[FFmpeg-trac] #10314(ffmpeg:new): FFmpeg concat introduces gaps, even encoding to wav; does not occur with mpg123.

[FFmpeg]

#10314: FFmpeg concat introduces gaps, even encoding to wav; does not occur with
mpg123.
-------------------------------------+-------------------------------------
             Reporter:  Karen        |                     Type:  defect
  Róbertsdóttir                      |
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:  5.0.2
             Keywords:  gaps, mp3,   |               Blocked By:
  wav, mpg123                        |
             Blocking:  Have to use  |  Reproduced by developer:  0
  mpg123 as a workaround; ruined     |
  the timings on my current          |
  project, have to redo.             |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 mpg123 -w out_mpg123.wav 160k_75_80_15-8_v5_B/00015[5678]*

 vs.

 echo -n > list.txt; for i in 160k_75_80_15-8_v5_B/00015[5678]*.mp3; do
 echo "file '$i'" >> list.txt; done; ffmpeg -y -f concat -safe 0 -i
 list.txt -c copy out_ffmpeg.wav

 See the attached waveform to see the gap, and the source files to
 recreate.  My suspicion is that ffmpeg concat is not respecting the stated
 file length, and is instead just writing out whole blocks even if the
 block extends out beyond the end of the file.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10314>
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