I'm running Imagemagick on CentOS 7, converting a directory of .jpg files to an mpg file and getting this error
convert -delay 5 fileprefix*.jpg -quality 80 test.mpg
convert: delegate failed `"ffmpeg" -v -1 -mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 300 -i "%M%%d.jpg" "%u.%m" 2> "%Z"' @ error/delegate.c/InvokeDelegate/1065.
Any idea what the problem is?