<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body> Hello everyone I'm currently developing an application with a video player component, using <a href="https://docs.gtk.org/gtk4/class.Video.html">the new Gtk4 Gtk.Video class</a>, which I understand is not directly gstreamer-related. However, it does use the Gstreamer plugins ; Now, on the desktop, as a standalone app, it makes use of the distribution packages (base, good, bad, and ugly) and everything works fine. But in the portable (Flatpak) version, I build them to make them available inside the app's sandbox, like this: { "name": "gstreamer", "buildsystem": "meson", "config-opts": [ "--buildtype=release", "--wrap-mode=nodownload", "-Dbase=enabled", "-Dgood=enabled", "-Dbad=enabled", "-Dugly=enabled", "-Dlibav=enabled", "-Dvaapi=enabled", "-Dsharp=disabled", "-Drs=disabled", "-Dpython=disabled", "-Ddevtools=disabled", "-Dges=disabled", "-Drtsp_server=disabled", "-Dgst-examples=disabled", "-Dqt5=disabled", "-Dtests=disabled", "-Dexamples=disabled", "-Dintrospection=enabled", "-Ddoc=disabled", "-Dgtk_doc=disabled", "-Dgpl=enabled", "-Dgstreamer:benchmarks=disabled", "-Dgstreamer:gobject-cast-checks=disabled", "-Dgstreamer:glib-asserts=disabled", "-Dgstreamer:glib-checks=disabled", "-Dgstreamer:extra-checks=disabled", "-Dgst-plugins-base:gobject-cast-checks=disabled", "-Dgst-plugins-base:glib-asserts=disabled", "-Dgst-plugins-base:glib-checks=disabled", "-Dgst-plugins-base:gl_api=opengl,gles2", "-Dgst-plugins-base:gl_platform=egl,glx", "-Dgst-plugins-good:gobject-cast-checks=disabled", "-Dgst-plugins-good:glib-asserts=disabled", "-Dgst-plugins-good:glib-checks=disabled", "-Dgst-plugins-good:gtk3=disabled", "-Dgst-plugins-bad:gobject-cast-checks=disabled", "-Dgst-plugins-bad:glib-asserts=disabled", "-Dgst-plugins-bad:glib-checks=disabled", "-Dgst-plugins-bad:extra-checks=disabled", "-Dgst-plugins-bad:vulkan=disabled", "-Dgst-plugins-bad:webrtc=disabled", "-Dgst-plugins-bad:wasapi=disabled", "-Dgst-plugins-bad:wasapi2=disabled", "-Dgst-plugins-bad:winks=disabled", "-Dgst-plugins-bad:winscreencap=disabled", "-Dgst-plugins-bad:assrender=enabled", "-Dgst-plugins-bad:nvcodec=enabled", "-Dgst-plugins-bad:v4l2codecs=enabled", "-Dgst-plugins-bad:va=enabled", "-Dgst-plugins-ugly:gobject-cast-checks=disabled", "-Dgst-plugins-ugly:glib-asserts=disabled", "-Dgst-plugins-ugly:glib-checks=disabled", "-Dgst-plugins-ugly:mpeg2dec=enabled" ], "sources": [ { "type": "git", "url": <a class="moz-txt-link-rfc2396E" href="https://gitlab.freedesktop.org/gstreamer/gstreamer.git">"https://gitlab.freedesktop.org/gstreamer/gstreamer.git"</a>, "tag": "1.21.2", "commit": "a1fcf2b90a293ed6d345411a73420fd77faed4f2", "disable-submodules": true } ] } But as soon as I enable the vaapi option - which I need to decode H.265 - all the videos become red, like they lose the G and B. This has been blocking me for several days now, as I tried a lot of options combinations, and the above list of options is the best I could come up with: <ul> <li>Every codec but H.265 plays fine ; or </li> <li>Every codec plays fine but only the red channel </li> </ul> Does anybody know why this happens? Is it a bad interaction between two incompatible options? Thank you for your attention, Phil </body> </html>