[Bug 776413] New: flacenc: Wrong quality levels in GStreamer, level 9 doesn't exist in

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=776413

            Bug ID: 776413
           Summary: flacenc: Wrong quality levels in GStreamer, level 9
                    doesn't exist in
    Classification: Platform
           Product: GStreamer
           Version: 1.10.x
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: gnome at genodeftest.de
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

According to libflac [1], there are 9 compression levels, 0…8.

GstFlacEncQuality (values for the "quality" property in GstFlacEnc) has 10
compression levels, 0…9.

When trying to encode to FLAC through API with quality set to 9, I'm getting
this GError:

GLib.Error: gst-library-error-quark: Die Unterstützungsbibliothek konnte nicht
initialisiert werden. (3)

plus this debug message:

gstflacenc.c(872): gst_flac_enc_set_format ():
/GstPipeline:pipeline0/GstFlacEnc:flacenc0:
could not initialize encoder (wrong parameters?) 11


Steps to reproduce:
1. run:
$ gst-launch-1.0 filesrc location=test.mp3 ! mpegaudioparse ! mad !
audioconvert ! flacenc quality=8 ! filesink location=test.flac"

which runs fine.

2. run
$ gst-launch-1.0 filesrc location=test.mp3 ! mpegaudioparse ! mad !
audioconvert ! flacenc quality=9 ! filesink location=test.flac"

gives an error message instead:

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstFlacEnc:flacenc0: Could not
initialize supporting library.
Additional debug info:
gstflacenc.c(872): gst_flac_enc_set_format ():
/GstPipeline:pipeline0/GstFlacEnc:flacenc0:
could not initialize encoder (wrong parameters?) 11
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...


I'm running gstreamer1-plugins-good-1.10.2-1.fc25.x86_64 on Fedora 25.


[1]
https://www.xiph.org/flac/api/group__flac__stream__encoder.html#gae49cf32f5256cb47eecd33779493ac85

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