[Bug 771008] New: nvh264enc Could not initialize supporting library once 3.rd the same stream opened

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=771008

            Bug ID: 771008
           Summary: nvh264enc Could not initialize supporting library once
                    3.rd the same stream opened
    Classification: Platform
           Product: GStreamer
           Version: 1.8.3
                OS: Linux
            Status: NEW
          Severity: critical
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: lienes.cirules at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Used stream : gst-launch-1.0 videotestsrc ! videoconvert ! video/x-raw !
nvh264enc  ! h264parse ! video/x-h264,stream-format=byte-stream ! avdec_h264 !
videoconvert ! autovideosink. It works correct for 2 streams. Once I open
another one the same stream, it dumps error messages:  
Setting pipeline to PAUSED ...
libva info: VA-API version 0.39.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva info: Found init function __vaDriverInit_0_39
libva info: va_openDriver() returns 0
ERROR: Pipeline doesn't want to pause.
Got context from element 'autovideosink0': gst.vaapi.Display=context,
gst.vaapi.Display=(GstVaapiDisplay)NULL;
ERROR: from element /GstPipeline:pipeline0/GstNvH264Enc:nvh264enc0: Could not
initialize supporting library.
Additional debug info:
gstvideoencoder.c(1534): gst_video_encoder_change_state ():
/GstPipeline:pipeline0/GstNvH264Enc:nvh264enc0:
Failed to open encoder
Setting pipeline to NULL ...
Freeing pipeline ...

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