RE: [PHP] can't get output of exec ('nice -n 19 ffmpeg -i file')

2008-09-29 Thread Richard Lynch 
I think nice may play games with fork etc and may be confusing php.

Try putting the nice -n 19 ffmpeg -I bit into a mini shell script of its own, 
and call that.

 -Original Message-
 From: Rene Veerman [mailto:[EMAIL PROTECTED]
 Sent: Monday, September 29, 2008 1:54 PM
 To: php-general@lists.php.net
 Subject: [PHP] can't get output of exec ('nice -n 19 ffmpeg -i file')

 Hi, i have the following php statements;

 I'm wondering why exec()'s $output remains empty..
 Any help is greatly appreciated..

 ?php
 $cmd = 'nice -n 19 ffmpeg -i '.$sourcePath.'';
 exec ($cmd, $output, $result);
  return array (
 'cmd' = $cmd,
 'output' = $output,
 'result' = $result
 );


 which when executed returns

 [cmd]=string(128) nice -n 19 ffmpeg -i /data/web/secret/20080929
 201651/work/MVI_1993.avi
 [output]=array(0) {
 }
 [result]=int(1)
 }

 if i run the same cmd on the commandline, it nicely returns:

 FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard
   configuration:  --enable-gpl --enable-pp --enable-pthreads
 --enable-vorbis --enable-libogg --enable-a52 --enable-dts
 --enable-libgsm --enable-mp3lame --enable-faad --enable-dc1394
 --disable-debug --enable-shared --prefix=/usr
   libavutil version: 0d.49.0.0
   libavcodec version: 0d.51.11.0
   libavformat version: 0d.50.5.0
   built on Sep 29 2008 18:43:44, gcc: 4.1.2 20061115 (prerelease)
 (Debian 4.1.1-21)
 Input #0, avi, from
 '/data/web/LIVE_WEBSITES/www/veerman.name/mediaBeez_content/media/uploa
 d/20080929
 201651/work/MVI_1993.avi':
   Duration: 00:01:45.6, start: 0.00, bitrate: 1746 kb/s
   Stream #0.0: Video: mjpeg, yuvj422p, 320x240, 15.00 fps(r)
   Stream #0.1: Audio: pcm_u8, 11024 Hz, mono, 88 kb/s
 Must supply at least one output file



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Re: [PHP] can't get output of exec ('nice -n 19 ffmpeg -i file')

2008-09-29 Thread Ashley Sheridan 
On Mon, 2008-09-29 at 20:53 +0200, Rene Veerman wrote:
 Hi, i have the following php statements;
 
 I'm wondering why exec()'s $output remains empty..
 Any help is greatly appreciated..
 
 ?php
 $cmd = 'nice -n 19 ffmpeg -i '.$sourcePath.'';
 exec ($cmd, $output, $result);
  return array (
 'cmd' = $cmd,
 'output' = $output,
 'result' = $result
 );

 
 which when executed returns
 
 [cmd]=string(128) nice -n 19 ffmpeg -i /data/web/secret/20080929 
 201651/work/MVI_1993.avi
 [output]=array(0) {
 }
 [result]=int(1)
 }
 
 if i run the same cmd on the commandline, it nicely returns:
 
 FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard
   configuration:  --enable-gpl --enable-pp --enable-pthreads 
 --enable-vorbis --enable-libogg --enable-a52 --enable-dts 
 --enable-libgsm --enable-mp3lame --enable-faad --enable-dc1394 
 --disable-debug --enable-shared --prefix=/usr
   libavutil version: 0d.49.0.0
   libavcodec version: 0d.51.11.0
   libavformat version: 0d.50.5.0
   built on Sep 29 2008 18:43:44, gcc: 4.1.2 20061115 (prerelease) 
 (Debian 4.1.1-21)
 Input #0, avi, from 
 '/data/web/LIVE_WEBSITES/www/veerman.name/mediaBeez_content/media/upload/20080929
  
 201651/work/MVI_1993.avi':
   Duration: 00:01:45.6, start: 0.00, bitrate: 1746 kb/s
   Stream #0.0: Video: mjpeg, yuvj422p, 320x240, 15.00 fps(r)
   Stream #0.1: Audio: pcm_u8, 11024 Hz, mono, 88 kb/s
 Must supply at least one output file
 
 
 
You could do

$cmd = 'nice -n 19 ffmpeg -i '.$sourcePath.'';
$output = shell_exec($cmd);

Don't forget though, that as this is making PHP wait for output from the
shell, a lengthy shell process could mean the PHP script times out
(depending on your timing settings) and I think this will cause the exec
command to fail.

What you could consider is to execute a bash script that itself makes an
entry someplace, either through the command line PHP, command line SQL
or editing a file that PHP can look at later.


Ash
www.ashleysheridan.co.uk


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Re: [PHP] can't get output of exec ('nice -n 19 ffmpeg -i file')

2008-09-29 Thread Daniel Brown 
On Mon, Sep 29, 2008 at 2:53 PM, Rene Veerman [EMAIL PROTECTED] wrote:
 Hi, i have the following php statements;

 I'm wondering why exec()'s $output remains empty..
 Any help is greatly appreciated..

 ?php
   $cmd = 'nice -n 19 ffmpeg -i '.$sourcePath.'';
   exec ($cmd, $output, $result);
 return array (
   'cmd' = $cmd,
   'output' = $output,
   'result' = $result
   );

Try this instead, just to make sure everything's running as expected:

?php
 $cmd = 'nice -n 19 ffmpeg -i '.$sourcePath.' 21';
 exec($cmd,$ret,$err);
 print_r($ret);
?

$ret (or whatever you name the second parameter of exec()) will
always be an array, regardless of the actual output from the command.

You'll need to be sure you have shell access and the ability to
execute system commands as whatever user the PHP script is running
(your own user, apache, httpd, nobody, daemon, pscln, etc.).

Redirecting the error channel to stdout (using the 21 redirect
at the tail of the command) will also give you the full program
response on $ret, which is then dumped in full using print_r() as
shown above.

-- 
/Daniel P. Brown
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Re: [PHP] can't get output of exec ('nice -n 19 ffmpeg -i file')

2008-09-29 Thread Rene Veerman 

bingo, this fixed it :)

thx (all) for answering so quickly :)

Daniel Brown wrote:

Try this instead, just to make sure everything's running as expected:

?php
 $cmd = 'nice -n 19 ffmpeg -i '.$sourcePath.' 21';
 exec($cmd,$ret,$err);
 print_r($ret);
?

$ret (or whatever you name the second parameter of exec()) will
always be an array, regardless of the actual output from the command.

You'll need to be sure you have shell access and the ability to
execute system commands as whatever user the PHP script is running
(your own user, apache, httpd, nobody, daemon, pscln, etc.).

Redirecting the error channel to stdout (using the 21 redirect
at the tail of the command) will also give you the full program
response on $ret, which is then dumped in full using print_r() as
shown above.

  



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Re: [PHP] can't get output of exec ('nice -n 19 ffmpeg -i file')

2008-09-29 Thread Rene Veerman 
I have other ffmpeg statements that i execute in the same manner. They 
do produce the desired result-files, but also do _not_ have $output set 
to the text i see when i run the commands from the commandline..


I'd like to get output from all my executions of ffmpeg, its usefull for 
detailing error reporting.



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