废话不多说了，直接给大家贴代码了，具体代码如下所示：

function BigEndian2Int($byte_word, $signed = false) {

$int_value = 0;

$byte_wordlen = strlen($byte_word);

for ($i = 0; $i < $byte_wordlen; $i++) {

$int_value += ord($byte_word{$i}) * pow(256, ($byte_wordlen - 1 - $i));

}

if ($signed) {

$sign_mask_bit = 0x80 << (8 * ($byte_wordlen - 1));

if ($int_value & $sign_mask_bit) {

$int_value = 0 - ($int_value & ($sign_mask_bit - 1));

}

}

return $int_value;

}

//获得视频的数字时间

function getFlvDuration($name){

if(!file_exists($name)){

return;

}

$flv_data_length=filesize($name);

$fp = @fopen($name, 'r');

$flv_header = fread($fp, 5);

fseek($fp, 5, SEEK_SET);

$frame_size_data_length = $this->BigEndian2Int(fread($fp, 4));

$flv_header_frame_length = 9;

if ($frame_size_data_length > $flv_header_frame_length) {

fseek($fp, $frame_size_data_length - $flv_header_frame_length, SEEK_CUR);

}

$duration = 0;

while ((ftell($fp) + 1) < $flv_data_length) {

$this_tag_header = fread($fp, 16);

$data_length = $this->BigEndian2Int(substr($this_tag_header, 5, 3));

$timestamp = $this->BigEndian2Int(substr($this_tag_header, 8, 3));

$next_offset = ftell($fp) - 1 + $data_length;

if ($timestamp > $duration) {

$duration = $timestamp;

}

fseek($fp, $next_offset, SEEK_SET);

}

fclose($fp);

return $duration;

}

//转化为0：03：56的时间格式

function getFlvTime($time){

$num = $time;

$sec = intval($num/1000);

$h = intval($sec/3600);

$m = intval(($sec%3600)/60);

$s = intval(($sec%60));

$tm = $h.':'.$m.':'.$s;

return $tm;

}

总结

以上所述是小编给大家介绍的利用php获得flv视频长度的实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！