[FFmpeg-trac] #11314(avformat:new): "alsa" capturing with "-c:a copy" had audio stuttering in AVI

[FFmpeg]

#11314: "alsa" capturing with "-c:a copy" had audio stuttering in AVI
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             Reporter:  chconnor  |                    Owner:  (none)
                 Type:  defect    |                   Status:  new
             Priority:  normal    |                Component:  avformat
              Version:  7.0       |               Resolution:
             Keywords:  avi       |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  1         |
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Comment (by chconnor):

 Yeah I can't try the asetpts with -c:a copy. When I specify -c:a
 pcm_s16le, then using asetpts will generate a working file (with non-
 monotonic errors and rational-seeming pts in the ashowinfo), but as tested
 above, specifying pcm_s16le alone also generates a working file so I'm not
 sure if that generated any useful info?:

 {{{
 ffmpeg -f alsa -ac 2 -i hw:CARD=Cx231xxAudio,DEV=0 -c:a pcm_s16le -af
 "asetpts=PTS-STARTPTS" test-asetpts.avi
 }}}

 (Let me know if there is a smarter way to try asetpts without specifying
 -c:a pcm_s16le or -ar 48000, etc.)

 Thanks for working on this.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11314#comment:11>
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