Failed to update header with correct duration.e=00:00:08.28 bitrate= 313.2kbits/s
[flv @ 0x23d60a0] Failed to update header with correct filesize.
frame=  183 fps= 21 q=-1.0 Lsize=     341kB time=00:00:08.54 bitrate= 327.0kbits/s
video:148kB audio:184kB subtitle:0 global headers:0kB muxing overhead 2.734535%