bridge between rtmp source

Marco Micheletti marco.micheletti at
Wed Apr 24 09:08:12 PDT 2013

I have a small problem.

  I would like to create a command that allows me to read two RTMP 
stream from a wowza server and send it to another server after swapping 
some traces of the flows.

With ffmpeg I did something like this:

ffmpeg -i rtmp://x.y.z.w/vod/a.flv  -i rtmp://x.y.z.w/vod/b.flv -map 0:0 
-map 1:1 -f flv rtmp://x.y.z.w/application/1

the first attempt with gstreamer is this:

gst-launch-1.0 rtmpsrc location = 'rtmp ://x.y.z.w/vod/aflv' ! rtmpsink 
location = 'rtmp://x.y.z.w/application/1'

But after a few instances a SIGSEGV is generated:

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Caught SIGSEGV accessing address 0x827f000
#0  0xb773c424 in __kernel_vsyscall ()
#1  0xb744b9a6 in poll () from /lib/i686/cmov/
#2  0xb7550d9b in g_poll (fds=0xb6600688, nfds=2, timeout=250) at 
#3  0xb754346c in g_main_context_poll (context=0xb6600488,
#4  g_main_context_iterate (context=0xb6600488, block=<value optimized out>,
#5  0xb754477f in g_main_loop_run (loop=0xb6600588) at gmain.c:3484
#6  0xb7694240 in gst_bus_poll (bus=0x8234180, events=GST_MESSAGE_ANY,
#7  0x0804a925 in event_loop (pipeline=<value optimized out>, blocking=0,
#8  0x0804bec5 in main (argc=6, argv=0xbfccd704) at gst-launch.c:1114
Spinning.  Please run 'gdb gst-launch- 1.0 29050' to continue debugging, 
Ctrl-C to quit, or Ctrl-\ to dump core

The version of gstreamer is 1.0.6.

any ideas?



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