合并文件 出错

[nsdown]

用youku.py下载视频后，文件不能合并，将文件重命名后，尝试手动合并，依然报错

[root@www youku-lixian]# python flv_join.py 0.flv 1.flv 2.flv
Joining 0.flv, 1.flv, 2.flv into output.flv
Traceback (most recent call last):
File "flv_join.py", line 365, in
main()
File "flv_join.py", line 362, in main
concat_flvs(args, output)
File "flv_join.py", line 306, in concat_flvs
read_flv_header(stream)
File "flv_join.py", line 247, in read_flv_header
assert type_flags == 5
AssertionError
[root@www youku-lixian]#