[FFmpeg-trac] #1476(FFmpeg:new): rtp pcm_alaw/pcm_mulaw streaming from ALSA

FFmpeg trac at avcodec.org
Wed Jun 27 14:53:57 CEST 2012

#1476: rtp pcm_alaw/pcm_mulaw streaming from ALSA
             Reporter:  Spideru     |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  important   |                Component:  FFmpeg
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by Spideru):

 I have done several tests, it seems that the problem appears only when
 using an external mic (USB type).
 for example:
 ./ffmpeg -f alsa -ar 8000 -ac 1 -i default -ar 8000 -acodec pcm_alaw -f
 rtp rtp://

 works perfectly (default is internal mic in)

 but this:
 ./ffmpeg -f alsa -ar 8000 -ac 1 -i hw:1,0 -ar 8000 -acodec pcm_alaw -f rtp

 generates a segmentation fault after a minute (hw:1,0 is external USB mic

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1476#comment:3>
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