path="/home/admin/docs/"

in_file="'doc.mkv'"
out_file="-f flv rtmp://live.justin.tv/app/streamkey"

cd $path

filter="-s hd480 -aspect 16:9"
codec="-vcodec libx264 -preset fast -crf 27 -acodec libfaac -ab 128k -ar 44100 -ac 2"

command_line="ffmpeg -re -i $in_file $filter $codec $out_file"

echo $command_line
eval $command_line

exit