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Instead, by changing libvlc_video_engine_opengl into libvlc_video_engine_disable (maybe it tells the renderer to choose the video output) By using disable, none of the callbacks set with libvlc_video_set_output_callbacks will be called. It effectively disables using that feature. And VLC creates a ...

Update: when setting libvlc_video_engine_disable - the only video output engine the program goes on with - the OpenGL window opened after libvlc_media_player_play seems not be the main one (in the example called "test"), and, maybe, it gets opened by the player thread aside the main one, w...

I've managed to compile sdl_opengl_player.cpp for Windows using Visual Studio 19 and vlc 4.0. For using the runtime infrastructure of vlc I moved and run the resulting executable into the vlc-4.0.0-dev nightly snapshot (until the one of May 10). With the original code's libvlc_video_engine_opengl se...