Bug 1276442

Downgrading gstreamer-python to F22 version allows application like SoundConverter running. Testing example below:

$ sudo dnf downgrade gstreamer-python --releasever=22
Dependencies resolved.
================================================================================
 Package                Arch         Version                 Repository    Size
================================================================================
Downgrading:
 gstreamer-python       x86_64       0.10.22-7.fc22          fedora       321 k

Transaction Summary
================================================================================
Downgrade  1 Package

Total download size: 321 k
Is this ok [y/N]: y
Downloading Packages:
gstreamer-python-0.10.22-7.fc22.x86_64.rpm       22 kB/s | 321 kB     00:14    
--------------------------------------------------------------------------------
Total                                            19 kB/s | 321 kB     00:17     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Downgrading : gstreamer-python-0.10.22-7.fc22.x86_64                      1/2 
  Erasing     : gstreamer-python-0.10.22-8.fc23.x86_64                      2/2 
  Verifying   : gstreamer-python-0.10.22-7.fc22.x86_64                      1/2 
  Verifying   : gstreamer-python-0.10.22-8.fc23.x86_64                      2/2 

Downgraded:
  gstreamer-python.x86_64 0.10.22-7.fc22                                        

Complete!

$ soundconverter 
SoundConverter 2.1.6
** Message: pygobject_register_sinkfunc is deprecated (GstObject)
  using Gstreamer version: 0.10.36
  using 4 thread(s)
  using gio
  "xingmux" gstreamer element not found, disabling Xing Header output.
  "lame" gstreamer element not found, disabling MP3 output.
  "faac" gstreamer element not found, disabling AAC output.


Running python and import gst:
$ python
Python 2.7.10 (default, Sep  8 2015, 17:20:17) 
[GCC 5.1.1 20150618 (Red Hat 5.1.1-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import gst
** Message: pygobject_register_sinkfunc is deprecated (GstObject)

Those above test demonstrate the current gstreamer-python is broken on F23.

pbrobinson added a python-libxml2 dependency, but I still see these errors, on Rawhide:

>>> import gst

(gst-plugin-scanner:6850): GStreamer-WARNING **: Failed to load plugin '/usr/lib64/gstreamer-0.10/libgstpython.so': /usr/lib64/gstreamer-0.10/libgstpython.so: undefined symbol: PyList_Insert
libGL error: failed to open drm device: Permission denied
libGL error: failed to load driver: nouveau
** Message: pygobject_register_sinkfunc is deprecated (GstObject)

the first in particular looks bad, I'll try and figure it out.

hum, only seems to happen on the *first* try? not sure. weird.

(In reply to awilliam from comment #3)
> hum, only seems to happen on the *first* try? not sure. weird.

Probably a remain of the old version waiting to flushed on the next try. =)
Joking aside, I am closing this report now therecent version (0.10.22-9.fc23) including python-libxml2 dependency resolves the issue.

Reproducible with F25.

Also see bug 1367498. I don't know yet what else may be broken in soundconverter for a few releases of Fedora, but this is one problem.

Oh, and a simple rebuild alone doesn't fix anything.

soundconverter has a port to gstreamer 1.0 and python3 on upstream development branches, no releases yet though.

As the previous package maintainer of soundconverter I'm aware of that. See my comments on @devel list where I've mentioned the old 3.0.0-alpha1 release ( https://launchpad.net/soundconverter/3.x ), whereas git is down to 2.9.0 something. I've also been active in upstream launchpad, and 3.0.0-alpha1 didn't work at all for me. Just making a package build is _not_ enough, and in the case of Soundconverter, much more work has been necessary for a long time. Spec %changelog tells parts of the story.

I got a build of the current stuff which at least worked for my purposes (FLAC to Vorbis), but it didn't actually fix the unrelated bug I was trying to get fixed, so I didn't pursue it any further. not sure if I still have it.

Strange to read something like that from you. Which "unrelated bug" is that? And did it affect Soundconverter as packaged by Fedora, too?

well, yes, because that's what I was using. the bug was to do with soundconverter choking on files and/or metadata containing certain characters (like ').

It could be that the "undefined symbol: PyList_Insert" is normal and only appears once during plugin registry update, because:

$ rpm -q gstreamer-python ; rm -rf ~/.gstreamer-0.10/ ; gst-inspect-0.10 |head -1
gstreamer-python-0.10.22-11.fc25.x86_64

(gst-plugin-scanner:2175): GStreamer-WARNING **: Failed to load plugin '/usr/lib64/gstreamer-0.10/libgstpython.so': /usr/lib64/gstreamer-0.10/libgstpython.so: undefined symbol: PyList_Insert
xvimagesink:  xvimagesink: Video sink

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