[FFmpeg-trac] #10831(undetermined:new): ffmpeg concat generates several issues in output file

[FFmpeg]

#10831: ffmpeg concat generates several issues in output file
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             Reporter:               |                    Owner:  (none)
  CharismaticMegafauna               |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  6.1          |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Description changed by CharismaticMegafauna:

Old description:

> Summary of the bug:
> Using ffmpeg concat demuxer as described in
> https://trac.ffmpeg.org/wiki/Concatenate results in multiple issues in
> the output file when applied to wav files including overly long file
> length and intermittent noise.
>
> How to reproduce:
> {{{
> % ffmpeg -report -f concat -safe 0 -i tracklist.txt -c copy concat.wav
> ffmpeg version 6.1.1 obtained from the arch linux repositories as
> 2-6.1.1-3
> https://gitlab.archlinux.org/archlinux/packaging/packages/ffmpeg/-/commits/main
> }}}
>
> Links to files involved are below. I attempted to use the uploader at
> https://streams.videolan.org/upload/ , but I was unable to figure out how
> to get links for my file uploads that I would be able to share here.
> Instead, they are hosted on my nextcloud server.
> tracklist.txt https://nextcloud.gooberweb.xyz/s/Nfmp2792yYWTq8B
> ffmpeg-20240128-151906.log
> https://nextcloud.gooberweb.xyz/s/gzktofpgtA9HFoY
> output file with issues, concat.wav
> https://nextcloud.gooberweb.xyz/s/aBc8B6a4DXBrzmG
>
> The input files are music made by someone other than myself, but they
> upload them publicly for free download here
> https://cewlmine.bandcamp.com/album/shobomb so I feel they would not mind
> my sharing of the files which were used as the input, which I have
> uploaded here https://nextcloud.gooberweb.xyz/s/S2f8JMokwnrqEf9 .

New description:

 Summary of the bug:
 Using ffmpeg concat demuxer as described in
 https://trac.ffmpeg.org/wiki/Concatenate results in multiple issues in the
 output file when applied to wav files including overly long file length
 and intermittent noise.

 How to reproduce:
 {{{
 % ffmpeg -report -f concat -safe 0 -i tracklist.txt -c copy concat.wav
 ffmpeg version 6.1.1 obtained from the arch linux repositories as
 2-6.1.1-3
 https://gitlab.archlinux.org/archlinux/packaging/packages/ffmpeg/-/commits/main
 }}}

 Links to files involved are below. I attempted to use the uploader at
 https://streams.videolan.org/upload/ , but I was unable to figure out how
 to get links for my file uploads that I would be able to share here.
 Instead, they are hosted on my nextcloud server.
 tracklist.txt attached below
 ffmpeg-20240128-151906.log
 https://nextcloud.gooberweb.xyz/s/gzktofpgtA9HFoY
 output file with issues, concat.wav
 https://nextcloud.gooberweb.xyz/s/aBc8B6a4DXBrzmG

 The input files are music made by someone other than myself, but they
 upload them publicly for free download here
 https://cewlmine.bandcamp.com/album/shobomb so I feel they would not mind
 my sharing of the files which were used as the input, which I have
 uploaded here https://nextcloud.gooberweb.xyz/s/S2f8JMokwnrqEf9 .

 I believe this bug to be caused by the input wav files, as I have had the
 same command operate successfully when different files populated
 tracklist.txt on the same machine.

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Ticket URL: <https://trac.ffmpeg.org/ticket/10831#comment:1>
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