“It’s completely unfair that airports can profit from the unlimited sale of alcohol to passengers and leave the airlines to deal with the safety consequences,” Kenny Jacobs, Ryanair’s marketing director, said in a statement. “This is a particular problem during flight delays when airports apply no limit to the sale of alcohol in airside bars and restaurants. This is an issue which the airports must now address and we are calling for significant changes to prohibit the sale of alcohol at airports, particularly with early morning flights and when flights are delayed.”
The modes starting with display- try to output video frames completely synchronously to the display, using the detected display vertical refresh rate as a hint how fast frames will be displayed on average. These modes change video speed slightly to match the display. See --video-sync-... options for fine tuning. The robustness of this mode is further reduced by making a some idealized assumptions, which may not always apply in reality. Behavior can depend on the VO and the system's video and audio drivers. Media files must use constant framerate. Section-wise VFR might work as well with some container formats (but not . mkv). If the sync code detects severe A/V desync, or the framerate cannot be detected, the player automatically reverts to audio mode for some time or permanently. These modes also require a vsync blocked presentation mode. For OpenGL, this translates to --opengl-swapinterval=1 . For Vulkan, it translates to --vulkan-swap-mode=fifo (or fifo-relaxed ).