MB_FLIGHT_SCREEN      ?= off
MB_DOC_HELP_VARIABLE  += $(call mb_doc_variable,MB_FLIGHT_SCREEN,"Creates screenshots on exit of openMSX.",$(MB_FLIGHT_SCREEN))

MB_FLIGHT_VIDEO       ?= off
MB_DOC_HELP_VARIABLE  += $(call mb_doc_variable,MB_FLIGHT_VIDEO,"Create video of every build pipe session.",$(MB_FLIGHT_VIDEO))

MB_FLIGHT_PREFIX      ?= msxbuild
MB_DOC_HELP_VARIABLE  += $(call mb_doc_variable,MB_FLIGHT_PREFIX,"Prefix for video and screenshot flight files.",$(MB_FLIGHT_PREFIX))

MB_FLIGHT_SEPERATOR   ?= -
MB_DOC_HELP_VARIABLE  += $(call mb_doc_variable,MB_FLIGHT_SEPERATOR,"File and index number seperator for flight files.",$(MB_FLIGHT_SEPERATOR))

MB_FLIGHT_RECORD_FLAG ?= -doublesize
MB_DOC_HELP_VARIABLE  += $(call mb_doc_variable,MB_FLIGHT_RECORD_FLAG,"Command parameter flag of the video recorder.",$(MB_FLIGHT_RECORD_FLAG))

MB_FLIGHT_VIDEO_NAME  ?= flight-video
MB_DOC_HELP_VARIABLE  += $(call mb_doc_variable,MB_FLIGHT_VIDEO_NAME,"Video file name of the final result merged video.",$(MB_FLIGHT_VIDEO_NAME))

define mb_flight_video_merge
	@echo === Indexing flight videos
	ls -1tr $(1)/*-omsx/videos/*.avi | awk -F "$(1)/" -v s="file '" -v e="'" '{print s$$2e}' > $(1)/$(MB_FLIGHT_VIDEO_NAME).lst
	ffmpeg -v quiet -y -f concat -i $(1)/$(MB_FLIGHT_VIDEO_NAME).lst -c copy $(1)/$(MB_FLIGHT_VIDEO_NAME).avi
	@echo === Flight video completed
endef
MB_DOC_HELP_FUNCTION += $(call mb_doc_function,mb_flight_video_merge,"Merged all flight videos to one.","<dir>")