FFmpeg for Linux

前段时间搭了个RTMP的环境，简单介绍下（主要是ffmpeg编译）：

Yasm（NASM汇编，支持X86和AMD64指令集，支持NAS和GNU汇编器语法）

wget http://www.tortall.net/projects/yasm/releases/yasm-1.2.0.tar.gz
tar xzvf yasm-1.2.0.tar.gz
cd yasm-1.2.0
./configure
make –j 4
make install

lame，mp3编码器 (最新版本3.99.5)
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wget http://sourceforge.net/projects/lame/files/latest/download?source=directory
tar zxvf lame-3.99.5.tar.gz
cd lame-3.99.5
./configure --enable-shared --prefix=/usr
make -j 4
make install

libogg，用于处理ogg多流传输格式的开发库，独立解码器（最新版本1.3.2）

wget
tar zxvf libogg-1.3.2.tar.gz
cd libogg-1.3.2
./configure
make -j 4
make install

libvoris，通用音频解码器，（最新版本1.3.5）
点击(此处)折叠或打开

wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.5.tar.gz
tar zxvf libvorbis-1.3.5.tar.gz
cd libvorbis-1.3.5
./configure
make -j 4
make install

XviD，MPEG-4视频编解码器
点击(此处)折叠或打开

wget http://downloads.xvid.org/downloads/xvidcore-1.3.2.tar.gz
tar zxvf xvidcore-1.3.2.tar.gz
cd xvidcore
./build/generic/configure
cd build/generic/
make -j 4
make install

x264，开源的H264/MPEG-4 AVC视频编码函数库

wget ftp://ftp.videolan.org/pub/x264/snapshots/last_x264.tar.bz2
bzip2 -d last_x264.tar.bz2
tar xvf last_x264.tar
cd x264-snapshot-20160106-2245/
./configure --enable-shared --enable-static --prefix=/usr
make
make install

libdts，DTS编码库
点击(此处)折叠或打开

wget http://download.videolan.org/pub/videolan/libdca/0.0.5/libdca-0.0.5.tar.bz2
bzip2 -d libdca-0.0.5.tar.bz2
tar xvf libdca-0.0.5.tar
cd libdca-0.0.5
./configure
make
make install

liba52，符合ATSC A/52标准的流媒体音频解码标准的程序软件包

wget http://liba52.sourceforge.net/files/a52dec-0.7.4.tar.gz
tar zxvf a52dec-0.7.4.tar.gz
cd a52dec-0.7.4
./configure
make -j 4
make install

faad2，用作MPEG-2和AAC格式的解码

wget http://downloads.sourceforge.net/faac/faad2-2.7.tar.gz
tar zxvf faad2-2.7.tar.gz
cd faad2-2.7
./configure
make -j 4
make install

faac，AAC音频编码器

点击(此处)折叠或打开

wget http://downloads.sourceforge.net/faac/faac-1.28.tar.gz
tar zxvf faac-1.28.tar.gz
cd faac-1.28
./configure --prefix=/usr
make -j 4
make install

注：遇到../../depcomp: line 512: exec: g++: not found提示时，需要安装gcc-c++软件包，yum –y install gcc-c++

已安装结束后，make可能会遇到错误：

点击(此处)折叠或打开

mpeg4ip.h:126: error: new declaration‘char* strcasestr(const char*, const char*)’
/usr/include/string.h:369: error: ambiguates old declaration‘const char* strcasestr(const char*, const char*)’
In file included from mp4common.h:29, from atom_avc1.cpp:22:

需要进行如下改动：

点击(此处)折叠或打开

从123行开始修改此文件mpeg4ip.h，到129行结束。
修改前：
#ifdef __cplusplus
extern "C" {
#endif
    char *strcasestr(const char *haystack, const char *needle);
#ifdef __cplusplus
}
#endif

修改后：
#ifdef __cplusplus
extern "C++" {
#endif
    const char *strcasestr(const char *haystack, const char *needle);
#ifdef __cplusplus
}
#endif

amr-nb，语音编码算法，自适应多速率编码
点击(此处)折叠或打开

wget http://www.penguin.cz/~utx/ftp/amr/amrnb-11.0.0.0.tar.bz2
bzip2 -d amrnb-11.0.0.0.tar.bz2
tar xvf amrnb-11.0.0.0.tar
cd amrnb-11.0.0.0/
./configure
make -j 4
make install

amr-wb，语音编码算法，自适应多速率编码
点击(此处)折叠或打开

wget http://www.penguin.cz/~utx/ftp/amr/amrwb-11.0.0.0.tar.bz2
bunzip2 amrwb-11.0.0.0.tar.bz2
tar xvf amrwb-11.0.0.0.tar
cd amrwb-11.0.0.0/
./configure
make
make install

FFmpeg

wget http://ffmpeg.org/releases/ffmpeg-2.8.4.tar.bz2
bunzip2 -d ffmpeg-2.8.4.tar.bz2
tar xvf ffmpeg-2.8.4.tar
cd ffmpeg-2.8.4/
./configure --prefix=/usr/local/ffmpeg2 --enable-libmp3lame --enable-libvorbis --enable-gpl --enable-version3 --enable-nonfree --enable-pthreads --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libxvid --enable-postproc --enable-ffserver --enable-ffplay

提示
ERROR: libopencore_amrnb not found，需要安装opencore-amr

wget ftp://ftp.linux.ro/gentoo/distfiles/opencore-amr-0.1.3.tar.gz
tar zxvf opencore-amr-0.1.3.tar.gz
cd opencore-amr-0.1.3
./configure --prefix=/usr
make -j 4
make install

再次编译FFmpeg
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./configure --prefix=/usr/local/ffmpeg2 --enable-libmp3lame --enable-libvorbis --enable-gpl --enable-version3 --enable-nonfree --enable-pthreads --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libxvid --enable-postproc --enable-ffserver --enable-ffplay
make -j 4
make install

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还需要测试一下，用了nginx搭建个web服务（nginx需要增加nginx_rtmp_module模块的支持），rtmp的配置和nginx的配置比较简单：
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worker_processes  1;
daemon on;
error_log  logs/error.log debug;

events {
    worker_connections  3000;
}

rtmp {
    server {
        listen 1935;
        chunk_size 4000;

        application test {
            live on;
        }
    }
}

http {
    include mime.types;
    default_type  application/octet-stream;

    server {
        listen      80;
        server_name vmware-hw-01;

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        location / {
            root /root/nginx/install/html;
        }
    }
}

准备一个test.html文件，里面嵌入了jwplayer的播放器：
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<html>
    <head>
        <script src="/jwplayer/jwplayer.js"></script>
    </head>

    <body>
        <div id="my-video"></div>
        <script type="text/javascript">
            jwplayer('my-video').setup({
                flashplayer: "/jwplayer/jwplayer.flash.swf",
                file:"rtmp://2.1.1.10/test/live_test",
                width:"50%",
                aspectratio:"3:2",
                fallback:"false",
                primary:"flash"
            });
        </script>
    </body>
</html>

附件jwplayer.tgz在/root/nginx/install/html下直接解压即可。最后还需要用新编译的ffmpeg进行编码转换和推流：
点击(此处)折叠或打开

#!/bin/bash

while true; do
    /usr/local/ffmpeg2/bin/ffmpeg -re -i test.mp4 -f flv "rtmp://2.1.1.10/test/live_test"
done

由于视频文件比较小，进行了循环播放。启动Nginx，ffmpeg脚本开始推流，客户端可以访问test.html观看直播视频了。