How to use ffmpeg to add text subtitles to videos in PHP, _PHP tutorial

How to use ffmpeg to add text subtitles to videos in PHP.

This article mainly introduces the method of using PHP to add subtitles to videos using ffmpeg. It analyzes the PHP operation with examples. The technique of adding letters to videos with ffmpeg has certain reference value. Friends in need can refer to it.

The example in this article describes how to use ffmpeg to add subtitles to videos in PHP. Share it with everyone for your reference. The specific implementation method is as follows:

<&#63;php 
$dir = './'; // set to current folder 
if ($handle = opendir($dir)) { 
 while(false!== ($file = readdir($handle))) { 
 if ( is_file($dir.$file) ){ 
 if (preg_match("'\.(avi)$'", $file) ){ 
 $sub_file = str_ireplace(".avi", ".srt", $dir.$file); 
 $idx_file = str_ireplace(".avi", ".idx", $dir.$file); 
 $thumb_file = str_ireplace(".avi", ".jpg", $dir.$file); 
 $out_file = str_ireplace(".avi", ".mp4", $dir.$file); 
 flv_convert_get_thumb($dir.$file, $sub_file, $idx_file, $thumb_file, $out_file); 
 } 
 else{ 
 continue; 
 } 
 } 
 } 
 closedir($handle); 
} 
//flv_convert_get_thumb('input.avi', 'input.srt', 'output.jpg', 'output.ogm'); 
// code provided and updated by steve of phpsnaps ! thanks 
// accepts: 
// 1: the input video file 
// 2: path to thumb jpg 
// 3: path to transcoded mpeg&#63; 
function flv_convert_get_thumb($in, $in_sub, $in_idx, $out_thumb, $out_vid){ 
 // get thumbnail 
 $cmd = 'ffmpeg -v 0 -y -i '.$in.' -vframes 1 -ss 250 -vcodec mjpeg -f rawvideo -s 286x160 -aspect 16:9 '.$out_thumb; 
 $res = shell_exec($cmd); 
 // $res is the output of the command 
 // transcode video 
$cmd = 'mencoder '.$in.' -o '.$out_vid.' -sub '.$in_sub.' -subfont-text-scale 3.0 -subpos 99 -af volume=10 -aspect 16:9 -of avi -noodml -ovc x264 -x264encop$ 
 $res = shell_exec($cmd); 
} 
&#63;>

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http://www.bkjia.com/PHPjc/1133096.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1133096.htmlTechArticlephp uses ffmpeg to add text subtitles to videos. This article mainly introduces how PHP uses ffmpeg to add text subtitles to videos. How to add subtitle display, an example analysis of php operating ffmpeg to video...