[FFmpeg-user] Issue with streaming mp3 to RTMP issue

[Suman Poluri]

Hi All,

I am facing an issue when trying to stream an mp3 audio file to an RTMP
server.

In one terminal window, I am using this command:
$ ffmpeg -re -i input_file.mp3 -c copy -f mp3
rtmp://xxx.xxx.x.xxx/live/mystream

This is the output:
ffmpeg version git-2013-11-22-ffe31c6 Copyright (c) 2000-2013 the FFmpeg
developers
  built on Nov 22 2013 23:20:36 with gcc 4.8 (Ubuntu/Linaro 4.8.1-10ubuntu8)
  configuration: --prefix=/home/subuntu/ffmpeg/ffmpeg_build
--extra-cflags=-I/home/subuntu/ffmpeg/ffmpeg_build/include
--extra-ldflags=-L/home/subuntu/ffmpeg/ffmpeg_build/lib
--bindir=/home/subuntu/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
--enable-x11grab
  libavutil      52. 54.100 / 52. 54.100
  libavcodec     55. 44.100 / 55. 44.100
  libavformat    55. 21.101 / 55. 21.101
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 91.100 /  3. 91.100
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mp3, from 'Downloads/Tor - Aperture.mp3':
  Metadata:
    title           : Aperture
    artist          : Tor
    album           : Drum Therapy
    track           : 5
  Duration: 00:04:03.67, start: 0.000000, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
Output #0, mp3, to 'rtmp://xxx.xxx.x.xxx/live/mystream':
  Metadata:
    TIT2            : Aperture
    TPE1            : Tor
    TALB            : Drum Therapy
    TRCK            : 5
    TSSE            : Lavf55.21.101
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help

In another terminal window, I try to play the RTMP stream using ffplay:
$ ffplay -i rtmp://ec2-54-196-52-189.compute-1.amazonaws.com/live/mystream

This is the output:
ffplay version git-2013-11-22-ffe31c6 Copyright (c) 2003-2013 the FFmpeg
developers
  built on Nov 22 2013 23:20:36 with gcc 4.8 (Ubuntu/Linaro 4.8.1-10ubuntu8)
  configuration: --prefix=/home/subuntu/ffmpeg/ffmpeg_build
--extra-cflags=-I/home/subuntu/ffmpeg/ffmpeg_build/include
--extra-ldflags=-L/home/subuntu/ffmpeg/ffmpeg_build/lib
--bindir=/home/subuntu/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
--enable-x11grab
  libavutil      52. 54.100 / 52. 54.100
  libavcodec     55. 44.100 / 55. 44.100
  libavformat    55. 21.101 / 55. 21.101
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 91.100 /  3. 91.100
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
[rtmp @ 0xb0e00bc0] Server error: Failed to play mystream; stream not found.
rtmp://ec2-54-196-52-189.compute-1.amazonaws.com/live/mystream: Operation
not permitted
    nan    :  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

I am unable to fathom why I am getting the errors "stream not found" and
"Operation not permitted".

Just to compare, I replaced my ffmpeg command  in the first terminal to
output an 'flv' stream like this:
$ ffmpeg -re -i input_file.mp3 -c copy -f flv
rtmp://xxx.xxx.x.xxx/live/mystream

This works beautifully when I play it using the ffplay command in the other
terminal. Can someone tell me why the mp3 stream is causing the "stream not
found" and "Operation not permitted" errors?

Thanks,
SP