Gray or corrupted thumbnails for low quality video/mp2t video files
Version: 20.04.01 File manager: Nautilus 1:3.36.3-0ubuntu1
Tested: ffmpegthumbnailer, gstreamer1.0-libav, gstreamer1.0-plugins-ugly, gstreamer1.0-plugins-bad
Dolphin: Display thumbnails for every video files properly (out of the box) https://github.com/KDE/dolphin
Gray or corrupted thumbnails (those videos so far 280p, 360p, 480p range) include .ts, .mp4 etc.
Edited by Andre Klapper