PHP exec waits for return key

Question

I am trying to execute ffmpeg on PHP using exec, shell_exec, command and proc_open and did not manage to get any to work.
This is my command:

exec("ffmeg -I test.fvl output.mp4 2>&1", $output, $retval);

when I run this php command, the error happens when there's a duplicate output file and prompt a stderr asking if we want to overwrite it thus, waiting for a user input. Is there any way around this to ignore the stderr?

score 0 · Answer 1 · answered Dec 18 '17 at 08:58

0

you can add the "-y" Parameter to overwrite the existing file.
Hope this helps.

Grtngs Dustin

answered Dec 18 '17 at 08:58

Dustin Jeuck

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Gene M · Answer 2 · 2017-12-18T09:09:37.003

0

Have you considered using proc_open ? Here's a sample code from another thread.

Edit: Knowing ffmeg, you can also add -y option in ffmpeg.

edited Dec 18 '17 at 09:09

answered Dec 18 '17 at 08:59

Gene M

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2
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I did try proc_open to try to return a input to the prompt but it does not seem to be able to get the std_err value thus, unable to know when there is a duplicate from just the proc_open. However, it does work if I have known beforehand that it has a duplicate copy and write to stdin immediately. – Zavfel Dec 18 '17 at 09:06
If you don't mind overwriting the file, then you can add the -y option. – Gene M Dec 18 '17 at 09:08

score 0 · Accepted Answer · answered Dec 18 '17 at 08:59

There are few options, choose one that suits you the best:

Avoid usage of duplicate file name: Check if the file name exists, if so then select different name file_exists($output); PHP file_exists
Reuse the file name: Force the file to be overwritten ffmeg -y ffmpeg Documentation 5.4 Main options

PHP exec waits for return key

3 Answers3