I've been seeing this more often than usual lately. https://en.wikipedia.org/wiki/File:Pembroke_Highway_Map_timeline.ogv has the transcode jobs for VP9 480P, VP9 360P, VP9 240P, VP9 180P, WebM 360P and WebM 240P listed with the status "Error on 05:50, 24 May 2021". VP9 120P, WebM 480P and WebM 160P were okay though. I reset VP9 480P to stop the video from looking like total garbage.
https://commons.wikimedia.org/wiki/File:Millie_Bobby_Brown_Pandora_2020.webm has the transcode status for VP9 480P, VP9 360P, VP9 240P, VP9 180P, VP9 120P, WebM 360P, WebM 240P and WebM 160P listed as "Added to Job queue 30 days, 11 hours, 49 minutes, 1 second ago". VP9 720P and WebM 480P were added 1 second earlier. VP9 1080P, WebM 1080P and WebM 720P are fine.
https://en.wikipedia.org/wiki/File:Tehachapi_Energy_Storage_Project_Ribbon-Cutting.webm VP9 120P listed status "Error on 21:57, 1 February 2021"
https://en.wikipedia.org/wiki/File:Angel_-_Daniel_Lopatin.webm VP9 120P and WebM 160P "Added to Job queue 247 days, 5 hours, 48 minutes, 35 seconds ago"
https://en.wikipedia.org/wiki/File:Tehachapi_Energy_Storage_Project-B-Roll_Video.ogg WebM 160P "Error on 01:07, 21 July 2020"
https://commons.wikimedia.org/wiki/File:049_-_%C4%88u_la_universo_estas_senfina_-_scivolemo_-_zdf.webm VP9 180P "Error on 11:03, 24 May 2021"
https://commons.wikimedia.org/wiki/File:Internetmuseum_wikipedia20.webm VP9 180P, VP9 120P, WebM 360P and WebM 240P "Error on 08:11, 24 May 2021"