Comments on: An FFMPEG Question – Why PHP’s exec() Doesn’t Return the Command Output /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/ on web development Fri, 26 Oct 2018 21:40:18 +0000 hourly 1 https://wordpress.org/?v=5.0.3 By: Dima Maykov /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-382603 Mon, 09 Nov 2015 17:52:01 +0000 /?p=2293#comment-382603 Cool. Your site are helping a lot of programmer of world.

Thanks.

]]> By: Joe /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-257872 Wed, 28 Jan 2015 14:37:09 +0000 /?p=2293#comment-257872 Yes, very helpful.
I would also like to know what the “2>&1” means / does? Will it also work for other commands?

]]> By: Ryan /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-18738 Thu, 06 Jun 2013 15:53:46 +0000 /?p=2293#comment-18738 Thanks for this! Works perfectly for me

]]> By: fabrizio /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-18462 Sun, 03 Feb 2013 17:25:35 +0000 /?p=2293#comment-18462 I’m sorry, I have the same problem even if more severe. my code worked, then I do not know why they have stopped doing it overnight. the code is:

exec(“ffmpeg -i video/howtodo.flv 2>&1”,$duration,$return);
var_dump($return);
var_dump($duration);
and the result on the screen is:
int 1

array
empty

what is the problem in your opinion??? thanks in advance

]]> By: Engels Antonio /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-16710 Thu, 04 Oct 2012 16:09:32 +0000 /?p=2293#comment-16710 This saved me a lot of time, thanks!

]]> By: Stoimen /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-15032 Mon, 23 Jan 2012 08:12:21 +0000 /?p=2293#comment-15032 @John Anderson – $output is a string containing the command’s output, i.e. what you normally see in the terminal.

]]> By: John Anderson /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-15030 Sun, 22 Jan 2012 20:51:35 +0000 /?p=2293#comment-15030 What is $output? A file path?

]]> By: The Web Help /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-15018 Wed, 18 Jan 2012 00:49:03 +0000 /?p=2293#comment-15018 Yes, the 2>&1 at the end helped me get the output too, the command looks like this now:

system("ffmpeg -i sample.flv 2>&1");

Thank you.

]]> By: Felix /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-14573 Thu, 10 Nov 2011 11:02:02 +0000 /?p=2293#comment-14573 Hey Stoimen,

that little “2>&1” helped me out.. Thanks!

]]> By: ahmet bardiz /2011/04/12/an-ffmpeg-question-why-phps-exec-doesnt-return-the-command-output/comment-page-1/#comment-14343 Wed, 22 Jun 2011 03:11:32 +0000 /?p=2293#comment-14343 I have a problem like you have said in use of the exec() method with a parameter of the ffmpeg command.
But I did not understand what you mean with the

“The solution is quite simple. You’ve to redirect the output of the FFMPEG command to the standard output.

/usr/local/bin/ffmpeg -i /var/www/android/test.mp4 2>&1”
What the “2>&1” means?
Thanks 😉

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