qmlglsink: stride/pitch issues in dual VGA case
Similar issues exist on at least two other systems (Intel + nVidia GTX 1060 IIRC).
Disabling Intel VGA or removing NVidia card makes video rendering to work properly.
glimagesink works correctly.
qmlglsink - current master. I'm going to check with 1.14.5.
Could anyone please give idea what to check?