[FFmpeg-trac] #9653(undetermined:new): mka to mp3 but talk missing

[FFmpeg]

#9653: mka to mp3 but talk missing
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             Reporter:  Monika       |                    Owner:  (none)
  Hoffmann                           |
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Monika Hoffmann):

 I listened to the user2.mka again with "VLC Plus Player".
 In the 10th second he speaks for the first time:
 "Eins, äh vier fünf sechs"
 17th sec: "zehn"
 20th sec: "zehn elf zwölf"
 28th sec: "sechzehn siebzehn achtzehn"
 40th sec: "ok"
 47th sec: "ok und jetzt sage ich tschüss, hörst du mich?"
 53th sec: "alles klar, tschau"

 In MKVToolNix GUI v65.0. - Multiplexer I add user2.mka to the queue and
 enter user2_toolnix.mp3 to the target, then start Multiplexer
 I add the user2_toolnix.mp3

 yes, you are right: They lack the audio sample rate and channel count
 fields in the header.
 We get them like this.

 My job is to write a program (in javaScript/node) to get an mp3 (or m4a)
 from mka and then merge them into one file where they talk to each other.
 Sometimes also with user1.mkv as together.mp4
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Ticket URL: <https://trac.ffmpeg.org/ticket/9653#comment:2>
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