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

FFmpeg trac at avcodec.org
Wed Apr 18 12:55:57 EEST 2018


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

Comment (by kainz):

 So something abound snd_pcm_wait seems to not be a solution on its own...
 For comparison though, using ffmpeg with the JACK input only ate about
 2-7% CPU for each of jackd and ffmpeg, running jackd in 48000/s16LE mode,
 and using ffmpeg to write a 48000/S16LE PCM wav file.  Still
 investigating...

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Ticket URL: <https://trac.ffmpeg.org/ticket/6156#comment:6>
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