我正在尝试为我的项目制作视频上传功能。但是我对ffmpeg部分有问题。ffmpeg已经安装在我的服务器上。但是我无法得到任何缩略图。我尝试使用以下代码创建缩略图:
$videoa = exec("/usr/bin/ffmpeg -i $videoUrlp.flv -f flv -s 650x390 $videoUrlp.mp4 2>&1");
$videob = exec("/usr/bin/ffmpeg -i $videoUrlp.mp4 -vcodec png -ss 00:00:5 -s 650x390 -vframes 1 -an -f rawvideo $videoUrlp.png");
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但是我将其var_dump();用于var_dump($videoa);和var_dump($videob);
字符串(74)“ https://mywebsite.com/uploads/video/ey1kXNew_video.flv:输入/输出错误”字符串(0)“”
另外,如果我使用shell_exec这样的:
$videoa = shell_exec("/usr/bin/ffmpeg -i $videoUrlp.flv -f flv -s 650x390 $videoUrlp.mp4");
$videob = shell_exec("/usr/bin/ffmpeg -i $videoUrlp.mp4 -vcodec png -ss 00:00:5 -s 650x390 -vframes 1 -an -f rawvideo $videoUrlp.png");
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和var_dumps()给我NULL NULL。
请帮我哪里错了。
这是我完整的视频上传代码:
$valid_formats = array("mp4","MP4","flv");
if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST") {
$name = $_FILES['uploading']['name'];
$size = $_FILES['uploading']['size'];
if(strlen($name)) {
$ext = strtolower(pathinfo($name, PATHINFO_EXTENSION));
$name = alphaID(microtime(true) * 10000).'_video';
if(in_array($ext,$valid_formats)) {
if($size<(50024*50024)) {
$GetVideoName = $name;
$video_ext=$ext;
$tmp = $_FILES['uploading']['tmp_name'];
if(move_uploaded_file($tmp, $videoPath.$GetVideoName.'.'.$video_ext)) {
$videoUrlp = $base_url.'uploads/video/'.$GetVideoName;
$videoa = exec("/usr/bin/ffmpeg -i $videoUrlp.flv -f flv -s 650x390 $videoUrlp.mp4 2>&1");
$videob = exec("/usr/bin/ffmpeg -i $videoUrlp.mp4 -vcodec png -ss 00:00:5 -s 650x390 -vframes 1 -an -f rawvideo $videoUrlp.png");
echo var_dump($videoa);
echo var_dump($videob);
} else {
echo "Fail upload folder with read access.";
}
} else
echo "Image file size max 1 MB";
} else
echo "invalidvieo";
} else
echo "Please select image..!";
exit;
}
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我也这样测试过:
echo exec("/usr/bin/ffmpeg -i $videoUrlp.flv -ar 22050 -ab 32 -f flv -s 780x400 $videoUrlp.$video_ext");
echo exec("/usr/bin/ffmpeg -i $videoUrlp.$video_ext -deinterlace -an -ss 1 -t 00:00:05 -r 1 -y -vcodec mjpeg -f mjpeg $videoUrlp.png 2>&1");
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我看到以下回声
video:71kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
然后再尝试一次,我得到此注释:https : //mywebsite.com/uploads/video/1547892356_video.flv:连接被拒绝
echo exec("/usr/bin/ffmpeg -i $videoUrlp.flv -ar 22050 -ab 32 -f flv -s 780x400 $videoUrlp.$video_ext");
echo exec("/usr/bin/ffmpeg -i $videoUrlp.$video_ext -deinterlace -an -ss 1 -t 00:00:05 -r 1 -y -vcodec mjpeg -f mjpeg $videoUrlp.png 2>&1");
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这是最后一个shell_exec输出:
$local = 'https://website.com/uploads/video/'.$GetVideoName.'.'.$video_ext;
$localTumb = 'https://website.com/uploads/video/'.$GetVideoName.'.png';
echo shell_exec("/usr/bin/ffmpeg -i $local -deinterlace -an -ss 1 -t 00:00:05 -r 1 -y -vcodec mjpeg -f mjpeg $localTumb 2>&1");
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ffmpeg版本2.8.15版权所有(c)2000-2018,使用gcc 4.8.5(GCC)20150623(Red Hat 4.8.5-36)构建的FFmpeg开发人员配置:--prefix = / usr --bindir = / usr / bin
--datadir = / usr / share / ffmpeg --incdir = / usr / include / ffmpeg --libdir = / usr / lib64 --mandir = / usr / share / man --arch = x86_64 --optflags ='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE = 2 -fexceptions -fstack-protector-strong --param = ssp-buffer-size = 4 -grecord-gcc-switches -m64 -mtune = generic'--extra-ldflags ='-Wl,-z,relro'--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-nutnuts --enable-ladspa --enable- libass --enable-libcdio --enable-libdc1394 --enable-libfdk-aac --enable-nonfree --disable-indev = jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir = / usr / lib64 --enable-runtime-cpudetect libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60。