linking error when input stream connected to glvideomixer will change

when:

when adding passthrou element(identity) to pipeline between queue and proxysink.

only happening when TestSrc resolution do not match capsfilter resolution insterted after videoscale in mixer_pipe.

what:

linking error while linking passthrou element(identity) with queue and proxysink on callback.

what happening:

0:00:06.075719729 74767 0x7f7dc0002360 INFO                GST_PADS gstpad.c:2434:gst_pad_link_prepare: caps are incompatible
0:00:06.075800353 74767 0x7f7dc0002360 INFO                GST_PADS gstpad.c:2527:gst_pad_link_full: link between identity0:src and proxysink0:sink failed: no common format

when using compositor not glvideomixer same code works

expected:

there should be possible to add passthru element like indetity despite resolution difference. videoscale present.

glvideomixer should behave like compositor.

additional info: The following code will fail when resolution on the capsfilter (mixer_pipe) is different then resolution on the videotestsrc (video_pipe). Comments in the source code included.

In case with the glvideomixer there is a unlinked proxysink element visible on the dot file.

Everything works fine with the compositor but fails with glvideomixer.

Build command: libtool --mode=link gcc pkg-config --cflags --libs gstreamer-1.0 -o myprog main.cpp

main.cpp

GST_DEBUG_4_log.out

dot.tar.xz

changed title from dynamic change of input stream connected to glvideomixer to linking error when input stream connected to glvideomixer will change

changed the description

small comment: the videoscale in front of the mixer is for a reduction of CPU->GPU copy (glupload).

changed the description

added Base Plugins labels

added Stale label

Hello, this issue has been inactive open for more than 60 days. Should it be moved to the monorepo or closed ?