结合图像和音频ffmpeg xampp php

Question

I have ffmpeg installed in my xampp. I'm trying combine one image file with one audio file to produce one video file using a php script. However, no file is produced. I've tried:

<?php

$ffmpegcmd = "ffmpeg -loop 1 -i C:\xampp\htdocs\testingffmpeg\dog.png -i C:\xampp\htdocs\testingffmpeg\dog.wav -c:v libx264 -tune stillimage \ -c:a aac -strict experimental -b:a 192k -pix_fmt yuv420p -shortest C:\xampp\htdocs\testingffmpeg\dog.mp4";

shell_exec($ffmpegcmd);  

?>

and

<?php

shell_exec("ffmpeg -loop 1 -i C:\xampp\htdocs\testingffmpeg\dog.png -i C:\xampp\htdocs\testingffmpeg\dog.wav -c:v libx264 -tune stillimage \ -c:a aac -strict  experimental -b:a 192k -pix_fmt yuv420p -shortest C:\xampp\htdocs\testingffmpeg\dog.mp4");

?>

and

<?php

shell_exec("C:\xampp\php\ext\ffmpeg -loop 1 -i C:\xampp\htdocs\testingffmpeg\dog.png -i C:\xampp\htdocs\testingffmpeg\dog.wav -c:v libx264 -tune stillimage \ -c:a aac -strict experimental -b:a 192k -pix_fmt yuv420p -shortest C:\xampp\htdocs\testingffmpeg\dog.mp4");

?>

Answer 1

The problem is with slashes inside your double-quoted string. PHP threats those as command sequences (e.g. states for carriage return etc.)

You have two possibilities: either escape slashes with addslashes:

<?php
  shell_exec( addslashes( '$ffmpegcmd = "ffmpeg -loop 1 -i C:\xampp\htdocs\testingffmpeg\dog.png -i C:\xampp\htdocs\testingffmpeg\dog.wav -c:v libx264 -tune stillimage \ -c:a aac -strict experimental -b:a 192k -pix_fmt yuv420p -shortest C:\xampp\htdocs\testingffmpeg\dog.mp4'; ) );
?>