Example of using php5-ffmpeg to capture video images in PHP, _PHP tutorial

Example of using php5-ffmpeg to capture video images in PHP,

When I was playing with FFmpeg a few days ago, I suddenly discovered that there is an extension package called php5-ffmpeg on Ubuntu. I wanted to play with it and see if it works. I came to two conclusions:
Reading videos depends on the support of FFmpeg. If you want to support all formats, it is recommended to recompile FFmpeg yourself.
The efficiency is not as fast as I thought. It takes ten pictures for a two-minute video, which takes about 30 seconds.
Installation method:

$page = 10;
$prefix = 'screencap';
 
$mov = new ffmpeg_movie('gt.avi');
$count = $mov->getFrameCount();
$range = (int)round($count/($page+1));
 
for($i=1; $i<=$page; $i++){
$frameNum = $range*$i;
$imgFile = $prefix.'_'.$i.'.png';
 
$frame = $mov->getFrame($frameNum);
If(!$frame){ continue; }
 
$gdImage = $frame->toGDImage();
If(!$gdImage){ continue; }
 
imagepng($gdImage, $imgFile);
imagedestroy($gdImage);
 
echo '
';
}