I'm using a tool to generate a photo album from my photo collection. This tool uses GraphicsMagick under the hood to generate thumbnails of the photos. Unfortunately , GraphicsMagick gives an error on a lot of photo's to get its properties, e.g.:
gm identify ./building.jpg
gives the following error:
C:\program files\graphicsmagick-1.3.42-q16\gm.exe identify: Backing store not supported (./building.jpg).
C:\program files\graphicsmagick-1.3.42-q16\gm.exe identify: Request did not return an image.
I have the feeling that it has something to do with GIMP as well, as it mostly happens on photos that were postprocessed using GIMP.
- What does this error mean? I cannot find any pointer in the GraphicsMagick FAQ
- Is the image corrupt? It appears normal in any photo viewer. The file I'm testing is building.jpg
- Is there a way to get more debug output grom GraphicsMagick?
