废话不多说了，直接给大家贴代码了，具体代码如下所示：

1. function BigEndian2Int($byte_word, $signed = false) {
2. $int_value = 0;
3. $byte_wordlen = strlen($byte_word);
4. for ($i = 0; $i < $byte_wordlen; $i++) {
5. $int_value += ord($byte_word{$i}) * pow(256, ($byte_wordlen - 1 - $i));
6. }
7. if ($signed) {
8. $sign_mask_bit = 0x80 << (8 * ($byte_wordlen - 1));
9. if ($int_value & $sign_mask_bit) {
10. $int_value = 0 - ($int_value & ($sign_mask_bit - 1));
11. }
12. }
13. return $int_value;
14. }
15. //获得视频的数字时间
16. function getFlvDuration($name){
17. if(!file_exists($name)){
18. return;
19. }
20. $flv_data_length=filesize($name);
21. $fp = @fopen($name, 'r');
22. $flv_header = fread($fp, 5);
23. fseek($fp, 5, SEEK_SET);
24. $frame_size_data_length = $this->BigEndian2Int(fread($fp, 4));
25. $flv_header_frame_length = 9;
26. if ($frame_size_data_length > $flv_header_frame_length) {
27. fseek($fp, $frame_size_data_length - $flv_header_frame_length, SEEK_CUR);
28. }
29. $duration = 0;
30. while ((ftell($fp) + 1) < $flv_data_length) {
31. $this_tag_header = fread($fp, 16);
32. $data_length = $this->BigEndian2Int(substr($this_tag_header, 5, 3));
33. $timestamp = $this->BigEndian2Int(substr($this_tag_header, 8, 3));
34. $next_offset = ftell($fp) - 1 + $data_length;
35. if ($timestamp > $duration) {
36. $duration = $timestamp;
37. }
38. fseek($fp, $next_offset, SEEK_SET);
39. }
40. fclose($fp);
41. return $duration;
42. }
43. //转化为0：03：56的时间格式
44. function getFlvTime($time){
45. $num = $time; //phpfensi.com
46. $sec = intval($num/1000);
47. $h = intval($sec/3600);
48. $m = intval(($sec%3600)/60);
49. $s = intval(($sec%60));
50. $tm = $h.':'.$m.':'.$s;
51. return $tm;
52. }