[FFmpeg-trac] #6523(undetermined:new): FFMpeg3 slow audio encoding

FFmpeg trac at avcodec.org
Wed Jul 12 10:08:13 EEST 2017

#6523: FFMpeg3 slow audio encoding
             Reporter:  antony007    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  3.1.7
  undetermined                       |               Blocked By:
             Keywords:  ffmpeg3      |  Reproduced by developer:  0
  audio encoding                     |
             Blocking:               |
Analyzed by developer:  0            |
 Audio encoding from wav to aac is very slow in the ffmpeg3. Earlier it
 used to be fast in ffmpeg2. After upgrading to ffmpeg3 the encoding
 process is taking thrice the time.

 Following is the command that I am using.

 ffmpeg -i L.wav -i R.wav -i C.wav -i LFE.wav -i Ls.wav -i Rs.wav
 -filter_complex "[0:a][1:a][2:a][3:a][4:a][5:a] amerge=inputs=6[aout]"
 -map "[aout]" -b:a 640k -y test1.aac

Ticket URL: <https://trac.ffmpeg.org/ticket/6523>
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