Sure, no idea where quick-extract log might be. Don't see any.
Here's the server log file (attached). It appears (to me) that the thumbnail extraction started around 15:38:01 if I am reading it correctly, tried running one of those commands in a ssh session but it fails, perhaps something else needs to be set for it to work. So, please ignore the following manual attempt if my wild guess means nothing. I just wanted to see what it was doing. On the .1% chance it's relevant....
/opt/emby-server/bin/ffmpeg -ss 00:03:47.972 -f mpegts -i file:"/home/emby/TV/KTEN News at 10/KTEN News at 10 2019_04_29_22_00_00.ts" -an -sn -threads 0 -vframes 1 -vf "scale=600:trunc(ow/a/2)*2,thumbnail=24" -f image2 test.jpg
/opt/emby-server/bin/ffmpeg: error while loading shared libraries: libavdevice.so.58: cannot open shared object file: No such file or directory
I suppose there could be codec issues, it's just antenna channels via hdhomerun with many different resolutions, etc. Doesn't seem to matter if it's an interlaced or progressive. Worked fine under the Roku thumbnail plugin too. If the bif file is of any use, can upload that too, it's just 4.5MB.
I suppose this now belongs in a server forum since it's not roku specific.
Edited by sfatula, 30 April 2019 - 07:59 PM.