[Solved] mod evasive and ip restriction

Hello,
to limit the automatic downloading videos with scripts or software I use mod_evasive with this statement:

$HTTP["url"] =~ "\.(mp4|flv)$" {
evasive.max-conns-per-ip = 1
}

What I don't understand well is what evasive.max-Conns-per-ip = 1 means that the visitor can access to video at a time or he can visit only one video by day or session?