[Bug 794401] New: possible bug in gstglvideomixer

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Fri Mar 16 13:44:37 UTC 2018


https://bugzilla.gnome.org/show_bug.cgi?id=794401

            Bug ID: 794401
           Summary: possible bug in gstglvideomixer
    Classification: Platform
           Product: GStreamer
           Version: 1.13.91
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: d.klamt at pengutronix.de
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 369785
  --> https://bugzilla.gnome.org/attachment.cgi?id=369785&action=edit
Script that produces the "bug"

i have encountered a strange output when linking gstgltransformation with
gstglvideomixer using the following pipeline.

gst-launch-1.0 -v glvideomixerelement name=m sink_1::xpos=300 sink_2::ypos=400
sink_3::xpos=300 sink_3::ypos=400 ! glimagesink \
gltestsrc ! glupload ! gltransformation rotation-y=45 ! m. \
gltestsrc ! glupload ! gltransformation rotation-y=45 ! m. \
gltestsrc ! glupload ! gltransformation rotation-y=45 ! gldownload ! videocrop
! glupload ! m. \
gltestsrc ! glupload ! gltransformation rotation-y=45 ! gldownload ! videocrop
! glupload ! m.

Connecting gltransformation directly to the videomixer element results in a
different rotation than when i download an upload it in between.
Do you have any idea what may be the source of this difference and where i can
look into fixing it

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