[Libav-user] mp3 live stream to stdout

[pablo platt]

Tested with ffmpeg.static.32bit.2013-06-14.tar.gz from
http://ffmpeg.gusari.org/static/ under ubuntu 12.04 32bit.

I'm using rtmplite with the test client.
test:~/rtmplite$ python rtmp.py -d

I'm Using the textClient that comes with rtmplite to create a
video+audio stream:
test:~/rtmplite/testClient/bin-debug$ python -m SimpleHTTPServer

I open the testClient example with Firefox in
http://localhost:8000/testClient.html

Result:
./ffmpeg -loglevel debug -i rtmp://127.0.0.1/audio/test -f mp3 pipe:1
ffmpeg version N-54023-g6fe419b Copyright (c) 2000-2013 the FFmpeg developers
  built on Jun 14 2013 05:12:40 with gcc 4.6 (Debian 4.6.3-1)
  configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32
--extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static'
--extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static'
--extra-libs='-lxml2 -lexpat -lfreetype' --enable-static
--disable-shared --disable-ffserver --disable-doc --enable-bzlib
--enable-zlib --enable-postproc --enable-runtime-cpudetect
--enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis
--enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype
--enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-version3 --enable-libvpx
  libavutil      52. 35.101 / 52. 35.101
  libavcodec     55. 16.100 / 55. 16.100
  libavformat    55.  8.102 / 55.  8.102
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 77.101 /  3. 77.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set
logging level) with argument 'debug'.
Reading option '-i' ... matched as input file with argument
'rtmp://127.0.0.1/audio/test'.
Reading option '-f' ... matched as option 'f' (force format) with
argument 'mp3'.
Reading option 'pipe:1' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input file rtmp://127.0.0.1/audio/test.
Successfully parsed a group of options.
Opening an input file: rtmp://127.0.0.1/audio/test.
[rtmp @ 0xa8a7460] Handshaking...
[rtmp @ 0xa8a7460] Type answer 3
[rtmp @ 0xa8a7460] Server version 1.2.3.4
[rtmp @ 0xa8a7460] Proto = rtmp, path = /audio/test, app = audio, fname = test
[rtmp @ 0xa8a7460] Server bandwidth = 1073741824
[rtmp @ 0xa8a7460] Creating stream...
[rtmp @ 0xa8a7460] Sending play command for 'test'
[rtmp @ 0xa8a7460] New incoming chunk size = 4096



On Sun, Jun 23, 2013 at 8:31 PM, Paul B Mahol <onemda at gmail.com> wrote:

> On 6/23/13, pablo platt <pablo.platt at gmail.com> wrote:
> > I'm using static builds from:
> > http://ffmpeg.gusari.org/static/
> >
> > I've tried:
> > ./ffmpeg -loglevel debug -i rtmp://127.0.0.1/audio/test -f mp3 -
> > and
> > ./ffmpeg -loglevel debug -i rtmp://127.0.0.1/audio/test -f mp3 pipe:1
> >
> > I don't see anything in the shell
>
> Really? Paste full uncut console output.
>
> >
> >
> > On Sun, Jun 23, 2013 at 3:57 AM, pablo platt <pablo.platt at gmail.com>
> wrote:
> >
> >> Sorry but the mailing list is called libav.
> >> How can I install ffmpeg on ubuntu 12.04 and above?
> >>
> >>
> >> On Sun, Jun 23, 2013 at 3:42 AM, Paul B Mahol <onemda at gmail.com> wrote:
> >>
> >>> On 6/23/13, pablo platt <pablo.platt at gmail.com> wrote:
> >>> > Hi,
> >>> >
> >>> > I'm trying to transcode a live RTMP stream to mp3.
> >>> > I can't make avconv write the output to stdout.
> >>> >
> >>> > I was trying:
> >>> > avconv -i rtmp://127.0.0.1/audio/test -f mp3 -
> >>> > and
> >>> > avconv -i rtmp://127.0.0.1/audio/test -f mp3 pipe:1
> >>> >
> >>> > But all I'm getting is a message that the speex header is missing.
> >>> > When I'm stopping the RTMP server I see some more message but not
> >>> getting
> >>> > mp3 packets.
> >>> >
> >>> > I'm using ubuntu 12.04 64bit with the libav-tools deb package.
> >>> > For testing I'm using the python rtmp server
> >>> > http://code.google.com/p/rtmplite/
> >>> >
> >>> > How can I make the output go to stdout?
> >>>
> >>> You are asking for help on ffmpeg mailing list for avconv
> >>> which is from libav (ffmpeg fork).
> >>>
> >>> If you want help for avconv don't ask here as this is
> >>> mailing list for ffmpeg only (real ffmpeg not fake one).
> >>> _______________________________________________
> >>> Libav-user mailing list
> >>> Libav-user at ffmpeg.org
> >>> http://ffmpeg.org/mailman/listinfo/libav-user
> >>>
> >>
> >>
> >
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user
>
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