FFMPEG-PHP example code

问题:

Can any one help me. I looking to convert a video file into flv using php and ffmpeg. I have tried some of the existing solution on stackoverflow but with no luck.

exec('ffmpeg -i Videos/robot.avi -ab 96k -b 700k -ar 44100 -s 640x480 -acodec mp3 Videos/robot.flv');

This is my code nothing happens when I execute this.

回答1:

I assume your ffmpeg command works from CLI OK. If not, get that working first.

If you are trying to output FLV created on-the-fly with PHP and ffmpeg, try this:

<?php
  header("video/x-flv");
  passthru('ffmpeg -i Videos/robot.avi -ab 96k -b 700k -ar 44100 -s 640x480 -acodec mp3 Videos/robot.flv');
?>

#### EDIT #####

Here is a link to ffmpeg documentation that talks about using STDOUT: http://www.ffmpeg.org/ffmpeg-doc.html#TOC41

I think you should be able to do this:

<?php
  header("video/x-flv");
  passthru('ffmpeg -i Videos/robot.avi -ab 96k -b 700k -ar 44100 -s 640x480 -acodec mp3 -f flv pipe:');
?>

回答2:

Check out this example: https://trac.ffmpeg.org/wiki/PHP

You should get it running in your CLI first before writing a PHP script.

After reading the example it seems like you want to use

shell_exec("insert ffmpeg command here");

Here's an ffmpeg php class that might be helpful:

https://github.com/olaferlandsen/FFmpeg-PHP-Class

回答3:

I needed 'sudo' to run it on my local machine. For video/x-flv you need: "Content-Type: video/x-flv". My code:

<?php

    header("Content-Type: video/x-flv");
    passthru('sudo ffmpeg -i Videos/robot.avi -ab 96k -b 700k -ar 44100 -s 640x480 -acodec mp3 -f flv pipe:');

?>