Piwigo 2.9.4. Running videoJS 2.9.b. avconv and avprobe installed by apt-get. Entered path for them and ran sync rebuilding thumbnails. This displays:
ffprobe error reading file. Is ffprobe install? Is ffprobe in path?
Is the video accessible & readable, Try to run the command manually.
/usr/bin/avprobe -hide_banner -loglevel fatal -show_error -show_format -show_streams -print_format json './galleries/john/family/Kathryn/Hiccups.MP4'
Running the command manually displays:
Failed to set value '-loglevel' for option 'hide_banner'
If I delete the "hide-banner" option and rerun the command it works. BTW, it did not display a banner.