Bug#896190: ffmpeg convertion from dsf to flac - noisy at the end of file

[Serge Pouliquen]

Package: ffmpeg
Version: 7:3.2.10-1~deb9u1
Severity: normal

Dear Maintainer,


   * What led up to the situation?

I tried to convert dsf file to flac with ffmpeg.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

It looks like there is a noisy part at the end of some flac file.

Steps to reproduce:
1/ download from http://www.lindberg.no/hires/test/2L-125_stereo-11289k-1b_04.dsf.zip
2/ extract archive
3/ run ffmpeg command : ffmpeg -i "2L-125_stereo-11289k-1b_04.dsf" -acodec flac -ar 96000 "2L-125_stereo-11289k-1b_04.flac"
4/ play the flac file or open it with audacity (some flac player are playing a noisy 'clac' at the end of file like deadbeef, some don't)

I'm not sure the bug is from ffmpeg, but probably because two softwares have seen that noise

maybe related :
https://trac.ffmpeg.org/ticket/5488
https://trac.ffmpeg.org/ticket/5489

Regards,
Serge


   * What was the outcome of this action?
no outcome at the moment
   * What outcome did you expect instead?
a proper flac file




-- System Information:
Debian Release: 9.4
  APT prefers stable-updates
  APT policy: (700, 'stable-updates'), (700, 'stable'), (80, 'testing'), (58, 'unstable'), (55, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-6-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages ffmpeg depends on:
ii  libavcodec57    7:3.2.10-1~deb9u1
ii  libavdevice57   7:3.2.10-1~deb9u1
ii  libavfilter6    7:3.2.10-1~deb9u1
ii  libavformat57   7:3.2.10-1~deb9u1
ii  libavresample3  7:3.2.10-1~deb9u1
ii  libavutil55     7:3.2.10-1~deb9u1
ii  libc6           2.24-11+deb9u3
ii  libpostproc54   7:3.2.10-1~deb9u1
ii  libsdl2-2.0-0   2.0.5+dfsg1-2
ii  libswresample2  7:3.2.10-1~deb9u1
ii  libswscale4     7:3.2.10-1~deb9u1
ii  libva1          1.7.3-2

ffmpeg recommends no packages.

Versions of packages ffmpeg suggests:
ii  ffmpeg-doc  7:3.2.10-1~deb9u1

-- no debconf information