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After updating to Ubuntu 17.04 my .mkv files aren't showing any thumbnails

What have I tried so far?

  1. Installed ubuntu-restricted-extras that didn't work.
  2. Rebooted after installing ubuntu-restricted-extras
  3. Tried this answer but it's for Trusty not 17.04
  4. Tried changing thumbnail size is nautilus preferences.

as of yet, nothing has helped

Screenshot

Sumeet Deshmukh
  • 9,296

1 Answers1

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Failed thumbnail creation attempts are cached to prevent repeated attempts for performance. So those files are still ignored after you've fixed thumbnail creation.
Those failed files are stored in ~/.cache/thumbnails/fail, delete one or all.

Also, there's a file size limit in Preferences -> Search & Preview(Gnome file manager previously called Nautilus), usually files larger than 10MB are ignored in thumbnail creation. Maximum size can be set to 4GB.

Alexandr Karbivnichyi
  • 141