[Bug 777475] New: compositor : Issue in computing position when pixel-aspect-ratio is not 1/1
GStreamer (GNOME Bugzilla)
bugzilla at gnome.org
Thu Jan 19 06:36:10 UTC 2017
https://bugzilla.gnome.org/show_bug.cgi?id=777475
Bug ID: 777475
Summary: compositor : Issue in computing position when
pixel-aspect-ratio is not 1/1
Classification: Platform
Product: GStreamer
Version: 1.10.0
OS: Windows
Status: NEW
Severity: normal
Priority: Normal
Component: gst-plugins-bad
Assignee: gstreamer-bugs at lists.freedesktop.org
Reporter: jagadishkamathk at gmail.com
QA Contact: gstreamer-bugs at lists.freedesktop.org
GNOME version: ---
Compositor element seems to stretch/compress the video based on
pixel-aspect-ratio, and then use xpos and ypos on the stretched/compressed
video size. This looks wrong to me and like a bug. Can someone confirm pls?
For example, if video is 100x100 par of 2/1, and I want to position another
100x100 adjacent to it, second 100x100 and xpos=100 and ypos=0, this second
video gets positioned from the center of first video and resultant video is
300x100
Pipeline:
gst-launch-1.0 videotestsrc pattern=0 !
video/x-raw,width=100,height=100,pixel-aspect-ratio=2/1 ! comp. videotestsrc
pattern=18 ! video/x-raw,width=100,height=100,pixel-aspect-ratio=2/1 ! comp.
compositor name=comp sink_0::xpos=0 sink_0::ypos=0 sink_1::xpos=100
sink_1::ypos=0 ! videoconvert ! autovideosink -v
No composition also stretches the video
gst-launch-1.0 videotestsrc pattern=0 !
video/x-raw,width=100,height=100,pixel-aspect-ratio=2/1 ! compositor name=comp
sink_0::xpos=0 sink_0::ypos=0 ! videoconvert ! autovideosink -v
Setting pixel aspect ratio downstream to 1/1 doesnt seem to help either
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