usb-ID: 002-002 chip-ID: 041e:4088
> 
> Sound: Advanced Linux Sound Architecture v: k4.4.0-21-generic
> 
> Network: Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
> Controller
> 
> driver: r8169 v: 2.3LK-NAPI port: de00 bus-ID: 04:00.0 chip-ID: 10ec:8168
> 
> IF: enp4s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
> 
> Drives: HDD Total Size: 10014.0GB (61.3% used)
> 
> ID-1: /dev/sda model: SAMSUNG_HD204UI size: 2000.4GB serial: S2H7J1BZB12304
> 
> ID-2: /dev/sdb model: ST2000DL003 size: 2000.4GB serial: 6YD0MAC9
> 
> ID-3: /dev/sdc model: SAMSUNG_HD154UI size: 1500.3GB serial: S1XWJ1KS924182
> 
> ID-4: /dev/sdd model: TS512GSSD320 size: 512.1GB serial: B360701044
> 
> ID-5: /dev/sde model: WDC_WD40EZRX size: 4000.8GB serial: WD-WCC4E1364197
> 
> 
> Thanks in advance for any help
> 
> Best regards
> 
> Ulf