[Live-devel] playSIP and stdout file not readable

[Plischke, Markus]

Hi Ross,

thanks for you incredible fast answer:

ffmpeg -i test.alaw -acodec pcm_alaw -ar 8000 -ac 1 bla.mp3
ffmpeg version 1.0.8 Copyright (c) 2000-2013 the FFmpeg developers
  built on Dec 30 2013 15:28:54 with gcc 4.7.3 (Gentoo 4.7.3-r1 p1.4, pie-0.5.5)
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-march=corei7 -O2 -pipe' --extra-cflags='-march=corei7 -O2 -pipe' --extra-cxxflags='-march=corei7 -O2 -pipe' --disable-static --enable-gpl --enable-postproc --enable-avfilter --enable-avresample --disable-stripping --disable-debug --disable-doc --disable-vaapi --disable-vdpau --disable-ffplay --enable-libmp3lame --enable-libtheora --disable-indev=v4l2 --disable-indev=alsa --disable-indev=oss --disable-indev=jack --disable-outdev=alsa --disable-outdev=oss --disable-outdev=sdl --enable-libvorbis --disable-amd3dnow --disable-amd3dnowext --disable-altivec --disable-avx --disable-mmxext --disable-vis --disable-neon --cpu=corei7 --enable-hardcoded-tables
  libavutil      51. 73.101 / 51. 73.101
  libavcodec     54. 59.100 / 54. 59.100
  libavformat    54. 29.104 / 54. 29.104
  libavdevice    54.  2.101 / 54.  2.101
  libavfilter     3. 17.100 /  3. 17.100
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
test.alaw: Invalid data found when processing input

Changed nothing, for example VLC also cant play the file, and vlc can play everything.

Von: live-devel-bounces at ns.live555.com [mailto:live-devel-bounces at ns.live555.com] Im Auftrag von Ross Finlayson
Gesendet: Dienstag, 31. Dezember 2013 09:46
An: LIVE555 Streaming Media - development & use
Betreff: Re: [Live-devel] playSIP and stdout file not readable

You appear to be receiving the audio correctly, so I suspect your problem is simply that you are not decoding it properly.

The data in your file ("test.alaw") should be PCM a-law audio, 1 channel, with a sampling frequency of 8000 Hz.  You probably need to tell "ffmpeg" explicitly what kind of data this is; it probably won't be able to 'guess' the data type otherwise.

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/

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