I’ve seen this happen the last couple of episodes I’ve grabbed.
Something in the last two days has changed such that the logs complain of two things:
mediainfo is required but was not found: libmediainfo.so.0
/dir/filename.mkv] has a runtime of 0, is it a valid video file?
Sonarr version (exact version): 2.0.0.4240
**Mono version (if Sonarr is not running on Windows)☆: 4.2.2 (Stable 4.2.2.30/996df3c Fri Jan 29 21:11:18 CET 2016) OS: QNAP – QTS: 4.2.1 (20160705)
Further to this:
It is installed in /opt/bin which is available in $PATH … but I don’t see a libmediainfo.so in /opt/lib
[~] # opkg install mediainfo
Package mediainfo (0.7.85-1) installed in root is up to date.
[/opt/bin] # ls mediainfo
mediainfo*
[~] # echo $PATH
/opt/bin:/opt/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/bin/X11:/usr/local/sbin:/usr/local/bin:/usr/local/jre/bin:/Apps/bin:/Apps/sbin
libmediainfo is the pure library, it may need to be compiled or installed separately for qnap. I suggest you search the qnap forums, they may have more information on that.