How Does One Forward Proxies Into Another Format Of Proxies? Questions

[UmerF]

Say I have username:password:ip:port or ip:port:username:password format proxy subscription - and i need to turn it into ip:port format proxies.

How can this be done?

Also - if I want to use my local IP as a set of IP:port proxies - how can this be done?

Thankyou.