#2 He means

[stb herndz]

it would be great if it had a percentage rate implemented, he means something like a carculator like staxrip so whenever we face to encode something, we would know what are we getting by choosing a certain amount of size or bitrate.

Staxrip is a neat example in two pass mode, input the source, it says the size and how much bitrate the output would have, it really could do well for encoders, hoping you to think on that.