[Bug 772457] New: Delayed linking failed with decodebin on mp4/H264 file

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=772457

            Bug ID: 772457
           Summary: Delayed linking failed with decodebin on mp4/H264 file
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer-vaapi
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: florent.thiery at ubicast.eu
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: bsreerenj at gmail.com, vjaquez at igalia.com
     GNOME version: ---

The following pipeline crashes (Internal data stream error):

gst-launch-1.0 filesrc location=bbb-1920-1080-30.mp4 num-buffers=180 !
decodebin ! videoscale ! video/x-raw\,\ format\=\(string\)I420\,\
width\=\(int\)1920\,\ height\=\(int\)1080\,\ framerate\=\(fraction\)30/1 !
filesink location=samples/tmp.raw
WARNING: from element /GstPipeline:pipeline0/GstDecodeBin:decodebin0: Delayed
linking failed.
ERROR: from element
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0: Internal
data stream error.

Sample:
http://distribution.bbb3d.renderfarming.net/video/mp4/bbb_sunflower_1080p_30fps_normal.mp4

This didn't fail on 1.8.3, and i checked that it does not happen when vaapi is
not present.

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