HLS m3u8 question

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Discussed in #3261

^{Originally posted by DennisHeerema July 25, 2023}
HI,

I use the HLS setup from the liquidsoap website in combination with nginx. But what i notice is that the live.m3u8 file seems to disapear after a while, looks like it doesn't get recreated, while the other lofi.m3u8, midfi.m3u8 do get recreated and are there all the time.

Here is my liquidsoap script:

log.file.path.set("C:/Program Files/liquidsoaphls/log/HLS.log")
log.stdout.set(true)

# Input the stream,
# from an Icecast server or any other source
url = "http://xx.xxx.xx.xxx:80/studio"
input = mksafe(input.http(url))

s = input
	               
aac_lofi = %ffmpeg(format="mpegts", %audio(codec="libfdk_aac", channels=2, ar=44100, b="48k", afterburner=1, profile="aac_he_v2"))

aac_midfi = %ffmpeg(format="mpegts", %audio(codec="libfdk_aac", channels=2, ar=44100, b="64k"))

streams_info = [("aac_lofi",(40000,"mp4a.40.29","ts")), ("aac_midfi",(110000,"mp4a.40.2","ts"))]

streams = [("aac_lofi",aac_lofi), ("aac_midfi", aac_midfi)]

def segment_name(~position,~extname,stream_name) =
  timestamp = int_of_float(time())
  duration = 4
  "#{stream_name}_#{duration}_#{timestamp}_#{position}.#{extname}"
end

output.file.hls(playlist="live.m3u8", segment_duration=4.0, segments=10, segments_overhead=5, segment_name=segment_name, "C:/nginx/html/hls", streams, input)

and my nginx script

#user  nobody;
# multiple workers works !
worker_processes  2;

events {
    worker_connections  8192;
    # max value 32768, nginx recycling connections+registry optimization = 
    #   this.value * 20 = max concurrent connections currently tested with one worker
    #   C1000K should be possible depending there is enough ram/cpu power
    # multi_accept on;
}


http {
    sendfile off;
    tcp_nopush on;
    directio 512;
    include mime.types;
    default_type application/octet-stream;

    server_names_hash_bucket_size 128;

## Start: Timeouts ##
    client_body_timeout   10;
    client_header_timeout 10;
    keepalive_timeout     30;
    send_timeout          10;
    keepalive_requests    10;




server {
        listen	xxx.xxx.xxx.xxx:8080;
        server_name  video.fzo.nu video.flevoziekenomroep.nl;

        location / {
            root "C:/nginx/html";
        }
		
		location /hls {
            # Disable cache
            add_header Cache-Control no-cache;

            # CORS setup
            add_header 'Access-Control-Allow-Origin' '*' always;
            add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
            add_header 'Access-Control-Allow-Headers' 'Range';

            # allow CORS preflight requests
            if ($request_method = 'OPTIONS') {
                add_header 'Access-Control-Allow-Origin' '*';
                add_header 'Access-Control-Allow-Headers' 'Range';
                add_header 'Access-Control-Max-Age' 1728000;
                add_header 'Content-Type' 'text/plain charset=UTF-8';
                add_header 'Content-Length' 0;
                return 204;
            }
			
			types {
                application/vnd.apple.mpegurl m3u8;
                video/mp2t ts;
            }
			
			root "C:/nginx/html";
		}
    }
}

rtmp {
    server {
        listen 1935;
        allow play all;
        chunk_size 4096;
		buflen 5s;

        application live {
            live on;
            allow publish all;
            allow play all;
			
            #enable HLS
            hls on;
            hls_path "C:/nginx/html/hls";
            hls_fragment 5;
            hls_playlist_length 10m;
        }
		
      application hls {
        live on;
        hls on;
	hls_path "C:/nginx/html/hls";
        hls_fragment 15s;
      }
    }
}

So why does the live.m3u8 created by liquidsoap disapears?

Kind regards,

Dennis