Nginx reverse proxy for mpeg-ts. Not working. Lighttpd is better than Nginx?

Hello, I bought a new high resolution camera. The camera is able to generate a multicast stream, that I set as input to VLC.

I configure VLC to stream via http the multicast stream.

If I go directly to VLC-http (from Smart IPTV on my LG TV, for example), I can see the video with no problems.
If I set nginx as reverse proxy to VLC-http, and I go to nginx, I can see the video starting, but, after about 2 seconds, it stops and start continuously.

The flow received by Smart IPTV is about 11Mbit/s.

My nginx configuration for reverse proxy is:

location /a69514ffd9d53524e240ee023f3463890f799774/camera.ts {
proxy_pass http://192.168.1.44:50001/camera.ts;
proxy_cache off;
proxy_buffering off;
}

Using lighttpd as reverse proxy works, but I would like to use nginx, because I feel confortable with nginx.

Anyway, it seems that for this use case, lighttpd is better than nginx.... :-(

Do you know any setting to optimize reverse proxy to VLC for high throughput (about 11Mbit/s)?

Thanks, regards