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FFmpeg Minimal Build for RTMP Streaming

This tutorial will work you through steps of configuring an FFmpeg build tailored for RTMP streaming on macOS. At first I think of making it support general live streaming, with additional protocols like HLS, but to keep things simple let's stick with RTMP for now. (Anyway, I do include HLS in the protocol list as well as some related bitstream filters but it's untested.)

Goal

The built FFmpeg executable should

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FROM ubuntu:20.04

RUN apt-get -qq update && apt-get -qq upgrade

ENV NGINX_VERSION nginx-1.19.3
ENV FFMPEG_VERSION snapshot
ENV NGINX_RTMP_MODULE_VERSION 1.2.1

ARG DEBIAN_FRONTEND=noninteractive
ENV TZ=America/New_York

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function getGenericInterceptor(className, func, parameters) {
	args = []
	for (i = 0; i < parameters.length; i++) { 
        	args.push('arg_' + i) 
    }
    var script = "result = this.__FUNCNAME__(__SEPARATED_ARG_NAMES__);\nlogmessage = '__CLASSNAME__.__FUNCNAME__(' + __SEPARATED_ARG_NAMES__ + ') => ' + result;\nconsole.log(logmessage);\nreturn result;"
    
    script = script.replace(/__FUNCNAME__/g, func);
    script = script.replace(/__SEPARATED_ARG_NAMES__/g, args.join(', '));
    script = script.replace(/__CLASSNAME__/g, className);

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#!/bin/bash

#This script will compile and install a static ffmpeg build with support for nvenc un ubuntu.
#See the prefix path and compile options if edits are needed to suit your needs.

#install required things from apt
installLibs(){
echo "Installing prerequisites"
sudo apt-get update
sudo apt-get -y --force-yes install autoconf automake build-essential libass-dev libfreetype6-dev libgpac-dev \

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#!/bin/sh

# Based on instructions found here: http://wiki.razuna.com/display/ecp/FFMpeg+Installation+on+CentOS+and+RedHat#FFMpegInstallationonCentOSandRedHat-InstallX264

if [ "`/usr/bin/whoami`" != "root" ]; then
    echo "You need to execute this script as root."
    exit 1
fi

cat > /etc/yum.repos.d/centos.repo<<EOF

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# TODO: Verify to link statically some dependencies usually not available in a default instllation of RHEL/CentOS (ex.: libxcb)

###################
## Configuration ##
###################

FFMPEG_CPU_COUNT=$(nproc)
FFMPEG_ENABLE="--enable-gpl --enable-version3 --enable-nonfree --enable-runtime-cpudetect --enable-gray --enable-openssl --enable-libfreetype"
FFMPEG_HOME=/usr/local/src/ffmpeg

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linux查看httpd进程数

ps -ef | grep httpd | wc -l

查看Apache的并发请求数及其TCP连接状态

netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

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package com.benli.app.utils;

import android.content.Context;
import android.content.SharedPreferences;
import android.provider.Settings.Secure;
import android.telephony.TelephonyManager;
import android.util.Log;

import java.io.UnsupportedEncodingException;
import java.util.UUID;

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import android.content.Context;
import android.content.SharedPreferences;
import android.provider.Settings.Secure;
import android.telephony.TelephonyManager;

import java.io.UnsupportedEncodingException;
import java.util.UUID;

public class DeviceUuidFactory {

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% concat, binary

B1= <<1,2>>.
B2= <<3,4>>.
B3= <<B1/binary, B2/binary>>.
% <<1,2,3,4>>