我过去曾多次使用exec()函数从命令行可执行文件中捕获信息,并打算使用RTMPDump.exe再次执行此操作。 PHP代码如下,并且与我过去使用的任何其他cmd行示例一起使用,但在这种情况下不会产生任何$ output:
$cmd = 'c:\rtmpdump\rtmpdump -r "rtmp://fms.domain.com/live/live_800"';
exec($cmd, $output);
foreach ($output as $item){
// do something with this $item
}
我已经通过将Windows命令行放在.bat文件中并运行它来尝试它,其中ase $ output然后仅包含bat文件中回显的内容,但不包含下面显示的输出,这是什么从命令行手动运行命令时的结果。
C:\rtmpdump>rtmpdump -r "rtmp://fms.domain.com/live/live_800"
RTMPDump v2.3
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
ERROR: rtmp server sent error
Starting Live Stream
For duration: 2.000 sec
INFO: Metadata:
INFO: author
INFO: copyright
INFO: description
INFO: keywords
INFO: rating
INFO: title
INFO: presetname Custom
INFO: creationdate Tue May 08 03:00:23 2012
INFO: videodevice Osprey-440 Video Device 1B
INFO: framerate 25.00
INFO: width 480.00
INFO: height 360.00
INFO: videocodecid avc1
INFO: videodatarate 800.00
INFO: avclevel 30.00
INFO: avcprofile 66.00
INFO: videokeyframe_frequency10.00
INFO: audiodevice Osprey-440 Audio Device 1B
INFO: audiosamplerate 22050.00
INFO: audiochannels 1.00
INFO: audioinputvolume 75.00
INFO: audiocodecid mp4a
INFO: audiodatarate 48.00
#######
Download complete
C:\rtmpdump>rtmpdump
程序运行,这不是问题,有一个输出文件显示视频数据转储,所以可执行文件的语法不是问题 - 问题是是否有任何其他方法来拦截什么rtmpdump.exe正在输出到命令窗口,而不是通过exec()从PHP运行它来捕获。
如果重要的话,那就是我有兴趣使用的“信息:......”。我正在尝试确定实时视频流是否正在流式传输。服务器正在运行,但我需要知道特定的流(live_800)是否正在流式传输。
答案 0 :(得分:7)
感谢JohnF让我走上正轨,如果其他任何新手需要完成此任务,请使用 proc_open 来完成此操作:
$descriptorspec = array(
0 => array("pipe", "r"), // stdin is a pipe that the child will read from
1 => array("pipe", "w"), // stdout is a pipe that the child will write to
2 => array("pipe", "w") // stderr is a pipe that the child will write to
);
$cmd = c:\rtmpdump\rtmpdump -r "rtmp://fms.domain.com/live/live_800 -B 1 -m 3";
$process = proc_open($cmd, $descriptorspec, $pipes);
if (is_resource($process)) {
$stdin = stream_get_contents($pipes[0]);
$stdout = stream_get_contents($pipes[1]);
$stderr = stream_get_contents($pipes[2]);
fclose($pipes[0]); fclose($pipes[1]); fclose($pipes[2]);
// It is important that you close any pipes before calling proc_close in order to avoid a deadlock
$return_value = proc_close($process);
}
答案 1 :(得分:0)
尝试passthru功能。