Transcoder hits 100% CPU without anything playing

System runs Ubuntu 14.04LTS, 64 Bit. Plex Server 1.0.2.2413. Logs attached, although they’re just basically repeating the same line.

Jul 27, 2016 17:53:13.442 [0x7f376efff700] ERROR - [Transcoder] [mpeg2video @ 0x2f90360] qscale == 0

This happens on a daily basis since the last update. I’m not quite sure what kind of media kicks this off as most of the time when I catch it doing it the logs are already full and any useful data has already fallen off the logs. Any pointers in the right direction would be awesome, I can supply anything needed.

To re-iterate, the process hits 100% without the server playing anything or scanning anything, effectively looking idle.

Thanks!

the line after you aborted the process gives a hint:
ERROR - BIF transcoder exited abnormally
Settings - Server - Library - Generate video preview thumbnails
Settings - Server - Library - Generate chapter thumbnails
set both to ‘Never’, then restart PMS

Now watch the server if the cpu load stays up again.
It if doesn’t, you have identified the cause.
Now you need to determine the particular video file with which the transcoder takes exception.
export your video libraries with Plex2CSV
sort the dump after ‘Added’, descending
filter out all lines where ‘Part Indexed’ already contains ‘sd’

Of the remaining files, the topmost (and maybe 1 or 2 after it) are worth closer inspection. The developers might also be interested in a sample of the file.

Thanks, that seems to have solved the issue by turning off the thumbnails. I’m working through the CSV files now. If I do find something, what’s the best way to engage the developers when reporting the files?

Just send me the download link to the sample per PM, I will relay them.