TROUBLESHOOTING --------------- - video-thumbnailer On problems with the shotwell-video-thumbnailer you can switch to the ffmpegthumnailer. Please run as root: 1. Backup /usr/lib/shotwell-video-thumbnailer: * mv /usr/lib/shotwell-video-thumbnailer /usr/lib/shotwell-video-thumbnailer.org 2. Install ffmpegthumbnailer: * apt-get install ffmpegthumbnailer 3. Create a new executable file: * touch /usr/lib/shotwell-video-thumbnailer * chmod --reference=/usr/lib/shotwell-video-thumbnailer.org /usr/lib/shotwell-video-thumbnailer 4. Write into the new file: * echo "#! /bin/bash" >/usr/lib/shotwell-video-thumbnailer * echo "ffmpegthumnailer -i \"$1\" -o -b -c png >>/usr/lib/shotwell-video-thumbnailer Or you can use the file replace_thumbnail.sh from the examples directory. Thanks to Teo Romera