[Bug 786173] New: vaapi h264 decoder corrupted frame when there is resolution change

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Fri Aug 11 19:00:17 UTC 2017


https://bugzilla.gnome.org/show_bug.cgi?id=786173

            Bug ID: 786173
           Summary: vaapi h264 decoder corrupted frame when there is
                    resolution change
    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: matteo.valdina at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: bsreerenj at gmail.com, vjaquez at igalia.com
     GNOME version: ---

Created attachment 357440
  --> https://bugzilla.gnome.org/attachment.cgi?id=357440&action=edit
Test application

I'm writing a test application that encode and decode an H.264 stream.

The two pipeline (encoder pipeline and decoder pipeline) are connected via an
udpsink and udpsrc on the loopback.

The problem is when the encoder changes resolution, the output on the decoder
is corrupted. I tested with VLC and it is able to show correctly the stream.

>From logs on the decoder side, I can see that the h264parse send the new caps
to vaapidecodebin but the vaapidecode negotiate something like sink pad new
resolution src pad old resolution.

In attachment my test source code.

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