Hey all,
Has anyone extracted h264 data from a wireshark RTP capture?
Essentially what I have tried is to capture an h323 session and to extract
one of the H264 RTP streams using "Follow UDP Stream" and then saving the
sessions as a raw file. Then I took the SDP for the session and attempted
to run it through ffmpeg:
$ cat polycom.sdp
v=0
o=- 1351021842 1 IN IP4 10.101.21.75
t=0 0
c=IN IP4 10.22.1.59
m=video 5002 RTP/AVP 109
a=rtpmap:109 H264/90000
a=fmtp:109
packetization-mode=1;max-fs=9216;max-mbps=276480;profile-level-id=42801e
$ ffmpeg -f rtp -i polycom.sdp -i polycom.rtp polycom_rtp.h264
FFmpeg version git-2d162e3, Copyright (c) 2000-2011 the FFmpeg developers
built on Apr 4 2012 11:34:44 with gcc 4.4.3
configuration: --enable-gpl --enable-libx264
/usr/include --enable-shared --enable-pic
libavutil 50. 36. 0 / 50. 36. 0
libavcore 0. 16. 1 / 0. 16. 1
libavcodec 52.108. 0 / 52.108. 0
libavformat 52. 94. 0 / 52. 94. 0
libavdevice 52. 2. 3 / 52. 2. 3
libavfilter 1. 74. 0 / 1. 74. 0
libswscale 0. 12. 0 / 0. 12. 0
[rtp @ 0x174d510] Unsupported RTP version packet received
[rtp @ 0x174d510] Received too short packet
^C Last message repeated 85803 times
I get this unsupported message. Is what I'm trying to do possible?
Thanks,
JD
