[FFmpeg-trac] #5266(undetermined:new): Incorrect sdp file format and rtp timestamps when sending multicast streams

FFmpeg trac at avcodec.org
Wed Feb 24 18:39:52 CET 2016


#5266: Incorrect sdp file format and rtp timestamps when sending multicast streams
-------------------------------------+-------------------------------------
             Reporter:  sampsa       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  rtp          |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by sampsa):

 {{{
 ffmpeg -y -f alsa -i default -f mulaw -ar 8k -ac 1 -f rtp
 rtp://224.168.1.33:50300
 }}}

 {{{
 ffmpeg version N-78646-g10fa50c Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
   configuration: --pkg-config-flags=--static --enable-gpl --enable-libass
 --enable-libfreetype --enable-libx264 --enable-libpulse --enable-nonfree
   libavutil      55. 19.100 / 55. 19.100
   libavcodec     57. 24.106 / 57. 24.106
   libavformat    57. 26.100 / 57. 26.100
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 35.100 /  6. 35.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, alsa, from 'default':
   Duration: N/A, start: 1456335505.025326, bitrate: 1536 kb/s
     Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
 Output #0, rtp, to 'rtp://224.168.1.33:50300':
   Metadata:
     encoder         : Lavf57.26.100
     Stream #0:0: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
     Metadata:
       encoder         : Lavc57.24.106 pcm_mulaw
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_mulaw (native))
 SDP:
 v=0
 o=- 0 0 IN IP4 127.0.0.1
 s=No Name
 c=IN IP4 224.168.1.33
 t=0 0
 a=tool:libavformat 57.26.100
 m=audio 50300 RTP/AVP 0
 b=AS:64

 Press [q] to stop, [?] for help
 size=      49kB time=00:00:02.82 bitrate= 141.9kbits/s speed=   1x
 video:0kB audio:22kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 121.660538%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5266#comment:2>
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