本文实例讲述了php使用ffmpeg获取视频信息并截图的方法。分享给大家供大家参考，具体如下：
$movie = new ffmpeg_movie('4.mp4');$width=$movie->getframewidth();$height=$movie->getframeheight();$count= $movie->getframecount();print $count . '';$n = round ( $count/16 );print $n . '';for ( $i = 1; $i getframe($x); $gd_image = $f->togdimage(); imagepng($gd_image, $img); imagedestroy($gd_image); echo \n;}$extension = ffmpeg;$extension_soname = $extension . . . php_shlib_suffix;$extension_fullname = php_extension_dir . / . $extension_soname;// load extensionif (!extension_loaded($extension)) { dl($extension_soname) or die(can't load extension $extension_fullname\n);}if (php_sapi_name() != 'cli') { echo '';}printf(ffmpeg-php version string: %s\n, ffmpeg_php_version_string);printf(ffmpeg-php build date string: %s\n, ffmpeg_php_build_date_string);printf(libavcodec build number: %d\n, libavcodec_build_number);printf(libavcodec version number: %d\n, libavcodec_version_number);print_class_methods(ffmpeg_movie);print_class_methods(ffmpeg_frame);// get an array for movies from the test media directory$movies = getdirfiles(dirname(__file__) . '/tests/test_media');echo --------------------\n\n;foreach($movies as $movie) { $mov = new ffmpeg_movie($movie); printf(file name = %s\n, $mov->getfilename()); printf(duration = %s seconds\n, $mov->getduration()); printf(frame count = %s\n, $mov->getframecount()); printf(frame rate = %0.3f fps\n, $mov->getframerate()); printf(comment = %s\n, $mov->getcomment()); printf(title = %s\n, $mov->gettitle()); printf(author = %s\n, $mov->getauthor()); printf(copyright = %s\n, $mov->getcopyright()); printf(get bit rate = %d\n, $mov->getbitrate()); printf(has audio = %s\n, $mov->hasaudio() == 0 ? 'no' : 'yes'); if ($mov->hasaudio()) { printf(get audio stream id= %s\n, $mov->getaudiostreamid()); printf(get audio codec = %s\n, $mov->getaudiocodec()); printf(get audio bit rate = %d\n, $mov->getaudiobitrate()); printf(get audio sample rate = %d \n, $mov->getaudiosamplerate()); printf(get audio channels = %s\n, $mov->getaudiochannels()); } printf(has video = %s\n, $mov->hasvideo() == 0 ? 'no' : 'yes'); if ($mov->hasvideo()) { printf(frame height = %d pixels\n, $mov->getframeheight()); printf(frame width = %d pixels\n, $mov->getframewidth()); printf(get video stream id= %s\n, $mov->getvideostreamid()); printf(get video codec = %s\n, $mov->getvideocodec()); printf(get video bit rate = %d\n, $mov->getvideobitrate()); printf(get pixel format = %s\n, $mov->getpixelformat()); printf(get pixel aspect ratio = %s\n, $mov->getpixelaspectratio()); $frame = $mov->getframe(10); printf(get frame = %s\n, is_object($frame) ? 'true' : 'false'); printf( get frame number = %d\n, $mov->getframenumber()); printf( get frame width = %d\n, $frame->getwidth()); printf( get frame height = %d\n, $frame->getheight()); } echo \n--------------------\n\n;}if (php_sapi_name() != 'cli') { echo '';}/* functions */function print_class_methods($class) { echo \nmethods available in class '$class':\n; $methods = get_class_methods($class); if (is_array($methods)) { foreach($methods as $method) { echo $method . \n; } } else { echo no methods defined\n; }}function getdirfiles($dirpath){ if ($handle = opendir($dirpath)) { while (false !== ($file = readdir($handle))) { $fullpath = $dirpath . '/' . $file; if (!is_dir($fullpath) && $file != cvs && $file != . && $file != ..) $filesarr[] = trim($fullpath); } closedir($handle); } return $filesarr;}?>
运行效果如下图所示：
更多关于php相关内容感兴趣的读者可查看本站专题：《php图形与图片操作技巧汇总》、《php操作office文档技巧总结(包括word,excel,access,ppt)》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家php程序设计有所帮助。