//要执行的cmd命令
//$cmd = "ffmpeg -i $base" . "$filepath " . "$base$outfile";
$directory = "D:\ipwebV2\htdocs\ipweb2.0\public\uploads\medias\downloads";
$path = str_replace('\\', '/', mb_convert_encoding($directory, 'UTF-8','UTF-8'));
$path = str_replace('//', '/', $path);
$cmd = "D:/ffmpeg/bin/ffmpeg.exe -i {$path}/pre_4.wav -f mp3 -acodec libmp3lame -y {$path}/pre_4.mp3";
echo $cmd;
system($cmd, $output);
//echo "成功";exit;
print_r($output);exit;
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