[Python-modules-team] Bug#822859: python-rgain: crash after upgrade gstreamer from 1.6.3-1 -> 1.8.1-1

[Samuele Battarra]

Package: python-rgain
Version: 1.3.3-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,

After upgrading gstreamer from 1.6.3-1 -> 1.8.1-1 replaygain stop working.

It give this message:

Error while calculating gain - GST error: Your GStreamer installation is missing a plug-in. (gstdecodebin2.c(4565): gst_decode_bin_expose (): /GstPipeline:pipeline0/GstDecodeBin:decbin:
no suitable plugins found:
Missing decoder: MPEG-1 Layer 3 (MP3) (audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3, rate=(int)44100, channels=(int)2, parsed=(boolean)true)

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (900, 'testing'), (500, 'stable-updates'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.5.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages python-rgain depends on:
ii  gir1.2-gstreamer-1.0       1.8.1-1
ii  gstreamer1.0-plugins-base  1.8.1-1
ii  gstreamer1.0-plugins-good  1.8.1-1
ii  python                     2.7.11-1
ii  python-gi                  3.20.0-2
ii  python-mutagen             1.31-1

Versions of packages python-rgain recommends:
ii  gstreamer1.0-plugins-bad  1.8.0-1+b1

python-rgain suggests no packages.

-- no debconf information