100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100输入#0,mov,mp4,m4a,3gp,3g2,mj2,来自“https://website.com/uploads/video/e0J6HwtK_video.mp4 ':元数据:major_brand:mp42 minor_version:0compatible_brands:isommp42 creation_time:2018-01-01 12:09:49持续时间:00:00:41.49,开始: 0.000000,比特率:230 kb / s流#0:0(und):视频:h264(受约束的基线)(avc1 / 0x31637661),yuv420p,240x360 [SAR 1:1 DAR 2:3],158 kb / s,9.73 fps,9.73 tbr,19462 tbn,19.46 tbc(默认)元数据:handler_name:VideoHandler Stream#0:1(und):音频:aac(LC)(mp4a / 0x6134706D),44100 Hz,单声道,fltp,71 kb / s (默认值)元数据:creation_time:2018-01-01 12:09:49 handler_name:IsoMedia文件由Google制作,2011年5月11日[swscaler @ 0xc8c580]已弃用像素格式,请确保您正确设置了范围输出#0 ,mjpeg到' https://website.com/uploads/video/e0J6HwtK_video.png':元数据:major_brand:mp42 minor_version:0compatible_brands:isommp42编码器:Lavf56.40.101流#0:0(und):视频:mjpeg,yuvj420p(pc),240x360 [SAR 1:1 DAR 2:3],q = 2-31,200 kb / s,1 fps,1 tbn,1 tbc(默认)元数据:handler_name:VideoHandler编码器:Lavc56.60.100 mjpeg流映射:流#0:0->#0:0(h264(本机) -> mjpeg(本机))按[q]停止,[?]表示帮助帧= 5 fps = 0.0 q = 1.6 Lsize = 100kB时间= 00:00:05.00比特率= 163.9kbits / s dup = 0 drop = 32视频:100kB音频:0kB字幕:0kB其他流:0kB全局标头:0kB混合开销:0.000000%
参数必须被转义,你不能只是将变量作为参数转储在那里,网址包含类似&在 shell 中具有特殊含义的东西......例如这个
exec("/usr/bin/ffmpeg -i $videoUrlp.flv -f flv -s 650x390 $videoUrlp.mp4 2>&1");
应该是这样的:
exec("/usr/bin/ffmpeg -i ".escapeshellarg($videoUrlp.flv)." -f flv -s 650x390 ".escapeshellarg($videoUrlp.mp4)." 2>&1");
但..
请有人可以帮助我吗?
这里有 2 个获取缩略图的函数,getThumbPng2() 将首先使用 curl 下载整个视频,将其保存到一个临时文件中,然后使用 ffmpeg 提取 url(如果 ffmpeg 不是使用 http/https/ 构建的,这会更安全)任何支持,或者 ffmpeg 是否被防火墙或其他任何东西阻止,但缺点是它可能会慢得多)
并且第一个函数从 ffmpeg 获取缩略图而不先获取视频(这可能要快得多,因为 ffmpeg 只会读取所需的部分而不是下载整个视频,但由于上述原因可能无法正常工作)
function getThumbPng2(string $uri, string &$imageBinary=NULL, string &$stderr=NULL):bool{
$ch=curl_init($uri);
if(!$ch){
$imageBinary=$stderr="curl_init() failed";
return false;
}
$tmph=tmpfile();
curl_setopt_array($ch,array(
CURLOPT_SSL_VERIFYPEER=>false,
CURLOPT_SSL_VERIFYHOST=>false,
CURLOPT_FILE=>$tmph
));
if(!curl_exec($ch)){
$imageBinary=$stderr="curl error: ".curl_errno($ch).": ".curl_error($ch);
curl_close($ch);
fclose($tmph);
return false;
}
curl_close($ch);
$ret=getThumbPng(stream_get_meta_data($tmph)['uri'],$imageBinary,$stderr);
fclose($tmph);
return $ret;
}
function getThumbPng(string $uri,string &$imageBinary=NULL, string &$stderr=NULL):bool{
$imageBinary="";
$stderr="";
$descriptorspec = array(
0 => array("pipe", "rb"), // stdin
1 => array("pipe", "wb"), // stdout
2 => array("pipe","wb") // stderr
);
$cmd="ffmpeg -i ".escapeshellarg($uri)." -ss 00:00:3 -s 650x390 -vframes 1 -c:v png -f image2pipe -";
// var_dump($cmd);
$proc = proc_open($cmd, $descriptorspec, $pipes);
if(!$proc){
$stderr="failed to start ffmpeg, proc_open(\"ffmpeg\",...) failed. (why? don't know, and PHP has no way of telling us either, afaik.)";
return false;
}
fclose($pipes[0]);// by default stdin is *inherited*, which is not what we want,
// so to avoid the default behaviour, we explicitly create a stdin pipe and close it.
$fetch=function()use(&$pipes,&$imageBinary,&$stderr){
$tmp=stream_get_contents($pipes[1]);
if(is_string($tmp)){
$imageBinary.=$tmp;
}
$tmp=stream_get_contents($pipes[2]);
if(is_string($tmp)){
$stderr.=$tmp;
}
};
while(($status=proc_get_status($proc))['running']){
usleep(10*1000);
$fetch();
}
$fetch();
fclose($pipes[1]);
fclose($pipes[2]);
$ret=$status['exitcode'];
proc_close($proc);
//var_dump($ret);
return ($ret===0);
}
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用法示例:
<?php
if(getThumbPng("http://files.4x4norway.no/2018/vik2.webm",$imageBinary,$stderr)){
echo "got a thumbnail! (the png binary data is in the \$imageBinary variable.)";
}else{
var_dump($imageBinary);
echo "failed to create thumbnail! error: {$stderr}";
}
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