目录
一、服务器安装ffmpeg
1、准备编译环境
yum install -y automake autoconf libtool gcc gcc-c++ #CentOS
2、编译所需源码包
#yasm:汇编器,新版本的ffmpeg增加了汇编代码
wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz
tar -xzvf yasm-1.3.0.tar.gz
cd yasm-1.3.0
./configure
make
make install
#lame:Mp3音频解码
wget http://jaist.dl.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz
tar -xzvf lame-3.99.5.tar.gz
cd lame-3.99.5
./configure
make
make install
#amr支持
wget http://downloads.sourceforge.net/project/opencore-amr/opencore-amr/opencore-amr-0.1.3.tar.gz
tar -xzvf opencore-amr-0.1.3.tar.gz
cd opencore-amr-0.1.3
./configure
make
make install
#amrnb支持
wget http://www.penguin.cz/~utx/ftp/amr/amrnb-11.0.0.0.tar.bz2
tar -xjvf amrnb-11.0.0.0.tar.bz2
cd amrnb-11.0.0.0
./configure
make
make install
#amrwb支持
wget http://www.penguin.cz/~utx/ftp/amr/amrwb-11.0.0.0.tar.bz2
tar -xjvf amrwb-11.0.0.0.tar.bz2
cd amrwb-11.0.0.0
./configure
make
make install
#ffmpeg
wget http://ffmpeg.org/releases/ffmpeg-2.5.3.tar.bz2
tar -xjvf ffmpeg-2.5.3.tar.bz2
cd ffmpeg-2.5.3
./configure --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3 --enable-shared
make
make install
#加载配置
#最后写入config后,终端运行ffmpeg命令,出现success和已安装的扩展,则运行成功。
ldconfig
3、shell使用方法
ffmpeg -i test.mp3 -ac 1 -ar 8000 test.amr #MP3转换AMR
ffmpeg -i test.amr test.mp3 #AMR转换MP3
4、错误解决办法
执行转换代码时如果出现错误
①错误:“ffmpeg: error while loading shared libraries: libmp3lame.so.0: cannot open shared object file: No such file or directory”
原因:ffmpeg默认安装目录为“/usr/local/lib”,有些64位系统下软件目录则为“/usr/lib64
解决:建立软链接ln -s /usr/local/lib/libmp3lame.so.0.0.0 /usr/lib64/libmp3lame.so.0
②错误:ffmpeg: error while loading shared libraries: libavdevice.so.54: cannot open shared object file: No such file or directory
原因:动态链接库未找到
解决:1、可以通过如下方式查看ffmpeg的动态链接库哪些没有找到
ldd `which ffmpeg`
libavdevice.so.54 => not found
libavfilter.so.3 => not found
libavformat.so.54 => not found
libavcodec.so.54 => not found
libswresample.so.0 => not found
libswscale.so.2 => not found
libavutil.so.51 => not found
libm.so.6 => /lib64/libm.so.6 (0x00002ab7c0eb6000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00002ab7c100b000)
libc.so.6 => /lib64/libc.so.6 (0x00002ab7c1125000)
/lib64/ld-linux-x86-64.so.2 (0x00002ab7c0d9a000)
2、查找对应库所在位置
find /usr/local/lib/ | grep -E "libavdevice.so.54|libavfilter.so.3|libavcodec.so.54"
/usr/local/lib/libavfilter.so.3.17.100
/usr/local/lib/libavcodec.so.54.59.100
/usr/local/lib/libavdevice.so.54
/usr/local/lib/libavcodec.so.54
/usr/local/lib/libavfilter.so.3
/usr/local/lib/libavdevice.so.54.2.101
3、查看链接库配置文件
more /etc/ld.so.conf | grep /usr/local/lib
4、如果不包含的话,需要编辑此文添加
vi /etc/ld.so.conf
/usr/local/lib
/usr/local/lib64
#运行配置命令
ldconfig
二、部署PHP脚本
1、创建目录
mkdir /home/www/amr
mkdir /home/www/mp3
2、转换PHP脚本
<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2019/11/29
* Time: 13:57
*/
namespace app\script\controller;
use think\Controller;
class Mp3 extends Controller
{
/**
* amr转MP3
*/
public function amrToMp3()
{
set_time_limit(0);
//每秒执行一次
for ($i = 1; $i <= 60; $i++) {
$path = '/home/www/script/amr';
if (is_dir($path)) {
$dir = scandir($path);
foreach ($dir as $value) {
if ($value == '.' || $value == '..') {
continue;
} else {
$amr = '/home/www/amr/' . $value;
$mp3 = '/home/www/mp3/' . substr($value, 0, -4) . '.mp3';
$command = "/usr/local/bin/ffmpeg -i $amr $mp3";
shell_exec($command);
}
}
}
//转换需要时间,避免未转换完就删除文件
sleep(1);
//删除amr后缀的所有文件
$command = "rm -rf /home/www/amr/*.amr";
shell_exec($command);
}
}
}
3、设置定时任务实时调用转换脚本
* * * * * /usr/bin/php /home/www/mp3.php
4、下载微信录音文件并保存到服务器的脚本
<?php
class uploadMp3
{
public function upload()
{
//下载
$url = "http://file.api.weixin.qq.com/cgi-bin/media/get?access_token=" . $_GET['token'] . "&media_id=" . $_GET['id'];
$data = $this->downLoadFile($url);
//文件名称
$file_name = $_GET['name'];
//扩展名
$ext = '.amr';
//保存路径
$file_dir = './amr/';
$this->saveWeixinFile($file_dir . $file_name . $ext, $data);
}
/**
* 下载
* @param $url
* @return mixed
*/
public function downLoadFile($url)
{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_NOBODY, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$package = curl_exec($ch);
curl_close($ch);
return $package;
}
/**
* 保存MP3到本地
* @param $name
* @param $content
*/
public function saveWeixinFile($name, $content)
{
$local_file = fopen($name, 'w');
if (false !== $local_file) {
if (false !== fwrite($local_file, $content)) {
fclose($local_file);
}
}
}
}
$uploadMp3 = new uploadMp3();
$uploadMp3->upload();