[FFmpeg-user] Unable to get udp multicast stream

[Lucas da Vila]

I've waited like 15 minutes and stills in the same state

ffmpeg -v 9 -loglevel 99 -re -i "udp://@239.255.0.1:56000"
ffmpeg version N-74369-g55a07cf Copyright (c) 2000-2015 the FFmpeg
developers
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample
--disable-debug --enable-nonfree --enable-gpl --enable-version3
--enable-libopencore-amrnb --enable-libopencore-amrwb
--disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse
--enable-libdcadec --enable-libfreetype --enable-libx264 --enable-libx265
--enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus
--enable-libvpx --enable-libspeex --enable-libass --enable-avisynth
--enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
  libavutil      54. 30.100 / 54. 30.100
  libavcodec     56. 57.100 / 56. 57.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 32.100 /  5. 32.100
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with
argument '9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging
level) with argument '99'.
Reading option '-re' ... matched as option 're' (read input at native frame
rate) with argument '1'.
Reading option '-i' ... matched as input file with argument 'udp://@
239.255.0.1:56000'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input file udp://@239.255.0.1:56000.
Applying option re (read input at native frame rate) with argument 1.
Successfully parsed a group of options.
Opening an input file: udp://@239.255.0.1:56000.
[udp @ 0x2b6bc00] end receive buffer size reported is 131072

When I hit ctrl-c appear this line
[AVIOContext @ 0x2134100] Statistics: 0 bytes read, 0 seeks
udp://239.255.0.1:56000: Immediate exit requested
Exiting normally, received signal 2.


Maybe tomorrow I will be able to test on my own computer with vlc.
Over ssh the only thing I can do is this, really don't know if it helps
cvlc udp://239.255.0.7:1002
VLC media player 2.1.6 Rincewind (revision 2.1.6-0-gea01d28)
[0x1118238] main interface error: no suitable interface module
[0x1052118] main libvlc error: interface "globalhotkeys,none"
initialization failed
[0x1118238] dbus interface error: Failed to connect to the D-Bus session
daemon: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
[0x1118238] main interface error: no suitable interface module
[0x1052118] main libvlc error: interface "dbus,none" initialization failed
[0x1117b38] dummy interface: using the dummy interface module...
^C[0x7f22b0001998] main stream error: cannot pre fill buffer


mplayer udp://239.255.0.7:1002
MPlayer SVN-r37401 (C) 2000-2012 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote
control.

Playing udp://239.255.0.7:1002.
STREAM_UDP, URL: udp://239.255.0.7:1002
Failed to connect to server
udp_streaming_start failed
No stream found to handle url udp://239.255.0.7:1002


Exiting... (End of file)

Thanks for the advice with aac :)
Lucas


On Wed, Aug 19, 2015 at 3:07 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Lucas da Vila <lucas8666 <at> gmail.com> writes:
>
> > ffmpeg -v 9 -loglevel 99 -re -i "udp:// <at> 239.255.0.1:56000"
>
> What happens if you just specify the above (and wait)?
> Which application does work? (vlc, MPlayer?)
>
> > -c:v copy -c:a:0 libvo_aacenc
>
> This is the worst of several existing aac encoders,
> please don't use it.
>
> Carl Eugen
>
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>