[FFmpeg-trac] #1980(undetermined:new): ffmpeg process hangs with 100% CPU when getting a live rtsp stream (on redhat linux)

[FFmpeg]

#1980: ffmpeg process hangs with 100% CPU when getting a live rtsp stream (on
redhat linux)
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             Reporter:  muthuk  |                    Owner:
                 Type:  defect  |                   Status:  new
             Priority:  normal  |                Component:  undetermined
              Version:  1.0     |               Resolution:
             Keywords:  rtsp    |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
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Comment (by cehoyos):

 Replying to [comment:4 muthuk]:
 > Replying to [comment:3 cehoyos]:
 > > Since no developer is able to reproduce the problem (because of your
 rtsp address), a backtrace is necessary.
 > > Please run "$ gdb ffmpeg_g", then "r -i rtsp... " and when ffmpeg
 hangs, you interrupt it with Ctrl-C and type "bt" to get a backtrace,
 please post it here.
 >
 > I actually run/launch these from a perl script (launches 25 instances
 every ~6 minutes) and they fail at random (after 15-20 minutes or so). I
 don't think launching each invocation in gdb is feasible. I realize
 however that i can attach to an ffmpeg process & take a backtrace (cmd-
 line attach).

 I have never done it myself but this sounds like a good idea.

 > Also please let me know how to build ffmpeg with debug enabled.

 $ ./configure && make ;-)
 Your configure line produces two executables, ffmpeg_g contains debug
 symbols, I suspect --disable-stripping leaves the symbols also in ffmpeg.
 (I only realize now you are using --disable-yasm. This is actually a good
 idea for debugging, but don't forget to remove it in the future, it hurts
 performance.)

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1980#comment:5>
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