[FFmpeg-trac] #6156(avdevice:reopened): Issue with FFMPEG ALSA CPU usage

FFmpeg trac at avcodec.org
Fri Jul 5 10:14:34 EEST 2019

#6156: Issue with FFMPEG ALSA CPU usage
             Reporter:  mushm0m     |                    Owner:
                 Type:  defect      |                   Status:  reopened
             Priority:  normal      |                Component:  avdevice
              Version:  git-master  |               Resolution:
             Keywords:  alsa        |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by StudentSA):

 Hi Cehoyos,

 I am experiencing the same issue on a normal Ubuntu 18 install when
 capturing from an ALSA capture device. I have multiple MIC inputs and for
 each FFMPEG process it consumes 100% CPU using the latest FFMpeg 4 build.
 where as arecord consumes less than 5% per process.

 Could I request if it would be possible to add a small bounty towards
 finding a solution to this bug? If so please advise which platform.

Ticket URL: <https://trac.ffmpeg.org/ticket/6156#comment:14>
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