# Thumbnails Keep Getting Generated

**URL:** <https://forums.plex.tv/t/thumbnails-keep-getting-generated/936474>\
**Category:** Plex Media Server\
**Tags:** server-unraid\
**Created:** [February 18, 2026, 2:01pm UTC](https://forums.plex.tv/t/thumbnails-keep-getting-generated/936474 "2026-02-18T14:01:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Schtief](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/schtief/32/228160_2.png) [@Schtief](https://forums.plex.tv/u/Schtief)\
**Post date:** [February 18, 2026, 2:01pm UTC](https://forums.plex.tv/t/thumbnails-keep-getting-generated/936474/1 "2026-02-18T14:01:15Z")

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Several video files keep getting processed with the scheduled tasks. This causes my disks on unraid to spinup all night. I found out that it has to do with the thumbnail generation. The log file is attached. It seems that the last chapter is broken in some way?!

There was another post that suggested to add `GenerateBIFKeyframesOnly=“0”` to `Preferences.xml` but this did not fix the issue at all. I also tried to shorten the end of the timestamp of the last chapter but this did not work either. Can someone please help 🙏

Server Version#: 1.43.0.10492

[Plex Media Scanner Chapter Thumbnails.4.log](https://forums.plex.tv/uploads/short-url/5tfBqUtpCPNG9lX6wKchhaT9L41.log) (62.8 KB)

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**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [May 19, 2026, 2:01pm UTC](https://forums.plex.tv/t/thumbnails-keep-getting-generated/936474/2 "2026-05-19T14:01:31Z")

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