Limit connections to mp4 files

Hello

I set this to my nginx config to prevent users playing multiple videos
at
the same time:

http {
limit_conn_zone $binary_remote_addr zone=addr:10m;
server {
location ~ .mp4$ {
limit_conn addr 2;
limit_conn_log_level info;

This doesn’t seems to prevent anyone from playing at least three videos
at
once…
What am I doing wrong here?