I retreived the files again yesterday evening, and compiled the entire source code again. Same results, no video output, sic!
The only recent posting I’ve found up to now is that someone is trying to Cross-compile VLC with MMAL Support resulting from the discussions I’ve found in the Raspberry Pi forum to get a working VLC built with omxil and mmal support.
Will dig through some other forum posts to ascertain whether any other issues are known here…