During download process youtube-dl creates a lot of *.ytdl files. Usually filling it with up to 1 MiB and then adding it to the main file. Baloo tries to index those, but there is no good reason to do that.
Git commit 23f424fc9c0003f7180c6728e855eb9f8f771366 by Nate Graham. Committed on 05/08/2020 at 17:02. Pushed by ngraham into branch 'master'. Don't index .ytdl files FIXED-IN: 5.74 M +2 -1 src/file/fileexcludefilters.cpp https://invent.kde.org/frameworks/baloo/commit/23f424fc9c0003f7180c6728e855eb9f8f771366