Capture FFMPEG output

Question

I need to read the output from ffmpeg in order to even try the solution to my question from yesterday. This is a separate issue from my problem there, so I made a new quest

Answer 1

To get output status and output:

exec("ffmpeg -i input.avi output.mp4 2>&1", $output, $returnStatus);

print_r($output);

if($returnStatus === 0){
   // success
}
else {
   //fail
}

Answer 2

You can use exec and print_r the output...

exec("ffmpeg -i input.avi -vcodec h264 -acodec aac -strict -2 output.mp4 2>&1",$output);

echo "<pre>";
print_r($output);
echo "</pre>";

Answer 3

The problem is you catch only stdout and not stderr (see Standard Streams). Change this line:

$command = "/usr/bin/ffmpeg -i " . $src;

into

$command = "/usr/bin/ffmpeg -i " . $src . " 2>&1";

and give it another try :)

Answer 4

Use ffprobe instead, it's much quicker and supports JSON output.

$output = shell_exec('ffprobe -v quiet -print_format json -show_format -show_streams "path/to/yourfile.ext"');
$parsed = json_decode($output, true);

And you have all your video info in a php array! This is much faster than ffmpeg -i for some reason.