[Bug 747546] New: vtenc: "Output state was not configured"

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Wed Apr 8 23:42:14 PDT 2015


            Bug ID: 747546
           Summary: vtenc: "Output state was not configured"
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: ilya.konstantinov at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

gst_vtenc_finish might be called before gst_vtenc_encode_frame ever manages to
encode a single frame, i.e.

  i = 0;
  while (g_async_queue_length (self->cur_outframes) > 0) {
    GstVideoCodecFrame *outframe = g_async_queue_try_pop (self->cur_outframes);

    /* Try to renegotiate once */
    if (i == 0) {
      meta = gst_buffer_get_core_media_meta (outframe->output_buffer);
      if (!gst_vtenc_negotiate_downstream (self, meta->sample_buf)) {

           ^^ this code might never run before gst_vtenc_finish

In such case, VT's queue will be flushed and gst_video_encoder_finish_frame
will be called for every frame, but negotiation will never happen, and

ERROR           videoencoder gstvideoencoder.c:2033:GstFlowReturn
gst_video_encoder_finish_frame(GstVideoEncoder *, GstVideoCodecFrame
*):<vtenc_h264-0> Output state was not configured

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