a simple bash script can do this.
Code:
curl -u FTP-Username1:Password1 -T /home/admin/transfer/*.mp4 ftp://ftp.server1.com/
curl -u FTP-Username2:Password2 -T /home/admin/transfer/*.mp4 ftp://ftp.server2.com/
curl -u FTP-Username3:Password3 -T /home/admin/transfer/*.mp4 ftp://ftp.server3.com/