Public bug reported:
Using Ubuntu 20.10 (Groovy) Daily Live, GNOME session (gnome-session) on
Wayland. Nautilus is no longer showing thumbnails (generated by Totem)
for some video files, although the Totem thumbnail generator (totem-
video-thumbnailer) is working. Nautilus is showing thumbnails for video
files with (Ogg) Theora codec content (even if wrapped in a non-Ogg file
format, such as mkv), but not for others, although I have installed all
the required/usual libraries (libav*, gstreamer1*). Deleting the
thumbnail fail cache (~/.cache/thumbnails/fail/) does not help.
Installing ffmpegthumbnailer does not help either. This seems to be a
regression, or maybe some libraries for video files in non-free codec
formats have not been updated properly. Package versions are as
follows:-
Nautilus: 1:3.37.90-1ubuntu1
Totem: 3.34.1-2ubuntu2
ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: nautilus 1:3.37.90-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu44
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: GNOME
Date: Sat Aug 15 23:47:22 2020
InstallationDate: Installed on 2020-08-15 (0 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200814)
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_nautilus:
** Affects: nautilus (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug groovy nautilus thumbnail totem video wayland-session
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https://bugs.launchpad.net/bugs/1891767
Title:
Nautilus not showing video thumbnails
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