[FFmpeg-trac] #2748(undetermined:open): Inconsistent UDP output packet size

FFmpeg trac at avcodec.org
Fri May 23 19:46:15 CEST 2014


#2748: Inconsistent UDP output packet size
-------------------------------------+-------------------------------------
             Reporter:  lancey       |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  mpegts udp   |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by caseynielson):

 Not fixed, ffmpeg continues to produce packets of inconsistent length.

 Used the following command line:
 ffmpeg -i
 'udp://232.70.2.11:1234?source=172.31.22.135&fifo_size=1000000&overrun_nonfatal=1'
 -acodec copy -vcodec copy -f mpegts udp://232.70.33.1:1234?pkt_size=1316

 Built from source today.
 ffmpeg version git-2014-05-23-6a4832c Copyright (c) 2000-2014 the FFmpeg
 developers
   built on May 23 2014 11:12:03 with gcc 4.6 (Ubuntu/Linaro
 4.6.3-1ubuntu5)
   configuration: --prefix=/home/caseyn/src --extra-
 cflags=-I/home/caseyn/src/include --extra-ldflags=-L/home/caseyn/src/lib
 --bindir=/usr/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-
 libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
   libavutil      52. 86.100 / 52. 86.100
   libavcodec     55. 63.100 / 55. 63.100
   libavformat    55. 40.100 / 55. 40.100
   libavdevice    55. 13.101 / 55. 13.101
   libavfilter     4.  5.100 /  4.  5.100
   libswscale      2.  6.100 /  2.  6.100
   libswresample   0. 19.100 /  0. 19.100
   libpostproc    52.  3.100 / 52.  3.100


 11:41:14.306157 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 1316
 11:41:14.306162 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 376
 11:41:14.309895 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 1316
 11:41:14.309908 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 1316
 11:41:14.309916 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 564
 11:41:14.317978 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 1316
 11:41:14.317991 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 1316
 11:41:14.317999 IP 172.31.35.47.43299 > 232.70.33.1.1234: UDP, length 188

--
Ticket URL: <https://trac.ffmpeg.org/ticket/2748#comment:13>
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