[gstreamer-bugs] [Bug 576322] New: cannot change caps inline to set samplerate

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: 0.10.22
           Summary: cannot change caps inline to set samplerate
           Product: GStreamer
           Version: 0.10.22
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: reacocard at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


I'm using capsfilter and audioresample to force the sample rate in my pipeline.
However, when I try to change the sample rate while the pipeline is running, by
setting a new caps on the capsfilter, it does not change, and outputs a lot of
the following message instead:

** (sample.py:31086): CRITICAL **: gst_base_transform_find_transform: assertion
`gst_caps_is_fixed (caps)' failed


Some sample code (in pygst) that replicates the problem may be found here:
http://pastebin.ca/1368322


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