[Bug 742883] New: videodecoder: Spurious renegotiation

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=742883
  GStreamer | gst-plugins-base | git

           Summary: videodecoder: Spurious renegotiation
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: nicolas.dufresne at collabora.co.uk
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


We made changed recently in the video decoder behaviour and I think they might
be related to spurious renegotiation happening in various decoder. Right not it
happens twice in v4l2videodec, and every frame with avdec_h264. To reproduce:

gdb --args gst-launch-1.0 filesrc location=some.mp4 ! qtdemux ! avdec_h264 !
fakesink
$ break gst_ffmpegviddec_negotiate

Normally in such a simple pipeline, negotiate should be called only once.

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