[FFmpeg-trac] #10109(ffmpeg:new): Volume gradually increasing when adding several audios in video

[FFmpeg]

#10109: Volume gradually increasing when adding several audios in video
---------------------------------------+----------------------------------
             Reporter:  gregoryd       |                    Owner:  (none)
                 Type:  defect         |                   Status:  new
             Priority:  normal         |                Component:  ffmpeg
              Version:  4.4.3          |               Resolution:
             Keywords:  audio, volume  |               Blocked By:
             Blocking:                 |  Reproduced by developer:  0
Analyzed by developer:  0              |
---------------------------------------+----------------------------------
Comment (by gregoryd):

 I tried with a different command line with the same result:

 ffmpeg -y -i /var/www/creformav2/temp/_27819.mp4 -i
 /var/www/creformav2/mp3/audioe06bcbdbac8f7fca88e1335693314184.mp3 -i
 /var/www/creformav2/mp3/audiof8478c4bb238c613c7a02814f73e5765.mp3 -i
 /var/www/creformav2/mp3/audiobf857b06c2a3c54c1e7070428411a339.mp3 -i
 /var/www/creformav2/mp3/audioe15c94569039f5f3733cd00663376926.mp3 -i
 /var/www/creformav2/mp3/audio87668a0ef5be875e220e72259ae32d5e.mp3 -i
 /var/www/creformav2/mp3/audio5f4bdad58a85ea13127e6b215e76d325.mp3 -i
 /var/www/creformav2/mp3/audioc1a95ef3b67e9cf6808a99a82d204e4c.mp3 -i
 /var/www/creformav2/mp3/audiod38a5db3379f8f50791110d1707eedb5.mp3 -i
 /var/www/creformav2/mp3/audio464415f13b5b7524ecc62c9e5edcf4fd.mp3
 -filter_complex
 "[1]adelay=221|221[aud1];[2]adelay=10855|10855[aud2];[3]adelay=17436|17436[aud3];[4]adelay=20571|20571[aud4];[5]adelay=29984|29984[aud5];[6]adelay=33698|33698[aud6];[7]adelay=47273|47273[aud7];[8]adelay=56559|56559[aud8];[9]adelay=62950|62950[aud9];[0][aud1][aud2][aud3][aud4][aud5][aud6][aud7][aud8][aud9]amix=10"
 -c:v copy /var/www/creformav2/temp/27819.mp4

 Then the problem seems to be with filter_complex or amix
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10109#comment:1>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker