nginx-rtmp-module: hls stops working: force fragment split

Any idea why this configuration stops working after a few days:

worker_processes 4;
pid /run/nginx.pid;
#error_log  /var/log/nginx/debug.log debug;

events {
     worker_connections 1024;
     multi_accept on;
 }

 rtmp_auto_push on;
 rtmp {
    server {
        listen 1935;

        application student {
            live on;

            hls on;
            hls_path /run/shm/hls-student;

            dash on;
            dash_path /run/shm/dash-student;

            # pull to start hls export
            pull rtmp://lb.av.carnet.hr/student name=one static;
         }
}
2015/01/23 09:22:45 [error] 16433#0: *1 hls: force fragment split: 682283.103 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:22:45 [error] 16433#0: *1 hls: force fragment split: -682275.068 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:22:53 [error] 16433#0: *1 hls: force fragment split: 682275.068 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:22:53 [error] 16433#0: *1 hls: force fragment split: -682267.034 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:23:01 [error] 16433#0: *1 hls: force fragment split: 682267.034 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:23:01 [error] 16433#0: *1 hls: force fragment split: -682259.000 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:23:09 [error] 16433#0: *1 hls: force fragment split: 682259.000 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:23:09 [error] 16433#0: *1 hls: force fragment split: -682250.943 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:23:17 [error] 16433#0: *1 hls: force fragment split: 682250.943 sec, , client: lb.av.carnet.hr/student, server: ngx-relay
2015/01/23 09:23:17 [error] 16433#0: *1 hls: force fragment split: -682242.909 sec, , client: lb.av.carnet.hr/student, server: ngx-relay

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Having the same problem here. @dburianov, do you have an idea about what has changed from your distribution version to your own ffmpeg compilation? I’m using ffmpeg 4.0.4 from Fedora 29.

What happens to me looks like a (I know I’m not using the appropriate words) “desync” with the chunk size or something like that: 2019/05/04 15:25:05 [error] 969#0: *101 hls: force fragment split: 10.007 sec, , client: 127.0.0.1, server: 0.0.0.0:1935 2019/05/04 15:25:15 [error] 969#0: *101 hls: force fragment split: 10.008 sec, , client: 127.0.0.1, server: 0.0.0.0:1935 2019/05/04 15:25:25 [error] 969#0: *101 hls: force fragment split: 10.008 sec, , client: 127.0.0.1, server: 0.0.0.0:1935