take a snapshot of a video using ffmpeg

you can use ffmpeg to take the snapshot of a video using ffmpeg. following code block will show you how to do this.

function makethumbnail()
    {
        //this is the path of the video that you want to take snapshot
        $video  = $this->baseDir."/".$this->video_name;
        // where you'll save the image
        JFolder::Create($this->baseDir."/images");
        // after how many second you want to take the snapshot
        $second= $this->image_duration;
        //this the duration of the video
        $duration = $this->getDuration();
      
        $no_of_image = intval($duration /$second);

        for($i=1; $i<=$no_of_image; $i++)
        {
            $image  = $this->baseDir."/images/".$i.'.jpg';

            $cmd = "$this->ffmpeg -i $video -deinterlace -an -ss $second -t 00:00:01 -r 1 -y -vcodec mjpeg -f mjpeg $image 2>&1";
            $return = `$cmd`;
            $second += $this->image_duration;
        }
    }

these lines of code will take the snapshot after a particular time