[FFmpeg-trac] #3779(undetermined:new): speex "Unable to parse option value "(null)" as sample format"

[FFmpeg]

#3779: speex "Unable to parse option value "(null)" as sample format"
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             Reporter:  ghazel       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Changes (by Timothy_Gu):

 * version:  2.2.4 => git-master


Comment:

 You should use `-acodec libmp3lame` because we don't have an encoder
 `mp3`, but this is a bug nevertheless.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3779#comment:1>
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