falsebyte

iptables -A PREROUTING -i eth0 -p tcp -m tcp --dport PORT -j DNAT --to-destination IP:PORT

ffmpeg -re -i video.mp4 -c:v libx264 -b:v 5M -pix_fmt yuv420p -c:a:0 libfdk_aac -b:a:0 480k -f mpegts udp://239.220.220.220:1234

[~]# cat test.txt
22 xxxxxxxxxxxxxxxx
2 yyyyyyyyyyyyyyyyyyyyyy
2 qqqqqqqqqqqqqqqqqq
6 xxxxxxxxxxxxxxxxxxxx
4 ffffffffffffffff
4 9718947ddddddddddddddddddd
4 2351273512735 0989089089
4 lllllllllllllllllllllllll
[~]# cat test.txt | awk '{$1=$1/2; print}'
11 xxxxxxxxxxxxxxxx
1 yyyyyyyyyyyyyyyyyyyyyy
1 qqqqqqqqqqqqqqqqqq
3 xxxxxxxxxxxxxxxxxxxx
2 ffffffffffffffff
2 9718947ddddddddddddddddddd
2 2351273512735 0989089089
2 lllllllllllllllllllllllll