[Bug 727702] gstreamer: non writable output buffer in do_transform_frame

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727702
  GStreamer | gstreamer (core) | 1.x

--- Comment #2 from tcapix <ticapix at gmail.com> 2014-04-06 10:30:53 UTC ---
the error on stdout is

(python:11281): GStreamer-CRITICAL **: gst_buffer_fill: assertion
'gst_buffer_is_writable (buffer)' failed
Traceback (most recent call last):
  File "/home/ticapix/workspace/vhs_restore/src/bug01.py", line 40, in
do_transform_frame
    assert ret == 1
AssertionError

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