Users not able to watch videos greater than 10 mins (1 reply)

My site does video streaming and users are not able to play videos greater than 10 mins.After 10-11 mins flowplayer stop playing the video but i don't get any error either by php/nginx/flowplayer
Is there anything wrong with my fastcgi buffers

fastcgi_pass unix:/tmp/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 128k;
fastcgi_buffers 256 16k;
fastcgi_busy_buffers_size 256k;
fastcgi_max_temp_file_size 0;