Gnome Raw Thumbnailer is very very slow

[François Tissandier]

The generation of Raw thumbnails takes ages right now. I shoot Raw for years, I always used Ubuntu, and it's the first time that it's so slow. I didn't change my camera (Canon 5DIII & Sony Nex5N). And my computers are the same also. The difference is very very noticable since the upgrade to version 13.10.

[Anton Keks (anton-azib)]

I am also experiencing this problem.

It seems that Gnome now requests 256px thumbnails instead of the former 128px.

The thumbnailer from sourceforge.net (last updated in 2005) that Ubuntu packages seems to cope very badly with the sizes bigger than 160 (the exif thumbnail size).

Ubuntu should switch to gnome's thumbnailer, which is based on libopenraw:

http://libopenraw.freedesktop.org/wiki/RawThumbnailer/

This one rotates thumbnails and is much faster. You will be able to close at least 3 bugs at once by swithing the implementation.
Please, stop packaging this old stuff from sourceforge.

BTW, here is a bit improved version of the gnome's thumbnailer:
https://github.com/angryziber/gnome-raw-thumbnailer

[Anton Keks (anton-azib)]

I have packaged the new raw-thumbnailer based on libopenraw that rotates thumbnails properly:
https://code.launchpad.net/~anton-azib/ubuntu/saucy/raw-thumbnailer/speed-n-orientation

Binary packages:
https://launchpad.net/~anton-azib/+archive/fixes/

Remove gnome-raw-thumbnailer and install raw-thumbnailer 3.1.0 from my PPA for testing

[Anton Keks (anton-azib)]

The version in my PPA is already reasonably fast, but if you want to make it ultra-fast (to generate thousands of thumbnails in seconds), edit /usr/share/thumbnailers/raw.thumbnailer after installing raw-thumbnailer from my PPA
and change "-s %s" to "-s 160" - this will generate thumbnails of 160px in size instead of Gnome3's default 256px, but will be several times faster

[scaglifr (fgs)]

Hi,

Sadly, as of just now the version in the PPA when installed on a 64 bit 13.10 system produces corrupted / gibberish thumbnails from Canon cr2 files from a D7. I was really hoping to find a solution to the very slow raw-thumbnail problem.

Thanks,

Francesco

[Anton Keks (anton-azib)]

Please install the new version 3.1.1 from the ppa - I have made a workaround for a bug in libopenraw:
https://bugs.freedesktop.org/show_bug.cgi?id=72270

Now I have tested that it works with newer cameras than 5D mark 2, e.g. 7D and 5D mark 3.

[betozamo (betozamo)]

Hi Anton, just so you know, the 3.1.1 version from your PPA is working great with my Canon 70D Raw files.
The slowness was killing me. Thanks for your work!!

Beto

[Nathan Adams (nadams)]

Any support for wiley?

[Anton Keks (anton-azib)]

Provided package works on wiley just fine, I am using it myself.