Ubuntu 12.04
nginx 1.2.4
avconv-版本
avconv version 0.8.10-4:0.8.10-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
built on Feb 6 2014 20:56:59 with gcc 4.6.3
avconv 0.8.10-4:0.8.10-0ubuntu0.12.04.1
libavutil 51. 22. 2 / 51. 22. 2
libavcodec 53. 35. 0 / 53. 35. 0
libavformat 53. 21. 1 / 53. 21. 1
libavdevice 53. 2. 0 / 53. 2. 0
libavfilter 2. 15. 0 / 2. 15. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 52. 0. 0 / 52. 0. 0
我正在使用 avconv 和 nginx 创建 HLS 流,但现在我的延迟通常超过 30 秒。经过大量阅读,我知道 HLS 具有内置延迟,并且 10 秒是预期的,甚至是首选,但 30 秒似乎非常极端。
我在 nginx-rtmp google group 上看到了很多讨论,特别是这个线程有很多建议。我试图通过减少hls_fragment
和来减少解决我的问题,hls_playlist_length
但它们没有产生显着的效果。
nginx.conf:
#user nobody;
worker_processes 1;
error_log logs/error.log debug;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
server {
listen 8888;
server_name localhost;
add_header 'Access-Control-Allow-Origin' "*";
location /hls {
types {
application/vnd.apple.mpegurl m3u8;
video/mp2t ts;
}
root /tmp;
}
# rtmp stat
location /stat {
rtmp_stat all;
rtmp_stat_stylesheet stat.xsl;
}
location /stat.xsl {
# you can move stat.xsl to a different location
root /usr/build/nginx-rtmp-module;
}
# rtmp control
location /control {
rtmp_control all;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
rtmp {
server {
listen 1935;
ping 30s;
notify_method get;
application myapp {
live on;
hls on;
hls_path /tmp/hls;
hls_base_url http://x.x.x.x:8888/hls/;
hls_sync 2ms;
hls_fragment 2s;
#hls_variant _low BANDWIDTH=160000;
#hls_variant _mid BANDWIDTH=320000;
#hls_variant _hi BANDWIDTH=640000;
}
}
}
avconv 命令:
avconv -r 30 -y -f image2pipe -codec:v mjpeg -i - -f flv -codec:v libx264 -profile:v baseline -preset ultrafast -tune zerolatency -an -f flv rtmp://127.0.0.1:1935/myapp/mystream
编辑
我知道瓶颈不是 avconv,因为我也在使用 nginx 生成 RTMP 流。此 RTMP 流的延迟非常小(几秒钟)。