Install ffmpegthumbnailer-dbg by entering the following commands in the terminal:
sudo apt update sudo apt install ffmpegthumbnailer-dbg
Description:
debugging information for ffmpegthumbnailer
FFmpegthumbnailer is a lightweight video thumbnailer that can be used by file managers to create thumbnails for your video files. The thumbnailer uses ffmpeg to decode frames from the video files, so supported videoformats depend on the configuration flags of ffmpeg. . This package contains the debugging symbols for ffmpegthumbnailer.
Homepage: http://code.google.com/p/ffmpegthumbnailer/
Version: 2.1.1-0.1build1
Section: universe/debug