Problem with RAW(DNG) preview

[ArekMe]

When i upload DNG picture preview not showing
its search for ppm file but imagick generate png file in temp directory

I get in log

Debug   core    OC\Tags::__construct, tags: Array ( )   2015-04-07T17:47:22+00:00
Debug   galleryplus [PreviewService] ERROR! Did not get a preview, sending mime icon    2015-04-07T17:47:11+00:00
Error   core    unable to open image `/tmp/magick-18116CLP7PZmXvNqH.ppm': No such file or directory @ error/blob.c/OpenBlob/2701    2015-04-07T17:47:11+00:00
Debug   core    Generating preview for "////L1004235.DNG" with "OC\Preview\Raw" 2015-04-07T17:47:11+00:00
Debug   galleryplus [PreviewService] Fetching the preview   2015-04-07T17:47:11+00:00
Debug   core    OC\Tags::__construct, tags: Array ( )   2015-04-07T17:47:08+00:00
Debug   galleryplus Supported Mimes: ["image/png","image/jpeg","image/gif","image/x-xbitmap","image/bmp","image/x-dcraw","image/svg+xml"]   2015-04-07T17:47:08+00:00
Debug   core    OC\Tags::__construct, tags: Array ( )   2015-04-07T17:40:32+00:00
Error   core    unable to open image `/tmp/magick-18116576-NkMWtVg7.ppm': No such file or directory @ error/blob.c/OpenBlob/2701    2015-04-07T17:40:32+00:00
Debug   core    Generating preview for "L1004235.DNG" with "OC\Preview\Raw" 2015-04-07T17:40:32+00:00
Debug   core    OC\Tags::__construct, tags: Array ( )   2015-04-07T17:40:32+00:00
Debug   galleryplus Supported Mimes: ["image/png","image/jpeg","image/gif","image/x-xbitmap","image/bmp","image/x-dcraw","image/svg+xml"]   2015-04-07T17:40:31+00:00
Error   core    unable to open image `/tmp/magick-18116C4FoUTjozurj.ppm': No such file or directory @ error/blob.c/OpenBlob/2701

[oparoz]

Thanks for the report.
Are you sure your Imagemagick setup is capable of converting Raw files? You need to install 3rd party components.
Are you able to successfully convert other media files such as Photoshop?

[ArekMe]

no problem with generating psd preview.
raw preview is generated ... i found them in eg /tmp/magick-18116dawmVnzYAgdJ.png but owncloud try display /tmp/magick-18116dawmVnzYAgdJ.ppm ... different extension

[oparoz]

Did you apply the tmpfile-extension patch?

[oparoz]

And in order to be sure that you can convert Raw files, you need to use the command line. The png you see might be the embedded preview.

[oparoz]

I just ran into the same issue when testing. Sometimes a file can't be converted and there is nothing we can do except reject the preview.