[FFmpeg-trac] #1023(undetermined:new): High frequency audio

[FFmpeg]

#1023: High frequency audio
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             Reporter:  ryback3      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 I'm trying to join an audio file to video file, this audio file test.m4a
 has some high frequency audio(15000hz) when i join this sound with command
 :

 ffmpeg -i video.mp4 -i test.m4a -vcodec copy -acodec copy  output.mp4

 it mixes audio and video successfully but it removes high frequency audios
 in this audio, i can get other audio but cannot get high frequency audio.
 Audio file has sample rate 44100hz

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1023>
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